Company lists · Data refreshed October 2026
Top 25 Renewable energy optimization consultants based in Austria
RevenueBase identified 102 company matches for renewable energy optimization consultants associated with Austria as of October 2026 and tracks 516 professional contacts across them, including 215 with verified work emails. Vienna is the largest hub.
This list covers company matches for renewable energy optimization consultants associated with Austria, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 22, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest renewable energy optimization consultants based in Austria
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 48 contacts → | ||||
Exact match “We’re building Austria’s fastest-growing clean energy company, combining technology, process excellence, and hands-on execution to make renewable heating and solar power radically…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 2 | 46 contacts → | ||||
Exact match “CES clean energy solutions is an enginneering consultant company and serves you as competence centre for energy efficiency, renewable energy and sustainable development.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 3 | 25 contacts → | ||||
Exact match “As a leading specialist in solar energy since 1993, based in St.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 4 | 23 contacts → | ||||
Exact match “e7 is a private research and consulting company specialized in the energy efficiency and the renewable energy sector.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 5 | 21 contacts → | ||||
Exact match “ENEXSA (formerly VTU Energy) is a team of highly qualified engineers with long-term experience in the power industry who offer consulting services and software solutions for the…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 6 | 15 contacts → | ||||
Exact match “Mit unserer langjährigen Erfahrung im Energieeinkauf und unserem hohen technischen Know-How begleiten wir unsere Kunden partnerschaftlich und auf Augenhöhe in die Energiezukunft.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 7 | 14 contacts → | ||||
Exact match “Projektentwicklung, Beratung, Planung, Umsetzung von PV-Projekten für Gewerbe und Industrie” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 8 | 11 contacts → | ||||
Exact match “Voltares is an independent renewable energy developer focused on utility-scale and distributed assets in emerging markets.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 9 | 11 contacts → | ||||
Exact match “We are a growing technical office for renewable energy located in Friedburg /Upper Austria.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 10 | 11 contacts → | ||||
Exact match “Conversio Energie GmbH is a chemicals company based out of Koschatstraße 24, Spittal an der Drau, Austria.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 11 | 11 contacts → | ||||
Exact match “Vor dem Hintergrund aktueller klimatischer Prozesse, neuer gesetzlicher Rahmenbedingungen und hoher Kosten wird Dekarbonisierung zu einem der wichtigsten Themen in der…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 12 | 10 contacts → | ||||
Exact match “We are an Austrian consulting company focusing on planning and implementing future-oriented sustainable energy solutions for responsible people and companies.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 13 | 8 contacts → | ||||
Exact match “Ökosolar ist ein führender Anbieter im Bereich Photovoltaik mit einer klaren Mission: die breite Nutzung von erneuerbarer Sonnenenergie mithilfe von qualitativ hochwertigen…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 14 | 7 contacts → | ||||
Exact match “Nikko Engineering ist ein Ingenieurbüro für Elektrotechnik und ausschließlich im Bereich Photovoltaik tätig.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 15 | 7 contacts → | ||||
Exact match “Wir sind seit 1992 im Dienst der Sonne tätig.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 16 | 7 contacts → | ||||
Exact match “i2m Unternehmensentwicklung GmbH is a research-driven technology development and innovation consultancy founded in Graz, Austria in 2014.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 17 | 7 contacts → | ||||
Exact match “With our energy management know-how, we provide comprehensive advice to municipalities through to companies and private individuals on the basis of energy management analyses…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 18 | 7 contacts → | ||||
Exact match “Green Electrics unterstützt Sie als Komplettanbieter zuverlässig mit innovativen Lösungen in allen energiewirtschaftlichen Belangen zum Thema Licht, Photovoltaik, Smart Home und…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 19 | 7 contacts → | ||||
Exact match “Wir haben es uns seit 2011 zur Aufgabe gemacht, das Potential der Sonne als Energiequelle zu nutzen.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 20 | 6 contacts → | ||||
Exact match “We address the most urgent challenges of data centre operators, industrial companies, municipalities and the energy sector when it comes to transforming their infrastructure at…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 21 | 6 contacts → | ||||
Exact match “Energy+- your partner for renewable energies.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 22 | 5 contacts → | ||||
Exact match “sparkspire is a Vienna-based, independent management and technology consultancy focused exclusively on the energy industry.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 23 | 5 contacts → | ||||
Exact match “Unsere Firmenphilosophie als Energieberatungsunternehmen basiert auf dem Ziel, unseren Kunden dabei zu helfen, ihre Energieeffizienz zu verbessern und ihre Energiekosten zu…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 24 | 5 contacts → | ||||
Exact match “A Short History Originally established in 2011 as a joint venture between denkstatt GmbH and ENERTEC - Naftz & Partner GmbH & Co KG, the company known as denkstatt & enertec (d&e…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 25 | 4 contacts → | ||||
Exact match “Erneuerbare Energien” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “renewable energy optimization consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 102 renewable energy optimization consultants based in Austria
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Renewable energy optimization consultants based in Austria at a glance
As of Oct 22, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Austria, so it is reported there. Company counts and contact totals on this page are exact for Austria, over 102 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with Austria whose business descriptions match “renewable energy optimization consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 215 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on October 22, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “renewable energy optimization consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many renewable energy optimization consultants are there based in Austria?
RevenueBase identified 102 company matches for renewable energy optimization consultants associated with Austria as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Heizma tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most renewable energy optimization consultants?
Vienna leads with 18 company records, followed by Graz (5) and Linz (5).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 215 professional contacts with verified work emails tracked across these 102 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 22, 2026.
Ready to reach these companies? Verified emails and direct dials for all 102 renewable energy optimization consultants based in Austria. Start with a free account, no credit card.
Download this list →Related lists
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- Renewable energy optimization consultants based in Porto Alegre, Brazil
- Renewable energy optimization consultants based in Rio De Janeiro, Brazil
- Renewable energy optimization consultants based in Sao Paulo, Brazil
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Renewable energy optimization consultants based in Buenos Aires, Argentina
- Renewable energy optimization consultants based in Brisbane, Australia
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Company intelligence · public preview
Top 25 renewable energy optimization consultants based in Austria
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 102 matching company records for renewable energy optimization consultants based in Austria, with 516 tracked contacts and 215 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 22, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 renewable energy optimization consultants based in Austria
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Heizmaheizma.atHQ: Vienna, AustriaReported employees: 51-200 | Vienna, Austria | 51-200 | Exact match | 48 contacts → |
“We’re building Austria’s fastest-growing clean energy company, combining technology, process excellence, and hands-on execution to make renewable heating and solar power radically…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  CES Clean Energy Solutionsic-ces.atHQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 46 contacts → |
“CES clean energy solutions is an enginneering consultant company and serves you as competence centre for energy efficiency, renewable energy and sustainable development.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Sonnenkraft Gmbhsonnenkraft.comHQ: Sankt Veit An Der Glan, AustriaReported employees: 201-500 | Sankt Veit An Der Glan, Austria | 201-500 | Exact match | 25 contacts → |
“As a leading specialist in solar energy since 1993, based in St.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  E7 Energy Innovation & Engineeringe-sieben.atHQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 23 contacts → |
“e7 is a private research and consulting company specialized in the energy efficiency and the renewable energy sector.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Enexsa Gmbhenexsa.comHQ: Raaba-grambach, AustriaReported employees: 11-50 | Raaba-grambach, Austria | 11-50 | Exact match | 21 contacts → |
“ENEXSA (formerly VTU Energy) is a team of highly qualified engineers with long-term experience in the power industry who offer consulting services and software solutions for the…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Power Solutionpower-solution.euHQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 15 contacts → |
“Mit unserer langjährigen Erfahrung im Energieeinkauf und unserem hohen technischen Know-How begleiten wir unsere Kunden partnerschaftlich und auf Augenhöhe in die Energiezukunft.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  10hoch4 Energiesysteme10hoch4.atHQ: Theresienfeld, AustriaReported employees: 51-200 | Theresienfeld, Austria | 51-200 | Exact match | 14 contacts → |
“Projektentwicklung, Beratung, Planung, Umsetzung von PV-Projekten für Gewerbe und Industrie” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Voltaresvoltares.comHQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 11 contacts → |
“Voltares is an independent renewable energy developer focused on utility-scale and distributed assets in emerging markets.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Energiewerkstattenergiewerkstatt.orgHQ: Lengau, AustriaReported employees: 11-50 | Lengau, Austria | 11-50 | Exact match | 11 contacts → |
“We are a growing technical office for renewable energy located in Friedburg /Upper Austria.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Conversio Energie Gmbhconversioenergie.atHQ: Spittal An Der Drau, AustriaReported employees: 201-500 | Spittal An Der Drau, Austria | 201-500 | Exact match | 11 contacts → |
“Conversio Energie GmbH is a chemicals company based out of Koschatstraße 24, Spittal an der Drau, Austria.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  One2zeroone2zero.comHQ: Salzburg, AustriaReported employees: 11-50 | Salzburg, Austria | 11-50 | Exact match | 11 contacts → |
“Vor dem Hintergrund aktueller klimatischer Prozesse, neuer gesetzlicher Rahmenbedingungen und hoher Kosten wird Dekarbonisierung zu einem der wichtigsten Themen in der…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Engineering Office Mitplanmitplan.atHQ: Pinsdorf, AustriaReported employees: 1-10 | Pinsdorf, Austria | 1-10 | Exact match | 10 contacts → |
“We are an Austrian consulting company focusing on planning and implementing future-oriented sustainable energy solutions for responsible people and companies.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Ökosolar PVoekosolar.comHQ: Weißkirchen, AustriaReported employees: 11-50 | Weißkirchen, Austria | 11-50 | Exact match | 8 contacts → |
“Ökosolar ist ein führender Anbieter im Bereich Photovoltaik mit einer klaren Mission: die breite Nutzung von erneuerbarer Sonnenenergie mithilfe von qualitativ hochwertigen…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Nikko Engineering Gmbhnikko-engineering.atHQ: Baden, AustriaReported employees: 1-10 | Baden, Austria | 1-10 | Exact match | 7 contacts → |
“Nikko Engineering ist ein Ingenieurbüro für Elektrotechnik und ausschließlich im Bereich Photovoltaik tätig.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Doma VKWdomavkw.atHQ: Satteins, AustriaReported employees: 11-50 | Satteins, Austria | 11-50 | Exact match | 7 contacts → |
“Wir sind seit 1992 im Dienst der Sonne tätig.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  I2m Gmbhi2m.atHQ: Graz, AustriaReported employees: 1-10 | Graz, Austria | 1-10 | Exact match | 7 contacts → |
“i2m Unternehmensentwicklung GmbH is a research-driven technology development and innovation consultancy founded in Graz, Austria in 2014.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: Heiligenkreuz, AustriaReported employees: 11-50 | Heiligenkreuz, Austria | 11-50 | Exact match | 7 contacts → |
“With our energy management know-how, we provide comprehensive advice to municipalities through to companies and private individuals on the basis of energy management analyses…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Green Electrics Licht & Energietechnik Gmbhgreen-electrics.atHQ: Gleisdorf, AustriaReported employees: 51-200 | Gleisdorf, Austria | 51-200 | Exact match | 7 contacts → |
“Green Electrics unterstützt Sie als Komplettanbieter zuverlässig mit innovativen Lösungen in allen energiewirtschaftlichen Belangen zum Thema Licht, Photovoltaik, Smart Home und…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Solah Gmbhsolah-group.comHQ: Mattersburg, AustriaReported employees: 11-50 | Mattersburg, Austria | 11-50 | Exact match | 7 contacts → |
“Wir haben es uns seit 2011 zur Aufgabe gemacht, das Potential der Sonne als Energiequelle zu nutzen.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Decision Advisory Group Gmbhdecision-advisory.comHQ: Vienna, AustriaReported employees: 1-10 | Vienna, Austria | 1-10 | Exact match | 6 contacts → |
“We address the most urgent challenges of data centre operators, industrial companies, municipalities and the energy sector when it comes to transforming their infrastructure at…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Energy Solutions Gmbhenergyplus.atHQ: Engerwitzdorf, AustriaReported employees: 1-10 | Engerwitzdorf, Austria | 1-10 | Exact match | 6 contacts → |
“Energy+- your partner for renewable energies.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Sparkspire Gmbhsparkspire.comHQ: Vienna, AustriaReported employees: 1-10 | Vienna, Austria | 1-10 | Exact match | 5 contacts → |
“sparkspire is a Vienna-based, independent management and technology consultancy focused exclusively on the energy industry.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  PTM Energyptm.energyHQ: Kirchbichl, AustriaReported employees: 1-10 | Kirchbichl, Austria | 1-10 | Exact match | 5 contacts → |
“Unsere Firmenphilosophie als Energieberatungsunternehmen basiert auf dem Ziel, unseren Kunden dabei zu helfen, ihre Energieeffizienz zu verbessern und ihre Energiekosten zu…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  D&e Consultingdue-consulting.atHQ: Vienna, AustriaReported employees: 1-10 | Vienna, Austria | 1-10 | Exact match | 5 contacts → |
“A Short History Originally established in 2011 as a joint venture between denkstatt GmbH and ENERTEC - Naftz & Partner GmbH & Co KG, the company known as denkstatt & enertec (d&e…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Connesso Energy Gmbhconnesso.atHQ: Vienna, AustriaReported employees: 1-10 | Vienna, Austria | 1-10 | Exact match | 4 contacts → |
“Erneuerbare Energien” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 102 company matches
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Renewable energy optimization consultants: dataset insights
October 22, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
102 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for Austria, so it is reported there. Company counts and contact totals on this page are exact for Austria, over 102 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 22, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for renewable energy optimization consultants?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many renewable energy optimization consultants did RevenueBase find based in Austria?
The saved snapshot records 102 matching company records, 516 tracked contacts and 215 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 22, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Renewable energy optimization consultants by geography
- Renewable energy optimization consultants based in Buenos Aires, Argentina
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- Renewable energy optimization consultants based in Sydney, Australia
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Cite this list
RevenueBase Data Team. Top 25 renewable energy optimization consultants based in Austria. Snapshot: October 22, 2026. https://revenuebase.ai/companies/renewable-energy-optimization-consultants/austria.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Renewable energy optimization consultants based in Buenos Aires, Argentina
- Renewable energy optimization consultants based in Brisbane, Australia
- Renewable energy optimization consultants based in Melbourne, Australia
- Renewable energy optimization consultants based in Perth, Australia
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Company intelligence · public preview
Top 25 renewable energy optimization consultants based in Austria
RevenueBase records 102 matching company records for renewable energy optimization consultants based in Austria, with 516 tracked contacts and 215 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 22, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 renewable energy optimization consultants based in Austria
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Heizmaheizma.at HQ: Vienna, AustriaReported employees: 51-200 | Vienna, Austria | 51-200 | Exact match | 48 contacts → |
“We’re building Austria’s fastest-growing clean energy company, combining technology, process excellence, and hands-on execution to make renewable heating and solar power radically…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | CES Clean Energy Solutionsic-ces.at HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 46 contacts → |
“CES clean energy solutions is an enginneering consultant company and serves you as competence centre for energy efficiency, renewable energy and sustainable development.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Sonnenkraft Gmbhsonnenkraft.com HQ: Sankt Veit An Der Glan, AustriaReported employees: 201-500 | Sankt Veit An Der Glan, Austria | 201-500 | Exact match | 25 contacts → |
“As a leading specialist in solar energy since 1993, based in St.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | E7 Energy Innovation & Engineeringe-sieben.at HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 23 contacts → |
“e7 is a private research and consulting company specialized in the energy efficiency and the renewable energy sector.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Enexsa Gmbhenexsa.com HQ: Raaba-grambach, AustriaReported employees: 11-50 | Raaba-grambach, Austria | 11-50 | Exact match | 21 contacts → |
“ENEXSA (formerly VTU Energy) is a team of highly qualified engineers with long-term experience in the power industry who offer consulting services and software solutions for the…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Power Solutionpower-solution.eu HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 15 contacts → |
“Mit unserer langjährigen Erfahrung im Energieeinkauf und unserem hohen technischen Know-How begleiten wir unsere Kunden partnerschaftlich und auf Augenhöhe in die Energiezukunft.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | 10hoch4 Energiesysteme10hoch4.at HQ: Theresienfeld, AustriaReported employees: 51-200 | Theresienfeld, Austria | 51-200 | Exact match | 14 contacts → |
“Projektentwicklung, Beratung, Planung, Umsetzung von PV-Projekten für Gewerbe und Industrie” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Voltaresvoltares.com HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 11 contacts → |
“Voltares is an independent renewable energy developer focused on utility-scale and distributed assets in emerging markets.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Energiewerkstattenergiewerkstatt.org HQ: Lengau, AustriaReported employees: 11-50 | Lengau, Austria | 11-50 | Exact match | 11 contacts → |
“We are a growing technical office for renewable energy located in Friedburg /Upper Austria.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Conversio Energie Gmbhconversioenergie.at HQ: Spittal An Der Drau, AustriaReported employees: 201-500 | Spittal An Der Drau, Austria | 201-500 | Exact match | 11 contacts → |
“Conversio Energie GmbH is a chemicals company based out of Koschatstraße 24, Spittal an der Drau, Austria.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | One2zeroone2zero.com HQ: Salzburg, AustriaReported employees: 11-50 | Salzburg, Austria | 11-50 | Exact match | 11 contacts → |
“Vor dem Hintergrund aktueller klimatischer Prozesse, neuer gesetzlicher Rahmenbedingungen und hoher Kosten wird Dekarbonisierung zu einem der wichtigsten Themen in der…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Engineering Office Mitplanmitplan.at HQ: Pinsdorf, AustriaReported employees: 1-10 | Pinsdorf, Austria | 1-10 | Exact match | 10 contacts → |
“We are an Austrian consulting company focusing on planning and implementing future-oriented sustainable energy solutions for responsible people and companies.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Ökosolar PVoekosolar.com HQ: Weißkirchen, AustriaReported employees: 11-50 | Weißkirchen, Austria | 11-50 | Exact match | 8 contacts → |
“Ökosolar ist ein führender Anbieter im Bereich Photovoltaik mit einer klaren Mission: die breite Nutzung von erneuerbarer Sonnenenergie mithilfe von qualitativ hochwertigen…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Nikko Engineering Gmbhnikko-engineering.at HQ: Baden, AustriaReported employees: 1-10 | Baden, Austria | 1-10 | Exact match | 7 contacts → |
“Nikko Engineering ist ein Ingenieurbüro für Elektrotechnik und ausschließlich im Bereich Photovoltaik tätig.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Doma VKWdomavkw.at HQ: Satteins, AustriaReported employees: 11-50 | Satteins, Austria | 11-50 | Exact match | 7 contacts → |
“Wir sind seit 1992 im Dienst der Sonne tätig.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | I2m Gmbhi2m.at HQ: Graz, AustriaReported employees: 1-10 | Graz, Austria | 1-10 | Exact match | 7 contacts → |
“i2m Unternehmensentwicklung GmbH is a research-driven technology development and innovation consultancy founded in Graz, Austria in 2014.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: Heiligenkreuz, AustriaReported employees: 11-50 | Heiligenkreuz, Austria | 11-50 | Exact match | 7 contacts → |
“With our energy management know-how, we provide comprehensive advice to municipalities through to companies and private individuals on the basis of energy management analyses…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Green Electrics Licht & Energietechnik Gmbhgreen-electrics.at HQ: Gleisdorf, AustriaReported employees: 51-200 | Gleisdorf, Austria | 51-200 | Exact match | 7 contacts → |
“Green Electrics unterstützt Sie als Komplettanbieter zuverlässig mit innovativen Lösungen in allen energiewirtschaftlichen Belangen zum Thema Licht, Photovoltaik, Smart Home und…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Solah Gmbhsolah-group.com HQ: Mattersburg, AustriaReported employees: 11-50 | Mattersburg, Austria | 11-50 | Exact match | 7 contacts → |
“Wir haben es uns seit 2011 zur Aufgabe gemacht, das Potential der Sonne als Energiequelle zu nutzen.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Decision Advisory Group Gmbhdecision-advisory.com HQ: Vienna, AustriaReported employees: 1-10 | Vienna, Austria | 1-10 | Exact match | 6 contacts → |
“We address the most urgent challenges of data centre operators, industrial companies, municipalities and the energy sector when it comes to transforming their infrastructure at…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Energy Solutions Gmbhenergyplus.at HQ: Engerwitzdorf, AustriaReported employees: 1-10 | Engerwitzdorf, Austria | 1-10 | Exact match | 6 contacts → |
“Energy+- your partner for renewable energies.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Sparkspire Gmbhsparkspire.com HQ: Vienna, AustriaReported employees: 1-10 | Vienna, Austria | 1-10 | Exact match | 5 contacts → |
“sparkspire is a Vienna-based, independent management and technology consultancy focused exclusively on the energy industry.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | PTM Energyptm.energy HQ: Kirchbichl, AustriaReported employees: 1-10 | Kirchbichl, Austria | 1-10 | Exact match | 5 contacts → |
“Unsere Firmenphilosophie als Energieberatungsunternehmen basiert auf dem Ziel, unseren Kunden dabei zu helfen, ihre Energieeffizienz zu verbessern und ihre Energiekosten zu…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | D&e Consultingdue-consulting.at HQ: Vienna, AustriaReported employees: 1-10 | Vienna, Austria | 1-10 | Exact match | 5 contacts → |
“A Short History Originally established in 2011 as a joint venture between denkstatt GmbH and ENERTEC - Naftz & Partner GmbH & Co KG, the company known as denkstatt & enertec (d&e…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Connesso Energy Gmbhconnesso.at HQ: Vienna, AustriaReported employees: 1-10 | Vienna, Austria | 1-10 | Exact match | 4 contacts → |
“Erneuerbare Energien” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Renewable energy optimization consultants: dataset insights
October 22, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
102 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for Austria, so it is reported there. Company counts and contact totals on this page are exact for Austria, over 102 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 22, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for renewable energy optimization consultants?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many renewable energy optimization consultants did RevenueBase find based in Austria?
The saved snapshot records 102 matching company records, 516 tracked contacts and 215 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 22, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 renewable energy optimization consultants based in Austria. Snapshot: October 22, 2026. https://revenuebase.ai/companies/renewable-energy-optimization-consultants/austria.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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