Company lists · Data refreshed September 2026

Top 13 Alternative energy companies based in Warsaw, Poland

Name: Alternative energy companies based in Warsaw, Poland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 34 companies tracked

RevenueBase identified 34 alternative energy companies headquartered in Warsaw, Poland as of September 2026 and tracks 927 professional contacts across them, including 439 with verified work emails and 6 with mobile numbers. Warszawa is the largest hub.

This list covers alternative energy companies headquartered in Warsaw, Poland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

34Companies

927Contacts tracked

439Verified emails

6Mobile numbers

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The 13 largest alternative energy companies based in Warsaw, Poland

Ranked by team size

Top 13 of 34 alternative energy companies based in Warsaw, Poland, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to alternative energy companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Polenergia	Partial evidence	Warsaw, PolandHQ checked Sep 17, 2026	501-1,000	258 contacts →
	Partial evidence “Polenergia is the largest privately-owned Polish energy group, consisting of vertically integrated companies operating in the areas of renewable and low-emission energy…” Source: RevenueBase Database · checked Sep 17, 2026
2	R.Power Renewables	Partial evidence	Warsaw, PolandHQ checked Sep 17, 2026	501-1,000	210 contacts →
	Partial evidence “We power the world with green energy!” Source: RevenueBase Database · checked Sep 17, 2026
3	Quanta Energy	Partial evidence	Warsaw, PolandHQ checked Sep 17, 2026	51-200	98 contacts →
	Partial evidence “Quanta Energy develops, operates and owns solar assets for corporations across Europe to accelerate the energy transition.” Source: RevenueBase Database · checked Sep 17, 2026
4	Green Capital S.A	Partial evidence	Warsaw, PolandHQ checked Sep 17, 2026	51-200	76 contacts →
	Partial evidence “We are a capital group that has been co-creating the renewable energy market in Europe for years, consisting of several dozen companies with share capital exceeding 185 million…” Source: RevenueBase Database · checked Sep 17, 2026
5	Enerconet	Partial evidence	Warsaw, PolandHQ checked Sep 17, 2026	1-10	25 contacts →
	Partial evidence “Grupa Enerconet oraz powiązane z nią spółki wytwórcze mają znaczący, przekraczający 0,7 TWh rocznie, udział w produkcji energii ze źródeł odnawialnych (OZE) w Polsce.” Source: RevenueBase Database · checked Sep 17, 2026
6	Greenart	Partial evidence	Warsaw, PolandHQ checked Sep 17, 2026	11-50	19 contacts →
	Partial evidence “Jesteśmy jedną z najszybciej rozwijających się firm w branży odnawialnych źródeł energii.” Source: RevenueBase Database · checked Sep 17, 2026
7	MDI Energia S.A	Indirect evidence	Warsaw, PolandHQ checked Sep 17, 2026	51-200	15 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
8	Synergio S.A	Partial evidence	Warsaw, PolandHQ checked Sep 17, 2026	51-200	14 contacts →
	Partial evidence “SYNERGIO SA is the pioneer in developing intelligent solutions that pave the way for nature friendly and renewable energy sourcing for individual households and businesses.” Source: RevenueBase Database · checked Sep 17, 2026
9	European Energy - Polska	Partial evidence	Warsaw, PolandHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “Read ENG below] European Energy od 2004 roku, mając ambicje wspierać rozwój niezależnego europejskiego systemu energetycznego, jest spółką realizującą pełny cykl produkcji…” Source: RevenueBase Database · checked Sep 17, 2026
10	Horizons Sp. Z O.O	Partial evidence	Warsaw, PolandHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “Horizons is consultancy and engineering company involved in projects related to transformation of energy system, focusing on the renewable energy market.” Source: RevenueBase Database · checked Sep 17, 2026
11	Nebo Solar	Indirect evidence	Warsaw, PolandHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “Nebo Solar specializes in the development of utility-scale solar projects, as well as providing consultancy in this area.” Source: RevenueBase Database · checked Sep 17, 2026
12	Volta Polska	Indirect evidence	Warsaw, PolandHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “Our mission: We support businesses and local authorities in decarbonisation by offering cPPA (corporate PPA) and SaaS (Solar as a Service) contracts, which secure a direct…” Source: RevenueBase Database · checked Sep 17, 2026
13	GEO Renewables	Indirect evidence	Warsaw, PolandHQ checked Sep 17, 2026	11-50	2 contacts →
	Indirect evidence “Geo Renewables is a renewables & environment company based out of Building New City, Street.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: alternative energy companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names alternative energy companies.
Partial evidence: Its own public description names part of alternative energy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name alternative energy companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 13 of 34 alternative energy companies based in Warsaw, Poland

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Alternative energy companies based in Warsaw, Poland at a glance

As of Sep 17, 2026

47.4%Verified-email coverage

0.6%Mobile-number coverage

27.3Average contacts per company

11-50Median size (employees)

138.2%Largest-city concentration · Warszawa

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 20.0d

3300–30

9631–60

361–90

090–180

10180+

Company record updated

Median 57.0d

00–30

50931–60

25561–90

10290–180

61180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among alternative energy companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Warsaw, Poland whose own description of what they do matches “alternative energy companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names alternative energy companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among alternative energy companies, and records with no verified work email. Companies headquartered outside Warsaw are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 439 across the full list. 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 September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Alternative energy companies by metro in Poland

Alternative energy companies in Warszawa47
Alternative energy companies in Warsaw34

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names alternative energy companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many alternative energy companies are there based in Warsaw, Poland?

RevenueBase identified 34 alternative energy companies headquartered in Warsaw, Poland as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Polenergia, headquartered in Warsaw, tops this list with the largest team on record.

Which city has the most alternative energy companies?

Warszawa leads with 47 headquartered companies, followed by Warsaw (34) and Gdansk (13).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 439 verified decision-maker contacts tracked across these 34 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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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 Smart Search, 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.