Company lists · Data refreshed September 2026

Top 25 Energy and sustainability consultants based in India

Name: Energy and sustainability consultants based in India
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 1,213 companies tracked

RevenueBase identified 1,213 energy and sustainability consultants headquartered in India as of September 2026 and tracks 14,762 professional contacts across them, including 2,729 with verified work emails. Pune is the largest hub.

This list covers energy and sustainability consultants headquartered in India, 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 21, 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 21, 2026 86% judged on-target in blind review

1,213Companies

14,762Contacts tracked

2,729Verified emails

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The 25 largest energy and sustainability consultants based in India

Ranked by team size

Top 25 of 1,213 energy and sustainability consultants based in India, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to energy and sustainability consultants: 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	Cleanmax	Partial evidence	Mumbai, IndiaHQ checked Sep 21, 2026	201-500	735 contacts →
	Partial evidence “CleanMax is India’s largest commercial and industrial (“C&I”) renewable energy provider with 3 GW of operational, owned and managed capacity.” Source: RevenueBase Database · checked Sep 21, 2026
2	Vikran Engineering LTD	Partial evidence	Thane, IndiaHQ checked Sep 21, 2026	501-1,000	661 contacts →
	Partial evidence “M/s VIKRAN Engineering Ltd is a reputed and established engineering company specializing in providing comprehensive solutions in the fields of renewable energy, engineering…” Source: RevenueBase Database · checked Sep 21, 2026
3	Serentica	Partial evidence	Gurugram, IndiaHQ checked Sep 21, 2026	201-500	470 contacts →
	Partial evidence “Serentica Renewables India Private Limited,(Serentica) is a is an end-to-end energy solutions company enabling large-scale heavy energy intensive industries and sector to…” Source: RevenueBase Database · checked Sep 21, 2026
4	SIPL	Indirect evidence	Noida, IndiaHQ checked Sep 21, 2026	n/a	400 contacts →
	Indirect evidence “SIPL Pvt Ltd is an established and reputed firm in the Sustainable domain since 2008.” Source: RevenueBase Database · checked Sep 21, 2026
5	Kosol Energie	Partial evidence	Ahmedabad, IndiaHQ checked Sep 21, 2026	501-1,000	301 contacts →
	Partial evidence “At KOSOL Energie, a core team of experienced engineers and trained professionals collaborate seamlessly to generate innovative solutions aimed at replacing fossil fuels with…” Source: RevenueBase Database · checked Sep 21, 2026
6	Apollo Green Energy Limited	Partial evidence	Gurgaon, IndiaHQ checked Sep 21, 2026	1,001-5,000	287 contacts →
	Partial evidence “Apollo Green Energy Limited (AGEL) is a leading EPC company specializing in renewable energy solutions.” Source: RevenueBase Database · checked Sep 21, 2026
7	Enzen Global Solutions	Partial evidence	Bengaluru, IndiaHQ checked Sep 21, 2026	1,001-5,000	277 contacts →
	Partial evidence “Enzen Global Solutions - India is part of the Enzen Group, a global, professional, knowledge practice that focuses on gaining, refining and sharing expertise in the energy and…” Source: RevenueBase Database · checked Sep 21, 2026
8	Sgurrenergy	Partial evidence	Pune, IndiaHQ checked Sep 21, 2026	201-500	226 contacts →
	Partial evidence “SgurrEnergy was originally established in Glasgow, UK in 2002 with an aim to excel in renewable energy consulting.” Source: RevenueBase Database · checked Sep 21, 2026
9	Exact SUN India Pvt. LTD	Indirect evidence	Khopoli, IndiaHQ checked Sep 21, 2026	51-200	225 contacts →
	Indirect evidence “Exact Sun India specializes in delivering comprehensive mechanical, structural, and electrical design services, along with full-service installation solutions for both industrial…” Source: RevenueBase Database · checked Sep 21, 2026
10	Sorigin Group	Indirect evidence	Pune, IndiaHQ checked Sep 21, 2026	201-500	218 contacts →
	Indirect evidence “SORIGIN GROUP is a comprehensive and bespoke 360° services provider that empowers its partners to achieve long-term success through collaboration and technology.” Source: RevenueBase Database · checked Sep 21, 2026
11	D2o	Partial evidence	Jaipur, IndiaHQ checked Sep 21, 2026	51-200	217 contacts →
	Partial evidence “Design2Occupancy Services LLP (D2O) is a leading organization providing a platform and solutions in Energy Efficiency Analysis and Energy Code Compliances, Climate Change…” Source: RevenueBase Database · checked Sep 21, 2026
12	Power Projects	Strong evidence	Chennai, IndiaHQ checked Sep 21, 2026	51-200	188 contacts →
	Strong evidence “Power projects is a specialized Electrical Engineering and Power System Consultancy firm delivering solutions for Grid Code Compliance, BESS, Renewable Energy, Power Plants, and…” Source: RevenueBase Database · checked Sep 21, 2026
13	Mercados Energy Markets India	Partial evidence	New Delhi, IndiaHQ checked Sep 21, 2026	51-200	178 contacts →
	Partial evidence “Mercados Energy Markets India Private Limited (Mercados EMI) is a global consulting firm specializing in power and energy.” Source: RevenueBase Database · checked Sep 21, 2026
14	Lead Consultancy And Engineering Services India PVT LTD	Partial evidence	Bengaluru, IndiaHQ checked Sep 21, 2026	51-200	174 contacts →
	Partial evidence “LEAD Consultancy & Engineering Services (India) Private Limited (LCES) has been started by a team of qualified professionals with vast experience and expertise in the areas of…” Source: RevenueBase Database · checked Sep 21, 2026
15	Gensol Group	Indirect evidence	Ahmadabad, IndiaHQ checked Sep 21, 2026	1,001-5,000	165 contacts →
	Indirect evidence “Gensol, a frontrunner in the Solar and Renewables Industry, is a rare mix of youth and experience.” Source: RevenueBase Database · checked Sep 21, 2026
16	Greenfinch Real Estate Engineers & Consultants	Partial evidence	Jaipur, IndiaHQ checked Sep 21, 2026	501-1,000	144 contacts →
	Partial evidence “Greenfinch Real Estate Engineers and Consultants Pvt.” Source: RevenueBase Database · checked Sep 21, 2026
17	Greentree Global	Strong evidence	Noida, IndiaHQ checked Sep 21, 2026	51-200	143 contacts →
	Strong evidence “GreenTree Global is one of the leading Sustainability Consulting organisations providing Energy Efficiency & Climate Change Services like Integrated Sustainability Services…” Source: RevenueBase Database · checked Sep 21, 2026
18	First Energy A Thermax Group Company	Partial evidence	Pune, IndiaHQ checked Sep 21, 2026	51-200	141 contacts →
	Partial evidence “First Energy, a leading renewable energy manager that help its customers’ transition to sustainable manufacturing.” Source: RevenueBase Database · checked Sep 21, 2026
19	Solon India PVT LTD	Indirect evidence	Hyderabad, IndiaHQ checked Sep 21, 2026	51-200	132 contacts →
	Indirect evidence “We, the Founder executives and Senior Management of Solon India Pvt Ltd have four decades of experience in the sector.” Source: RevenueBase Database · checked Sep 21, 2026
20	Spectral Services Consultants Pvt. LTD	Partial evidence	Noida, IndiaHQ checked Sep 21, 2026	201-500	113 contacts →
	Partial evidence “Spectral is a 500-employee, Indian market leader in the provision of mechanical, electrical and specialist consultancy services for national and global clients who are looking to…” Source: RevenueBase Database · checked Sep 21, 2026
21	Environmental Design Solutions	Partial evidence	New Delhi, IndiaHQ checked Sep 21, 2026	11-50	110 contacts →
	Partial evidence “Environmental Design Solutions [EDS] is a sustainability advisory firm focusing on the built environment.” Source: RevenueBase Database · checked Sep 21, 2026
22	Kosher Climate	Indirect evidence	Bangalore, IndiaHQ checked Sep 21, 2026	51-200	91 contacts →
	Indirect evidence “Kosher Climate is where Corporate aspirations are met with Climate Change Goals.” Source: RevenueBase Database · checked Sep 21, 2026
23	Beratung Consultants Private Limited	Partial evidence	Mumbai, IndiaHQ checked Sep 21, 2026	51-200	89 contacts →
	Partial evidence “We at Beratung dedicate our expertise to provide Engineering Design, Commissioning management, Sustainability & Other Technical solutions to our Clients.” Source: RevenueBase Database · checked Sep 21, 2026
24	Idam Infrastructure Advisory Pvt. LTD	Indirect evidence	Mumbai, IndiaHQ checked Sep 21, 2026	51-200	84 contacts →
	Indirect evidence “Idam Infrastructure Advisory Pvt.” Source: RevenueBase Database · checked Sep 21, 2026
25	Conserve Consultants	Partial evidence	Chennai, IndiaHQ checked Sep 21, 2026	51-200	80 contacts →
	Partial evidence “Conserve Consultants Pvt.” Source: RevenueBase Database · checked Sep 21, 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: energy and sustainability consultants. 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 energy and sustainability consultants.
Partial evidence: Its own public description names part of energy and sustainability consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy and sustainability consultants. 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 25 of 1,213 energy and sustainability consultants based in India

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Energy and sustainability consultants based in India at a glance

As of Sep 21, 2026

18.5%Verified-email coverage

12.2Average contacts per company

11-50Median size (employees)

6.8%Largest-city concentration · Pune

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

596

11-50

445

51-200

132

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for India, so it is reported there. Company counts and contact totals on this page are exact for India, over 1,213 companies.

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 energy and sustainability consultants, 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 India whose own description of what they do matches “energy and sustainability consultants”. 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 energy and sustainability consultants), 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 energy and sustainability consultants, and records with no verified work email. Companies headquartered outside India 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, 2,729 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 21, 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.

Energy and sustainability consultants by metro

Energy and sustainability consultants in Pune82
Energy and sustainability consultants in Mumbai78
Energy and sustainability consultants in Chennai69
Energy and sustainability consultants in New Delhi64
Energy and sustainability consultants in Ahmedabad47
Energy and sustainability consultants in Hyderabad44
Energy and sustainability consultants in Bangalore42
Energy and sustainability consultants in Noida41
Energy and sustainability consultants in Bengaluru37
Energy and sustainability consultants in Gurugram37
Energy and sustainability consultants in Delhi36
Energy and sustainability consultants in Kolkata33
Energy and sustainability consultants in Jaipur28
Energy and sustainability consultants in Gurgaon26

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 energy and sustainability consultants, 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 energy and sustainability consultants are there based in India?

RevenueBase identified 1,213 energy and sustainability consultants headquartered in India 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?

Cleanmax, headquartered in Mumbai, tops this list with the largest team on record.

Which city has the most energy and sustainability consultants?

Pune leads with 82 headquartered companies, followed by Mumbai (78) and Chennai (69).

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 2,729 verified decision-maker contacts tracked across these 1,213 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 21, 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.