Company lists
The Tamil Nadu edition · 2026

Energycompanies in Tamil Nadu

Solar, wind, power equipment, storage, oil & gas and more: the companies building energy in Tamil Nadu, with their founders, funding, team size and business models.

545 company profiles241 with reported revenue14 with recorded fundingSeptember 2026 edition
Tamil Nadu · Photo: Wikimedia Commons (Creative Commons Attribution-ShareAlike 4.0)

Recent energy business events in Tamil Nadu

Funding, M&A, contract wins and launches involving 624 energy companies in Tamil Nadu, last 24 months: 57 Contracts · 8 M&A deals · 5 funding rounds. Newest first; companies and investors link to their Fliar profiles. Latest event in our news feed: May 2026.

M&AAcquisition · Pending

Dalmia Bharat Refractories acquires Dalmia

The company is also in talks to acquire Dalmia Magnesite Corporation, pending regulatory approval.

Refractory Industry
ContractSupply

Supreme Power Equipment · client: Na

Supreme Power Equipment Limited has secured a new order worth Rs. 28.50 crore from an EPC company based in Karnataka.

Power equipment manufacturing
ContractSupply

Supreme Power Equipment · client: Na

Supreme Power Equipment on Saturday announced securing transformer supply orders worth ₹128 crore. The company has received four orders by different entities to supply power transformers…

Power infrastructure
ContractInfrastructure

Refex industries · client: National Highways Authority of India

Refex Industries Limited has secured a significant contract valued at approximately ₹32.45 crore, including GST, for the transportation of pond ash to NHAI PWD road construction sites.

Infrastructure
ContractSupply

GHV Infra Projects Ltd · client: Enmas epc power projects

In February this year, GHV Infra Projects said it had received a work order worth about ₹123 crore from Enmas EPC Power Projects Limited for the supply of grid-connected rooftop solar…

Energy
ContractSupply

Refex industries · client: Na

Refex Industries Limited has secured a significant order valued at approximately ₹70.2 crore for the supply of bulk industrial commodities.

Steel sector
M&AAcquisition · Completed

Refex Holding Private Limited acquires Refex industries

Refex Industries Limited has disclosed the acquisition of 1,00,000 equity shares by its promoter entity Refex Holding Private Limited through an open market purchase.

Industries
ContractSupply

GHV Infra Projects · client: Enmas epc power projects

GHV Infra Projects has won a work order worth approximately Rs 123 crore from Enmas EPC Power Projects. The company will supply materials for 28.83 MWp grid-connected rooftop solar…

ContractInfrastructure

Bgr energy systems · client: TANTRANSCO

Engineering and construction major BGR Energy Systems Ltd on Tuesday (February 3) said Tamil Nadu Transmission Corporation Ltd (TANTRANSCO) has terminated the EPC contract it had awarded…

Infrastructure
ContractInfrastructure

Bgr energy systems · client: Chennai Metropolitan Water Supply and Sewage Board (CMWSSB)

Earlier in September 2024, BGR Energy Systems said it had received a notice of contract termination from the Chennai Metropolitan Water Supply and Sewage Board (CMWSSB) regarding the…

Infrastructure
FundingCatalytic financing support

E-hands energy

Miller Center Capital, in partnership with fund manager Beneficial Returns, has announced catalytic financing support for E-Hands Energy, a Chennai-based renewable energy enterprise…

Investors Miller Center Capital, Beneficial returns
Renewable Energy
ContractSupply

INDO TECH TRANSFORMERS · client: Ntpc

Indo Tech Transformers: Company bags order worth ₹91.26 cr for supply of 11 transformers for various NTPC projects.

ContractSupply

INDO TECH TRANSFORMERS · client: Four EF Constructions

Indo Tech Transformers Limited has added a major win to its order book, confirming that the company has received a fresh purchase order worth ₹91.26 crore, excluding taxes. The order,…

Power
ContractSupply

Shell Energy India · client: Think gas

THINK Gas, THINK Gas, the merged entity of AG&P Pratham and THINK Gas, has announced a long-term gas sales and purchase agreement with Shell Energy India, marking a major milestone in…

Natural gas
M&AAcquisition · Announced

Varanium Capital Advisors acquires Supreme Power Equipment

Varanium Capital Advisors, an asset management firm , recently bought 2.4 lakh shares of Supreme Power Equipment Limited by paying an average price of Rs 227.42 per share, aggregating to…

M&AAcquisition

BofA Securities Europe SA acquires Chennai petroleum corporation

Meanwhile, BofA Securities Europe SA has net bought 7.62 lakh shares (0.51 percent stake) in Chennai Petroleum Corporation at Rs 868.59 per share, for Rs 66.2 crore.

M&AAcquisition · Completed

BVK Group acquires GKD India

This acquisition, executed in the previous fiscal year, results in BVK Group acquiring 100% equity in the joint venture, which will now operate under the banner of WMW Industries Ltd.

Technical mesh and filtration solutions
ContractSupply

Oriana power · client: Tangedco

Oriana Power Limited has signed a Battery Energy Storage Purchase Agreement (BESPA) with Tamil Nadu Power Distribution Corporation Limited (TANGEDCO) to set up a 50MW/100MWh Battery…

Renewable Energy
ContractTechnology

Vensys Energy · client: Refex industries

The company, a subsidiary of the NSE-listed Refex Industries Ltd, has concluded a licence agreement with Vensys Energy AG, Germany — a leading wind turbine technology owner.

Wind Turbine Technology
ContractSupply

Polaris Smart Metering · client: Think gas

Think Gas, a key player in India’s City Gas Distribution (CGD) sector, has entered into a historic agreement with Polaris Smart Metering for the supply of one million smart gas meters.…

Energy
ContractSupply

S&s power switchgear · client: Godrej & Boyce Manufacturing

S&S Power Switchgear Limited announced receiving one of the largest orders in its history, valued at more than Rs. 15 crores, from Godrej & Boyce Manufacturing Company Limited.

Power sector
FundingNCD

Swelect energy systems

Additionally, SWELECT Group secured Rs 290 crore via Non-Convertible Debentures (NCDs) through a private placement with India Infradebt Limited.

Investors India Infradebt
Solar energy
Contract

India Infradebt · client: Swelect energy systems

Additionally, SWELECT Group has raised ₹290 crore funding through Non-Convertible Debentures (NCDs) via a private placement with India Infradebt Limited.

M&AMerger · Announced

Ag&p pratham acquires Think gas

AG&P Pratham and THINK Gas have announced the merger of brand identities under a single brand, THINK Gas.

City gas distribution
FundingPrivate placement

Swelect energy systems

Swelect Energy Systems on Tuesday said it has raised Rs 138.5 crore by issuing non-convertible debentures on a private placement basis to India Infradebt Limited.

Investors India Infradebt
Energy
ContractSupply

Polaris Smart Metering Pvt Ltd · client: Think gas

Polaris Smart Metering Pvt Ltd, a leading smart metering solution provider, today announced that it has signed a landmark contract with THINK Gas to supply 1 million smart gas meters.

Energy metering
M&AAcquisition · Announced

Super sales india acquires Srri Shamundi Spinners Energy Private Limited

Super Sales India Limited announced the acquisition of a 26% stake in Srri Shamundi Spinners Energy Private Limited.

ContractTechnology

Va tech wabag · client: Chennai petroleum corporation

VA TECH WABAG said that it has secured order worth Rs 145 crore from Chennai Petroleum Corporation (CPCL) for installing desalination water pipelines at CPCL's Kattupalli plant.

Water technology
ContractTechnology

Zaggle Prepaid · client: AGP City Gas

The first order won by the company is a five year contract for Zaggle's fleet program from AGP City Gas.

ContractService

Bharat heavy electricals · client: Tangedco

Bharat Heavy Electricals Limited (BHEL) has been appointed as the project engineering management company for this initiative by TANGEDCO.

Green Hydrogen

Energy companies in Tamil Nadu, by revenue

Browse energy companies in Tamil Nadu by reported revenue, one-year revenue growth, revenue model, age and stage. The 50 companies below are the largest by their most recent reported revenue among 241 energy companies in Tamil Nadu that have filed a figure in the last four years. Every figure keeps its own reporting period, so compare periods before comparing amounts.

Showing 25 of 50

Provider of solar panels and clean, renewable energy solutions

Solar energy
₹89,609.55 crFY 2023-24
+13%2023–2024
—Not available
33 yr1993
0none in 3 months

Oil Refining Company

Oil & gas downstream
₹79,283.01 crFY 2023-24
Not reported
1,678-6% 12 mo to Sep 2024LinkedIn · Jul 2026
61 yr1965
0none in 3 months

Provider of electricity and transmission development projects

Electricity transmission & distribution project developer
₹2,641.65 crFY 2021-22
Not reported
174LinkedIn · Jul 2026
14 yr2012
—No postings tracked

Manufacturer of multiple electrical equipment

Electricity transmission & distribution equipment
₹2,258.88 crFY 2021-22
Not reported
16+13% 12 mo to Jul 2024LinkedIn · Jul 2026
20 yr2006
0none in 3 months

Provider of refrigerant gases, ash management, green mobility, and power solutions

Industrial gases
₹2,518.02 crFY 2024-25
+80%2024–2025
98-30% 12 mo to Mar 2023recorded Mar 2023
24 yr2002
0none in 3 months · last posted Jan 2025

Everrenew is a renewable energy company that offers affordable and reliable wind power and solar power investment solutions

Wind energy
₹2,385.13 crFY 2023-24
+348%2023–2024
370+408% 12 mo to Sep 2023LinkedIn · Jul 2026
7 yr2019
0none in 3 months · last posted Jan 2025

Manufactures linear alkylbenzene and other organic chemicals

Oil & gas downstream
₹1,705.21 crFY 2023-24
Not reported
376-9% 12 mo to Mar 2023recorded Mar 2023
42 yr1984
—No postings tracked

Provider of electricity development project services

Electricity transmission & distribution project developer
₹1,237.51 crFY 2022-23
Not reported
30+15% 12 mo to Sep 2024recorded Sep 2024
14 yr2012
—No postings tracked

Manufactures intermediates and specialty chemicals

Oil & gas downstream
₹1,061.51 crFY 2023-24
Not reported
353+11% 12 mo to Mar 2023recorded Mar 2023
40 yr1986
—No postings tracked

Oil and natural gas production and exploration company

Oil & gas upstream
₹767.81 crFY 2023-24
Not reported
481+11% 12 mo to Jun 2024LinkedIn · Jul 2026
43 yr1983
—No postings tracked

Manufacturer of transformers

Electricity transmission & distribution equipment
₹628.22 crFY 2024-25
+23%2024–2025
162-1% 12 mo to Sep 2024recorded Sep 2024
22 yr2004
0none in 3 months

EPC services for installation of solar farms

Solar energy
₹482.77 crFY 2024-25
+73%2024–2025
319+15% 12 mo to Jul 2024recorded Jul 2024
42 yr1984
0none in 3 months

Provider of solar energy operation and maintenance services

Solar energy
₹446.73 crFY 2023-24
+62%2023–2024
271+51% 12 mo to Sep 2024recorded Sep 2024
9 yr2017
0none in 3 months

Manufacturer of yarns & drive gears

Wind energy
₹374.72 crFY 2022-23
Not reported
894-8% 12 mo to Sep 2024recorded Sep 2024
45 yr1981
0none in 3 months

Engineering construction company that provides integrated design, detailed engineering, procurement, and project management services for industrial piping, HDD, and tankages projects

Electricity transmission & distribution project developer
₹296.19 crFY 2021-22
Not reported
397+33% 12 mo to Mar 2024LinkedIn · Jul 2026
66 yr1960
—No postings tracked

Utility-scale project developer

Wind energy
₹322.57 crFY 2024-25
+73%2024–2025
346-51% 12 mo to Jul 2024LinkedIn · Jul 2026
28 yr1998
0none in 3 months

Offers electrical manufacturing, engineering and testing services

Industrial automation equipment
₹307.01 crFY 2024-25
+6%2024–2025
1,588-13% vs previous recordLinkedIn · Jul 2026
31 yr1995
0none in 3 months

Manufacturer and exporter of granular & powdered activated carbon sourced from coconut shell

Bioenergy
₹291.35 crFY 2024-25
+24%2024–2025
7-1% 12 mo to Sep 2024LinkedIn · Jul 2026
30 yr1996
0none in 3 months

Provider of turnkey solutions in power, process, and water industries including project engineering, design, procurement, construction, and commissioning

Solar energy
₹253.49 crFY 2021-22
Not reported
946+10% 12 mo to Feb 2024LinkedIn · Jul 2026
24 yr2002
0none in 3 months · last posted Dec 2025

Online platform for designing and managing renewable energy power programs

Wind energy
₹283.02 crFY 2024-25
+5%2024–2025
172+7% 12 mo to Oct 2023LinkedIn · Jul 2026
20 yr2006
0none in 3 months

Independent transformer manufacturer, offering power and distribution transformer solutions for reliable and energy-efficient power distribution networks

Electricity transmission & distribution equipment
₹275.47 crFY 2024-25
+27%2024–2025
118LinkedIn · Jul 2026
20 yr2006
0none in 3 months

Leading natural gas distributor in gas distribution sector

Utilities
₹258.81 crFY 2022-23
Not reported
501+6% 12 mo to May 2024LinkedIn · Jul 2026
8 yr2018
0none in 3 months

Provider of green and sustainable energy solutions

Bioenergy
₹257.04 crFY 2024-25
+42%2024–2025
—Not available
2 yr2024
0none in 3 months

Provider of high-yielding sugar and bio-energy solutions through design, supply, installation, and process optimization of industrial equipment

Geothermal energy
₹202.08 crFY 2021-22
Not reported
175recorded
85 yr1941
—No postings tracked

Manufacturer of compressed air dryers for different sectors and applications

Oil & gas equipment
₹186.10 crFY 2021-22
Not reported
230recorded
30 yr1996
1postings · last posted Sep 2026
50 of 545 companies shown here · the full list is on Radar
Fliar Radar

Explore all 545 energy companies in Tamil Nadu on Radar

This page shows the top 50. Radar has the complete, filterable list with contacts and live company signals.

Open energy in Tamil Nadu on Radar
  • Every company, not just 50All 545 energy companies in Tamil Nadu, filterable by stage, funding, team size, revenue model and age.
  • Founders and decision-makersLeadership teams with roles and verified LinkedIn profiles, ready for outreach.
  • Live signalsFunding rounds, hiring, launches and M&A as they happen, with alerts on the companies you follow.
  • Save and exportBuild lists, compare companies side by side and export them from your Radar account.

Explore energy companies in Tamil Nadu by what you are looking for

Browse top energy companies in Tamil Nadu, from solar energy and wind energy firms to renewable energy startups in Tamil Nadu. You can also find energy companies hiring in Tamil Nadu and listed energy companies.

9 ways to explore energy in Tamil Nadu

Solar energy companies & installersWind energy companiesPower transmission & distribution companiesBattery & energy storage companiesOil & gas companies and servicesEnergy efficiency & bioenergy companies

Solar energy companies & installers

Solar panel suppliers, EPC contractors and solar project developers.

  1. Redington

    Provider of solar panels and clean, renewable energy solutions

    Solar energy
    See in list
  2. Swelect Energy Systems

    EPC services for installation of solar farms

    Solar energy
    See in list
  3. Renfra Energy

    Provider of solar energy operation and maintenance services

    Solar energy
    See in list
  4. Ace Renewtech

    Provider of solar energy services for homes & business

    Solar energy
    See in list
  5. Evolve Energy Group

    Manufacturer of solar inverters, modules, and balance of system components

    Solar energy
    See in list

Wind energy companies

Wind turbine makers and wind power project developers.

  1. ReGen Powertech

    Manufacturer of wind turbines

    Wind energy
    Website
  2. Everrenew

    Everrenew is a renewable energy company that offers affordable and reliable wind power and solar power investment solutions

    Wind energy
    See in list
  3. Orient Green Power Company

    Online platform for designing and managing renewable energy power programs

    Wind energy
    See in list
  4. R.S. YARNS & POWER

    Developer of wind energy projects

    Wind energy
    See in list
  5. Pioneer Wincon

    Wind turbine manufacturer

    Wind energy
    See in list

Power transmission & distribution companies

Transformer manufacturers, electrical equipment makers and transmission project developers.

  1. PTS Powertronic Solutions

    Manufacturer of multiple electrical equipment

    Electricity transmission & distribution equipment
    See in list
  2. Indo Tech Transformers

    Manufacturer of transformers

    Electricity transmission & distribution equipment
    See in list
  3. Voltech Group

    Offers electrical manufacturing, engineering and testing services

    Industrial automation equipment
    See in list
  4. Wilson Power Solutions

    Independent transformer manufacturer, offering power and distribution transformer solutions for reliable and energy-efficient power distribution networks

    Electricity transmission & distribution equipment
    See in list
  5. Sicame

    Company specializing in products and services related to the transport and distribution of electrical energy

    Electricity transmission & distribution project developer
    See in list
88 companies in Tamil Nadu

Battery & energy storage companies

Makers of lead-acid and lithium batteries and energy storage systems.

  1. High Energy Batteries

    Manufacturer of multi-type of batteries for military and commercial use

    Energy storage
    Website
  2. Jayachandran Industries

    Manufacturers of lead-acid batteries

    Energy storage
    Website
  3. Jascon Energy

    Manufacturer of lithium battery

    Energy storage
    Website
  4. Velsine Technologies

    Provider of the lead-acid battery manufacturing company

    Energy storage
    Website
  5. Ultimate Associates

    Supplier of inverters, batteries, and solar products

    Solar energy
    Website

Oil & gas companies and services

Oilfield services, equipment suppliers and fuel distribution businesses.

  1. Chennai Petroleum Corporation

    Oil Refining Company

    Oil & gas downstream
    See in list
  2. HOEC

    Oil and natural gas production and exploration company

    Oil & gas upstream
    See in list
  3. AG&P Pratham

    Leading natural gas distributor in gas distribution sector

    Utilities
    See in list
  4. Enmas India

    Provider of oil & gas refining, petro chemical, cement industries expanding services

    Oilfield services
    Website
  5. Petro6 E&C

    Engineering & construction is an engineering, project management, and construction company specializing in executing complex onshore and offshore oil and gas projects

    Oilfield services
    Website

Energy efficiency & bioenergy companies

Energy-saving lighting, metering and audits, plus biofuel and biomass energy firms.

  1. Kalpaka

    Manufacturer and exporter of granular & powdered activated carbon sourced from coconut shell

    Bioenergy
    See in list
  2. SLB Ethanol

    Manufacturer of renewable energy solutions, specifically focused on sustainable ethanol production

    Bioenergy
    See in list
  3. Orril

    301 Moved Permanently

    Services for energy efficiency
    See in list
  4. Schnell

    Provider of smart city lighting solutions and IoT systems. It offers a complete solution encompassing LED lighting, remote monitoring, and cloud computing to optimize lighting levels, reduce energy consumption, and lower maintenance costs. The company develops embedded systems, web and mobile applications, and low-energy wireless technologies for its IoT systems. Its expertise extends to the design and implementation of smart street lighting, smart poles, and related infrastructure. It also provides solutions for other sectors, including agriculture and industrial applications.

    Services for energy efficiency
    See in list
  5. Futura

    Manufacturer of LED lighting solutions with over a decade of experience in architectural lighting

    Energy efficiency
    Website

Energy startups in Tamil Nadu

Recently founded energy companies in Tamil Nadu.

  1. Carbure Activated Carbon

    Manufacturer and exporter of coconut based steam activated carbon products

    Utilities
    See in list
  2. Remon Solutions

    Provider of engineering consultation and software for the renewable energy sector

    Solar energy
    Website
  3. Windplus

    Specializing in wind turbine project development, serving clients in the renewable energy industry

    Wind energy
    Website
  4. Octagon Green Energy

    Provider of solar planning and designing services

    Solar energy
    Website
  5. Kovai Solar

    Solar power developer and system integrator, providing solar solutions for residential, commercial, and industrial clients

    Solar energy
    Website
41 companies in Tamil Nadu

Energy companies hiring in Tamil Nadu

Energy companies in Tamil Nadu with open jobs.

  1. Refex Group

    Provider of refrigerant gases, ash management, green mobility, and power solutions

    Industrial gases
    See in list
  2. Everrenew

    Everrenew is a renewable energy company that offers affordable and reliable wind power and solar power investment solutions

    Wind energy
    See in list
  3. Operational Energy Group

    Provider of turnkey solutions in power, process, and water industries including project engineering, design, procurement, construction, and commissioning

    Solar energy
    See in list
  4. Summits Hygronics

    Manufacturer of compressed air dryers for different sectors and applications

    Oil & gas equipment
    See in list
  5. Ace Renewtech

    Provider of solar energy services for homes & business

    Solar energy
    See in list
14 companies in Tamil Nadu

Listed energy companies in Tamil Nadu

Publicly listed energy companies based in Tamil Nadu.

  1. Chennai Petroleum Corporation

    Oil Refining Company

    Oil & gas downstream
    See in list
  2. Refex Group

    Provider of refrigerant gases, ash management, green mobility, and power solutions

    Industrial gases
    See in list
  3. TPL

    Manufactures linear alkylbenzene and other organic chemicals

    Oil & gas downstream
    See in list
  4. KKV Agro Powers

    Provider of electricity development project services

    Electricity transmission & distribution project developer
    See in list
  5. Manali Petrochemical

    Manufactures intermediates and specialty chemicals

    Oil & gas downstream
    See in list
18 companies in Tamil Nadu
Mobile reach

Top 10 energy apps from Tamil Nadu

The most-installed Android apps published by energy companies headquartered in Tamil Nadu — 4.7M installs between them. 15 companies on this page publish at least one app; each company (legal entity) appears once, with its most-installed app.

1 of 10
1

TNEB Mobile App(Official)

by TANGEDCO

Installs4.7M
Rating3.2918K ratings
Installs, year on year+21%
Last updatedJul 2025
View on Google Play ↗
TNEB Mobile App(Official) screenshot 1TNEB Mobile App(Official) screenshot 2TNEB Mobile App(Official) screenshot 3TNEB Mobile App(Official) screenshot 4TNEB Mobile App(Official) screenshot 5TNEB Mobile App(Official) screenshot 6
2

SNAK4EV

by SNAK4EV

Installs6K
Rating—
Last updatedMay 2026
View on Google Play ↗
SNAK4EV screenshot 1SNAK4EV screenshot 2SNAK4EV screenshot 3SNAK4EV screenshot 4
3

Catch Up

by Schnell

Installs6K
Rating—
Last updatedMay 2026
View on Google Play ↗
Catch Up screenshot 1Catch Up screenshot 2Catch Up screenshot 3Catch Up screenshot 4Catch Up screenshot 5Catch Up screenshot 6
5

Think Gas iReport

by THINK Gas

Installs4K
Rating—
Last updatedMar 2026
View on Google Play ↗
Think Gas iReport screenshot 1Think Gas iReport screenshot 2Think Gas iReport screenshot 3Think Gas iReport screenshot 4
7

NISSI Connect

by Nissi

Installs895
Rating—
Last updatedMay 2026
View on Google Play ↗
NISSI Connect screenshot 1NISSI Connect screenshot 2NISSI Connect screenshot 3NISSI Connect screenshot 4NISSI Connect screenshot 5NISSI Connect screenshot 6
The business behind the activity

Energy financials in Tamil Nadu

Revenue, profit and growth from the filed annual accounts of 217 energy companies in Tamil Nadu for FY24-25 — 267 of the 545 companies on this page file accounts with the Ministry of Corporate Affairs. The five largest earn 88% of the revenue, so medians describe the typical company better than totals.

combined revenue, FY24-25₹92,536.80 cr

217 companies filing accounts

combined net profit₹1,238.20 cr

1.3% aggregate margin

are profitable80%

173 of 217 companies

median revenue~₹13.6 cr

the typical company

median revenue growth+19%

into FY24-25

earned by the top five88%

revenue concentration

Six-year view

Combined revenue of filing companies

₹60,043.79 crFY19-20211 filers
₹53,236.97 crFY20-21218 filers
₹75,424.07 crFY21-22226 filers
₹109,214.82 crFY22-23228 filers
₹103,496.21 crFY23-24237 filers
₹92,536.80 crFY24-25217 filers

The number of companies filing changes each year; the three-year cohort below compares like with like.

Like-for-like

The same 193 companies over three years

-14%
FY22-23₹107,290.83 cr₹4,648.53 cr net
FY23-24₹98,774.96 cr₹5,736.52 cr net
FY24-25₹92,036.99 cr₹1,224.29 cr net

Companies with accounts for all three years, so growth is not an artefact of who filed.

Scale and profit

Bigger companies are far more often profitable

Under ₹1 cr4340% profitable
₹1–10 cr5487% profitable
₹10–100 cr8388% profitable
₹100–1,000 cr3297% profitable
Over ₹1,000 cr5100% profitable

Companies by FY24-25 revenue. Bars show how many companies sit in each band.

Momentum

How fast revenue moved into FY24-25

Shrinking63
0–20%45
20–50%50
50–100%24
Doubled+29

211 companies with accounts for both years; median growth +19%.

Profitability

Profit is concentrated at the top

173profitable
44loss-making
1.3%aggregate margin
2.5%median margin

The aggregate margin is pulled up by a few large filers; the median shows the typical company.

Growth leaders · ₹10 cr+ revenue

Fastest growing, FY24-25

CompanyGrowthRevenue
Prosun EnergyPROSUN ENERGY PRIVATE LIMITED+340%₹50.88 cr
Real Fuel TechREAL FUEL TECH PRIVATE LIMITED₹39.91 cr
ShasanSHASAN ENGINEERING PRIVATE LIMITED+243%
Kyra PhotonKYRA PHOTON TECH PRIVATE LIMITED
SB Wind EnergySB WIND ENERGY PRIVATE LIMITED₹24.35 cr
TGEPLTIRUPATHII GREEN ENERGY PRIVATE LIMITED+202%₹38.57 cr
Profit leaders · ₹10 cr+ revenue

Highest net margins, FY24-25

CompanyMarginRevenue
HOECHINDUSTAN OIL EXPLORATION COMPANY LIMITED38.3%₹384.98 cr
EEPCENMAS EPC POWER PROJECTS LIMITED29.5%₹111.39 cr
CarbonMinusCARBON MINUS ENERGY PRIVATE LIMITED21.4%₹65.09 cr
High Energy BatteriesHIGH ENERGY BATTERIES (INDIA) LIMITED₹86.71 cr
SWOP EngineeringSWOP ENGINEERING PRIVATE LIMITED16.7%₹26.86 cr
SPS TransformersSPS TRANSFORMERS PRIVATE LIMITED
Inside the industry

Sub-sectors compared, FY24-25

Sub-sectorCompaniesRevenueMedian revenueProfitableMargin
Electricity transmission & distribution project developer17₹6,260.53 cr~₹7.4 cr71%3.3%
Electricity transmission & distribution equipment31₹3,746.56 cr~₹31.4 cr84%5.9%
Solar energy86₹2,780.18 cr~₹6.3 cr79%4.3%
Wind energy24₹969.07 cr~₹14.0 cr83%2.1%
Bioenergy9₹601.15 cr~₹12.3 cr78%3.8%
Oilfield services7₹283.90 cr~₹21.8 cr71%6.8%
Energy storage6₹108.09 cr~₹3.0 cr67%13.6%
Energy efficiency6₹78.96 cr~₹4.2 cr67%-8.7%
Leaders

Largest energy companies by revenue, FY24-25

Company · legal entityRevenueNet resultMarginGrowth
Chennai Petroleum CorporationCHENNAI PETROLEUM CORPORATION LIMITED₹71,093.43 cr₹173.53 cr0.2%-10%
IL&FS Tamil NaduIL&FS TAMIL NADU POWER COMPANY LIMITED₹4,572.59 cr₹166.73 cr3.6%-9%
Refex GroupREFEX INDUSTRIES LIMITED₹2,482.52 cr₹189.41 cr7.6%+79%
TPLTAMILNADU PETROPRODUCTS LIMITED₹1,846.71 cr₹51.43 cr2.8%+9%
Salzer GroupSALZER ELECTRONICS LIMITED₹1,388.35 cr4.5%+22%
KKV Agro PowersKKV AGRO POWERS LIMITED₹962.23 cr₹1.69 cr0.2%-38%
Manali PetrochemicalMANALI PETROCHEMICALS LIMITED₹669.27 cr−₹8.74 cr-1.3%-19%
Indo Tech TransformersINDO-TECH TRANSFORMERS LIMITED₹628.22 cr₹63.88 cr10.2%+23%
NRP ProjectsNRP PROJECTS PRIVATE LIMITED₹500.08 cr₹25.49 cr5.1%+6%
Swelect Energy SystemsSWELECT ENERGY SYSTEMS LIMITED₹482.77 cr₹8.58 cr1.8%+64%
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Standalone annual accounts filed with the Ministry of Corporate Affairs. Brands that share one legal entity are shown together and counted once.

Industry landscape report

Energy Industry Landscape of India

The financials above are one chapter. The full energy landscape of Tamil Nadu maps the whole industry — every segment, the capital behind it, the talent market and where the next opportunities are.

  • Market map of every sub-sector
  • Funding & company formation by year
  • Revenue, profit & financial strength
  • Digital footprint: traffic, apps, releases
  • Hiring, skills & pay
  • Founders & leaders
  • News & sentiment
  • Where demand runs ahead of supply
Read the energy landscape of Tamil Nadu
For investors and data teams

Put this intelligence into your own tools

The figures on this page come from Fliar’s company, funding and MCA filings data. Use it through the Investor Intelligence API and MCA financials feeds, or explore every company, filing and investor in Radar.

Capital & corporate activity

Energy funding and M&A across India

545 recorded equity rounds have gone to 6,577 energy companies in India — how much, at which stage, into which sub-sectors, from whom, and how Tamil Nadu compares. Debt, IPO and grant rounds are excluded.

equity rounds, last 12 months23

US$796.81m

equity rounds, last 24 months71

US$1.47bn

raised over five yearsUS$5.37bn

219 rounds in India

M&A deals, Tamil Nadu8

last 24 months

Capital by year

Equity funding into energy in India

amount rounds
$998m201829
$1.3bn201919
$443m202016
$668m202130
$1.3bn202234
$1.1bn202338
$984m202463
$900m202540
$406m202614

Bars show US$ raised; the number under each year is equity rounds. 2026 is year to date. The peak year was 2022, with US$1.31bn across 34 rounds.

The funding ladder · five years

Rounds and typical cheque by stage

AngelUS$102.98m26 rounds · median US$326k
SeedUS$142.06m82 rounds · median US$407k
Series AUS$430.28m42 rounds · median US$4.54m
Series BUS$717.57m25 rounds · median US$13.32m
Series CUS$601.70m16 rounds · median US$35.61m
Series D+US$2.17bn20 rounds · median US$58.75m
Private equityUS$1.20bn8 rounds · median US$100.00m
Where the money went · five years

Most-funded sub-sectors

Solar energyUS$3.38bn122 rounds · 64 companies
Wind energyUS$771.24m11 rounds · 4 companies
Renewable energy techUS$661.80m5 rounds · 3 companies
Electricity transmission & distribution equipmentUS$125.84m4 rounds · 4 companies
Diversified consumer electronics brandsUS$62.00m1 rounds · 1 companies
Hydro powerUS$57.58m2 rounds · 2 companies
Alternative lendingUS$54.61m4 rounds · 1 companies
Corporate activity · last 24 months

M&A in Tamil Nadu

6Acquisition
2Merger

Most active acquirers

  1. Dalmia Bharat Refractories1
  2. Refex Holding Private Limited1
  3. Varanium Capital Advisors1
  4. BofA Securities Europe SA1
  5. Refex industries1

Most acquired or merged

  1. Dalmia1
  2. Refex industries1
  3. Supreme Power Equipment1
  4. Chennai petroleum corporation1
  5. Refex Green Mobility Limited1

Each deal appears in the events strip at the top of the page.

Go deeper in the energy landscape reports:

Energy Industry Landscape of India

Energy funding in Tamil Nadu

14 energy companies in Tamil Nadu have recorded equity funding, US$231.22m in total. Totals and round dates describe the historical record; they are not current valuations.

Founders and momentum in Tamil Nadu

Meet the people behind energy companies in Tamil Nadu. 132 of 545 companies list founders or leaders; where a public LinkedIn profile matches exactly, the expanded profile shows the photo, headline, location and education.

Explore Tamil Nadu energy companies by sub-sector

The most common specialisations among energy companies in Tamil Nadu. Open a company to see what it sells, who runs it and how far it has come.

Keep exploring energy in India and nearby markets.

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