Best Energy Companies in Chicago, United States
The 80 best Energy companies in Chicago, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Invenergy.
Our analysis of 171 Energy companies
$71.4b in tracked funding; 82% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy companies in Chicago
| # | Company | Last round | Disclosed funding | Employees | Founded | Founder | Web popularity | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | affordable community energy services company Affordable Community Energy Services Company provides energy efficiency services. | — | — | 3 | 2012 | — | — | — | — |
| 2 | Aka Electric Aka Electric Inc is a construction company based out of 4848 N Hamlin Ave # 1, Chicago, Illinois, United… | — | — | 29 | — | — | — | — | — |
| 3 | American Renewable Energy Solar project developer | — | — | — | 2003 | David Dwyer Owner | — | — | — |
| 4 | Amoco Provider of oil & natural gas refining and production services | — | — | 43,450 | 1889 | Bob Dudley CEO | — | 63 patents Specialty polymer synthesis, polyolefin oligomerization, and catalytic distillation processes | — |
| 5 | ampcng ampCNG is engaged in the transition to compressed natural gas (CNG) as a transportation fuel in the… | — | — | 60 | 2010 | — | — | — | — |
| 6 | Ayalytical Provider of analytical instruments and testing equipment | — | — | 37 | 2010 | — | Top 5M | — | — |
| 7 | Basic Wire and Cable Manufacturer of specialty wires, and cables | — | — | — | 1954 | — | Top 50M | — | — |
| 8 | C&I Power Solutions Provider of critical power system solutions for commercial and industrial clients. | — | — | — | 2017 | — | — | 256 patents Patents concentrated in electrical & electronics | — |
Top 12 Energy companies in Chicago
#1
Acquired · Chicago, Illinois · founded 2000 · 1276 employees$575Mraised▾
Developer and operator of sustainable energy solutions
- Jan 2025Series D—
- Aug 2023Conventional Debt$1.5B
- Jun 2023Series D—
- Jan 2022Series D—
#2
Acquired · Chicago, Illinois · founded 2011 · 16 employees$156.8Mraised▾
Developer of renewable natural gas (RNG) from dairy farm waste. This company develops and operates on-farm dairy RNG projects, sources and markets RNG to large fleet customers, and partners with dairy farmers to increase ultra-low carbon intensity gas production. The company received certification for its dairy waste-to-vehicle fuel pathway and achieved a low carbon intensity score. Its business model focuses on converting agricultural waste into a sustainable transportation fuel.
- Feb 2025Grant (prize money)$53.9K
- Jul 2019Series B$75M
- Aug 2017Series B$47M
- Jul 2014Series A$32M
#3
Seed · Chicago, Illinois · founded 2005 · 47 employees$1.9Mraised▾
Provider of biofuel technology and energy consulting services
- Mar 2025Seed$1.9M
- Mar 2025Conventional Debt—
#4
Series D · Chicago, Illinois · founded 2004 · 35 employees$562Mraised▾
Provider of online gambling and gaming services. It offers a variety of games including casino games, fish shooting games, cockfighting, lottery, and esports betting. The platform features advanced security measures and a user-friendly interface. It aims to provide a secure, fair, and transparent gaming experience for its users. The company holds a license from PAGCOR, a Philippine gaming regulator.
- Feb 2012Series D$420M
- Nov 2009Series C$5M
- Sep 2007Series C$100M
- May 2006Series B$30M
#5
Series A · Chicago, Illinois · founded 2008$10Mraised▾
It is a distributed solar and storage project developer that focuses on strengthening communities, the grid, and climate stability. They develop distributed energy resources and are committed to clean energy infrastructure in emerging community solar markets.
- Oct 2023Series A$10M
#6
Funding Raised · Chicago, Illinois · founded 2010$50Mraised▾
Producer of biofuels
- May 2021Conventional Debt$50M
#7
Series A · Chicago, Illinois · founded 2017$3.5Mraised▾
Supplier of electricity
- Jun 2023Series A$3.5M
#8
Public · Chicago, Illinois · founded 2000 · 466 employees$20.3Mraised▾
Provider of energy services with an electric and natural gas distribution. The company is one of the largest operators of nuclear power plants in the United States. It was created in October 2000 by the merger of PECO Energy Company and Unicom, of Philadelphia and Chicago respectively. Producing 521-MW utility-scale & distributed solar power and claims to be the 4th largest solar power producer globally. The company has operations and business activities in 47 states, the District of Columbia, and Canada. The company merged with Constellation Energy Group in March 2012. In 2022, the company recorded annual revenues of $19.07B and a net profit of $2.17B.
- Apr 2019Post IPO$2M
- Jul 2012Grant (prize money)$18.3M
#9
Acquired · Chicago, Illinois · founded 2009 · 18 employees$14Mraised▾
Leading American renewable energy company developing and operating wind, solar, and storage projects. They develop, construct, and operate renewable projects, delivering reliable, sustainable, domestic energy across the United States. They are committed to building and shaping America’s clean energy industry, creating jobs, boosting economies, partnering with local communities, and conserving nature. Their approach includes workforce development, local community partnerships, and biodiversity conservation. They offer offshore wind, onshore wind, solar and storage, and power-to-X solutions. They are focused on a green transformation, moving from fossil fuels to renewables, and aim to achieve net-zero emissions across their entire value chain. They are a global clean energy leader, developing, constructing, and operating offshore and land-based wind farms, solar farms, energy storage facilities, and bioenergy plants.
- Jan 2018Conventional Debt—
- Apr 2011Venture Debt$41M
- Jan 2011Series A$14M
#10
Deadpooled · Chicago, Illinois · founded 2001$10.9Mraised▾
PowerOne, an energy consulting firm, operating as a licensed power marketer to connect the customers with utility suppliers. Services offered to residential and commercial consumers include comparing the best available plans & suppliers, protecting consumers against rate increases.
- Aug 2017Series A$10M
- Jul 2013Seed$20K
- May 2013Seed$881.8K
#11
Funding Raised · Chicago, Illinois · founded 2017 · 22 employees$1.8Mraised▾
Solar‑development company that focuses on building community‑scale and utility‑scale solar projects. It collaborates with landowners, local communities, and organizations. Its services include site identification, permitting, community outreach, project financing, and managing construction through to energization.
- Jul 2017Conventional Debt$1.8M
#12
Unfunded · Chicago, Illinois · founded 2014$2Mraised▾
Haland Energy Partners is a private exploration and development company drilling wells in South Louisiana. Haland’s exploration wells are in the Wilcox trend and Miocene sands of South Louisiana.Then company participates in drill ready prospects; 3D surveys; prospect acreage leasing; and non-operated working interests in South Louisiana.
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Energy coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Energy Storage in Chicago is moving
A read on the academic research around Energy Storage in Chicago — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 58 papers.
- University of Chicago44
- University of Illinois Chicago18
- Electrochemistry1→9
- Cathode1→3
- Electrolyte13
- Battery (electricity)12
- Electrochemistry10
- Nanotechnology5
- Anode4
- Electrolyte4
- Cathode4
- Anode4
- Battery (electricity)3
- Electrochemistry3
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.