Best Energy Companies in Seattle, United States
The 42 best Energy companies in Seattle, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Imperium Renewables.
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 Seattle
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Imperium Renewables Manufactures unblended biodiesel | $113M | 143 mo ago | Acquired | Randy Howard CEO | 2004 | — | — | — |
| 2 | USNC Manufacturer of micro modular reactors | $47M | 24 mo ago | Series B | Francesco Venneri CEO | 2011 | GhostNode.jsVimeo+17 | — | — |
| 3 | Targeted Growth Crop manufacturing company | $41M | 156 mo ago | Deadpooled | Jim Roberts Founder | 1998 | — | 108 patents Genetically engineered plant cell-cycle regulators for enhanced crop growth and yield | — |
| 4 | AltaRock Energy Developer of enhanced geothermal systems for clean energy production | $26M | 100 mo ago | Series B | — | 2007 | — | 62 patents Geothermal well stimulation and high-temperature pump cooling technologies. | — |
| 5 | OneEnergy Renewables Develops solar projects | $16M | 88 mo ago | Series B | — | 2009 | RubyUbuntuZURB Foundation+16 | — | 1 partnership |
| 6 | Evergreen Developer of solar energy projects | $6M | 41 mo ago | Seed | Cris Eugster CEO and Co-founder | 2021 | — | 15 patents Precision agriculture disease forecasting and UV-based crop sterilization systems | — |
| 7 | General Biodiesel Manufactures biodiesel from used cooking oil | $2M | 182 mo ago | Seed | Yale Wong Founder & Chairman | 2006 | — | — | — |
| 8 | Teichos Energy Develops large-scale solar energy projects, providing sustainable energy solutions | $2M | 62 mo ago | Seed | — | 2012 | — | — | — |
| 9 | Tuusso Energy Utility-scale solar plant developer minimizing risk and maximizing clean energy competitiveness | $2M | 192 mo ago | Series A | — | 2008 | — | — | — |
| 10 | Micro Energy Credits Empowering communities with clean energy through carbon finance and microloans | $1M | 140 mo ago | Seed | James Dailey Co-Founder & Director | 2007 | WordPressMySQLRedis+24 | — | — |
| 11 | Astrolabe Analytics Provides cloud computing and machine learning focused software for battery companies | $250K | 74 mo ago | Funding Raised | Robert Masse CEO | 2018 | — | — | — |
| 12 | CTFusion Online gambling blog providing insights and reviews of slot games | $148K | 97 mo ago | Deadpooled | Derek Sutherland Co-Founder & CEO | 2015 | — | — | — |
Top 12 Energy companies in Seattle
#1
Series B · Seattle, Washington · founded 2011 · 50 employees$47.4Mraised▾
Manufacturer of micro modular reactors. They also manufacture their own advanced fuel
- Aug 2024Grant (prize money)$385.1K
- May 2023Grant (prize money)$174.9K
- Jun 2022Grant (prize money)$199.4K
- Jan 2022Series B$30M
#2
Seed · Seattle, Washington · founded 2021 · 9 employees$6.1Mraised▾
Developer of solar energy projects
- Mar 2023Seed$6.1M
#3
Acquired · Seattle, Washington · founded 2004 · 63 employees$113Mraised▾
Manufactures unblended biodiesel
- Sep 2014Grant (prize money)$380.4K
- Sep 2011Grant (prize money)$1.7M
- Dec 2009Grant (prize money)$333.7K
- Feb 2007Venture Debt$101M
#4
Series B · Seattle, Washington · founded 2009 · 36 employees$15.9Mraised▾
Develops solar projects
- Apr 2019Conventional Debt$200K
- Jul 2017Series B$3.6M
- Apr 2017Series B$4.7M
- Mar 2017Conventional Debt$2M
#5
Deadpooled · Seattle, Washington · founded 1998 · 18 employees$40.6Mraised▾
Operator of an agricultural biotechnology company intended to focus on developing products to increase the fertility of crops. The company's crop biotechnology increases the yields in multiple crops and it focuses on crops such as corn, soy, and canola that produce the raw material, enabling farmers to use them for the production of renewable fuels such as ethanol and biodiesel.
#6
Series B · Seattle, Washington · founded 2007 · 24 employees$26.3Mraised▾
Developer of enhanced geothermal systems for clean energy production. It focuses on superhot rock geothermal energy extraction, developing advanced drilling, well completion, and reservoir development technologies. This involves creating new materials and methods for high-temperature environments and optimizing wellfield systems for long-term, sustainable energy generation. The company also works on system integration to ensure the efficient and cost-effective deployment of these technologies. Research and development efforts include collaborations with national laboratories and universities to advance drilling techniques and improve energy conversion methods.
#7
Seed · Seattle, Washington · founded 2012$2.4Mraised▾
Develops large-scale solar energy projects, providing sustainable energy solutions. The company focuses on developing utility-scale photovoltaic solar generation projects, offering renewable energy resources to public and private institutions. They work with landowners to develop clean, sustainable, and eco-friendly energy projects, providing cost-effective and resilient energy solutions. Their strategy involves long-term fixed-price energy contracts and associated renewable energy attributes. The team's expertise allows for low-cost analysis, efficient engineering design, and value-optimized project financing, offering low-cost clean energy. They contribute to sustainability goals, providing clean energy and strategic energy management.
- Jun 2021Seed$2.4M
#8
Seed · Seattle, Washington · founded 2006 · 12 employees$2.4Mraised▾
General Biodiesel recycles used cooking oil and producing biodiesel locally, and selling to local fleets. Their products meet with ASTM standards and by products glycerin will also be sold in the manufacturing of soaps, pharmaceuticals, food, and other industrial applications.
- Jun 2011Seed$100K
- Nov 2010Seed$1.3M
- Jun 2009Seed$1M
#9
Series A · Seattle, Washington · founded 2008 · 5 employees$2Mraised▾
Utility-scale solar plant developer minimizing risk and maximizing clean energy competitiveness. The company focuses on developing cost-effective utility-scale solar plants. They achieve this through careful site selection, collaboration with communities, and avoidance of environmental impacts. They develop in areas where solar generation is competitive and major infrastructure upgrades are not required. The company partners with utilities and municipalities to develop solar projects that meet sustainability goals. They offer various contracting options to corporate customers, helping them meet sustainability targets and manage energy costs. The company emphasizes quality over quantity, striving to develop the most competitive projects with a high success rate. Their approach includes hands-on management, optimized system design, and the use of proven technologies to deliver reliable clean electricity.
- Aug 2010Series A$2M
#10
Seed · Seattle, Washington · founded 2007 · 35 employees$1.4Mraised▾
Empowering communities with clean energy through carbon finance and microloans. The organization partners with microfinance institutions to provide access to affordable clean energy solutions, such as solar lighting and efficient stoves. It focuses on empowering women microentrepreneurs in developing countries, enabling them to transition to clean energy and improve their livelihoods. By providing funding and technical support, the organization facilitates the adoption of clean energy technologies, reducing deforestation and carbon emissions. It generates social impact carbon credits for corporations and sovereigns committed to climate action. The organization utilizes cloud-based technology for carbon monitoring and ensures verifiable climate impact through customer satisfaction tracking. It supports local economies by promoting sustainable clean energy markets and creating green jobs. The business model involves financial inclusion, social impact investing, and carbon finance, creating a positive impact on both poverty and climate change.
- Dec 2014Seed$1.3M
- Jan 2011Seed—
- Dec 2010Seed$125K
#11
Funding Raised · Seattle, Washington · founded 2018 · 3 employees$250Kraised▾
Developer of an analytics tool designed for partners across the battery value chain, from materials developers to systems integrators. The company offers solutions for battery data management and predictive analytics in fields such as automotive and electric vehicles, aerospace, grid storage, and much more, enabling clients to boost business outcomes, accelerate time-to-market, and drive better decision-making with customized solutions and insights.
- Jun 2020Grant (prize money)$250K
#12
Deadpooled · Seattle, Washington · founded 2015 · 3 employees$148.5Kraised▾
Online gambling blog providing insights and reviews of slot games. This platform delivers up-to-date information on various online slot games, including game reviews, tips, and strategies. It covers different slot providers, such as Yggdrasil, and explores game mechanics like GigaBlox. The blog also discusses topics like server options, deposit methods, and bonus features, aiming to enhance the user experience in online gambling. It serves as a resource for players seeking information on slot games, including demo versions and server options, focusing on providing relevant content for the online gambling community. The blog also touches upon aspects like account creation and potential advantages of using foreign servers.
- Jul 2018Grant (prize money)$148.5K
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 Grid Energy Storage is moving in the United States
A read on the academic research around Grid Energy Storage — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 5,941 United States-affiliated papers.
- Electric Power Research Institute204
- Pacific Northwest National Laboratory202
- Argonne National Laboratory193
- Northeastern University151
- Massachusetts Institute of Technology124
- Battery (electricity)57→359
- Electrolyte37→318
- Electrochemistry30→240
- Cathode32→224
- Anode37→209
- Renewable energy40→492
- Battery (electricity)59→507
- Power (physics)8→227
- Electrolyte27→244
- Electrochemistry37→240
- Battery (electricity)35→184
- Renewable energy24→156
- Electrolyte13→114
- Electrochemistry10→80
- Cathode9→72
Where energy storage is researched across United States
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Who's filing energy storage patents in the United States
United States energy storage patent filing is accelerating — 8,522 filings from 3,681 assignees (2016–2025), led by General Electric, ESS Technology, GM Global TECH Operations; annual filings 687→1058.
- General Electric592
- ESS Technology276
- GM Global TECH Operations233
- Fastcap Systems205
- UNIV California180
- Rondo Energy157
- United Technologies154
- Battelle Memorial Institute146
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.