Best Energy Companies in Sacramento, United States
The 31 best Energy companies in Sacramento, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Greenleaf Power.
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 Sacramento
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Greenleaf Power Energy generation from biomass | $100M | 149 mo ago | Late Stage | — | 2010 | WordPressMySQLPHP+10 | — | — |
| 2 | Pacific Ethanol Producer of bio fuels | $43M | 178 mo ago | Acquired | Bill Jones Co-Founder & Chairman | 2003 | — | — | — |
| 3 | Propel Biofuel retail fuel stations | $34M | 167 mo ago | Series D | Rob Elam Founder | 2004 | Apple iCloud MailGoogle WorkspaceSalesforce+15 | 28 patents Wearable textile bioelectronic sensors with conductive hybrid yarns and moisture‑managed electrodes | — |
| 4 | Sierra Energy Provider of waste-to-energy solution | $33M | 87 mo ago | Series A | Mike Hart Founder & CEO | 2004 | WordPressMySQLPHP+25 | — | — |
| 5 | Kepler Energy Systems Provider of global renewable energy solutions | $150K | 54 mo ago | Funding Raised | Greg Treseder Chief Executive Officer | 2019 | — | — | — |
| 6 | Universe Energy Manufacturer of batteries | — | 64 mo ago | Seed | Wiebe Janssen Co-Founder | 2021 | — | — | — |
| 7 | Hunt and Sons Petroleum product distribution company | — | 66 mo ago | Funding Raised | Josh Hunt CEO & President | 1946 | WordPressMySQLPHP+24 | — | — |
| 8 | A1 Solar Solutions Solar solutions provider offering sustainable energy for a brighter future | — | — | Acquired | Eric Klinger CEO & President | 2016 | — | 175 patents Patents concentrated in chemistry & materials | — |
Top 7 Energy companies in Sacramento
#1
Funding Raised · Sacramento, California · founded 2019$150Kraised▾
Provider of global renewable energy solutions
- May 2022Grant (prize money)$150K
#2
Series D · Sacramento, California · founded 2004 · 18 employees$33.6Mraised▾
Propel owns and operates a network of filling stations in California and Washington. It offers renewable fuels, low-carbon fuels, and mobility solutions. The company also provides CleanDrive, an integrated carbon emission reduction tracking platform to enable drivers to offset their emissions at the pump through carbon offset programs. In addition, the company provides renewable fuels in bulk supply for commercial customers. Propel is a fast growing company, ranked among 2015’s top 10 private companies in Silicon Valley, and recognized by Inc. Magazine’s “Inc. 500”.
- Dec 2012Series D$11M
- Oct 2012Conventional Debt$10M
- Jun 2012Grant (prize money)$10M
- Sep 2011Conventional Debt$3.5M
#3
Series A · Sacramento, California · founded 2004 · 57 employees$33Mraised▾
Provider of waste-to-energy solution
- Jul 2019Series A$33M
- Oct 2015Grant (prize money)$100K
#4
Late Stage · Sacramento, California · founded 2010 · 51 employees$100Mraised▾
Greenleaf Power collects residual biomass material from agricultural, construction, demolition, landfill, and timber industries and converts that biomass into energy for sale to municipal, public power, and utilities. It has five operating facilities with a combined generation capacity of more than 154 MW. Ita started to acquire biomass plants into its portfolio from initial year with a view of expansion
- Jun 2014PE$100M
#5
Acquired · Sacramento, California · founded 2003 · 741 employees$43Mraised▾
Producer of bio fuels
- Dec 2011Series C$8M
- Oct 2010Series C$35M
#6
Seed · Sacramento, California · founded 2021 · 4 employees—raised▾
Developer of a battery recycling technology designed to make batteries eternal. The company's technology unlocks battery recycling to the order of magnitude needed for a true energy revolution and aims to operate a network of automated recycling plants to recycle batteries all around the world, enabling clients to get recycled electric vehicle batteries and accelerate the clean energy revolution.
- 2021Seed—
#7
Funding Raised · Sacramento, California · founded 1946 · 368 employees—raised▾
Hunt & Sons is a petroleum product distribution company that provides commercial fleet fueling, bulk fuel supply, and lubricant solutions for industrial, commercial, agricultural and automotive purposes. Provides distribution of various products such as gasoline, diesel fuel, biodiesel, gasoline, E85, kerosene, jet fuel, and Chevron, Valvoline and Phillips 66 lubricant products. Operates 13 office and warehouse facilities and 38 commercial card lock fueling sites.
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.