Best Energy Tech Companies in Oakland, United States
The 34 best Energy Tech companies in Oakland, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Mosaic.
Our analysis of 79 Energy Tech companies
$38.9b in tracked funding; 92% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy Tech companies in Oakland
| # | Company | Disclosed funding | Last round | Stage | Employees | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Mosaic Residential solar financing provider | $250M | 119 mo ago | Series C | 179 | Billy Parish Co-Founder & Executive Chair | WordPressApple iCloud MailMySQL+28 | 394 patents Fertilizer and potash production technologies, including ammonia synthesis and mining equipment. | — |
| 2 | Renew Financial Online platform for renewable energy financing | $125M | 35 mo ago | Series D | 356 356 → 199 (-44%) | Mark Floyd Chief Executive Officer | WordPressApple iCloud MailMySQL+25 | — | — |
| 3 | Axiom Cloud AI AI & SaaS-driven refrigeration management solution for facility managers | $28M | 31 mo ago | Series A | 20 20 → 18 (-10%) | Nikhil Saralkar Co-Founder & CTO | — | 8 patents Smart refrigeration monitoring, leak detection, and building energy management systems | — |
| 4 | Molten Industries Innovating graphite and hydrogen production for batteries and heavy industry 29Funding top 28%Talent top 28%Patents top 44%Moat bottom 49% All 8 signals ▾Fundingtop 28% Talenttop 28% Patentstop 44% Moatbottom 49% Innovationbottom 48% Techbottom 43% Globalbottom 37% Marketbottom 20% Funding: Raised $25.0M across 4 rounds · 4 rounds over 4 yrs (1.0/yr) Talent: 4 named leaders on record · 4 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 29/100 | $25M | 18 mo ago | Series A | 6 | Kevin B Co-Founder and CEO | WebflowLeverjQuery+9 | 7 patents Patents concentrated in chemistry & materials | — |
| 5 | Lucid Management platform for connected buildings | $24M | 139 mo ago | Acquired | 1,906 | Vladi Shunturov Co-Founder & CEO | — | 113 patents Handheld confocal microscopy for tissue imaging and synthetic image generation for AI. | — |
| 6 | Vigilent IoT &AI-driven energy managment solution for facility managers | $20M | 112 mo ago | Series B | 25 | Clifford Federspiel President and CTO | — | 76 patents AI-driven HVAC control and optimization for pathogen mitigation in building environments | — |
| 7 | Presto Provider of fast and easy EV charging solutions | $15M | 20 mo ago | Seed | — | J Raynor Co-Founder | WebflowLeafletMapbox.js+18 | 11 patents Secure handheld messaging devices and stylized print formatting via centralized control | — |
| 8 | UtilityAPI Provider of access to energy usage data | $11M | 53 mo ago | Series A | 17 17 → 20 (+18%) | — | WordPress Block EditorWordPressMySQL+13 | — | — |
| 9 | Avalon Battery Vanadium flow batteries for safe, long-life, and economical energy storage | $10M | 110 mo ago | Series A | 3 | — | — | — | — |
| 10 | Standard Microgrid Distributed energy generation | $8M | 65 mo ago | Funding Raised | 25 | — | — | — | — |
| 11 | MACH Energy Provider of cloud-based building energy management solution for residential and commercial spaces | $2M | 200 mo ago | Acquired | 3 | — | — | — | — |
| 12 | RadianGEN Provider of solar asset management services and solutions | $1M | 125 mo ago | Acquired | 93 | Joe Kastner CEO and Founder | WordPressMySQLPHP+22 | — | — |
| 13 | CodeCycle SaaS-driven software platform for energy efficiency project development | $600K | 93 mo ago | Funding Raised | — | Tom Garcia P E Founder | — | 4 patents Software tools for automating building energy efficiency regulation compliance and enforcement | — |
| 14 | Nanogrid Provider of energy intelligence solutions for residential customers | $150K | 87 mo ago | Acquired | — | Patrick Sheehan Co-Founder & CEO | — | — | — |
Top 12 Energy Tech companies in Oakland
#1
Series A · Oakland, California · founded 2021 · 6 employees$25Mraised▾
Innovating graphite and hydrogen production for batteries and heavy industry. The company advances materials, chemicals, and fuels through innovative technology. They split natural gas into hydrogen and graphite using electrical resistive heating, offering a solution for lithium-ion batteries and heavy industry. Their US-made graphite directly integrates into the battery anode supply chain, reducing environmental impact and cost. The hydrogen production technology delivers hydrogen at cost parity, using less energy than traditional methods. This unlocks potential for industries like steel, heavy transportation, and power generation, enabling shifts towards sustainable practices. They are focused on innovation and sustainability in the energy and industrial sectors.
- Apr 2025Grant (prize money)$5.4M
- Jun 2024Series A$25M
- Apr 2023Grant (prize money)$256K
- Oct 2022Seed—
#2
Seed · Oakland, California · founded 2023$15Mraised▾
Provider of fast and easy EV charging solutions. The platform offers solutions that includes station management solutions, app for users, fleet charging solutions, and more.
- Feb 2025Seed$15M
- 2023Seed—
#3
Series D · Oakland, California · founded 2008 · 356 employees$124.5Mraised▾
Renewfinancial offers an online platform for renewable energy financing. It offers loans to individuals & businesses for solar energy panels, windows & doors, heating & cooling, roofing & roof replacement, landscaping & turf, and more. It also provides loans to governments for energy & water conservation projects.
- Oct 2023Conventional Debt$245M
- Aug 2017Conventional Debt$300M
- Oct 2016Conventional Debt$200M
- Feb 2016Series D$78.3M
#4
Series A · Oakland, California · founded 2014 · 20 employees$27.9Mraised▾
AI & SaaS-driven refrigeration management solution for facility managers. The platform provides the solution to connect existing infrastructure using an on-site cellular gateway. Its platform creates a digital twin of the existing refrigeration system and optimizes the refrigeration system.
- Feb 2024Series A$5M
- Jan 2023Series A$7.4M
- Oct 2022Series A$11.9M
- Nov 2021Seed$2.5M
#5
Series C · Oakland, California · founded 2011 · 179 employees$250.5Mraised▾
Mosaic is a US based company focused on providing financing for residential solar. The company provides financing to homeowners to setup rooftop solar at their houses. The company started off as a crowdfunding platform to investment in solar projects.
- Nov 2016Conventional Debt$250M
- Aug 2016Conventional Debt$19.2M
- Aug 2016Series C$220M
- Apr 2016Conventional Debt$200M
#6
Series A · Oakland, California · founded 2014 · 17 employees$11Mraised▾
Provider of access to energy usage data. The software offers an automating process of authorizing and collecting electricity data and converts them into PDF and Excel formats. It also provides graphs to analyze the energy consumption pattern.
- May 2022Series A$11M
- Jul 2017Grant (prize money)$923.8K
- Nov 2015Grant (prize money)$762K
- Dec 2014Seed—
#7
Series B · Oakland, California · founded 2008 · 25 employees$20.2Mraised▾
IoT &AI-driven energy management solution for facility managers. The solutions are provided for commercial buildings, data centers, and more. The platform determines and maintains comfort levels in every area of a building and adjusts HVAC controls to minimize energy usage.
- Jun 2017Series B$6M
- Jun 2013Series A—
- Aug 2012Series A$2.4M
- Aug 2012Series A$4.3M
#8
Funding Raised · Oakland, California · founded 2012 · 25 employees$8.1Mraised▾
Standard Microgrid is a distributed energy services company providing distributed renewable generation and proprietary grid management hardware and software. Standard Microgrid’s first pilot is currently running on a rural test site in Mugurameno‚ Zambia. Their system draws energy from solar panels and takes an entire utility solution to rural users‚ typically in a small village. Instead of selling energy by kilowatt hours‚ Standard Microgrid uses a mathematical model to sell energy according to its use. There are different rates for lighting at night or to charge a phone during the day.
- May 2021Grant (prize money)$2.4M
- Apr 2021Grant (prize money)$5.7M
#9
Acquired · Oakland, California · founded 2004 · 1906 employees$24.1Mraised▾
Provider of a cloud based intelligence platform intended to improve building efficiency and drive energy conservation and savings. The company's platform helps owners, operators and occupants to gain powerful insights into the operations of their buildings, enabling clients to optimize the performance of their buildings and teams.
#10
Series A · Oakland, California · founded 2013 · 3 employees$10.3Mraised▾
Vanadium flow batteries for safe, long-life, and economical energy storage, providing an alternative to lithium-ion. They deliver modular, factory-built vanadium flow batteries, offering a proven and cost-effective energy storage solution. The company's technology is ideal for grid-scale service providers needing long-term flexibility and low long-term costs. Commercial and industrial customers use these batteries to reduce electricity costs, accelerate carbon reduction, and improve resilience. For off-grid locations, the batteries provide energy security by storing and time-shifting renewable energy, reducing fuel costs, and lowering carbon emissions. The batteries offer ultra-high throughput and unlimited cycling, maximizing ROI over the project life. The company designs and manufactures flow batteries, focusing on safety and performance. The company is a key player in the energy transition, offering a sustainable solution that is fully recyclable and does not contain rare earth or conflict materials.
- Aug 2017Series A$6M
- Jul 2014Series A$4.3M
#11
Acquired · Oakland, California · founded 2001 · 3 employees$2.1Mraised▾
Provider of cloud-based building energy management solution for residential and commercial spaces. It offers Insights - a cloud-based software platform that provides automated tenant billing, budget and variance reporting, enterprise management, and alerts service.
- Feb 2010Grant (prize money)$2.1M
#12
Acquired · Oakland, California · founded 2013 · 93 employees$1Mraised▾
RadianGEN is a provider of solar asset management services and solutions to commercial and utility-scale PV projects. Services offered are field services, operations, compliance and financial management. Field services include preventive, reactive and commissioning services. Operations services consist of monitoring, O&M oversight. and Analytics. Has also developed a proprietary cloud-based solar asset management platform called as LENS.
- May 2016Seed—
- Sep 2013Seed$1M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Energy Tech 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.