Best Energy Tech Companies in Fremont, United States
The 37 best Energy Tech companies in Fremont, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Solyndra.
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 Fremont
| # | Company | Disclosed funding | Last round | Employees | Founded | Founder | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Solyndra 🦄 Provider of solar panels, solar panel kits, and related components | $845M | 103 mo ago | 168 | 2005 | — | 156 patents Non‑planar cylindrical solar cell modules with integrated filler and volume‑compensation packaging | — |
| 2 | EnerVenue Manufacturer of metal-hydrogen batteries for grid-scale, commercial, and residential applications 72Growth top 15%News top 21%Funding top 23%Patents top 24% All 10 signals ▾Growthtop 15% Newstop 21% Fundingtop 23% Patentstop 24% Innovationtop 26% Moattop 26% Talentbottom 48% Marketbottom 47% Techbottom 42% Globalbottom 42% Growth: Fresh capital in last 24 mo News: 7 BI events in 12 mo (of 20 tracked, 5 types) · +600% YoY rank vs industry peers · Fliar Intelligence Index 72/100 | $445M | 5 mo ago | 225 | 2020 | Yi Cui Founder | 82 patents Metal‑hydrogen rechargeable batteries and associated hydrogen‑tight containment systems. | — |
| 3 | Bridgelux Manufacturer and developer of LED chips | $235M | 174 mo ago | 42 | 2002 | — | 1,084 patents Advanced phosphor-converted LED lighting with color mixing and scattering technologies | — |
| 4 | Enovix Battery cells developer for lithium-ion batteries 76Innovation top 14%Patents top 17%Growth top 25%Talent top 28% All 12 signals ▾Innovationtop 14% Patentstop 17% Growthtop 25% Talenttop 28% Newstop 29% Fundingtop 30% Moattop 33% Techtop 44% Markettop 47% Globalbottom 45% Fin. healthbottom 44% Partnersbottom 34% Innovation: 391 patents (top 13% of patent-holders) · 240 filings since 2022 vs 95 in 2017-21 Patents: 391 patents matched (strict assignee match) · 240 filings since 2022 vs 95 in 2017-21 rank vs industry peers · Fliar Intelligence Index 76/100 | $220M | 17 mo ago | 332 332 → 517 (+56%) | 2006 | Harrold Rust Founder & former CEO Enovix | 390 patents Advanced lithium‑ion battery electrode designs, interconnects, and safety/ion‑transport systems | — |
| 5 | Enphase Energy Manufacturer of micro-inverter and energy storage systems | $100M | 66 mo ago | 3,157 | 2006 | Badri Kothandaraman President and CEO | 1,099 patents Microinverter power electronics integrating solar PV, storage, and AI-driven energy management | — |
| 6 | GlassPoint Solar steam solutions for industry, reducing carbon emissions cost-effectively 27Funding top 27%Product top 35%Innovation top 45%Tech bottom 45% All 8 signals ▾Fundingtop 27% Producttop 35% Innovationtop 45% Techbottom 45% Globalbottom 39% Growthbottom 36% Marketbottom 27% Newsbottom 22% Funding: Raised $94.8M · 6 rounds over 16 yrs (0.4/yr) Product: 2 distinct product lines · Company stage: Series C rank vs industry peers · Fliar Intelligence Index 27/100 | $95M | 7 mo ago | 33 | 2008 | — | — | 3 job openings |
| 7 | Ionblox Developer of lithium-ion battery technology for automotive and aviation applications | $56M | 43 mo ago | 22 | 2017 | Michael Sinkula Co-Founder | 22 patents Patents concentrated in electrical & electronics | — |
| 8 | Amprius Technologies Developer of silicon nano-wire-based Li-Ion batteries | $55M | 47 mo ago | 64 64 → 101 (+58%) | 2009 | Yi Cui Co-Founder | 170 patents Silicon‑based high‑capacity anodes and nanostructured electrode architectures for lithium‑ion batteries. | — |
| 9 | Imergy Power Systems Vanadium Flow Battery manufacturer | $52M | 208 mo ago | 119 | 2004 | — | — | — |
| 10 | Silevo Solar photovoltaic (PV) cell technology innovator manufacturer | $47M | 203 mo ago | 38 | 2007 | Zheng Xu Co-Founder | 58 patents Advanced silicon photovoltaic cell manufacturing, heterojunction/bifacial modules, electroplated grids. | — |
| 11 | Intematix Provides phosphor-based technology solutions for lightning & display applications | $43M | 174 mo ago | 201 | 2000 | — | 1,060 patents Advanced tunable white LED lighting and semiconductor optocoupler technologies | — |
| 12 | Nextracker Provider of integrated utility-scale solar platform solutions from design to operations | $43M | 134 mo ago | 606 | 2013 | Marco Miller Co-Founder & COO | 781 patents Patents concentrated in electrical & electronics | — |
| 13 | Leyden Energy Manufactures Li-ion batteries and developed Li-imide | $41M | 163 mo ago | 46 | 2007 | Haris Basit Co-Founder | — | — |
| 14 | Oorja Protonics Provider of online toto gaming services | $30M | 143 mo ago | 18 | 2004 | Jim Boettcher CEO & President | 12 patents Methanol fuel cell stack assembly, concentration sensing, and high‑current flow‑field design | — |
| 15 | King Solarman Solar E-Commerce company | $10M | 175 mo ago | 13 | 2008 | Michael Cung CEO | — | — |
| 16 | eJoule Developer of advanced lithium-ion battery materials and manufacturing processes | $8M | 55 mo ago | — | 2013 | R Redi Co-Founder | 91 patents Solid-state battery material synthesis and jet-based manufacturing of cathodes and electrolytes | — |
| 17 | Grid-Scape Developer of scalable microgrid and EV fleet electrification systems | $1M | 11 mo ago | 40 | 2012 | — | — | — |
| 18 | Dhaani Systems Predictive analytics to improve energy efficiency of IT equipments | $879K | 165 mo ago | 7 | 2007 | Shankar Mukherjee CEO & President | — | — |
| 19 | Tanovus Online platform offering anode-based batteries | — | 42 mo ago | — | 2020 | Shucheng Chen Founder | — | — |
| 20 | JoulWatt Power Electronics and BMS solution developer | — | 68 mo ago | 752 | 2009 | — | — | — |
| 21 | Boson Motors Manufacturer of smart electric commercial vehicles | — | 72 mo ago | 98 | 2017 | Arun Seelam Co-Founder & CEO | — | — |
Top 12 Energy Tech companies in Fremont
#1
Series B · Fremont, California · founded 2020 · 225 employees$445.1Mraised▾
Manufacturer of metal-hydrogen batteries for grid-scale, commercial, and residential applications. The company's technology is suited for energy storage solutions. The batteries have longevity, temperature tolerance, and low maintenance requirements. The company focuses on accelerating clean energy through its products.
- Mar 2026Series B$300M
- Oct 2023Series B$308.1M
- Sep 2021Series A$125M
- Aug 2020Seed$12M
#2
Series C · Fremont, California · founded 2008 · 33 employees$94.8Mraised▾
Solar steam solutions for industry, reducing carbon emissions cost-effectively. The company delivers solar industrial process steam using enclosed trough technology, designed for industrial users in remote and harsh environments. They offer long-term steam supply agreements, reducing the financial impact of decarbonization and hedging against volatile fuel prices. Their technology allows for emission-free steam production, day and night, using molten salt storage. The company focuses on easy integration with existing facilities, minimizing disruptions and costs. They provide a pathway to decarbonization, reducing emissions and enabling future electrification. This is a B2B clean energy tech company with a social impact business model.
#3
Public · Fremont, California · founded 2006 · 332 employees$220Mraised▾
Battery cells developer for lithium-ion batteries. It provides a 3D silicon lithium-ion battery platform to improve mobile product performance. It covers multiple aspects of silicon anode and 3D lithium-ion battery design and production.
- Mar 2025Grant (prize money)$2.8M
- Sep 2020Series F$20M
- Apr 2020Series F$45M
- Dec 2018Series E$22.2M
#4
Funding Raised · Fremont, California · founded 2012 · 40 employees$1.1Mraised▾
Developer of scalable microgrid and EV fleet electrification systems. These systems integrate renewable energy sources, energy storage, and intelligent software for efficient energy management and grid resilience. The company designs and manufactures its hardware, ensuring seamless integration and optimal performance. Software solutions utilize AI and machine learning for energy forecasting and optimization, maximizing renewable energy utilization and minimizing reliance on the traditional grid. The offered solutions are adaptable to various applications, including community colleges, municipal facilities, and commercial businesses.
- Oct 2025Grant (prize money)$1.1M
#5
Solyndra 🦄Series E · Fremont, California · founded 2005 · 168 employees$845.2Mraised▾
Provider of solar panels, solar panel kits, and related components. It offers off-grid and grid-tied solar systems, along with components like battery banks, chargers, generators, and charge controllers. The company provides options for building independent power systems and systems integrated with the electrical grid. It also offers technical support and facilitates financial solutions for transitioning to solar energy. The company operates an online store and seeks collaborative opportunities.
- Jan 2018Series E$147.2K
- Mar 2011Conventional Debt$186.6M
- Jan 2011Conventional Debt$75M
- Jun 2010Conventional Debt$70M
#6
Public · Fremont, California · founded 2009 · 64 employees$55Mraised▾
Developer of silicon nano-wire-based Li-Ion batteries. It provides users with a company manufacturing tool uses a multi-step, chemical vapor deposition process to produce silicon nanowire anodes. The batteries offers higher energies per unit volume, depending on cell capacity and form factor and energies per unit weight.
- Oct 2022Grant (prize money)$50M
- Nov 2019Series C—
- Jan 2014Series C$30M
- Sep 2011Grant (prize money)$6.6M
#7
Series B · Fremont, California · founded 2017 · 22 employees$56Mraised▾
Developer of lithium-ion battery technology for automotive and aviation applications. The company focuses on extreme fast charging, extended range, and long-life battery solutions. It utilizes silicon monoxide to enhance battery performance. The company produces large format pouch cells using commercially scalable materials and equipment. The cell technology platform has undergone testing and validation.
- Feb 2023Series B$32M
- Oct 2022Series B$24M
#8
Public · Fremont, California · founded 2006 · 3157 employees$100.1Mraised▾
Manufacturer of micro-inverter and energy storage systems. It offers a solar monitoring tool which allows customers to monitor the solar energy production and consumption. Its products include microinverters, batteries, accessories, and more.
- Feb 2021Post IPO$1.1B
- Sep 2020Grant (prize money)$282K
- Jan 2017Post IPO$10M
- Dec 2016Post IPO$17M
#9
Acquired · Fremont, California · founded 2002 · 42 employees$235.5Mraised▾
Bridgelux is a manufacturer and developer of LED chips. Products offered include SMD lights, components for automotive application lights and chips for decorative lights, strip lights, and COB LED arrays, along with additional lighting components for developers and manufacturers of smart lighting products. It supports its clients with application-specific solutions and the components are used in the making of both indoor and outdoor luminaires.
- Mar 2012Series E$40.9M
- Oct 2011Series E$15M
- Jan 2011Series E$60.5M
- Mar 2010Series D$34.3M
#10
Acquired · Fremont, California · founded 2000 · 201 employees$43.4Mraised▾
Provides phosphor-based technology solutions for lightning & display applications. It is engaged in developing, manufacturing, marketing, and selling nano, bulk, and thin film materials to light and imaging markets. The company offers phosphors materials for LED, CCFL, CFL, and security/detection applications; lighting solutions; and energy storage/clean energy materials technologies, including fuel cell and battery materials. It also provides chips and silicones in the greater China market. Total 470 patents awarded or filed worldwide.
- Mar 2012Series D$16.2M
- Oct 2009Series C$4M
- Jul 2008Series C$5.3M
- Apr 2008Series C$413.9K
#11
Acquired · Fremont, California · founded 2007 · 38 employees$47.1Mraised▾
Silevo solar manufactures a patented form of solar cells that is based on tunneling junction architecture that couples tunneling oxide layers used in the semiconductor industry with more traditional thin film passivation layers, enabling a device with extremely low interface trap densities. This translates into higher efficiency products with lower space coverage and lower temperature coefficient loss.
- Sep 2009Grant (prize money)$2.4M
- Aug 2009Grant (prize money)$2.4M
- Jun 2009Grant (prize money)$3M
- Feb 2009Series B$40M
#12
Series C · Fremont, California · founded 2007 · 46 employees$41Mraised▾
Leyden Energy formerly Mobius Power is a manufacturer of advanced lithium-ion batteries for the consumer electronics, energy storage and electric vehicle markets. The company's patented and proprietary cell technology offers improved energy density, superior product life and optimal safety, even in high-temperature environments. Leyden also developed the technology of Li-imide batteries.
- Jan 2013Series C$10M
- Aug 2011Series B$20M
- Oct 2010Series A$6.5M
- Aug 2010Grant (prize money)$1.7M
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
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.