Best Energy Tech Companies in Santa Clara, United States
The 35 best Energy Tech companies in Santa Clara, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: MiaSole.
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 Santa Clara
| # | Company | Disclosed funding | Last round | Employees | Founder | Stage | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | MiaSole CIGS PV module manufacturer | $500M | 174 mo ago | 363 | — | Acquired | WordPressMySQLPHP+13 | 229 patents Thin-film photovoltaic cells, module interconnects, and integrated mounting/packaging solutions | — |
| 2 | Natron Energy Manufacturer of sodium-ion batteries for commercial and industrial power applications 69Innovation top 25%Patents top 26%Moat top 26%Funding top 31% All 10 signals ▾Innovationtop 25% Patentstop 26% Moattop 26% Fundingtop 31% Growthtop 32% Talenttop 38% Techtop 43% Marketbottom 45% Globalbottom 42% Newsbottom 37% Innovation: 110 patents (top 36% of patent-holders) · 80 filings since 2022 vs 30 in 2017-21 Patents: 110 patents matched (strict assignee match) · 80 filings since 2022 vs 30 in 2017-21 rank vs industry peers · Fliar Intelligence Index 69/100 | $318M | 17 mo ago | 173 | Colin Wessells Founder & Chief Technology & Product Officer | Deadpooled | StatamicPHPSalesforce+17 | 110 patents Patents concentrated in electrical & electronics | — |
| 3 | Everactive Developer of self-powered chips for wireless ambient Internet of Things devices 64Funding top 21%Moat top 21%Patents top 26%Innovation top 27% All 9 signals ▾Fundingtop 21% Moattop 21% Patentstop 26% Innovationtop 27% Growthtop 31% Techtop 45% Talentbottom 49% Marketbottom 43% Globalbottom 39% Funding: Raised $160M across 11 rounds · 11 rounds over 14 yrs (0.8/yr) Moat: Editorial + unicorn rating 8/10 · IP moat: 51 patents rank vs industry peers · Fliar Intelligence Index 64/100 | $160M | 24 mo ago | 91 | David Wentzloff Co-founder and Co-CTO | Series C | WordPressApple iCloud MailGoogle Workspace+22 | 51 patents Wireless monitoring and control of steam traps and pressurized energy systems | — |
| 4 | Sivapower Provider of thin-film solar panels | $125M | 111 mo ago | 26 | — | Deadpooled | — | — | — |
| 5 | Alta Devices Mobile power technology. | $72M | 186 mo ago | 286 | — | Acquired | — | 426 patents High-efficiency III-V thin-film photovoltaic manufacturing and surface passivation. | — |
| 6 | Varentec Grid Control management technology provider | $43M | 82 mo ago | 24 | — | Series C | — | 81 patents Grid edge voltage control and VAR optimization for distributed energy resources | — |
| 7 | Crystal Solar Solar energy solutions provider for residential, business, and EV charging | $25M | 179 mo ago | 5 | — | Series B | — | 64 patents Advanced epitaxial silicon solar cells and wafer recycling technologies. | — |
| 8 | Lunera Commercial LED Lighting | $23M | 149 mo ago | 38 | Mark Walsh Co-Founder | Deadpooled | — | — | — |
| 9 | EvolOH Manufacturer of electrolyzer stacks for clean hydrogen production | $20M | 29 mo ago | 13 | Jimmy Rojas Founder & CEO | Series A | WordPressMySQLPHP+14 | 53 patents Advanced water electrolysis hardware, catalysts, and scalable manufacturing of MEA and flow fields | — |
| 10 | Echelon Provides an open-standard embedded platform for IoT Applications | $16M | 186 mo ago | 40 | — | Acquired | — | 166 patents Patents concentrated in electrical & electronics | — |
| 11 | Falcon Computing Acceleration solutions for compute-intensive data center applications | $12M | 113 mo ago | 15 | — | Acqui-Hired | — | — | — |
| 12 | TeraWatt Technology Manufacturer of lithium-ion batteries for lighter, smaller, more powerful, safer use 45News top 19%Growth top 20%Talent top 31%Funding top 38% All 9 signals ▾Newstop 19% Growthtop 20% Talenttop 31% Fundingtop 38% Producttop 45% Moattop 48% Techbottom 44% Globalbottom 36% Marketbottom 22% News: 9 BI events in 12 mo (of 18 tracked, 3 types) · +200% YoY Growth: Web rank 50,000,000 → 10,000,000 YoY · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 45/100 | $5M | 5 mo ago | 4 | Kazuma Yamauchi Co-Founder | Series C | WebflowApple iCloud MailMicrosoft 365+13 | — | — |
| 13 | Auro Robotics Hi-tech robotics startup building autonomous vehicles | $2M | 124 mo ago | 15 | — | Acquired | — | — | — |
| 14 | Zan Compute IoT enabled cloud-based analytics platform for building management | $1M | 92 mo ago | 25 25 → 50 (+100%) | Junaith Ahemed Shahabdeen Co-Founder & CEO | Seed | ZohoUbuntuBootstrap+21 | — | — |
Top 12 Energy Tech companies in Santa Clara
#1
Deadpooled · Santa Clara, California · founded 2012 · 173 employees$317.9Mraised▾
Manufacturer of sodium-ion batteries for commercial and industrial power applications. The company's batteries utilize Prussian blue electrodes combined with sodium ions. This chemistry delivers fast charging and power delivery. The batteries are designed to provide a long cycle life and enhanced safety features.
- Apr 2025Grant (prize money)$19.9M
- Apr 2025Grant (prize money)$19.9M
- Apr 2025Grant (prize money)$19.9M
- Apr 2025Series D$55.4M
#2
Series C · Santa Clara, California · founded 2017 · 4 employees$5Mraised▾
Manufacturer of lithium-ion batteries for lighter, smaller, more powerful, safer use. It focuses on next-generation lithium-ion battery production. The company develops batteries for a sustainable future. It has achieved ISO9001 certification for its mass production facility.
- Apr 2026Series C—
- Sep 2025Series C$5M
- Jul 2025Series C—
- Jun 2023Series B—
#3
Series C · Santa Clara, California · founded 2012 · 91 employees$159.8Mraised▾
Developer of self-powered chips for wireless ambient Internet of Things devices. The company provides systems-on-chip that include an ARM core, low-power radio receiver, energy-harvesting power management unit, and sensor interfaces. These chips enable continuous data sensing, processing, and wireless transmission using harvested energy. The company's technology aims to expand the reach of the Internet of Things.
- Aug 2024Series C$10.9M
- Nov 2022Series C$18.7M
- Aug 2021Series C$16M
- Sep 2020Series C$35.4M
#4
Series A · Santa Clara, California · founded 2020 · 13 employees$20.1Mraised▾
Manufacturer of electrolyzer stacks for clean hydrogen production. The company focuses on high-throughput manufacturing of electrochemical stacks, offering reliable supply chains and fast production techniques. It sells stack modules designed to reduce risks and simplify plant design for engineering, commissioning, and integration. The company aims to provide lower factory and stack costs with domestic supply chains, enabling integrators to use standard balance-of-plant components.
- Mar 2024Series A$20M
- Jul 2023Grant (prize money)$200K
- Sep 2022Grant (prize money)$274.9K
- Aug 2021Grant (prize money)$500K
#5
Acquired · Santa Clara, California · founded 2001 · 363 employees$500Mraised▾
MiaSolé manufactures copper indium gallium selenide (CIGS) PV modules which are thin and flexible and can be used for roofing purpose and in flexible mobile devices.
- Mar 2012Series G$55M
- Feb 2011Series F$106M
- Jul 2008Series E$200M
- Jan 2008Grant (prize money)—
#6
Deadpooled · Santa Clara, California · founded 2006 · 26 employees$124.9Mraised▾
Provider of thin-film solar panels. The company offers CIGS-based solar panels, energy meters, water heaters, roofing materials, wind energy systems, and more.
- May 2017Series D$25M
- Mar 2016Series D$5M
- Feb 2015Series D$4.2M
- Jan 2015Grant (prize money)$3M
#7
Acquired · Santa Clara, California · founded 2008 · 286 employees$72Mraised▾
Alta Devices produces high Gallium Arsenide solar PV modules which have a high efficiency and flexible. They also make mobile devices solar charger, solar wearable, energy sensors which can be used to sense power consumption and offers solar power for small unmanned devices.
- Mar 2011PE$72M
#8
Series C · Santa Clara, California · founded 2009 · 24 employees$43.1Mraised▾
Varentec develops innovative, compact and high-performance power electronics and total systems for the electric grid and industrial applications. Its grid edge control solutions use ENGO hardware(ENGO V) and software (ENGO Manager) to deliver dynamic, decentralized real-time control of voltage and VARs all along a distribution line, enabling a wide range of benefits and capabilities.
#9
Deadpooled · Santa Clara, California · founded 2009 · 38 employees$23Mraised▾
Lunera Lighting designs and manufactures innovative commercial LED lighting fixtures and lamps. Their products reduce operating expenses by lowering electricity and maintenance costs. They have three kinds of LED products called Helen lamp, Susan lamp and lucy lamp. Existing investors in Lunera include Westly Group, Kohlberg Ventures, Navitas Capital and RCG Ventures LLC
- Apr 2014Conventional Debt$5M
- May 2013Series B$6.1M
- Apr 2013Series B$2.5M
- Nov 2011Series B$14.4M
#10
Series B · Santa Clara, California · founded 2008 · 5 employees$25Mraised▾
Solar energy solutions provider for residential, business, and EV charging. The company is dedicated to providing cutting-edge solar solutions, including solar PV and battery systems, electric vehicle charging infrastructure, and comprehensive services like system design, calibration, repair, consultation, programming, installation, commissioning, maintenance, and customer training. They focus on transforming spaces into energy-efficient and sustainable hubs, offering cost savings and a reliable green energy source. They are committed to innovation, excellence, and ethical practices, aiming to be a trusted global leader in smart energy solutions. They offer sustainable alternatives, environmental benefits, and financial savings. They are a high-tech enterprise driving innovation in the solar energy sector, with a focus on research and development.
- Sep 2011Series B$15M
- Aug 2008Series A$10M
#11
Acquired · Santa Clara, California · founded 1988 · 40 employees$16Mraised▾
Provides an open-standard embedded platform for IoT Applications. It claims its platform is being used to connect over a hundred million devices across applications like Smart Grid, Cities, Buildings, etc. It has a line of network infrastructure products called Lon Works Infrastructure (LWI) which includes transceivers, control modules, routers, network interfaces, development tools, software tools, and toolkits. For system integrator serving the street lighting, remote facility monitoring, and energy management markets, it has developed the i.LON Smart Server products help in enabling energy management. For the electric utility industry, the Company has developed a grid infrastructure system, the Networked Energy Services (NES) system. The NES system provides a two-way information and control path between the utility and its customer.
- Mar 2011PE$16M
#12
Acqui-Hired · Santa Clara, California · founded 2014 · 15 employees$11.6Mraised▾
Acceleration solutions for compute-intensive data center applications. It provides computing Solutions for compute-intensive data center applications. The solution offered by the company enables energy efficiency and productivity gains. The product offered is Kestrel Runtime, which simplifies the dynamic load balancing of applications across multiple compute resources.
- Apr 2017Series B$8M
- Jan 2015Seed$1.6M
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.