Radar · Energy Storage Tech in San Francisco
Best Energy Storage Tech Companies in San Francisco, United States
The 75 best Energy Storage Tech companies in San Francisco, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: TeraWatt.
By Rohit KhannaTrends & Stories
75companies tracked
$2.4Bdisclosed funding
1unicorns
45have raised
FLIAR INTELLIGENCE · ENERGY STORAGE TECH × SAN FRANCISCO
Our analysis of 50 Energy Storage Tech companies
$13.7b in tracked funding; 88% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
50companies analysed
88%cloud-native stacks
2025funding peak (by rounds)
4unicorns
2015median founding year
258kcombined LinkedIn audience
45%of audience held by top 3
8companies hiring publicly (12 mo)
Ranked: Best Energy Storage Tech companies in San Francisco
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Web popularity | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | TeraWatt Provider of electrified transport solutions | $1.1B | 45 mo ago | 57 | Benjamin Birnbaum Co-Founder; Board Director | WebflowLeafletMapbox.js+18 | Top 10M | — | 1 job opening |
| 2 | Ample 🦄 Provider of modular battery swapping for electric vehicles 69Innovation top 21%Funding top 23%Moat top 25%Patents top 26% All 9 signals ▾Innovationtop 21% Fundingtop 23% Moattop 25% Patentstop 26% Talenttop 38% Markettop 41% Growthtop 45% Globaltop 47% Techbottom 37% Innovation: 68 patents (top 29% of patent-holders) · 52 filings since 2022 vs 12 in 2017-21 Funding: Raised $280M across 5 rounds · 5 rounds over 8 yrs (0.6/yr) rank vs industry peers · Fliar Intelligence Index 69/100 | $280M | 19 mo ago | 173 | John Souza Co-founder & President | WordPressMySQLPHP+19 | Top 5M | 68 patents Electric vehicle battery swapping systems, thermal safety, and fastener technology | — |
| 3 | SPAN Smart energy management technology platform that modernizes residential electrical systems 82Funding top 13%Innovation top 18%Patents top 20%Growth top 28% All 11 signals ▾Fundingtop 13% Innovationtop 18% Patentstop 20% Growthtop 28% Moattop 28% Producttop 35% Talenttop 38% Techtop 42% Customerstop 42% Markettop 43% Globalbottom 42% Funding: Raised $231M across 10 rounds · 10 rounds over 8 yrs (1.2/yr) Innovation: 78 patents (top 21% of patent-holders) · 64 filings since 2022 vs 14 in 2017-21 rank vs industry peers · Fliar Intelligence Index 82/100 | $231M | 5 mo ago | 220 | Jireh Seow Co-Founder | WebflowApple iCloud MailGoogle Workspace+22 | Top 1M | 78 patents Smart electrical distribution panels and load management for residential/commercial energy systems | 1 job opening |
| 4 | Plus Power Manufacturer of batteries | $219M | 55 mo ago | 202 | — | WordPressApple iCloud MailMySQL+20 | Top 10M | — | — |
| 5 | Volta Operator of EV charging networks | $91M | 65 mo ago | 237 | — | — | — | 52 patents Microfluidic fluid control, droplet manipulation, and magnetic bead separation technologies. | 1 expansion · 1 award |
| 6 | Sunverge Developer of smart energy storage and energy management systems | $75M | 36 mo ago | 33 | Dean Sanders Co-Founder & CTO | — | — | — | — |
| 7 | uBeam Provider of wireless charging system solutions | $59M | 100 mo ago | 29 | — | — | — | 192 patents Ultrasonic wireless power transfer using piezoelectric transducers and beamforming. | — |
| 8 | Weave Grid Developer of a platform for electric vehicle and grid integration 45Tech top 24%Talent top 28%Funding top 31%Moat top 31% All 8 signals ▾Techtop 24% Talenttop 28% Fundingtop 31% Moattop 31% Growthbottom 47% Globalbottom 39% Marketbottom 26% Newsbottom 17% Tech: 45 technologies across 6/8 capability areas · Cloud: Amazon Alb, Amazon Web Services Talent: Analyst team rating 4/5 rank vs industry peers · Fliar Intelligence Index 45/100 | $50M | 9 mo ago | 10 | — | WebflowApple iCloud MailGoogle Workspace+27 | Top 5M | — | 1 partnership |
| 9 | PolyPlus Innovating next-generation battery technology with glass-protected lithium and seawater batteries | $37M | 16 mo ago | 13 | Steven Visco Chief Executive Officer and CTO | WordPressMySQLPHP+16 | Top 50M | — | — |
| 10 | EV Realty Provider of charging hubs for commercial electric vehicle fleets 45Growth top 23%Talent top 28%News top 29%Funding top 34% All 9 signals ▾Growthtop 23% Talenttop 28% Newstop 29% Fundingtop 34% Moattop 37% Innovationbottom 39% Patentsbottom 38% Globalbottom 31% Marketbottom 27% Growth: 1 acquisition/expansion move in 24 mo · Fresh capital in last 24 mo Talent: 3 named leaders on record · 3 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 45/100 | $28M | 7 mo ago | 13 | Sean Kiernan Co-Founder & COO | — | — | 13 patents Advanced thin‑film solar cell manufacturing processes and module integration technologies. | 1 partnership · 1 expansion |
| 11 | Geli Develops energy storage operating software | $24M | 72 mo ago | 27 | — | — | — | — | — |
| 12 | ElectrIQ Power Energy resources distribution management solution provider | $19M | 60 mo ago | 49 | — | — | — | — | — |
| 13 | Ardica Technologies Manufactures Li-ion batteries | $17M | 94 mo ago | 16 | — | — | — | 59 patents Metal hydride fuel production and high‑temperature fuel‑cell system technologies | — |
| 14 | Stable Auto Provider of data solutions using ML to plan EV charging stations | $14M | 45 mo ago | 5 | Rohan Puri Co-Founder & CEO | — | — | — | — |
| 15 | Optiwatt Charging management app for electric vehicle owners | $14M | 21 mo ago | 10 | Casey Donahue Founder & CEO | Amazon WebstoreSentryTypeScript+43 | Top 5M | — | — |
| 16 | Zitara Provider of cloud based and embedded battery management software | $12M | 18 mo ago | 25 | Evan Murphy Co-Founder & CTO | WebflowVimeoAmazon Web Services+17 | Top 10M | — | — |
| 17 | UNIGRID Manufacturer of solid state batteries for grid | $12M | 24 mo ago | 5 | — | WordPress Block EditorElementorWordPress+19 | Top 10M | 16 patents Manufacturing advanced electrolyte and electrode materials for high-performance rechargeable batteries. | 1 job opening · 1 award |
| 18 | Ammobia Technology solution for ammonia production 27Funding top 30%Talent top 38%Patents top 45%Moat top 47% All 7 signals ▾Fundingtop 30% Talenttop 38% Patentstop 45% Moattop 47% Innovationtop 49% Globalbottom 37% Marketbottom 21% Funding: Raised $11.7M across 2 rounds · 2 rounds over 2 yrs (1.0/yr) Talent: 2 named leaders on record · 2 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 27/100 | $12M | 5 mo ago | 3 | Karen Baert Co-Founder & CEO | — | — | 8 patents Integrated catalytic sorbent systems for ammonia synthesis and on‑site ammonia capture | 1 partnership · 2 awards |
| 19 | EverCharge Provider of electric vehicle charging solutions for fleets and multi-family | $9M | 87 mo ago | 93 | Jason Appelbaum CEO | SentryApple iCloud MailGoogle Workspace+28 | Top 5M | 42 patents Smart EV charging infrastructure with metering, load management, and fleet scheduling solutions. | — |
| 20 | Inlyte Grid battery solution | $8M | 31 mo ago | 5 | Antonio Baclig Founder & CEO | WordPressApple iCloud MailGoogle Workspace+24 | Top 50M | — | — |
| 21 | Drive Powerline AI-powered solutions for connecting batteries for EVs 22Talent top 38%Funding top 44%AI top 45%Tech bottom 40% All 6 signals ▾Talenttop 38% Fundingtop 44% AItop 45% Techbottom 40% Globalbottom 36% Marketbottom 18% Talent: 2 named leaders on record · 2 C-suite/founder profiles curated Funding: Raised $7.4M across 2 rounds · 2 rounds over 4 yrs (0.5/yr) rank vs industry peers · Fliar Intelligence Index 22/100 | $7M | 4 mo ago | 8 | Julian Lamy Co-Founder & Chief Technology Officer | Framer SitesUIKitReact+8 | Top 50M | — | — |
| 22 | Material Developer of 3D printing technology for full-stack battery manufacturing | $7M | 4 mo ago | — | Gabe Elias Co-Founder & CEO | WordPressMySQLPHP+16 | Top 50M | — | 1 award |
| 23 | Bluedot Provider of a charging point locator app | $7M | 29 mo ago | 28 | Selinay Parlak Co-Founder & COO | — | — | 15 patents Vehicle tire monitoring sensors and metagenomic sequencing barcode/analysis technologies | — |
| 24 | EnZinc Developer of rechargeable zinc anode batteries | $4M | 18 mo ago | 15 15 → 23 (+53%) | Deborah Knuckey Co-Founder & CMO | WordPressMySQLPHP+17 | Top 50M | — | — |
| 25 | Pila Energy Developer of home battery systems providing backup power and energy management | $4M | 8 mo ago | — | Cole A Founder & CEO | Cart FunctionalityShopifyTailwind CSS+19 | Top 5M | — | 1 award |
| 26 | Emobi AI-powered station management solutions for station operators 40Funding top 29%AI top 45%Talent bottom 49%Market bottom 37% All 5 signals ▾Fundingtop 29% AItop 45% Talentbottom 49% Marketbottom 37% Globalbottom 29% Funding: Raised $3.9M across 2 rounds · 2 rounds over 4 yrs (0.5/yr) AI: Product described with: ai-powered rank vs industry peers · Fliar Intelligence Index 40/100 | $4M | 4 mo ago | — | Lin Fa Founder & CEO | — | — | — | — |
| 27 | Electriphi Provides machine learning and AI-based software tools for charging infrastructure management | $4M | 77 mo ago | 59 | Sanjay Dayal Co-Founder | — | — | 9 patents Telematics-based energy optimization and health monitoring for electric vehicle fleets | — |
| 28 | Paren Operations management solutions for EV charging station operators | $3M | 20 mo ago | — | Bill Ferro Co-Founder & CTO | WebflowApple iCloud MailGoogle Workspace+25 | Top 10M | — | — |
| 29 | Zyp Technologies Operator of battery swapping network for electric motorcycles and scooters | $3M | 23 mo ago | — | Hassan Khan Co-Founder | — | — | — | — |
| 30 | Monterra SaaS-based EV charger installation solutions | $2M | 30 mo ago | — | Thomas Noriega Co-Founder | — | — | — | — |
| 31 | PHION Technologies Limited information available | $2M | 28 mo ago | 5 | Jonathan Nydell Co-Founder | — | — | — | — |
| 32 | Doblet Provides mobile phone charging infrastructure | $1M | 133 mo ago | 11 | Doktor Gurson Co-Founder & CEO | — | — | — | — |
| 33 | Rincell Manufacturer of batteries | $1M | 29 mo ago | — | Jignesh Parikh Co-Founder & CEO | — | — | 2 patents High‑energy cylindrical Li‑ion batteries employing silicon‑carbon composite anodes. | — |
| 34 | ChargeWheel Provider of EV charging solutions for electric vehicles | $1M | 86 mo ago | 3 | — | Node.jsTailwind CSSReact+9 | Top 50M | — | — |
| 35 | SunTrain Provider of rail transport for utility-scale power using proprietary battery systems | $750K | 50 mo ago | 5 | — | WixSentryBootstrap+10 | Top 50M | 9 patents Railroad power supply and distribution systems for train propulsion | — |
| 36 | Voxel Energy Developer of data centers powered by solar energy and EV batteries | $500K | 5 mo ago | — | Max Pfeiffer Co-Founder & CTO | — | — | — | — |
| 37 | Dartboard Energy Provider of analytics platform for grid-scale battery | $500K | 15 mo ago | — | Rohun Ati Co-Founder & CEO | Framer SitesReactAmazon Web Services+7 | Top 50M | — | — |
| 38 | Verne Provider of rapid electricity deployment solutions for industrial power needs | $500K | 5 mo ago | — | David Jaramillo Co-Founder & CTO | — | — | 25 patents Cryo‑compressed hydrogen storage vessels with thermal management and composite overwrap systems | — |
| 39 | Rovilus.com Provider of innovative thermal management technology for industrial battery packs | $150K | 83 mo ago | 2 | Katherine Kan Co-Founder | — | — | — | — |
| 40 | Coulomb AI Provider of AI-based battery management system for electric vehicles | $125K | 57 mo ago | 54 | Khushboo Shrivastava Founder & CEO | Node.jsEmotionReact+10 | Top 50M | 92 patents High-power EV charging infrastructure and advanced battery management/thermal systems | — |
| 41 | Totus Power Generator reviews, guides, and information for home, recreational, and professional use | $125K | 128 mo ago | 1 | Siva Rajendran Founder & CEO | — | — | — | — |
Top 12 Energy Storage Tech companies in San Francisco
#1
Series C · San Francisco, California · founded 2014 · 220 employees$231Mraised▾
Series C · San Francisco, California · founded 2014 · 220 employees
Smart energy management technology platform that modernizes residential electrical systems. Its solutions replace traditional electrical panels with smart systems that provide homeowners with real-time visibility into household energy usage, circuit-level monitoring, and remote control of appliances and connected devices. It is designed to support modern electrified homes by integrating technologies such as home batteries, electric vehicle chargers, solar systems, HVAC systems, and heat pumps into a centralized energy management ecosystem.
Fliar Intelligence Index™ 82how this company ranks against its industry peers
Funding
top 13%Innovation
top 18%Patents
top 20%Growth
top 28%Moat
top 28%Product
top 35%Funding: Raised $231M across 10 rounds · 10 rounds over 8 yrs (1.2/yr) · Last round Series C (Jan 2026)
Innovation: 78 patents (top 21% of patent-holders) · 64 filings since 2022 vs 14 in 2017-21 · Deep-tech classification: Tech Hardware
Patents: 78 patents matched (strict assignee match) · 64 filings since 2022 vs 14 in 2017-21 · Latest publication 2026
Audience (LinkedIn): 35k LinkedIn followers — 13.7% of this cohort's audience
Hiring (LinkedIn): 1 hiring post in 12 mo (public)
Funding rounds
- Jan 2026Series C$163.3M
- Sep 2025Series B$25M
- Jun 2025Grant (prize money)$999.8K
- Apr 2025Grant (prize money)$999.8K
Founders & team
Investors
ArcTern Ventures, Capricorn, Incite, One Zero Capital, Wireframe Ventures, Ulu Ventures
Tech stack
AccessibeAhrefsApple Icloud MailAuraBootstrapCloudflare
#2
Series B · San Francisco, California · founded 2018 · 10 employees$50Mraised▾
Series B · San Francisco, California · founded 2018 · 10 employees
Developer of a platform for electric vehicle and grid integration. The platform offers utilities visibility and control of local grid capacity. It aligns electric loads with network capacity by optimizing device charging schedules. The platform supports renewable energy integration and affordable electrification. It mitigates challenges with distributed load flexibility.
Fliar Intelligence Index™ 45how this company ranks against its industry peers
Tech
top 24%Talent
top 28%Funding
top 31%Moat
top 31%Growth
bottom 47%Global
bottom 39%Tech: 45 technologies across 6/8 capability areas · Cloud: Amazon Alb, Amazon Web Services · Devops: Envoy
Talent: Analyst team rating 4/5
Funding: Raised $50.0M across 3 rounds · 3 rounds over 8 yrs (0.4/yr) · Last round Series B (Sep 2025)
Audience (LinkedIn): 16k LinkedIn followers — 6.4% of this cohort's audience
Activity (LinkedIn): 2 partnerships (incl. AEP Public Service Company of Oklahoma) announced in 12 mo
Funding rounds
- Sep 2025Series B—
- Jan 2025Series B—
- Dec 2024Conventional Debt—
- Dec 2024Series B$28M
Investors
The Westly Group, Breakthrough Energy, Coatue, Grok Ventures, Plug and Play Tech Center, Collab Fund
Tech stack
Amazon AlbAmazon Web ServicesApple Icloud MailAwinCloudflareCloudflare Bot Management
#3
Series C · San Francisco, California · founded 2021 · 13 employees$28Mraised▾
Series C · San Francisco, California · founded 2021 · 13 employees
Provider of charging hubs for commercial electric vehicle fleets. The company offers dedicated stalls with reserved access and on-route charging options. The charging system adjusts to vehicle schedules, providing power based on need. It designs charging infrastructure to support businesses and their customers.
Fliar Intelligence Index™ 45how this company ranks against its industry peers
Growth
top 23%Talent
top 28%News
top 29%Funding
top 34%Moat
top 37%Innovation
bottom 39%Growth: 1 acquisition/expansion move in 24 mo · Fresh capital in last 24 mo
Talent: 3 named leaders on record · 3 C-suite/founder profiles curated
News: 5 BI events in 12 mo (of 6 tracked, 4 types) · +400% YoY · 1 high-value events (IPO/M&A/funding/contracts) in 12 mo
Audience (LinkedIn): 5k LinkedIn followers
Activity (LinkedIn): 1 partnerships · 1 expansions (incl. Ava Community Energy) announced in 12 mo
Funding rounds
- Nov 2025Series C—
- Sep 2025Series C$75M
- Nov 2022Series B$28M
Founders & team
Investors
Segue Sustainable Infrastructure, Fifth Wall, Broadscale Group, Alpaca, NGP, Outpost
#4
Seed · San Francisco, California · founded 2022 · 3 employees$11.7Mraised▾
Seed · San Francisco, California · founded 2022 · 3 employees
Technology solution for ammonia production. It uses Haber Bosch solution to produce clean ammonia from clean hydrogen and air.
Fliar Intelligence Index™ 27how this company ranks against its industry peers
Funding
top 30%Talent
top 38%Patents
top 45%Moat
top 47%Innovation
top 49%Global
bottom 37%Funding: Raised $11.7M across 2 rounds · 2 rounds over 2 yrs (1.0/yr) · Last round Seed (Jan 2026)
Talent: 2 named leaders on record · 2 C-suite/founder profiles curated
Patents: 8 patents matched (strict assignee match) · 8 filings since 2022 vs 0 in 2017-21 · Latest publication 2026
Audience (LinkedIn): 6k LinkedIn followers — 2.4% of this cohort's audience
Activity (LinkedIn): 1 partnerships · 2 awards (incl. Shell Low Carbon Solutions) announced in 12 mo
Funding rounds
- Jan 2026Seed$7.5M
- Apr 2024Seed$4.2M
Founders & team
Investors
Starlight Ventures, Collab Fund, Chevron Technology Ventures, Zero Infinity Partners, R7 Partners, DNX Ventures
#5
Seed · San Francisco, California · founded 2021 · 8 employees$7.4Mraised▾
Seed · San Francisco, California · founded 2021 · 8 employees
AI-powered solutions for connecting batteries for EVs. The platform offers solutions to connect batteries, stationary and mobile (EVs), to the opportunities in the electricity grid.
Fliar Intelligence Index™ 22how this company ranks against its industry peers
Talent
top 38%Funding
top 44%AI
top 45%Tech
bottom 40%Global
bottom 36%Market
bottom 18%Talent: 2 named leaders on record · 2 C-suite/founder profiles curated
Funding: Raised $7.4M across 2 rounds · 2 rounds over 4 yrs (0.5/yr) · Last round Seed (Feb 2026)
AI: Product described with: ai-powered
Audience (LinkedIn): 2k LinkedIn followers
Hiring (LinkedIn): 1 hiring post in 12 mo (public)
Funding rounds
- Feb 2026Seed$7M
- Jan 2022Seed$380K
- Seed—
Founders & team
Investors
MaC Venture Capital, LG Technology Ventures, J-Impact Fund, Voyager, Climate Capital
#6
Ample 🦄Series D · San Francisco, California · founded 2014 · 173 employees$280Mraised▾
Ample 🦄
Series D · San Francisco, California · founded 2014 · 173 employees
Provider of modular battery swapping for electric vehicles. The company delivers fully charged batteries to electric vehicles using modular battery swapping technology. This technology allows for a quick exchange of depleted batteries with fully charged ones. The modular design adapts to various electric vehicle makes and models.
Fliar Intelligence Index™ 69how this company ranks against its industry peers
Innovation
top 21%Funding
top 23%Moat
top 25%Patents
top 26%Talent
top 38%Market
top 41%Innovation: 68 patents (top 29% of patent-holders) · 52 filings since 2022 vs 12 in 2017-21 · Deep-tech classification: Tech Hardware
Funding: Raised $280M across 5 rounds · 5 rounds over 8 yrs (0.6/yr) · Last round Series D (Nov 2024)
Moat: Editorial + unicorn rating 9/10 · IP moat: 68 patents · Unicorn
Audience (LinkedIn): 20k LinkedIn followers — 7.6% of this cohort's audience
Activity (LinkedIn): 1 product launches announced in 12 mo
Funding rounds
- Nov 2024Series D$25M
- Oct 2021Series C$50M
- Jun 2021Series C$160M
- Feb 2020Series B$35M
Founders & team
Investors
PTT, ENEOS Group, Repsol, Shell, Smrt Ventures, Moore Ventures
Tech stack
Animate.CssFancyboxFont AwesomeGoogle AnalyticsGoogle WorkspaceGsap
#7
Seed · San Francisco, California · founded 2014$7.1Mraised▾
Seed · San Francisco, California · founded 2014
Developer of 3D printing technology for full-stack battery manufacturing. The company's proprietary platform produces full-stack batteries in-situ, including the anode, cathode, separator, and casing. This manufacturing process allows for printing any chemistry and shape, using a high percentage of interior volume. The technology aims to integrate energy directly into product designs.
LinkedIn Pulse recent public activity · Jul 2026
Audience: 2k LinkedIn followers
Hiring: 1 hiring post in 12 mo (public) · hiring: Texas Advanced R&D Facility
Activity: 1 partnerships · 1 awards (incl. CES) announced in 12 mo
Funding rounds
- Jan 2026Seed$7.1M
Founders & team
Investors
Outlander VC, Harpoon, GoAhead Ventures, Myelin, Giant Step Capital, Demos
Tech stack
CloudflareCloudflare Bot ManagementCore-JsElementorGodaddyGoogle Analytics
#8
Seed · San Francisco, California · founded 2020$3.9Mraised▾
Seed · San Francisco, California · founded 2020
AI-powered station management solutions for station operators. The platform offers features that includes infrastructure management, charging management, data refinement, and more.
Fliar Intelligence Index™ 40how this company ranks against its industry peers
Funding
top 29%AI
top 45%Talent
bottom 49%Market
bottom 37%Global
bottom 29%Funding: Raised $3.9M across 2 rounds · 2 rounds over 4 yrs (0.5/yr) · Last round Seed (Jan 2026)
AI: Product described with: ai-powered
Talent: 1 named leader on record · 1 C-suite/founder profile curated
Audience (LinkedIn): 3k LinkedIn followers
Activity (LinkedIn): 1 product launches · 3 partnerships (incl. HostCharge) announced in 12 mo
Funding rounds
- Jan 2026Seed$3.4M
- 2022Seed$500K
Founders & team
Investors
Florida Funders, Aves Ventures, Collab Fund, Gaingels, Gener8tor, Goodwater Capital
#9
Funding Raised · San Francisco, California · founded 1991 · 13 employees$37.5Mraised▾
Funding Raised · San Francisco, California · founded 1991 · 13 employees
Innovating next-generation battery technology with glass-protected lithium and seawater batteries. They are pioneers in ultra-high energy density chemistries, including Li-Air, Li-Seawater, and aqueous Li-S batteries. Their glass protected Li metal batteries feature a solid-state lithium anode laminate that doubles the energy density of current rechargeable batteries. They focus on developing and patenting protected lithium electrodes, enabling the safe use of high energy density lithium metal anodes in batteries. Their portfolio covers liquid and solid electrolytes, and advanced battery chemistries including Lithium Air, Lithium Seawater, and Lithium Sulfur systems. They develop battery structures, seals and associated hardware necessary to maximize the performance of its unique chemistries. Their technology addresses limitations in consumer electronics, drones, robotics, automotive, transportation, and medical devices.
Funding rounds
- Feb 2025Grant (prize money)$10M
- Jan 2015Grant (prize money)$4.5M
- Dec 2013Grant (prize money)—
- Sep 2013Grant (prize money)$12.6M
Founders & team
Investors
OSTI, Military Health, Stb
#10
Seed · San Francisco, California · founded 2021$4Mraised▾
Seed · San Francisco, California · founded 2021
Developer of home battery systems providing backup power and energy management. The systems connect to standard outlets without rewiring. Software optimizes energy usage and provides outage notifications. Batteries can be added to expand coverage throughout a home. The system can charge from utility or solar power. An application allows users to monitor and control energy usage.
LinkedIn Pulse recent public activity · Jul 2026
Audience: 3k LinkedIn followers
Activity: 1 awards announced in 12 mo
Funding rounds
- Oct 2025Seed$4M
Founders & team
Investors
R7 Partners, Toyota Ventures, Refactor Capital, GS Futures
Tech stack
Apple PayCart FunctionalityCloudflareCore-JsFacebook PixelGoogle Analytics
#11
Seed · San Francisco, California · founded 2020$499.7Kraised▾
Seed · San Francisco, California · founded 2020
Provider of rapid electricity deployment solutions for industrial power needs. It offers solutions when the grid cannot provide sufficient power. The company's technology stack enables decentralized, rapid, and efficient power generation. It focuses on providing energy where and when it is needed.
LinkedIn Pulse recent public activity · Jul 2026
Audience: 6k LinkedIn followers — 2.4% of this cohort's audience
Funding rounds
- Jan 2026Seed—
- Mar 2025Grant (prize money)$499.7K
Founders & team
Investors
Momentum Capital, OSTI
#12
Seed · San Francisco, California · founded 2026$500Kraised▾
Seed · San Francisco, California · founded 2026
Developer of data centers powered by solar energy and EV batteries. The company focuses on creating energy independent compute solutions. It utilizes solar power and repurposed electric vehicle batteries.
LinkedIn Pulse recent public activity · Jul 2026
Audience: 1k LinkedIn followers
Activity: 1 product launches · 1 partnerships (incl. Sift) announced in 12 mo
Funding rounds
- Jan 2026Seed$500K
Founders & team
Investors
Y Combinator
Funding & investor landscape
$2.4Btotal disclosed funding
41companies funded
120disclosed rounds
0rounds last 90 days
Most active investors
Y Combinator6 rounds
Notable founders
Jireh Seow
Co-Founder · SPAN
Arch Rao
Founder & CEO · SPAN
Sean Kiernan
Co-Founder & COO · EV Realty
Patrick Sullivan
Co-Founder and CEO · EV Realty
Karen Baert
Co-Founder & CEO · Ammobia
Tristan Gilbert
Co-Founder · Ammobia
Julian Lamy
Co-Founder & Chief Technology Officer · Drive Powerline
Matineh Eybpoosh
Co-Founder & CEO · Drive Powerline
John Souza
Co-founder & President · Ample
Khaled Hassounah
Founder & CEO · Ample
Gabe Elias
Co-Founder & CEO · Material
Lin Fa
Founder & CEO · Emobi
Prism market signals · United States · country-scoped Prism corpus, 1,481,159 docs
Market landscape — 10 sub-themes by coverage
Share of Energy Storage Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
RESEARCH SIGNALS · United States
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.
research sentiment over time
200820172026
enthusiastic · positive · guarded tone
Tone is overwhelmingly optimistic and softening — the enthusiastic (strongly-positive) share moved 60% → 57% across 2008–2026.
top research entities
- Electric Power Research Institute204
- Pacific Northwest National Laboratory202
- Argonne National Laboratory193
- Northeastern University151
- Massachusetts Institute of Technology124
leading researchers
Arumugam Manthiram · Vlachokostas, Alex · Di Wu · Yi Cui · Yury Gogotsi · Wei Wang · Freederia AI Researcher · Guihua Yu
▲
Breakthroughs1,937 · 33%
▼ 34%→32% share
▼0.9× share momentum1 median citations83% since 2021mostly methods-led
Breakthroughs are cooling (34%→32% of field), led by Battery (electricity).
rising sub-themes (early→recent)
- Battery (electricity)57→359
- Electrolyte37→318
- Electrochemistry30→240
- Cathode32→224
- Anode37→209
Newly emergingEnergy (signal processing) 0→87 · Thermal 0→34 · Interphase 0→28
Landmark Challenges and Prospects of Lithium–Sulfur Batteries · 2,319 cites
◆
Advancements2,724 · 46%
▲ 40%→48% share
▲1.2× share momentum1 median citations87% since 2021mostly methods-led
Advancements are rising (40%→48% of field), led by Renewable energy.
rising sub-themes (early→recent)
- Renewable energy40→492
- Battery (electricity)59→507
- Power (physics)8→227
- Electrolyte27→244
- Electrochemistry37→240
Newly emergingNuclear engineering 0→34 · Ionic conductivity 0→30 · Efficient energy use 0→30
Landmark Sodium‐Ion Batteries · 4,393 cites
▼
Concerns798 · 13%
▼ 14%→13% share
▼0.9× share momentum2 median citations80% since 2021mostly reviews
Concerns are cooling (14%→13% of field), led by Battery (electricity).
rising sub-themes (early→recent)
- Battery (electricity)35→184
- Renewable energy24→156
- Electrolyte13→114
- Electrochemistry10→80
- Cathode9→72
Newly emergingDegradation (telecommunications) 0→21 · Sustainable energy 0→20 · Reliability (semiconductor) 0→19
Landmark Pseudocapacitive oxide materials for high-rate electrochemical energy storage · 5,233 cites
RESEARCH HOTSPOTS · United States
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.
SF Bay Area353 · +0.50
Boston340 · +0.51
Austin119 · +0.42
Atlanta118 · +0.59
Los Angeles108 · +0.58
New York105 · +0.53
Chicago86 · +0.58
San Diego83 · +0.53
Ann Arbor62 · +0.46
Philadelphia61 · +0.47
PATENT SIGNAL · United States
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.
8,522 filings3,681 assigneespeak 1092/yr2016–2025
filing momentum (YoY 2016–2025)
top patent filers
- General Electric592
- ESS Technology276
- GM Global TECH Operations233
- Fastcap Systems205
- UNIV California180
- Rondo Energy157
- United Technologies154
- Battelle Memorial Institute146
Common questions
How many Energy Storage Tech companies are there in San Francisco, United States?
Radar tracks 75 indexable Energy Storage Tech companies headquartered in San Francisco, United States that meet our profile-completeness bar.
What is the total funding raised by Energy Storage Tech companies in San Francisco, United States?
The Energy Storage Tech companies in San Francisco, United States on this list have raised a combined $2.4B in disclosed equity funding across 41 funded companies.
Which is the highest-funded Energy Storage Tech company in San Francisco, United States?
TeraWatt is the highest-funded Energy Storage Tech company in San Francisco, United States, with $1.1B in disclosed equity funding.
How many Energy Storage Tech companies in San Francisco, United States are funded?
41 of the 75 Energy Storage Tech companies in San Francisco, United States on this list have disclosed at least one equity funding round.
How many Energy Storage Tech unicorns are there in San Francisco, United States?
1 Energy Storage Tech company in San Francisco, United States on this list is valued at $1B or more.
Who are the top investors in San Francisco, United States Energy Storage Tech companies?
The most active investors in San Francisco, United States Energy Storage Tech companies on this list include Climate Capital, Y Combinator, Collab Fund, OSTI, Congruent Ventures.
Rohit KhannaTrends & Stories
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.