Best Energy Tech Companies in Seattle, United States
The 74 best Energy Tech companies in Seattle, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Porch Group.
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 Seattle
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Porch Group Provides software & service to home improvement industries | $718M | 38 mo ago | 1,800 | Matt Ehrlichman Founder | Cart FunctionalitySquarespace CommerceSquarespace+13 | — | — |
| 2 | Rad Power Bikes Developer of electric bicycles | $329M | 55 mo ago | 542 542 → 360 (-34%) | Mike Radenbaugh Founder & Chairman | Shogun Page BuilderCart FunctionalityShopify+44 | — | — |
| 3 | LevelTen Energy Online renewable energy PPA marketplace | $137M | 23 mo ago | 146 | Bryce Smith Founder & CEO | Webflow EcommerceWebflowAsana+24 | — | 1 job opening |
| 4 | Omnidian Provider of monitoring and maintenance solutions for solar PV systems | $81M | 14 mo ago | 192 | David Kenny Co-Founder & Chief Operating Officer | WordPress Block EditorwpBakeryWordPress+41 | — | — |
| 5 | Pure Watercraft Manufacturer of electric outboard motors and marine propulsion systems | $68M | 26 mo ago | 52 | Andy Rebele Founder & CEO | WordPressMySQLPHP+25 | 34 patents Electric marine propulsion systems, battery packs, charging infrastructure, and marine cable assemblies. | — |
| 6 | Deako Manufacturer of modular smart lighting systems and related accessories | $61M | 23 mo ago | 21 | — | Cart FunctionalityWordPressMySQL+47 | 3 patents Smart building energy management with networked occupancy prediction and load control | 1 launch |
| 7 | Optimum Energy SaaS-driven HVAC optimization software for commercial spaces | $41M | 115 mo ago | 47 47 → 106 (+126%) | Larry Stapleton CEO & President | WordPressApple iCloud MailMicrosoft 365+28 | 75 patents Patents concentrated in mechanical & energy engineering | 5 job openings |
| 8 | Electric Era Provider of end-to-end EV charging infrastructure | $33M | 10 mo ago | — | Quincy Lee Founder & CEO | WebflowApple iCloud MailGoogle Workspace+18 | — | — |
| 9 | Inspectify Provider of SaaS-driven inspection management services for professionals and homeowners | $33M | 20 mo ago | 34 34 → 75 (+121%) | Josh Jensen Co-Founder & CEO | Cart FunctionalityRubyTrix+33 | — | 1 launch |
| 10 | Powerit Solutions Demand response solutions | $26M | 145 mo ago | 22 | Kevin Klustner CEO & Board Director | — | 4 patents Smart power demand management and automated charging systems for electrical grids | — |
| 11 | Recurrent Auto Provider of EV battery health analytics and decision tools for vehicles | $24M | 29 mo ago | 17 17 → 32 (+88%) | Scott Case Co-Founder & CEO | WebflowSentryWistia+19 | — | — |
| 12 | Electric Era Provider of infrastructure and state-of-the-art high power battery storage | $24M | 28 mo ago | 9 | Elliot Owen Co-Founder | — | — | — |
| 13 | EnerG2 Provider of nano-structured material in energy storage systems | $24M | 161 mo ago | 27 | — | — | 88 patents Carbon electrode materials for supercapacitors and hydrogen storage nanocomposites. | — |
| 14 | Calico Energy Connectivity platform for integration of all small grid appliances | $13M | 104 mo ago | 24 24 → 29 (+21%) | Matthew Haak Co- Founder & Director | — | — | — |
| 15 | WiBotic Provider of wireless charging solutions for industrial robots | $11M | 18 mo ago | 30 | — | WordPress Block EditorWordPressApple iCloud Mail+20 | 29 patents Patents concentrated in transport & manufacturing processes | — |
| 16 | Allumia IoT and AI-driven energy management solutions | $10M | 51 mo ago | 37 | Quintin Barnes Co-Founder & VP | — | — | 1 partnership |
| 17 | Drift Offering solutions for energy trading and tracking | $9M | 104 mo ago | 3 | Ed McKenzie Co-Founder | — | — | — |
| 18 | Peregrine Hydrogen Green hydrogen production | $8M | 11 mo ago | 6 | Stefan Omelchenko Co-Founder / VP of Operations and Strategy | — | 20 patents Efficient sulfur‑dioxide depolarized electrolysis for low‑carbon hydrogen and sulfuric acid production | — |
| 19 | Oscilla Power Provider of wave energy harvesting system | $7M | 46 mo ago | 20 | Balky Nair President and CEO | WixSentryBootstrap+12 | 147 patents Wave energy conversion systems and marine vehicle power integration | 1 award |
| 20 | Optio3 IoT based web platform to monitor energy consumption in commercial buildings | $6M | 73 mo ago | 15 | — | — | — | — |
| 21 | Vor Systems AI-enabled transaction platform for energy asset transactions | $3M | 3 mo ago | — | Victor Shao Co-Founder & CEO | — | — | — |
| 22 | Buildpulse SaaS-driven analytics solutions for buildings | $3M | 97 mo ago | 17 | — | — | 8 patents Automated sensor discovery, classification, and airflow control for HVAC building automation systems. | — |
| 23 | Joule Case Manufacturer of lithium-based portable power stations | $2M | 49 mo ago | 25 | James Wagoner Pe CEO | Webflow EcommerceWebflowKnockout.js+22 | 32 patents Patents concentrated in electrical & electronics | — |
| 24 | BattGenie Provider of battery management solutions for Lithium-ion batteries | $2M | 46 mo ago | 8 | Chintan Pathak Co-Founder & CPO | — | 2 patents Battery management systems employing tanks‑in‑series modeling for charge/discharge control | 1 launch |
| 25 | Microplanet Technology Voltage regulation products for utilities | $1M | 149 mo ago | — | Brett Ironside CEO | — | 7 patents Electronic power conversion and control systems for regulated power electronics | — |
| 26 | Optimum Energy Online platform offering HVAC management solutions | $1M | 188 mo ago | 47 | — | — | 75 patents Advanced HVAC energy optimization and predictive free‑cooling for building grid integration | — |
| 27 | ClearSign Provider of combustion efficiency enhancement technology solutions | $1M | 16 mo ago | 16 16 → 23 (+44%) | — | WordPressMySQLPHP+25 | — | 1 launch |
| 28 | Hive Battery Developer of software and equipment for electric vehicle battery manufacturing | $1M | 100 mo ago | — | Eric Din | — | — | — |
| 29 | Ario Healthy lighting solutions mimicking natural light for better health and well-being | $1M | 116 mo ago | 3 | — | — | — | — |
| 30 | Ecellix Developer of anode material intended for next-generation lithium-ion batteries | $1M | 83 mo ago | 12 | Jerry Schwartz CEO & Chairman | Founder | — | — | — |
| 31 | BlueDot Photonics Manufacturer of nanotech-enabled solar panels and photonic devices | $1M | 61 mo ago | 2 | Matthew Crane Co-Founder | — | — | — |
| 32 | Narion Provider of flammability sensors | $498K | 35 mo ago | — | Eddie Kwon CEO | — | — | — |
| 33 | Harbor Wing Tech Designs and develops AUSVs for various industrial applications | $186K | 178 mo ago | — | Mark Ott Co-Founder & Director | — | — | — |
| 34 | LumiSands Develop silicon nano-materials to replace REE phosphors in LEDs | $180K | 161 mo ago | — | Chang Ching Tu Founder & CEO | — | — | — |
| 35 | AeonCharge App-based platform to locate electric vehicle charging points | $125K | 51 mo ago | 9 | Lin Fa Co-Founder & CTO | — | — | — |
Top 12 Energy Tech companies in Seattle
#1
Series C · Seattle, Washington · founded 2015 · 192 employees$81.5Mraised▾
Provider of monitoring and maintenance solutions for solar PV systems. It specializes in developing monitoring systems for domestic solar PV systems. It offers a day-to-day monitoring system that is used for risk management and project management of the installed photovoltaic system. Also, provides repair service and maintenance for solar energy system through signed contracts.
- Apr 2025Series C$87M
- Oct 2023Series B$25M
- Sep 2021Series B$36.4M
- Jun 2019Series A$15M
#2
Series A · Seattle, Washington · founded 2019$33Mraised▾
Provider of end-to-end EV charging infrastructure. Its offerings include installation, deployment, and management of battery-backed DC fast charging stations, accompanied by a software suite for real-time performance analytics, payments, and customer engagement. Its features encompass vertically integrated software control, proprietary battery energy storage to reduce grid demand, guaranteed 98 %+ uptime per port, and a 32″ customizable display for brand activation and loyalty programs.
- Aug 2025Series A$8.9M
- Jul 2023Series A$16.2M
- Mar 2021Series A$7.5M
- Jul 2020Seed$345K
#3
Seed · Seattle, Washington · founded 2025$3Mraised▾
AI-enabled transaction platform for energy asset transactions. It streamline transactions and financing for complex renewable energy assets, such as M&A, project finance, and tax equity deals. It processes massive document volumes to extract key insights like site risks, offtake details, and market dynamics, enabling faster due diligence for buyers, sellers, IPPs, lenders, and advisors.
- Mar 2026Seed$3M
#4
Series D · Seattle, Washington · founded 2016 · 146 employees$137.3Mraised▾
Online renewable energy PPA marketplace. It offers a renewable energy transaction platform connecting power buyers to PPAs from utility-scale wind, solar, and storage projects. The PPA product enables customers of various sizes to access the financial security of fixed-price renewables, economic benefits of at-scale projects, portfolio advantages of geographic & resource diversity, and sophisticated analysis of respected wholesale market experts.
- Jul 2024Series D$65M
- Nov 2023Series C$10M
- Aug 2021Series C$35M
- Jun 2019Series B$20.5M
#5
Series A · Seattle, Washington · founded 2023 · 6 employees$7.8Mraised▾
Green hydrogen production. It provides thermodynamic and dual production approach solutions for the production of hydrogen.
- Jul 2025Series A$7.5M
- Jul 2024Grant (prize money)$500K
- Sep 2023Seed$7.8M
#6
Series B · Seattle, Washington · founded 2015 · 21 employees$60.7Mraised▾
Manufacturer of modular smart lighting systems and related accessories. The company provides smart switches, dimmers, plugs, and simple switches, including motion sensor, nightlight, timer, and ceiling fan controllers. It also offers whole-home solutions, backplates, and faceplates. The company's lighting systems allow users to personalize lighting based on lifestyle.
- Jun 2024Series B$3.4M
- Oct 2022Series B$13.4M
- Mar 2021Series B$12.5M
- May 2020Series B$751.1K
#7
Series B · Seattle, Washington · founded 2019 · 34 employees$32.8Mraised▾
Provider of SaaS-driven inspection management services for professionals and homeowners. Solutions are provided for inspectors, real estate professionals, and home buyers. Users can book home inspections by providing the address or the location of the house.
- Sep 2024Series B$15.5M
- Jul 2023Series A$5.8M
- Nov 2021Series A$11.4M
- Aug 2020Seed$150K
#8
Series A · Seattle, Washington · founded 2015 · 30 employees$10.8Mraised▾
Provider of wireless charging solutions for industrial robots. Their solution includes a development kit hardware for wireless charging, coupled with a wireless battery management system and fleet-level power management software. They have developed a proprietary Adaptive Wireless charging technology that provides a greater range of up to three times the diameter of the transmitting coil and efficiency. The product is currently available as a development kit which enables it to be integrated into robotic projects.
- Dec 2024Series A$2.7M
- May 2022Series A$2.1M
- Aug 2019Series A$5.7M
- Aug 2018Seed$530K
#9
Public · Seattle, Washington · founded 2013 · 1800 employees$718.3Mraised▾
Provides software & service to home improvement industries. It provides an inspection support network, home inspection software, an online marketplace to book professional movers to pack, load, and haul their goods, roofing software, concierge service & more.
- Apr 2023Post IPO$333.3M
- Sep 2021Post IPO$385M
#10
Series B · Seattle, Washington · founded 2011 · 52 employees$67.7Mraised▾
Manufacturer of electric outboard motors and marine propulsion systems. The company focuses on designing and producing electric motor and battery solutions that replace traditional gas outboards for boats. It serves recreational and commercial marine markets with systems emphasizing quiet operation, low maintenance, and environmental impact reduction.
- Apr 2024Series B$5.1M
- Apr 2022Series B$14.9M
- Nov 2021Series A—
- Dec 2020Series A$37.5M
#11
Public · Seattle, Washington · founded 2008 · 16 employees$1.2Mraised▾
Provider of combustion efficiency enhancement technology solutions. The company offers Duplex and Electrodynamic Combustion Control platform technologies that enhance the performance of combustion systems in a broad range of markets, including the chemical, petrochemical, refinery, power, and commercial boiler industries. Additionally, it offers retrofit strategies for superior emissions control and improved performance during combustion.
- Jan 2025Grant (prize money)$400K
- Jun 2024Post IPO$4.3M
- Apr 2024Post IPO$5M
- Jun 2022Grant (prize money)$1.9M
#12
Series D · Seattle, Washington · founded 2007 · 542 employees$329Mraised▾
Rad Power Bikes is a developer of electric bicycles. It provides utility, all-terrain, city, folding, and adventure bicycles with features like puncture-resistant tires, integrated brake lights, direct-drive hub motors, rear racks, twist-grip throttles, and mechanical disc brakes.
- Oct 2021Series D$154M
- Feb 2021Series C$150M
- Feb 2020Angel$25M
- Mar 2019Angel—
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.