Best Energy Efficiency Tech Companies in Washington, United States
The 45 best Energy Efficiency Tech companies in Washington, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Porch Group.
Our analysis of 50 Energy Efficiency Tech companies
$7.8b in tracked funding; 86% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy Efficiency Tech companies in Washington
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Porch Group Provides software & service to home improvement industries | $718M | 40 mo ago | Public | Matt Ehrlichman Founder | 2013 | Cart FunctionalitySquarespace CommerceSquarespace+13 | — | — |
| 2 | Deako Manufacturer of modular smart lighting systems and related accessories | $61M | 25 mo ago | Series B | — | 2015 | Cart FunctionalityWordPressMySQL+47 | 3 patents Smart building energy management with networked occupancy prediction and load control | 1 launch |
| 3 | Optimum Energy SaaS-driven HVAC optimization software for commercial spaces | $41M | 117 mo ago | Acquired | Larry Stapleton CEO & President | 2005 | WordPressApple iCloud MailMicrosoft 365+28 | 75 patents Energy-efficient HVAC control, predictive free cooling, and building-grid integration systems. | 5 job openings |
| 4 | Inspectify Provider of SaaS-driven inspection management services for professionals and homeowners | $33M | 22 mo ago | Series B | Josh Jensen Co-Founder & CEO | 2019 | Cart FunctionalityRubyTrix+33 | — | 1 launch |
| 5 | Powerit Solutions Demand response solutions | $26M | 147 mo ago | Acquired | Kevin Klustner CEO & Board Director | 2006 | — | 4 patents Smart grid demand response and automated peak load control with mobile charging integration. | — |
| 6 | Allumia IoT and AI-driven energy management solutions | $10M | 53 mo ago | Series A | Quintin Barnes Co-Founder & VP | 2013 | — | — | 1 partnership |
| 7 | Optio3 IoT based web platform to monitor energy consumption in commercial buildings | $6M | 75 mo ago | Acqui-Hired | — | 2016 | — | — | — |
| 8 | FlexCharging Provider of electric vehicle charging solutions | $6M | 46 mo ago | Series A | Brian Grunkemeyer Founder & CEO | 2017 | — | 18 patents Real-time EV charging control and demand‑response scheduling for smart grid integration. | — |
| 9 | Lagotek Wireless Home Automation | $5M | 199 mo ago | Deadpooled | Eugene Luskin Founder & CEO2 | 2005 | — | 10 patents Wireless distributed electrical automation and networking for residential and commercial power systems | — |
| 10 | Buildpulse SaaS-driven analytics solutions for buildings | $3M | 99 mo ago | Acqui-Hired | — | 2013 | — | 8 patents Automated sensor discovery, classification, and airflow control for building HVAC automation systems. | — |
| 11 | Optimum Energy Online platform offering HVAC management solutions | $1M | 190 mo ago | Seed | — | 2006 | — | 75 patents Patents concentrated in mechanical & energy engineering | — |
| 12 | Ario Healthy lighting solutions mimicking natural light for better health and well-being | $1M | 118 mo ago | Series A | — | 2015 | — | — | — |
| 13 | Cielo WiGle Smart climate control solutions for mini-split and central HVAC systems | $750K | 111 mo ago | Acquired | — | 2014 | WordPressMySQLPHP+23 | 20 patents Smart HVAC thermostat control and automated wiring detection for ductless and conventional systems | — |
| 14 | Octant Innovations Provider of HVAC automation systems | $315K | 128 mo ago | Seed | Robb Andrade Co-Founder & Managing Partner | 2013 | — | — | — |
| 15 | LumiSands Develop silicon nano-materials to replace REE phosphors in LEDs | $180K | 163 mo ago | Deadpooled | Chang Ching Tu Founder & CEO | 2013 | — | — | — |
Top 12 Energy Efficiency Tech companies in Washington
#1
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
#2
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
#3
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
#4
Series A · Seattle, Washington · founded 2013 · 37 employees$10Mraised▾
IoT and AI-driven energy management solutions. Services offered include project funding, design, installation, and maintenance on a pay-as-you-save basis where a part of the savings incurred is to be given as a payment for the system installation and management. Services offered are inclusive of preliminary audits and post-installation metering to measure the savings incurred in real time, which is achieved via the installation of revenue-grade electric meters.
- Mar 2022Conventional Debt$40M
- Feb 2022Series A$7.5M
- Dec 2019Series A$2.4M
- Feb 2019Grant (prize money)$450K
#5
Series A · Redmond, Washington · founded 2017 · 15 employees$6Mraised▾
Provider of electric vehicle charging solutions. It provides telematics data and managed charging platform which is ready to help users to manage EVs to save money and reduce carbon emissions.
- Sep 2022Series A$5.9M
- Mar 2022Seed$50K
#6
Acquired · Seattle, Washington · founded 2005 · 47 employees$40.9Mraised▾
SaaS-driven HVAC optimization software for commercial spaces. It provides data-driven cooling and heating optimization solutions for enterprise facilities. It provides three products which are, OptiCx a platform for predictive free cooling, LOOP a system-level optimization of centrifugal chilled water plants, OptiCx for chiller diagnostics.
- Nov 2016Series C$3M
- Aug 2015Series C$10.2M
- Aug 2014Series B$385.4K
- Aug 2013Series B—
#7
Acquired · Seattle, Washington · founded 2006 · 22 employees$26.2Mraised▾
Powerit solutions provides web interface platform to connect Utility, Distributions with customer for demand management. Their products include Spara DM ,that makes adjustment for demand reduction in connected loads, Spara Hub which send the data into cloud which can be accessed at remote location, Spara Demand Diagnostics, an analytical tool that allows its partners and customers to determine potential demand management savings.
- May 2014Series C$1M
- Jul 2013Series C$7.1M
- Mar 2011Series B$5M
- May 2009Series B$6M
#8
Acqui-Hired · Seattle, Washington · founded 2016 · 15 employees$6.4Mraised▾
Optio3 helps building managers to monitor and manage connected devices installed in their facilities, including thermostats, light switches and heating and air-conditioning systems. Their IoT based web platform integrates all kind of IoT devices from different manufacturers for intelligent control and monitoring in commercial facilities. Currently, Optio3 is testing its technology in a private beta with colleges, hotels and other buildings in the Greater Seattle and Bay Area. The company hopes to open a wider beta trial in early 2017.
- May 2020Series A$570K
- Jul 2018Series A$3.8M
- Oct 2016Angel$2M
#9
Acqui-Hired · Seattle, Washington · founded 2013 · 17 employees$2.6Mraised▾
SaaS-driven analytics solutions for buildings. Provides a platform to extract insights out of the data generated by buildings. The company's solutions consist of hardware that is integrated with current automation solutions in a building. The hardware transfer data to the cloud.
- May 2018Seed$755.4K
- Nov 2016Seed$1.8M
- Aug 2016Seed—
- Nov 2014Seed$35K
#10
Deadpooled · Bellevue, Washington · founded 2005$5.1Mraised▾
Lagotek was a privately held company specializing in home automation that developed home intelligence platform (HIP) technology. It was founded in 2005 by four former Microsoft employees. Lagotek developed patent pending product, a mixture of wireless hardware and software for home automation.
- Jan 2010Series A$5.1M
#11
Series A · Seattle, Washington · founded 2015 · 3 employees$1Mraised▾
Healthy lighting solutions mimicking natural light for better health and well-being. The company focuses on developing and providing advanced lighting technology designed to enhance health and improve daily life. Their core product is an innovative lamp that automatically adjusts its light spectrum to mimic natural sunlight, promoting energy during the day and relaxation in the evening. This technology aims to support the body's natural circadian rhythms, leading to improved sleep, mood, and overall wellness. They are committed to bringing healthy light to the world through research and product development, offering solutions for residential and hospitality environments. The company uses sensors and smart controls to deliver personalized lighting experiences, focusing on energy efficiency and user convenience.
- Sep 2016Series A$1M
#12
Acquired · Redmond, Washington · founded 2014 · 67 employees$750Kraised▾
Smart climate control solutions for mini-split and central HVAC systems. The company provides innovative and sustainable smart air conditioning solutions, bringing effortless climate control to everyday life. They are revolutionizing home climate control by creating smarter solutions for a better tomorrow. Their team works cohesively to deliver the best in technology, offering exceptional customer support. They provide smart climate control solutions for ducted and ductless HVAC systems, prioritizing energy savings without compromising comfort. Their products are designed to create a mindful and better home climate, offering features like usage monitoring, scheduling, and geofencing. The company focuses on optimizing energy efficiency through intelligent switching between heating systems and coordinated automation for multiple units. They offer a user-friendly app for easy temperature adjustment, energy monitoring, and scheduling, aiming to provide ultimate home climate control with no subscription fees. They are committed to preserving the planet by providing energy-saving solutions, reducing reliance on fossil fuels.
- May 2017Series A$250K
- Apr 2016Series A—
- 2015Seed$500K
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Energy Efficiency Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
What Washington researches in energy efficiency
- Washington State University13
- George Washington University6
- University of Washington6
- Washington University in St. Louis4
- Washington State University Vancouver3