Best Energy Tech Companies in District of Columbia, United States
The 34 best Energy Tech companies in District of Columbia, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Arcadia.
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 District of Columbia
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Stage | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Arcadia 🦄 Provider of clean energy data platform and solutions for businesses. 69Tech top 12%News top 14%Funding top 19%Growth top 23% All 11 signals ▾Techtop 12% Newstop 14% Fundingtop 19% Growthtop 23% Moattop 28% Producttop 34% Talenttop 37% Innovationbottom 49% Patentsbottom 48% Globalbottom 48% Marketbottom 38% Tech: 58 technologies across 7/8 capability areas · Cloud: Amazon Alb, Amazon Cloudfront News: 7 BI events in 12 mo (of 187 tracked, 14 types) · +250% YoY rank vs industry peers · Fliar Intelligence Index 69/100 | $554M | 30 mo ago | 2 | Kate Henningsen Co-Founder And Chief Operations Officer | SentryAtlassian StatuspageZendesk+23 | Series D | 11 patents Patents concentrated in health & consumer products | — |
| 2 | Fluence Provider of energy storage products, services, and digital applications for renewables | $125M | 69 mo ago | 1,112 | Julian Nebreda President & CEO | DrupalApple iCloud MailMicrosoft 365+32 | Public | 4 patents Water filtration and desalination technologies for industrial and oilfield water treatment | — |
| 3 | Emerald Developer of a platform optimizing power grids and artificial intelligence infrastructure 50Funding top 25%AI top 30%Global top 45%Talent bottom 49% All 6 signals ▾Fundingtop 25% AItop 30% Globaltop 45% Talentbottom 49% Marketbottom 40% Techbottom 38% Funding: Raised $66.5M across 3 rounds · 3 rounds over 2 yrs (1.5/yr) AI: Classified as an AI company · Product described with: artificial intelligence rank vs industry peers · Fliar Intelligence Index 50/100 | $67M | 8 mo ago | — | Varun Sivaram Founder & CEO | Webflow EcommerceWebflowGSAP+11 | Seed | — | — |
| 4 | Sparkfund Subscription-based energy as a service provider | $50M | 70 mo ago | 62 | Pier LaFarge Founder & CEO | HubSpot CMS HubSalesforceLinkedin Insight Tag+15 | Series C | — | — |
| 5 | Aquicore Provider of SaaS-driven ESG data and analytics platform for the real estate industry | $49M | 74 mo ago | 62 | — | — | Acquired | 3 patents Patents concentrated in computing, sensing & instrumentation | — |
| 6 | BTR Energy Provider of EV telematics data analysis and clean fuel program participation services. | $45M | 58 mo ago | 10 | Jack Barrow CEO | — | Acquired | — | — |
| 7 | SparkMeter Provider of smart metering solutions for energy service delivery and management | $42M | 34 mo ago | 14 14 → 13 (-7%) | Allison Archambault Co-founder | WeeblyMySQLPHP+20 | Series A | 3 patents Patents concentrated in electrical & electronics | — |
| 8 | Cortex AI-driven building energy management solution for commercial spaces | $11M | 65 mo ago | 33 | — | — | Series A | 23 patents Cardiac electrophysiology mapping and impedance sensing for pulsed‑field ablation catheters | — |
| 9 | Pingthings AI-driven platform offering solutions for predictive analytics for managing assets in the utility industry | $4M | 61 mo ago | 31 | Sean Murphy Founder & CEO | BootstrapAmazon Web ServicesLazySizes+13 | Seed | — | — |
| 10 | Rhizome Developer of an AI-powered software platform for climate risk assessment | $4M | 18 mo ago | — | Mishal Thadani CEO | — | Seed | — | — |
| 11 | Nexgrid Smart grid solutions provider optimizing energy efficiency and utility operations | $3M | 144 mo ago | 24 | Costa Apostolakis President & Founder | — | Seed | 5 patents Patents concentrated in electrical & electronics | — |
| 12 | Jasmine Provider of solutions for renewable energy credits | $3M | 10 mo ago | 8 | — | — | Seed | 5 patents Patents concentrated in health & consumer products | — |
| 13 | Redox Fuel cell based energy solution provider | $1M | 109 mo ago | 6 | — | — | Funding Raised | 45 patents Healthcare data exchange platforms enabling interoperable storage, messaging, and workflow automation | — |
| 14 | Torev Motors Manufacturer of motors for electric vehicles | $550K | 29 mo ago | 2 | Rory Brogan Co-Founder & CEO | AstroLenisCloudinary+5 | Seed | — | — |
| 15 | Riide Innovative ebike company offering theft protection and cellular tracking | $172K | 128 mo ago | 17 | Jeff Stefanis Co-Founder & CEO | — | Acquired | — | — |
Top 12 Energy Tech companies in District of Columbia
#1
Seed · Washington, DC, District of Columbia · founded 2024$66.5Mraised▾
Developer of a platform optimizing power grids and artificial intelligence infrastructure. The platform facilitates data centers flexible power demand, transforming them into grid partners. It unlocks capacity on existing grid infrastructure to power artificial intelligence. The platform connects utilities and data centers in real time. It enables data centers to respond to grid signals and orchestrates compute alongside onsite energy. The platform verifies performance, establishing data centers as grid resources.
- Feb 2026Seed$25M
- Jul 2025Seed$34.2M
- Nov 2024Seed$7.3M
#2
Seed · Washington, DC, District of Columbia · founded 2022 · 8 employees$2.6Mraised▾
Provider of solutions for renewable energy credits. It offers a platform to buy and sell climate assets, tokenize, and more.
- Dec 2025Conventional Debt$25M
- Sep 2022Seed$2.5M
- 2022Seed$500K
#3
Arcadia 🦄Series D · Washington, DC, District of Columbia · founded 2014 · 2 employees$554.5Mraised▾
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- Apr 2024Conventional Debt$30M
- Mar 2024Series D$50M
- 2023Series D—
- Dec 2022Series D$128.5M
#4
Seed · Washington, DC, District of Columbia · founded 2022$3.5Mraised▾
Developer of an AI-powered software platform for climate risk assessment. The platform helps electric utilities identify vulnerabilities from climate hazards. It quantifies risk and measures the benefits of asset investments. The software ensures infrastructure and communities are protected against extreme weather threats.
- Apr 2025Seed$9.8M
- Jul 2024Seed$1M
- Oct 2023Seed$2.5M
#5
Series A · Washington, DC, District of Columbia · founded 2013 · 14 employees$41.6Mraised▾
Provider of smart metering solutions for energy service delivery and management. It facilitates sustainable smart metering solutions and business models with sector stakeholders. The organization ensures the continuity of critical infrastructure for high-quality energy services. It works to ensure open collaboration with stakeholders in the sector.
- Nov 2023Series A$5M
- Mar 2022Series A$10M
- 2021Series A—
- Aug 2020Series A$12M
#6
Public · Washington, DC, District of Columbia · founded 2018 · 1112 employees$125Mraised▾
Provider of energy storage products, services, and digital applications for renewables. The company delivers standardized technology to facilitate rapid and cost-effective energy storage deployment. Its offerings include energy storage systems and asset performance management software. The company’s products are designed for industrial applications and can be configured for specific use cases.
- Dec 2020Series D$125M
#7
Series C · Washington, DC, District of Columbia · founded 2013 · 62 employees$49.9Mraised▾
Subscription-based energy as a service provider. It provides subscription-based energy efficient solutions for the commercial and industrial sectors. The technology subscriptions offered by the company include a monthly payment basis provision of energy efficient solutions including HVAC, LED lighting, building control, and other technology. The OpEx payment method provided by the company covers installation, repairs, monitoring, and ongoing service, with no upfront costs. Traditional loans and leases are also provided as financial services.
- Dec 2020Conventional Debt$1.5M
- Oct 2020Conventional Debt$1M
- Apr 2019Series C$16.5M
- Feb 2018Series B$6.9M
#8
Acquired · Washington, DC, District of Columbia · founded 2012 · 62 employees$48.8Mraised▾
Provider of SaaS-driven ESG data and analytics platform for the real estate industry. It offers a platform that connects to energy meters that have already been installed. It also centralizes energy data enabling building owners to monitor energy usage and bill their tenants according to their energy usage. It enables organizations to make decisions that improve staff productivity, reduce energy waste, increase tenant satisfaction, and meet strategic energy goals.
- Jul 2020Series B$14M
- Mar 2019Series B$25.9M
- May 2016Series A$5M
- Oct 2015Grant (prize money)$122.5K
#9
Acquired · Washington, DC, District of Columbia · founded 2015 · 10 employees$45Mraised▾
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- Dec 2021Series A$45M
#10
Seed · Washington, DC, District of Columbia · founded 2022 · 2 employees$550Kraised▾
Manufacturer of motors for electric vehicles. The company is engaged in developing axial flux electric motors for electric vehicles.
- May 2024Seed$525K
- Sep 2023Seed$25K
- Jun 2023Seed$35K
- Dec 2022Seed$75K
#11
Series A · Washington, DC, District of Columbia · founded 2014 · 33 employees$11.1Mraised▾
AI-driven building energy management solution for commercial spaces. It can be used to build management systems and meters to translate unused information into tangible value for buildings and offer energy savings by operating HVAC systems with more precision. It offers a mobile platform to control the building assets from any location and offers charts, demand alerts, and recommendations to operate those assets. The app is available for download on android devices.
- May 2021Series A$6M
- Apr 2018Series A$1.7M
- Jan 2017Series A$3.5M
#12
Seed · Washington, District of Columbia · founded 2014 · 31 employees$4.1Mraised▾
AI-driven platform offering solutions for predictive analytics for managing assets in the utility industry. The platform identifies and mitigates risks from both natural and man-made events such as solar storms and transformer fails that can severely disrupt and damage electrical systems.
- Sep 2021Seed—
- Apr 2020Seed$1.7M
- Apr 2015Seed—
- Jan 2015Seed$1.4M
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.