Company Database
Top Energy Companies
The most valuable private energy and sustainability companies, ranked by their latest post-money valuation.
21 companies · Updated September 29, 2026
| Company | Sector | Stage | Valuation | Latest Funding | Total Funding | Headcount | Momentum | Location | Website | Business Model | Customer Profile |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AI, Data & Cloud Infrastructure | Series F | $30.9B | $3.9B (Sep 2026) | $6.39B | 1,190 | Denver, Colorado | www.crusoe.ai/ | B2B | Usage-Based SaaS, Hardware + Subscription, Services & Consulting | ||
| Energy & Sustainability | Series G | $15.5B | $465M (Jun 2026) | $1.49B | 390 | Everett, Washington | www.helionenergy.com/ | B2B | Services & Consulting | ||
| Real Estate & PropTech | Early Funding | $13.2B | $300M (Jul 2026) | $852.5M | 30 | San Francisco, California | www.livable.com/ | B2B | Subscription SaaS, Services & Consulting | ||
| Energy & Sustainability | Series D | $13B | $1B (Aug 2026) | $2.27B | 450 | Austin, Texas | www.basepowercompany.com/ | B2C | Usage-Based SaaS, Hardware Sales, Subscription SaaS | ||
| Energy & Sustainability | Series B | $10.68B | $14.5M (Dec 2025) | $4.52B | 72 | Huzhou | www.leapting.com/ | B2B | Hardware Sales, Services & Consulting | ||
| AI, Data & Cloud Infrastructure | Strategic | $10.5B | $2B (Aug 2026) | $3.51B | 5 | Singapore | www.smc.co/ | B2B | Usage-Based SaaS, Services & Consulting | ||
| AI, Data & Cloud Infrastructure | Early Funding | $10B | (Jul 2026) | $500M | 51 | The Woodlands, Texas | www.lancium.com/ | B2B | Services & Consulting, Usage-Based SaaS | ||
| Consumer & Commerce | Series H | $7B | $500M (Nov 2021) | $1.68B | 206 | Redwood City, California | www.impossiblefoods.com/ | B2C | Hardware Sales | ||
| Energy & Sustainability | Series E | $6B | $425M (Oct 2025) | $2.24B | 762 | Carson City, Nevada | www.redwoodmaterials.com/ | B2B | Hardware Sales, Services & Consulting | ||
| Energy & Sustainability | Series B | $6B | $1B (Aug 2026) | $1.49B | 128 | El Segundo, California | www.valaratomics.com/ | B2B | Government Contracts, Data as a Service, Hardware Sales | ||
| Energy & Sustainability | Series A | $6B | $700M (May 2026) | $700M | 67 | San Jose, California | www.hark.com/ | B2B | Subscription SaaS, Hardware + Subscription, Services & Consulting | ||
| Consumer & Commerce | Series E | $5.7B | $510M (Jan 2022) | $1.02B | 759 | Paris, Île-de-France | www.backmarket.com/en-us | B2C | Marketplace Commission, Subscription SaaS | ||
| Frontier & Industrial Tech | Growth Equity | $5.5B | $1.6B (Jun 2026) | $5.43B | 651 | Stockholm | www.stegra.com/en | B2B | Hardware Sales, Services & Consulting, Data as a Service | ||
| Energy & Sustainability | Private Placement | $5.48B | $101.83M (Dec 2023) | $1.18B | 5 | Shanghai | www.batterotech.com | B2B | Hardware Sales | ||
| Energy & Sustainability | Strategic | $5B | $1.75B (Jul 2026) | $1.75B | 19 | Houston, Texas | www.joulent.com/ | B2B | Hardware + Subscription, Services & Consulting, Usage-Based SaaS | ||
| Frontier & Industrial Tech | Series B | $5B | $100M (Dec 2025) | $142M | 55 | San Leandro, California | www.f.energy/ | B2B | Services & Consulting, Government Contracts | ||
| Energy & Sustainability | VC Round | $5B | $1B (Dec 2021) | $2.91B | 925 | Devens, Massachusetts | www.cfs.energy/ | B2B | Revenue Share, Services & Consulting, Hardware Sales | ||
| Energy & Sustainability | Series B Extension | $5B | $30M (Jun 2026) | $200M | 407 | London | www.fuseenergy.com/ | B2C | Usage-Based SaaS, Subscription SaaS | ||
| Energy & Sustainability | Debt | $4.4B | (Oct 2011) | $90M | 15 | Austin, Texas | www.brighamexploration.com/ | B2B | Services & Consulting, Data as a Service | ||
| Energy & Sustainability | Grant | $4B | $10M (Oct 2024) | $910M | 182 | Fremont, California | www.pacificfusion.com/ | B2B | Services & Consulting | ||
| Energy & Sustainability | Early Funding | $4B | $568M (Jun 2026) | $631.95M | 2 | Williamsville, New York | www.starktech.com/ | B2B | Services & Consulting, Hardware + Subscription, Hardware Sales, Government Contracts |
Companies are classified into this sector based on Caplight sector and vertical tagging, then ranked by most recent post-money valuation.