Stem has raised $172.0M in total across 6 funding rounds.
Stem's investors include Princeville Capital, Wind Ventures, Better Tomorrow Ventures, C2 Investment, Cedar Capital Group, Coughdrop Capital, Footwork, Fuel Capital, Seven Seven Six, SNR, Thrive Capital, Elad Gil.
Stem, Inc. (NYSE: STEM) is a San Francisco-based technology company specializing in AI-driven software and services for clean energy asset management, enabling customers to plan, deploy, and operate solar, energy storage, and hybrid systems.[1][2][4] It serves over 16,000 global customers—including energy traders, utilities, asset owners, developers, and grid operators—across commercial, industrial, and utility sectors, solving challenges in energy optimization, cost reduction, grid stability, and decarbonization through its flagship PowerTrack platform (formerly Athena), which leverages real-time AI analytics on markets, weather, and demand.[3][4][5] With 569 employees and management of 30+ GW solar and 1.5+ GWh storage assets in 55+ countries, Stem demonstrates strong growth momentum via software-centric shifts, international expansion, and a focus on lifecycle services.[2][4][5]
Founded in 2009, Stem emerged amid the early boom in solar and renewable energy, initially focusing on intelligent energy storage solutions to address inefficiencies in clean energy deployment.[2][3] The company's roots trace back to pioneers in solar and storage, evolving over nearly 20 years into a global leader by integrating AI software with hardware and services.[1][4] Key leadership includes CEO Arun Narayanan, who recently outlined a software-first strategy, and CTO Albert Hofeldt, Ph.D., driving R&D in energy tech.[2][3] Pivotal moments include scaling to 16,000 customers, rebranding Athena to PowerTrack, and recent SEC filings signaling employee stock plans and earnings growth amid a strategic pivot.[2][4]
Stem stands out in the clean energy space through:
Stem rides the global energy transition wave, fueled by decarbonization mandates, rising renewables penetration, and AI's role in grid modernization amid volatile energy markets.[1][3][5] Its timing aligns with surging demand for storage to balance intermittent solar/wind, supported by policy incentives and falling battery costs, positioning Stem to capture a slice of the multi-trillion-dollar clean energy market.[3] By optimizing 30+ GW assets, Stem influences the ecosystem through data-driven insights that enhance utility-scale projects, reduce emissions, and enable utilities/load-serving entities to integrate renewables seamlessly, accelerating adoption worldwide.[4][5]
Stem's trajectory points to accelerated software revenue growth via PowerTrack expansions, deeper international penetration (e.g., Europe, Asia), and AI enhancements for emerging trends like vehicle-to-grid and data center electrification.[3][4] Upcoming catalysts include the February 2026 earnings and ongoing SEC momentum, potentially improving its negative P/E through operational efficiencies.[2][3] As AI meets energy intelligence, Stem could evolve from niche optimizer to ecosystem enabler, amplifying its impact in a net-zero world—building on its foundational promise to turn clean energy potential into performance.[1][5]
Stem has raised $172.0M across 6 funding rounds. Most recently, it raised $80.0M Series D in January 2018.
| Date | Round | Lead Investors | Other Investors |
|---|---|---|---|
| Jan 1, 2018 | $80.0M Series D | Princeville Capital, Wind Ventures | |
| Oct 1, 2017 | $28.0M Series B | Better Tomorrow Ventures, C2 Investment, Cedar Capital Group, Coughdrop Capital, Footwork, Fuel Capital, Seven Seven Six, SNR, Thrive Capital, Elad Gil, Leore Avidar | |
| Apr 1, 2015 | $12.0M Series C | King River Capital, Princeville Capital | |
| Jan 1, 2015 | $27.0M Series B | Princeville Capital | |
| Dec 1, 2013 | $15.0M Series B | King River Capital | |
| Apr 1, 2012 | $10.0M Series A | King River Capital |
