# Stem

> Stem supplies software, edge controls and services for developing, monitoring and operating solar, battery storage and hybrid energy assets. Its PowerTrack suite links equipment data, plant controls and financial optimization; the company shifted its strategy away from battery resale in 2024.

- **Founded:** 2009
- **Headquarters:** Houston, United States
- **Founders:** Brian Thompson (Co-founder; former executive), Stacey Reineccius (Co-founder)
- **Products:** PowerTrack Software, PowerTrack EMS, PowerTrack Optimizer, PowerTrack SCADA, PowerTrack PPC
- **Notable:** PowerTrack EMS won The smarter E AWARD 2026 in Smart Integrated Energy., Reported five consecutive quarters of positive adjusted EBITDA through Q2 2026; this is a non-GAAP measure., Q2 2026 operating assets under management: 38.3 GW solar and 1.8 GWh storage.

## Products & services

- **PowerTrack Software** — Hardware-agnostic portfolio monitoring, analytics, reporting, diagnostics and control.
- **PowerTrack EMS** — Integrated on-site and cloud controls for solar, battery and hybrid projects; introduced in 2025.
- **PowerTrack Optimizer** — Formerly Athena; forecasting, dispatch and economic optimization supporting managed services.
- **PowerTrack SCADA** — Local and remote monitoring and control, alarms, redundancy and data recovery.
- **PowerTrack PPC** — Power plant controller supporting grid requirements and multiple operating modes.
- **PowerTrack Logger** — Industrial edge gateway collecting equipment data for the cloud platform.
- **PowerTrack Sage** — AI assistant within PowerTrack for interpreting site data and diagnosing issues; beta trials in late 2025 and available on the current product page.
- **Managed and Professional Services** — Revenue modeling, design, procurement support, commissioning, market operations and 24/7 remote monitoring.
- **AIONA** — Dedicated AI services offering announced June 17, 2026.

## Achievements

- PowerTrack EMS won The smarter E AWARD 2026 in Smart Integrated Energy.
- Reported five consecutive quarters of positive adjusted EBITDA through Q2 2026; this is a non-GAAP measure.
- Q2 2026 operating assets under management: 38.3 GW solar and 1.8 GWh storage.

## Latest updates

- **2026-08** — Q2 results: 41% GAAP gross margin and US$14.4 million net loss; ARR US$62.4 million.
- **2026-08** — Solarmarkt and Pannonwatt selected PowerTrack EMS for two Hungarian solar retrofits adding 160 MWh of batteries in total; operation was expected in September, not verified as completed.
- **2026-07** — Stem announced the smarter E AWARD win for PowerTrack EMS.
- **2026-06** — AIONA AI services offering launched.
- **2026-05** — PowerTrack EMS selected for Granja Solar, a 135 MW solar site being retrofitted with 420 MWh of storage.
- **2026-04** — Nuvation Energy co-marketing agreement announced.

## Links

- Website: https://www.stem.com/
- LinkedIn: https://www.linkedin.com/company/stem-inc/
- Twitter/X: https://twitter.com/stempowered
- Facebook: https://facebook.com/Stem-Inc-263101217108092/

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Profile page: https://yespress.io/stem
Published by YesPress — https://yespress.io
Last updated: 2026-10-01