Building on engineering roots that trace back to 1977 in Berlin, skytron and Wuseltronik combined to form skytron energy. It went on to install monitoring and control systems at more than 1,000 plants worldwide, with over 7 GWp of capacity.
AlsoEnergy was founded in the U.S. to give solar asset owners better visibility into how their systems perform. That same year, Locus Energy launched with a focus on monitoring distributed and residential solar.
Stem, Inc. was founded with a vision to transform how energy consumption is managed. By analyzing how utilities and developers use and are charged for energy, Stem pioneered energy storage solutions.
After merging with DECK Monitoring in 2013 and with skytron energy, Locus Energy, and Draker in 2018, AlsoEnergy brought its global sales, support, product, and operations together on one platform: PowerTrack. Its teams now operate as AlsoEnergy GmbH in Europe and AlsoEnergy Japan K.K. in Asia.
Stem became the first pure-play energy storage company to go public in the U.S.
Stem acquired AlsoEnergy, combining Stem’s AI-driven storage optimization with AlsoEnergy’s solar monitoring and controls, PowerTrack, and more than 45 years of engineering heritage. The result was a one-stop solar + storage solution.
Stem launched a refined strategy centered on software and services rather than battery hardware resale.
Stem is a global leader in software and services that help customers plan, deploy, and operate clean energy assets, with more than 200,000 sites monitored across 60+ countries and six continents.
Stem's PowerTrack Platform is the integrated technology stack that makes confident clean energy management possible: a single, proven solution where assets are commissioned faster, operations are managed with precision, and every data point compounds into smarter decisions. Built on nearly two decades of real operational data across the full clean energy value chain, it has earned the trust of energy leaders globally, not as software alone, but as intelligence paired with the operational know-how of standing up sites and keeping them running for years after go-live.
PowerTrack doesn't just monitor your portfolio, it delivers clarity at every stage of the project lifecycle. From the edge to the cloud, from a single site to a global fleet, PowerTrack is how Stem's intelligence shows up in practice.
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Stem's footprint spans North America, EMEA, APAC, and Latin America. With offices around the world, including the U.S., Germany, India, and Japan, we combine local market expertise with a truly global operating model.
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At Stem, sustainability is core to how we operate. From our software-first approach that reduces environmental impact to our commitment to ethical governance and a values-based culture, we're not just participating in the energy transition, we're reimagining it. Guided by our Environmental, Social, and Governance framework and aligned with standards like TCFD, SASB, and the UN SDGs, we share our progress every year in our Sustainability Report.
Learn More About Our Sustainability EffortsStem is guided by an experienced leadership team spanning software, energy operations, finance, and global sales, alongside a Board of Directors with deep expertise in clean energy investing, corporate finance, and public company governance. Together, they bring decades of experience to guide Stem's mission of transforming how energy professionals manage, operate, and optimize clean energy.
