Giving batteries a second life
Every year, tens of thousands of tons of rechargeable batteries are scrapped — even though most cells are still perfectly usable. Spare Energy develops technology that safely redeploys these batteries in energy storage applications, reducing waste and supporting a circular economy.
Key statistics
28,000+
Tons of batteries shredded in the EU yearly
90%
Of shredded batteries still usable
15 kg
CO₂ saved per kg of battery cells re-used
LFP
Major chemistries supported — universal battery reuse technology
Why Spare Energy?
We turn end-of-life batteries into safe, distributed energy storage — creating value from waste while reducing environmental impact.
Circular Economy
We extend the service life of used batteries instead of sending them to be shredded — keeping valuable resources in use for longer.
Safety & Compliance
Our systems continuously monitor every deployed battery. Full conformance with EU Battery Regulation 2023/1542.
Battery Lifecycle Data
Track the health and location of your battery stock throughout its extended service life with our cloud platform.
Measurable Sustainability
Every redeployed battery avoids the CO₂ emissions of manufacturing a new one — on average 15 kg CO₂ per kg of cells re-used.
How It Works
A simple and safe technology to give batteries a second life.
Offstream
Used batteries are safely, simply and efficiently diverted from shredding.
Redeploy
Our hardware and software safely enables a second life in energy storage applications.
Monitor
Every battery is individually tracked and monitored throughout its extended service life.
About Spare Energy
Spare Energy was founded in Winterthur, Switzerland, with a clear mission: to create technology that allows used batteries to be safely redeployed in energy storage applications.
Every year, over 28,000 tons of rechargeable batteries are shredded in Europe alone. The vast majority of the cells in these batteries still have significant capacity remaining — they are discarded simply because a small fraction of cells in each pack have failed. We see this as an enormous opportunity to reduce waste, lower carbon emissions, and build a more circular economy.
Our experienced founding team brings together decades of expertise in hardware product development, battery systems engineering, and scaling technology businesses. We work closely with leading equipment manufacturers to ensure their end-of-life batteries find safe, productive second lives — while maintaining full regulatory compliance and providing transparent lifecycle data.
We believe that the energy transition requires not only new batteries, but better stewardship of the ones we have already made. Your data stays yours — we never share or sell personal information to third parties.
Our Team
Erik Wilhelm
CEO & Co-Founder
Nico Studer
Co-Founder
Michael Kölbl
Co-Founder
Ready to give batteries a second life?
Get in touch to learn how Spare Energy can help your organisation manage end-of-life batteries sustainably.
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