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EDENenergy can swap out individual battery modules without shutting down the rest of the unit.
Photo Credit: iStock
A startup based in Germany is turning 112 used e-scooter batteries into a system that stores solar energy for businesses. Testing found the batteries had lost only about 10% of their strength on average.
EDENenergy has sold its first commercially available unit, a 70-kilowatt-hour energy-storage system aimed at businesses that already generate their own solar power but have no way to bank it for later. A solar inverter is built into the unit as well, according to InsideEVs.
EDENenergy operates with just three founders and three additional staffers who work part time. The founders, who previously worked as researchers at Fraunhofer Institute for Solar Energy Systems, had expected the secondhand batteries to keep only about 80% of their former power.
“In mid-October, we delivered the first storage system to a customer, which was an important milestone for our young company,” said Florian Bierwirth, one of the EDENenergy co-founders. “With this storage size, we initially aim to target medium-sized companies in the region that have a photovoltaic system but do not yet have a storage solution.”
Each year, millions of batteries from e-bikes and e-scooters are discarded despite still having usable capacity, according to InsideEVs.
Inside the storage unit, the batteries don’t face the shaking and temperature swings they dealt with on the road. That absence gives them an easier environment to work in.
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EDENenergy can swap out individual battery modules without shutting down the rest of the unit. The company said it keeps track of every module remotely and can make a swap without turning the whole unit off.
For a business facing substantial losses if its power goes out, keeping the system running during a replacement is particularly useful.
By swapping in new modules whenever old ones wear out, the company can hold the system’s total capacity at 70 kilowatt-hours for years to come, according to InsideEVs.
EDENenergy’s next goal is getting its system to handle battery types from several different companies.
“To do this, the connector interfaces, battery management system, and communication protocols must be adapted for each new battery,” Bierwirth explained to InsideEVs. “There’s a particularly wide range of options when it comes to e-bikes.”
EDENenergy’s system joins other efforts to reuse old batteries and develop new ways to store electricity.
• Across the U.S., Canada, and Australia, old EV batteries could store solar energy.
• Texas adds 28 MWh of storage using repurposed EV batteries to support its grid.
• A DIY solar owner considered $150 batteries on Facebook as commenters questioned their condition.
• In Germany, a homeowner went fully off-grid with sodium-ion batteries after rejecting indoor lithium.
• Jackery unveiled a 100 kWh home battery in Berlin, expanding beyond portable power.
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