Modular energy storage for high-power charging
Coming soon in 2026.
eTank is our mobile battery energy storage system (BESS), built to enable fast charging in locations where the electricity grid is limited. When paired with ePump, it forms a powerful and flexible high-power charging system that can be deployed almost anywhere.
A combined eTank/ePump setup can deliver 200-400 kW of charging power per point without major grid upgrades. Fast enough to charge an electric truck in under an hour.
An investment that pays for itself
eTank unlocks new revenue streams and lowers operating costs. It enables participation in energy and reserve markets and shifts loads to avoid peak pricing.
Charge the battery when electricity is cheap and use it during peak hours. By reducing energy costs and adding revenue streams you can significantly improve the economics of charging.
Modular, mobile, and ecosystem-ready
Like all Stone products, eTank is surface-installed with no digging or groundwork. Place it, connect it, and the system is ready to use.
eTank integrates seamlessly into Stone’s wider energy ecosystem. It can store local renewable production, provide backup power, and connect to any OCPP-compatible backend.
Launching in 2026
More details and specifications will be released closer to launch. Contact us and we’ll keep you updated on eTank’s development and availability.