Its rechargeable lithium-ion battery pack provides energy storage for solar self-consumption, load shifting, or off-grid use. The Tesla Energy Gateway controls the operation of the system and allows remote monitoring of energy usage. The system is designed as a modular system where invert- ers and battery racks can be combined up to. Tesla Energy Operations, Inc. that develops, manufactures, sells and installs photovoltaic solar energy generation systems, battery energy storage products and other related products and services to residential, commercial and industrial customers. It includes systems like Powerwall, Powerpack, and Megapack, 2. By using the battery at peak times, when it supplies electricity in parallel with the grid, it will meet the energy demand and reduce the reserved capacity.