We are experts in DC-coupled energy storage, building end-to-end battery systems for commercial, industrial and utility customers.
Feston ESS designs and manufactures complete battery energy storage systems: LiFePO4 modules, BMS, power conversion, MPPT and liquid-cooled containers. Because we build every layer, our systems integrate cleanly and get the most out of every solar panel.
Integrated MPPT charges batteries directly from PV, with fewer conversion stages and higher solar utilisation.
Cells, modules, BMS, PCS and thermal systems are designed to work together.
LiFePO4 chemistry, aerosol fire suppression, gas detection and IP67 packs.
A 3 GWh facility in Chennai with automated assembly and laser welding.




Our values
Systems built to run for thousands of cycles in demanding conditions.
Protection engineered in at the cell, module and system levels.
Fewer conversion stages and smarter energy management.
Local design, engineering and manufacturing at scale.