Just when you deploy energy storage into extreme heat, cold, salt spray, or shock, you must evaluate thermal runaway and catastrophic failure risks, choose robust materials and redundant controls, and implement rigorous testing and monitoring so your system achieves reliable, safe performance under harsh conditions. Types of Energy Storage Systems Mechanical Pumped hydro (100 MW-GW, 70-85% RTE), flywheels (kW-MW, ms response), CAES (adiabatic designs