Energy storage systems enable our customers to address one or more challenges with the supply of reliable and cost-effective energy. Optimal has the expertise to provide multiple energy & power solutions that address the availability, reliability, cost, and emissions of energy, often simultaneously, using fit-for-purpose, reliable technology. 


Energy Security (Backup Power)
Power Quality
Energy Cost & Demand Management (Arbitrage)
Grid Capacity Augmentation
Spinning Reserve


The products we offer in this landscape can be divided into two categories: Capacitive Energy Storage (CES) and Battery Energy Storage Systems (BESS). Capacitive storage is best suited for rapid energy storage and discharge, whereas battery storage is best suited for longer energy storage use cases. We use proven, class-leading technologies for both. For many applications, these technologies are used in conjunction to provide reliable, long-term energy storage with the ability to deliver rapid power when needed, such as during peak operating hours.


Battery Energy Storage SystemsCapacitive Energy Storage
Charge/Discharge Time
Hours/MinutesMilliseconds/Seconds
Cycle Life
4,000 to 8,000 Cycles (LFP)
500,000 to 1,000,000+ Cycles
Power Density
LowerVery High
Energy DensityHighLow
Operating Temp. Range
0°C to 45°C (optimal)-40°C to 70°C (wide)