Pentadyne Power's second-generation VSS+DC flywheel-based clean energy storage systems have earned an Underwriters Laboratories (UL) listing. The UL listing granted--according to the UL website--is based on "basic standards used to investigate products in this category…ANSI/UL 508, 'Industrial Control Equipment,' UL 1004, 'Electric Motors,' and UL 1248, 'Engine-Generator Assemblies for Use in Recreational Vehicles.'"
Pentadyne flywheel systems supplement or replace hazardous lead-acid battery arrays used with uninterruptible power supply (UPS) systems. Chemical battery banks require extensive, costly and lengthy permitting processes due to their corrosive materials, fire hazards, toxic fluids and explosive gas emissions.
Pentadyne's flywheel power system improves UPS reliability by completely replacing or greatly extending the life of lead-acid batteries commonly used in most UPS configurations. In comparison to batteries, the VSS+DC improves UPS reliability while eliminating costly ventilation and cooling requirements as well as reducing lifecycle cost and maintenance or replacement needs. With a much smaller footprint than an equivalently sized battery system, the VSS+DC saves valuable floor space in the data center leading to higher computing density.