
Ultracapacitors for Grid
Ultracapacitors are integrated into advanced power electronics systems, including E‑STATCOMs, to absorb or inject power for frequency and voltage regulation, provide virtual inertia, and support overall grid reliability and power quality over short‑duration operating windows.

Field-Proven Solutions for Grid Stabilization and Renewables

E-STATCOM (Enhanced Static Synchronus Compensator)
- Advanced power electronics infrastructure used to manage grid frequency and voltage by absorbing or injecting power
- E‑STATCOMs are “enhanced” relative to STATCOMs because they incorporate energy storage in the form of ultracapacitors
- Renewable energy sources do not inherently provide rotational inertia that traditional power plants do, leading to frequency fluctuations and instability
- E‑STATCOMs provide virtual inertia to ensure overall grid reliability and power quality, filling the role a rotating turbine would in a traditional power plant
- Ultracapacitors high power to low cost ratio and long cycle life make them the ideal energy storage choice for this application.

Renewable‑Driven Grid Stabilization
- High renewable penetration increases the need for fast‑response grid stabilization
- Ultracapacitors are used within E‑STATCOM systems to provide virtual inertia and support grid reliability and power quality

Dynamic Grid Frequency & Voltage Regulation
Ultracapacitors are used in grid applications for:
- Frequency regulation
- Voltage regulation
- Power quality support
Why Ultracapacitors for Modern Vehicles

Very High Power Density
- Very high power density (Watts per liter)
- High specific power (Watts per kilogram)

Low Internal Resistance
- Very efficient charge and discharge (typically 95–98% round‑trip)
- High current capability

Long Life
- DC Life: up to 15 years
- Cycle Life: up to 1M cycles

Safety
- Can be maintained and shipped in a totally discharged state
- No thermal “runaway”

Broad Operating Temperature Range
- Operating temperature range from -40°C to 65°C (85°C)


