Energy storage ancillary products

Does energy storage need ancillary services?

3. With the increased penetration of renewables in the grid, the need for ancillary services has also increased. As a high-quality regulatory resource, energy storage’s participation in the ancillary services market will help inhibit the rise of ancillary services costs.

Do battery energy storage systems provide ancillary services?

Battery energy storage systems are particularly well-suited to provide Ancillary Services - due to their near-instantaneous ramp rates. However, Ancillary Services aren’t infinite. At any one time, ERCOT only needs a certain volume of each. Brandt looks into when ERCOT’s Ancillary Services will be saturated for BESS.

Why are ancillary services better than energy arbitrage?

This is largely because: Ancillary Services provide a stable, secure revenue stream - relative to Energy arbitrage. Reserve Ancillary Service products tend to require lower cycling rates than Energy arbitrage. Battery energy storage systems are particularly well-suited to provide Ancillary Services - due to their near-instantaneous ramp rates.

Why are ancillary services important?

Ancillary services are essential to prevent blackouts and other system failures, providing stability to energy markets. In energy markets, ancillary services are a key component that helps maintain system reliability.

How are ancillary services regulated?

In the U.S., ancillary services in energy markets are regulated by the Federal Energy Regulatory Commission (FERC), which sets policies to ensure reliable grid operations and fair market participation.

Will battery-dominated ancillary services be saturated?

And the amount of Ancillary Service volume that batteries are competing for. However, we do expect to see saturation happen in battery-dominated Ancillary Services in the next few months. Battery energy storage systems in ERCOT currently earn 90% of their revenues from Ancillary Services.