Income sources for energy storage power stations

How do I evaluate potential revenue streams from energy storage assets?

Evaluating potential revenue streams from flexible assets, such as energy storage systems, is not simple. Investors need to consider the various value pools available to a storage asset, including wholesale, grid services, and capacity markets, as well as the inherent volatility of the prices of each (see sidebar, “Glossary”).

Do investors underestimate the value of energy storage?

While energy storage is already being deployed to support grids across major power markets, new McKinsey analysis suggests investors often underestimate the value of energy storage in their business cases.

What is the source of revenue for many power projects?

For many power projects, a single power purchase agreement provides the source of all revenue for the project. Fixed-price contracts allow a project to generate a relatively predictable and stable amount of revenue, subject to the project meeting technical operating assumptions.

What is the 'value stack' in energy storage?

Owners of batteries, including storage facilities that are co-located with solar or wind projects, derive revenue under multiple contracts and generate multiple layers of revenue or 'value stack.' Developers then seek financing based on anticipated cash flows from all or a portion of the components of this value stack.

Can energy storage projects sell ancillary services?

In many regions, energy storage projects may be able to sell “ancillary services” in addition to energy or capacity either to transmission owners or to regional grid operators. For example, Swinerton’s Mira Loma, California, energy storage project.

What is a battery energy storage project?

A battery energy storage project is a system that serves a variety of purposes for utilities and other consumers of electricity, including backup power, frequency regulation, and balancing electricity supply with demand.