How to Reduce Peak Demand Charges With Battery Storage
Ferrius Energy · 2026-04-12 · 5 min read
Demand charges can be a large, often overlooked part of a commercial utility bill. Battery storage is one of the most direct ways to cut them.
What demand charges are
Many commercial utility bills include a demand charge based on your highest spike of power use in a billing period, not just your total energy. A short burst from equipment starting up can set an expensive peak that follows you all month.
How storage helps
A battery performs peak shaving: it discharges during those short, expensive spikes so the grid sees a flatter, lower peak. That directly reduces the demand portion of the bill. Paired with solar, the same system also cuts energy charges and adds resilience.
The savings depend on your load profile, so the battery has to be sized and controlled around your actual peaks to be effective.
Beyond the bill
In Massachusetts, storage that shaves peaks can also earn program payments through ConnectedSolutions, and it keeps critical operations running through outages. One asset, three benefits.
Key takeaway. Demand charges reward flat, predictable load. A correctly sized battery is one of the most direct tools to deliver that.