Understanding Supply and Delivery Charges

Your Eversource electric bill is made up of two charges—supply and delivery. As a regulated utility, all of our rates are reviewed and approved by state regulators.

What's The Difference Between Supply and Delivery?

The supply charge is the cost of electricity you use. We purchase electricity from suppliers on your behalf and pass the cost directly to you, no profit added.

The delivery charge includes components for operating, maintaining and upgrading the electric system, funding critical customer services and programs, taxes and other state and federally-mandated charges. 

Click or tap to expand


We purchase electricity from suppliers that generate electricity at a power plant or generating station. We pass that cost on to customers with no profit added. 

See the latest supply rates

What is a supplier?

Suppliers generate electricity at a power plant or generating station. We purchase electricity from suppliers and it is transmitted to the electric grid.

All customers have the option of choosing Eversource or another energy supplier to obtain energy on their behalf.

How we determine your rate

The supply rate is based on the current market price of electricity. This price changes twice each year—on February 1 and August 1 —as demand for energy increases or decreases.

How you're charged

We track your usage in kilowatt hours (kWh). This is a measure of energy use over time. We then multiply your usage by the supply rate to determine your supply charge.

Supply rate x kilowatt hours = supply charge


The delivery charge supports electric grid maintenance and upgrades, funds critical customer services and programs and includes mandated public policy fees that we are required to pass through to customers.

See the latest delivery rates

Usage impacts your delivery charge

Some of these charges are calculated based on the amount of energy you use. We multiply your usage (measured in kilowatt hours) by the rate to determine your charge. Using less energy can lower these charges. 

Delivery rate components

There are several components that make up the delivery charge on your bill.

Operating and maintaining the electric grid

Power is generated, transmitted and distributed to customers through the electric grid. These charges help us operate and maintain core components—the transmission and distribution systems.

  • Transmission Charge – The transmission system includes the large high-voltage power lines that deliver electricity over large distances from power plants to Eversource’s distribution system. This charge is for operating and maintaining this system.
  • Distribution Charge (per kWh) – The distribution system includes utility poles and wires in and around your city or town that deliver electricity to your home or business. This charge is for operating and maintaining this system.

Customer programs and services

These charges fund critical customer services.

  • Customer Charge – This fixed monthly fee covers costs related to billing, meter services, customer service and personnel. 

System investments and upgrades

  • Stranded Cost Recovery Charge - This charge helps fund the recovery of Eversource’s past investment costs, including expenses incurred through mandated power contracts and other long-term investments and obligations.

Taxes and surcharges

These items are not controlled by Eversource.

  • Systems Benefits Charge  – This charge funds energy efficiency programs for all customers as well as assistance programs, such as the Energy Assistance Program and Neighbor Helping Neighbor, for residential customers within certain income guidelines.