RatesUp to date · Jan 15, 2026
Supply Charges
The portion of your electric bill covering the actual cost of generating or procuring electricity — the energy commodity itself. This is the portion solar offsets directly.
Why It Matters
In deregulated states, you can shop for a different electricity supplier while keeping your delivery utility. Solar replaces some or all of your supply charges.
Related Topics
Related Terms
Delivery Charges
The portion of your electric bill covering the cost of maintaining poles, wires, transformers, and the local distribution system that physically delivers electricity to your home.
Deregulation (Energy)
The unbundling of electricity generation from transmission and distribution, allowing consumers to choose their electricity supplier in competitive markets. ~17 states have some form of deregulation.