Learning Center
CORE Electric Cooperative solar: how it differs from Xcel
CORE Electric serves large portions of Douglas County and parts of Parker and Elizabeth. Its solar program has meaningful differences from Xcel.
Published July 1, 2026

## Different utility, different rules
CORE Electric Cooperative is a member-owned electric cooperative, not an investor-owned utility. Its solar interconnection application, net-metering rules, and any distributed-generation program details are set by CORE, not by the Colorado PUC in the same way Xcel's are.
## What that means for you
Do not assume Xcel numbers apply. Ask your installer explicitly whether the proposal is modeled on CORE's current tariff, and ask for the specific document reference.
## Common CORE service areas
Much of Parker, unincorporated Douglas County, Elizabeth, Castle Rock outskirts, and parts of Highlands Ranch are on CORE. Neighboring streets can be on Xcel. Your bill is the source of truth.
## Documents to request in writing
- Current interconnection application form and processing timeline
- Net-metering credit calculation and any monthly service charges
- Any system-size limits relative to your account
## Verify, don't assume
CORE's program details can change. Confirm the current version with CORE directly before making financial decisions.
Ready to see how this applies to your home?
Last reviewed July 2026. This page provides general educational information and is not a proposal, quote, or offer of service.