COLORADO · STATE REFERENCE
Solar in Colorado
Colorado has 2 regulated electric utilities for residential service. Net-metering rules, REC programs, and incentive structures differ from federal-level rules and from neighboring states. Page-level analyses on this site take each utility and city separately.
Coverage map
The orange-tinted region is the covered metro. Dots mark the anchor cities with full diagnostic pages published. The remaining Colorado cities included in the site are listed in the city directory below.
Utilities covered
Each utility hub covers the current net-metering rider, the billing-cycle treatment of exports, and any state-level incentives layered on top.
- XCEL ENERGY Public Service Company of Colorado (Xcel Energy) → Most of Colorado, including the Denver metro, Boulder, Fort Collins, and the Front Range corridor
- CORE CORE Electric Cooperative → Douglas County including Castle Rock and Parker, plus parts of Adams, Arapahoe, Elbert, Jefferson, Park, and Teller counties
Cities with published research
Each city page walks the same diagnostic: typical production for the local ZIP, current utility rates, the incentive stack, and the conditions under which the math works.
- ARAPAHOE COUNTY · XCEL ENERGY Centennial → 7 kW typical · 10 yr cash payback
- ARAPAHOE COUNTY · XCEL ENERGY Aurora → 7 kW typical · 10 to 11 yr cash payback
- JEFFERSON COUNTY · XCEL ENERGY Lakewood → 7 kW typical · 11 to 12 yr cash payback
- ADAMS COUNTY · XCEL ENERGY Thornton → 7 kW typical · 10 to 11 yr cash payback
- JEFFERSON COUNTY · XCEL ENERGY Arvada → 7 kW typical · 11 to 12 yr cash payback
- ADAMS COUNTY · XCEL ENERGY Westminster → 7 kW typical · 11 yr cash payback
- BOULDER COUNTY · XCEL ENERGY Boulder → 7 kW typical · 12 yr cash payback
- WELD COUNTY · XCEL ENERGY Greeley → 7 kW typical · 11 yr cash payback
- BOULDER COUNTY · XCEL ENERGY Longmont → 7 kW typical · 11 to 12 yr cash payback
- BROOMFIELD COUNTY · XCEL ENERGY Broomfield → 7 kW typical · 11 yr cash payback
- DOUGLAS COUNTY · CORE ELECTRIC COOPERATIVE Castle Rock → 7 kW typical · 10 to 11 yr cash payback
- ADAMS COUNTY · XCEL ENERGY Commerce City → 7 kW typical · 10 to 11 yr cash payback
- DOUGLAS COUNTY · CORE ELECTRIC COOPERATIVE Parker → 7 kW typical · 10 yr cash payback
- ARAPAHOE COUNTY · XCEL ENERGY Littleton → 7 kW typical · 11 yr cash payback
- ADAMS COUNTY · XCEL ENERGY Brighton → 7 kW typical · 10 to 11 yr cash payback
- ADAMS COUNTY · XCEL ENERGY Northglenn → 7 kW typical · 10 to 11 yr cash payback
- JEFFERSON COUNTY · XCEL ENERGY Wheat Ridge → 7 kW typical · 11 to 12 yr cash payback
- ARAPAHOE COUNTY · XCEL ENERGY Englewood → 7 kW typical · 11 to 12 yr cash payback
- BOULDER COUNTY · XCEL ENERGY Louisville → 7 kW typical · 11 to 12 yr cash payback
- BOULDER COUNTY · XCEL ENERGY Lafayette → 7 kW typical · 11 to 12 yr cash payback
- BOULDER COUNTY · XCEL ENERGY Erie → 7 kW typical · 11 to 12 yr cash payback
- BOULDER COUNTY · XCEL ENERGY Superior → 7 kW typical · 11 to 12 yr cash payback
- JEFFERSON COUNTY · XCEL ENERGY Golden → 7 kW typical · 11 to 12 yr cash payback
- ADAMS COUNTY · XCEL ENERGY Federal Heights → 7 kW typical · 11 yr cash payback
Reference articles
Policy explainers and buyer-side diagnostics that apply across the state.
- The Federal Solar Credit in 2026 Section 25D expired December 31, 2025 under Public Law 119-21. What that means for cash and loan installs in 2026, what Section 48E still covers for third-party-owned systems, and how to spot a stale-data quote.
- Xcel Solar*Rewards in 2026 Xcel's Solar*Rewards program combines retail-rate net metering with REC purchase. How the credit and the REC payment stack, what the program-year transition rules are, and how to spot a quote that miscounts the math.
- How to Read a Solar Quote A line-by-line walkthrough of a typical residential proposal: system sizing, $/W versus cash price, dealer-fee detection, production estimate methodology, warranty terms, and the questions a quote rarely answers without being asked.
- Solar Quote Questions Worth Asking The questions that make a solar quote easier to judge. P50 versus P90 production estimates, panel-level monitoring access, UCC-1 lien language in financed deals, embedded dealer fees, and what the FTC Holder Rule actually does when an installer fails.