Black Hills Energy Overview
Black Hills Corporation operates as Black Hills Energy across multiple states in the Mountain West and Great Plains regions. As a mid-sized utility serving both urban and rural areas, solar policies and economics vary significantly depending on which state you're in.
Service Territory by State
Black Hills Energy operates under different regulatory frameworks in each state:
Colorado
- Territory: Pueblo and southern Colorado
- Net metering: Required by state law up to 120% of usage
- Solar resource: Excellent (5.5+ sun hours/day)
- Best economics: Strong state support
Wyoming
- Territory: Cheyenne and eastern Wyoming
- Net metering: Limited requirements
- Solar resource: Good (5+ sun hours/day)
- Challenge: Less state solar policy support
Montana
- Territory: Various communities
- Net metering: Available for systems up to 50 kW
- Solar resource: Moderate (4.5+ sun hours/day)
- Note: Shorter production season
South Dakota
- Territory: Rapid City and western SD
- Net metering: Voluntary utility programs
- Solar resource: Good (5+ sun hours/day)
- Challenge: Minimal state incentives
Net Metering Comparison
| State | Net Metering | Credit Rate |
|---|---|---|
| Colorado | Required by law | Full retail |
| Wyoming | Utility program | Varies |
| Montana | Required (up to 50 kW) | Retail rate |
| South Dakota | Voluntary | Avoided cost |
Rates & Economics
Black Hills Energy rates are moderate compared to coastal utilities, which extends payback periods but still makes solar viable for long-term savings:
| System | Gross Cost | Annual Savings | Payback |
|---|---|---|---|
| 5 kW | $14,000-16,000 | $750-950/yr | 15-18 years |
| 7 kW | $19,500-22,500 | $1,050-1,300/yr | 14-17 years |
| 10 kW | $28,000-32,000 | $1,500-1,900/yr | 14-18 years |
Federal Tax Credit (2026)
The residential federal tax credit (25D) for cash or loan purchases expired at the end of 2025. However, PPA/Lease options still benefit from the 30% credit through 2027 - the solar company claims it and passes savings to you.
| Purchase Type | Federal Credit | Notes |
|---|---|---|
| Cash/Loan | None (25D expired) | No homeowner credit available |
| PPA/Lease | 30% (through 2027) | Company claims, you benefit from lower rates |
State Incentives
- Colorado: Property tax exemption, some local rebates
- Wyoming: Property tax exemption available
- Montana: Property tax exemption, state tax credit (check current status)
- South Dakota: Property tax exemption
The Bottom Line
Black Hills Energy solar economics vary significantly by state. Colorado customers have the best combination of policies and solar resource. Wyoming and South Dakota face longer payback periods due to limited state support. Montana falls in between.
With 14-18 year payback periods, solar in Black Hills territory is a long-term investment rather than a quick win. If you're planning to stay in your home for 15+ years and want to lock in energy costs, it can make sense. For shorter time horizons, a PPA or lease (which still gets the federal credit) may be more attractive.
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