What is the average electricity rate in Castle Rock, Colorado?

The average residential electricity rate in Castle Rock is approximately 16.64¢/kWh per kWh. The average household pays around $100 per month for electricity.

What is the average natural gas bill in Castle Rock?

Natural gas customers in Castle Rock pay an average of $59 per month. The rate is approximately $1.06/therm per therm.

Which electric company serves Castle Rock, Colorado?

Electricity in Castle Rock is distributed by Xcel Energy (Public Service Company of Colorado) and Black Hills Energy. Contact your provider at your local service address to confirm which utility serves your home.

Which gas company serves Castle Rock?

Castle Rock natural gas service is provided by Xcel Energy and Black Hills Energy. Call them directly for new service connections or to report a gas leak.

How do Castle Rock electricity rates compare to Colorado averages?

Castle Rock's electricity rate of 16.64¢/kWh is above the Colorado state average of 16.16¢/kWh. Urban areas often have higher distribution costs.

How do I start or stop utility service in Castle Rock?

To start electric service in Castle Rock, contact Xcel Energy (Public Service Company of Colorado) and Black Hills Energy. For gas service, contact Xcel Energy and Black Hills Energy. You'll typically need a photo ID, your new address, and a move-in date. Service can usually be established within 1-3 business days.

Castle Rock, Colorado Gas & Electricity Rates — Utility Providers & Savings 2026

Gas & Electricity in Castle Rock, Colorado

Castle Rock is a community in Colorado served by Xcel Energy (Public Service Company of Colorado) for electric and Xcel Energy for gas. The area's utility rates reflect Colorado's statewide energy market and the region's dry, sunny, cold mountain winters, mild Front Range climate.

Compared to the Colorado state average of 16.16¢/kWh/kWh, Castle Rock's electricity rate of 16.64¢/kWh is 0.48¢ above the Colorado average. As Colorado has a regulated market, your utility is determined by your address.

Electric Utility in Castle Rock

Xcel Energy (Public Service Company of Colorado)
Black Hills Energy
Holy Cross Energy

Natural Gas Utility in Castle Rock

Xcel Energy
Black Hills Energy
Atmos Energy Colorado

Castle Rock vs Colorado Energy Rates

Metric	Castle Rock	Colorado Average	US Average
Electric Rate (¢/kWh)	16.64¢	16.16¢	16.00¢
Gas Rate ($/therm)	$1.06	$1.01	$1.47
Monthly Electric Bill	$100	$97	$117
Monthly Gas Bill	$59	$56	$73

Energy Assistance Programs for Castle Rock Residents

As a Colorado city, Castle Rock residents can access the following state and local assistance programs:

✅ Colorado LEAP (Low-income Energy Assistance Program)
✅ Xcel Energy's RES Program
✅ Colorado Energy Smart
✅ Black Hills Energy Efficiency Programs

Energy-Saving Tips for Castle Rock Residents

✓ High-altitude solar resources are excellent — Xcel Energy offers Solar*Rewards.
✓ Invest in strong attic insulation (R-49+) for cold mountain winters.
✓ Use a programmable thermostat to manage the large temperature swings common at altitude.
✓ Seal air leaks — dry Colorado air makes gaps in the building envelope very noticeable.
✓ Xcel Energy offers rebates for smart thermostats, insulation, and heat pumps.

FAQ — Gas & Electricity in Castle Rock, Colorado

The average residential electricity rate in Castle Rock is approximately 16.64¢/kWh per kWh. The average household pays around $100 per month for electricity.
Natural gas customers in Castle Rock pay an average of $59 per month. The rate is approximately $1.06/therm per therm.
Electricity in Castle Rock is distributed by Xcel Energy (Public Service Company of Colorado) and Black Hills Energy. Contact your provider at your local service address to confirm which utility serves your home.
Castle Rock natural gas service is provided by Xcel Energy and Black Hills Energy. Call them directly for new service connections or to report a gas leak.
Castle Rock's electricity rate of 16.64¢/kWh is above the Colorado state average of 16.16¢/kWh. Urban areas often have higher distribution costs.
To start electric service in Castle Rock, contact Xcel Energy (Public Service Company of Colorado) and Black Hills Energy. For gas service, contact Xcel Energy and Black Hills Energy. You'll typically need a photo ID, your new address, and a move-in date. Service can usually be established within 1-3 business days.