First, find the line that moved
An Xcel residential statement in Colorado usually splits into an electric section (kWh used, rate plan, on-peak and off-peak usage if you’re on time-of-use) and a natural-gas section (therms). Compare this month to the same month last year, not to last month. January versus July tells you about the season; January versus last January tells you about your house.
If therms drove the increase, the fixes are weatherization, a furnace tune-up, or eventually a heat pump. Solar only makes sense in that story if you plan to electrify heating later. If kWh or the per-kWh price drove it, keep reading.
Why the electric side has been climbing
Two things changed the math for many Xcel households. Since November 1, 2025, Xcel’s residential time-of-use plan charges an on-peak rate from 5 to 9 pm on non-holiday weekdays, all year, and that on-peak rate runs about 2.7 times the off-peak rate. Time-of-use is the default for residential customers with smart meters, so many people were moved onto it without changing anything about how they live.
Base rates also move with Xcel rate cases approved by the Colorado Public Utilities Commission. We won’t quote a percentage here because the numbers shift with each case — your bill’s rate schedule line and the PUC docket are the sources to check.
Where solar helps, and where it doesn’t
A rooftop system in Xcel territory is net metered: surplus daytime production spins your meter backward, and under Colorado’s net-metering statute credits carry forward rather than expiring. That lets summer surplus cover part of your winter usage. For a household whose electric use is steady year-round, a system sized to annual usage can offset most of the electric energy charges, though fixed monthly charges remain.
What solar can’t do on its own is cover the 5–9 pm window in winter, when the sun is down by the time on-peak starts. That’s the job a battery does. And with the 30% federal homeowner credit gone for systems completed after 12/31/2025, a cash purchase pays back more slowly than older articles suggest, so we show you cash, loan, and lease/PPA numbers side by side.
When solar probably isn’t your answer
If your roof faces north with heavy tree cover, if you expect to move within a few years and would buy with cash, or if your electric use is already low and the spike was gas, we’ll tell you so. A switch to Xcel’s flat-rate plan (you can opt out of time-of-use) or shifting dishwasher and laundry loads before 5 pm may save you more per dollar spent than any equipment.
What to do next
- 1Pull the same month from last year and compare electric kWh, electric dollars, and gas therms separately.
- 2Check which electric rate plan is printed on your bill and how much of your usage falls in the 5–9 pm on-peak window.
- 3If gas drove the spike, start with weatherization or a furnace check before considering solar.
- 4If electric drove it, run the solar savings calculator with 12 months of kWh, and the peak-shift calculator if on-peak usage is heavy.
- 5Ask us for a quote that shows cash, loan, and lease/PPA side by side, with ranges rather than a single savings number.
FAQ
Questions we hear
Why is my Xcel bill so much higher in winter than summer?
For most Front Range homes it’s heating. If you heat with gas, the therms section of the bill swells in December through February. If you heat electrically, kWh climbs instead. Look at the two sections separately before deciding what to fix.
Will solar panels lower the gas part of my Xcel bill?
No. Solar produces electricity only. It lowers the gas side only if you later replace gas appliances with electric ones, such as a heat pump or heat-pump water heater, and size the solar for that added load.
Can I get off Xcel’s time-of-use plan?
Yes — as of our research in September 2026, time-of-use is the default for smart-meter residential customers but you can opt out to a flat rate. Whether that saves you money depends on how much of your usage lands between 5 and 9 pm on weekdays. Verify current options with Xcel.
Does solar still pay off in Xcel territory without the federal tax credit?
It can, but more slowly than it did in 2025. Payback depends on your usage, roof, and how you pay. Leases and PPAs, where the owner can still claim a federal credit on systems placed in service by the end of 2027, are often the lower-upfront path now. We show ranges and tell you when it doesn’t pencil out.
Should I wait for my bill to settle before deciding?
Gathering 12 months of usage is useful regardless — it’s what we size a system from. There’s no reason to rush a decision on a single bad month, and anyone pressuring you to sign the same day is a red flag.