Free calculator
Peak-price battery savings
How much of Xcel’s 5–9 pm on-peak usage a battery can cover on time-of-use rates, using your own rates.
Peak kWh covered
1,980/yr
100% of your on-peak use
On-peak price
27.0¢
per kWh, modeled
Peak-shift savings
$315/yr
arbitrage only
Battery installed
$19,000
before the 10% CO credit
Peak shifting alone rarely pays for a battery — the arithmetic above shows why most Colorado buyers justify batteries on backup value, utility programs (like Xcel’s Renewable Battery Connect — terms change; verify), or pairing with solar. Enter your own rates from your bill; the 2.7× ratio is reported, not verified.
Model solar + battery togetherGet honest numbers for your roof
Our Colorado crew looks up your utility’s current rules, models your roof, and tells you straight — including when solar or a battery won’t pay off.