Backup through a shutoff
Xcel’s wildfire shutoffs in December 2025 and March 2026 lasted 24 to 72 hours or more in affected areas. A single 13.5 kWh Powerwall 3 running essential circuits, recharged by solar each day, can carry many Golden homes through that; heating with electric resistance or running a well pump takes more capacity.
Paying for it in 2026
A Powerwall 3 runs about $19,000 installed for the first unit and $12,000 for each additional; Enphase IQ starts around $17,000 for 10 kWh; SigEnergy starts around $15,500 for 9 kWh. The 10% Colorado credit, state sales-tax exemption, and possibly Xcel’s Battery Connect incentive can reduce the net cost. Verify current terms.
FAQ
Questions we hear
Is Golden’s battery rebate open?
No. The city’s 2026 energy rebates, including battery backup, closed after the program reached its budget.
How many batteries does a Golden home need for a 3-day shutoff?
It depends on your loads and winter sun. Essentials-only homes often manage with one plus solar; whole-home backup usually needs two or more.
Can a battery handle Golden’s cold winters?
The batteries we install are rated for outdoor Colorado conditions or can be placed in a garage; we site them to manufacturer specs.