Battery backup: solar that works after dark
Tesla Powerwall and home battery installation in Las Vegas
Licensed Nevada contractor, NSCB 0032580A. A Simmons has been licensed here since 1991.
Panels stop producing at sunset and shut off in an outage. A battery is what turns a solar array into power you can count on.
Keep the AC, the fridge and the Wi-Fi running
- Whole-home or essential-circuits backup, your call.
- Stores your daytime production for evening use, when NV Energy's rates are highest.
- Retrofits onto solar you already have, from any installer.
- UL 9540 listed equipment, installed to NFPA 855. Battery backup goes through NV Energy's advance review and, in the City of Las Vegas, full plan review; we file both.
- Automatic switchover. No generator to start, no fuel to store.
Most homes pair one Powerwall with 12 to 49 panels and two Powerwalls from 50 panels. We size storage to the circuits you actually want covered, not to the biggest box we can sell.
Plan my outage backupNevada's rate structure is changing. Storage is the hedge.
On NV Energy's time-of-use plan the summer on-peak window is 6:01 to 9 pm, June through September, at $0.469 per kWh against $0.071 off-peak on the schedule effective October 1 2026. Panels are done by 8 in June. A battery moves your afternoon into those hours.
NV Energy's daily demand charge, priced on your highest 15 minutes each day, is scheduled for January 1, 2027 and under appeal. Whether net metering credits can offset it is disputed and the tariff language is not published yet. NV Energy says solar homes in Southern Nevada should expect a small increase; The Nevada Independent put it at about $12 a month. A battery clips the peak that sets it.
Monsoon storms do not schedule themselves: on August 13, 2026, storms cut power to 7,747 customers after twelve straight days of extreme-heat warnings. Backup keeps cooling, refrigeration and medical equipment running. If your original installer is gone, we can still add storage and take over monitoring. See Solar Rescue.
Straight talk on incentives: NV Energy's residential storage rebate has been closed to new applications since June 2023, and the federal residential credit ended for systems completed after December 31, 2025. The 30% federal credit now survives only for a system owned by a company that sells you its power under a power purchase agreement and placed in service by December 31 2027. It belongs to that owner, not to you or to us, and Section 48E(i) denies it on a lease. We are not tax advisers and nothing here is tax advice: we recommend you consult an independent tax professional about your own return. Actual utility rates may go up or down and actual savings may vary.
Where the battery meets your panel
A battery ties into the same main panel as everything else in the house, so a full or undersized panel can come first. Read how a panel upgrade works. We also install EV charger circuits and whole-house surge protection.
Questions people ask before a battery
If you already have panels, start with adding a battery to the system you already own. If you do not, here is how a battery works with no panels on the roof.
Sizing comes next: how much battery a Las Vegas house really needs, and where a battery should live in a Las Vegas summer. If your rate plan matters to the decision, read whether time of use pricing suits a solar home.