Red flags in a battery or generator quote
You can spot most bad quotes before you sign.
- Still promising the 30% federal tax credit. The IRS says the 25D battery credit does not apply to installs completed after 12/31/2025. Details →
- "No permit needed" for panel or gas work. Unpermitted work can create problems with insurance, inspections, and resale.
- No license number, or one that doesn't match your state licensing board's records.
- Offers to connect a generator without transfer equipment. NEC 702.5 requires listed transfer or interconnection equipment (UpCodes). CPSC calls backfeeding "extremely dangerous" (CPSC).
- A one-line price with no itemization, or big deposits due up front.
- Same-day pressure ("price expires tonight").
- A price far outside published ranges. Batteries run about $1,130–$1,159/kWh installed (EnergySage, as of 2026-10-25). Standby generators run $8,000–$16,000 (Generac, as of 2026-10-26). Ask what's driving the difference.
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FAQ
Is it a red flag if an installer mentions the federal battery tax credit?
In 2026, yes, if they say it applies to a new install. The IRS says 25D does not apply to installations completed after 12/31/2025.
Can an installer skip the permit?
Panel and gas work generally require permits. Check with your local building department.
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