Home Batteries · Published 2026-08-04
Idaho vs Washington: Where a Home Battery Makes More Sense
Home Batteries in Idaho ($14,000) vs Washington ($14,500) — a 4% gap between neighbors, from July 2026 data.
Idaho and Washington share a border, but for a home battery installation the numbers diverge: Idaho averages $14,000 (rank #17 of 50) and Washington averages $14,500 (rank #37) — a 4% gap.
| Idaho | Washington | |
|---|---|---|
| Typical system, installed | $14,000 | $14,500 |
| Electricity rate | 10.2¢/kWh | 10.2¢/kWh |
| Time-of-use rate spread | 5.0¢/kWh | 6.0¢/kWh |
| Typical outage hours/year | 4 | 5 |
| Typical state incentive | $0 | $0 |
Idaho in context
Idaho lands in the affordable middle of the pack at #17 of 50, averaging $14,000 — about 3% below the national average.
Washington in context
Washington sits in the pricier half of the country at #37 of 50, averaging $14,500 — about 1% above the national average.
Full local breakdowns: Idaho · Washington.
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