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Electrical Early data Updated Apr 2026

What homeowners pay for backup generator installation, 12+ kW

Every receipt below is a real 12+ kW job a homeowner paid for, 6 nationwide so far. No contractor estimates, no scraped guides. Size is the biggest price lever on this job, so this slice is the honest comparison.

Built by Connor, a homeowner. Real receipts only. Why this exists →

A 12+ kW backup generator installation typically costs between $4,000 and $13,400, with most homeowners paying around $8,700. According to user-submitted pricing data, the middle 50% of installations fall between $6,350 and $11,050.

The typical range
$6,350 $11,050
Middle 50% · median $8,700
Full reported range $4,000–$13,400 across 6 receipts.
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2 receipts in last 90 days Updated Apr 8, 2026 Help keep this current →
Other sizes

Backup Generator Installation at other sizes

The receipts

Every receipt below is a real homeowner report behind this page.

2 of 6 matching

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$13,400.00
69 days ago
Anonymous
24 kW gas

Just had a Generac 24kW backup generator installed this week in Houston for including installation, pre-made slab, gas line, and wiring in conduit along the house.

$4,000.00
70 days ago
Anonymous
17 kW gas

Installed a 17KW standby generator that runs on natural gas. Total cost was around $4K after installation.

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