Standby Generator Cost Calculator
Last updated: October 15, 2026
Estimate standby generator installation cost including equipment, labor, transfer switch, fuel connection, site work, permits and maintenance.
Starting figures illustrate this model. Enter your own measurements, quoted costs and applicable terms; this page does not retrieve live prices or provider rates.
Estimated net standby generator cost
—
- Gross project cost: —
- Electrical and fuel connection: —
- First-year maintenance: —
- Contingency and rebates: —
On this page
Quick summary: Estimate standby generator installation cost including equipment, labor, transfer switch, fuel connection, site work, permits and maintenance.
Read the complete guide
Updated reference sections in this guide are in English.
What this calculator estimates
Estimate standby generator installation cost including equipment, labor, transfer switch, fuel connection, site work, permits and maintenance.
How to use it
Enter Generator equipment cost ($); Installation labor ($); Transfer switch and electrical work ($); Gas or propane connection ($); Pad, permits and inspections ($); First-year maintenance and testing ($); Rebates or credits ($); Contingency (%). Select Calculate to update the results.
How the calculation works
Equipment, labor, transfer switch, fuel connection, site work and maintenance are added. Contingency is applied and rebates are subtracted.
Worked example: starting scenario
| Generator equipment cost ($) | 9500 |
|---|---|
| Installation labor ($) | 4200 |
| Transfer switch and electrical work ($) | 2600 |
| Gas or propane connection ($) | 1800 |
| Pad, permits and inspections ($) | 1200 |
| First-year maintenance and testing ($) | 450 |
| Rebates or credits ($) | 0 |
| Contingency (%) | 8 |
| Estimated net standby generator cost | $21,330.00 |
|---|---|
| Gross project cost | $21,330.00 |
| Electrical and fuel connection | $4,400.00 |
| First-year maintenance | $450.00 |
| Contingency and rebates | $1,580.00 |
Important limitations
Generator size, load management, utility coordination, fuel availability, trenching, code, noise rules and electrical service affect actual proposals.