Biomass Boiler ROI Calculator
Enter installation cost, fuel savings, running costs and any grant.
Payback period
β
Enter values above
Net annual benefit
β
Net cost after grant
β
Return over the period
β
Total net saving
β
Saving as % of installed cost
β
Worked example
With the default inputs shown below, this calculator returns the following results:
| Input | Value |
|---|---|
| Installed cost ($) | 25000 |
| Annual fuel saving ($) | 6000 |
| Annual maintenance ($) | 400 |
| Annual feedstock cost ($) | 800 |
| Grant or incentive ($) | 5000 |
| Years to evaluate | 15 |
| Result | Value |
|---|---|
| Payback period | 4.2 years |
| Net annual benefit | $4,800 |
| Net cost after grant | $20,000 |
| Return over the period | 260.00% |
| Total net saving | $72,000 |
| Saving as % of installed cost | 24.00% |
Values shown are produced by this page in your browser; change any input to update them.
How to use the Biomass Boiler ROI Calculator
- Installed cost ($) β default 25000
- Annual fuel saving ($) β default 6000
- Annual maintenance ($) β default 400
- Annual feedstock cost ($) β default 800
- Grant or incentive ($) β default 5000
- Years to evaluate β default 15
- Press Calculate to update the results instantly.
Frequently asked questions
Domestic installations typically take 7β12 years on fuel savings alone, and 4β7 years with a renewable heat incentive or grant. Commercial systems with high heat demand pay back faster.
Wood pellet prices fluctuate with demand and are usually quoted per tonne. Enter your actual annual spend rather than a per-kWh rate so the model reflects real purchasing.
A grant reduces the capital to recover, so it shortens the payback period directly. Enter the net amount you actually receive, after any conditions attached.