Pellet Storage Volume Calculator

Enter your estimated annual heat demand and choose how much fuel you want to keep in reserve. The tool works out the pellet volume, suggests bunker dimensions, and checks whether a typical bulk delivery would fit. All assumptions below are defaults only, edit them to match your own boiler and supplier figures.

Your heat demand and storage target

Estimated annual heat demand (kWh)

Full season (100% of annual demand)

Half season (50% of annual demand)

Specified number of weeks

Number of weeks (1 to 52)

Assumptions (editable)

Pellet bulk density (kg per m3)

Calorific value (kWh per kg)

Boiler efficiency (%)

These are typical indicative figures only. Check your pellet supplier's data sheet and your boiler's own efficiency rating before relying on the result.

Pellet Storage Volume Calculator

Results