£13,677pa in RHI payments for Wood Pellet District Heating Scheme at Wootton Hall in North Lincolnshire
Ecoliving installed one of the early biomass boilers to qualify for the non-domestic RHI in 2012/13. Wootton Hall was in need of a new heating system to replace an ageing oil boiler with parts difficult to find and maintenance costs ever more difficult to justify.
Given the potential return of investment generated through fuel cost savings and qualification for the Renewable Heat Incentive scheme under the criteria of multiple residential dwellings made the choice to go for a biomass boiler, an obvious one.
District Heating Scheme Technical Design
Ecoliving supplied and installed an ETA Hack 130kW wood chip / pellet boiler, delivering renewable heat to 3 separate properties and an annex. The boiler receives fuel from a pellet feed auger, installed in block built 30m³ pellet silo, which then heats two 1100L hot water storage tanks. The district heating system consists of 45m of pre-insulated underground pipework between the boiler room and hall basement. Other components include the flue, primary district circulation pumps, expansion vessels, flat plate heat exchanger, and heating metres, allowing the temperature to be regulated within each building.
Heating Cost Savings and Return on Investment:
Anticipated annual gain:
- £2,700 Fuel Saving
- £13,677 Renewable Heat Incentive
- £16,377 Total financial gain per annum
- Just over 4 years (£68,000 ÷ £16,377)
Further benefit after system payback (excluding indexation):