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This is an install of a 75 kW KWB Pelletfire biomass boiler. The boiler house includes a 10.5 ton pellet store, which is a big bag option, this allows for enhanced quantity within the space. Two 1500 litre thermal stores provide the home with all of its hot water and heating needs. A Greener Alternative decided to site the boiler in an outhouse building, utilising an existing space and cutting down the installation costs. The biomass system is connected to the main house via underground Rahau pipe, this has high insulation properties and minimises heat loss. The pellet store is located in section of the outbuilding adjacent to the boiler house, a hole was formed and an auger fitted to transport the pellets through to the boiler.

Key facts

Project cost: £43,652

RHI payments over 20 years: £201,254

Estimated fuel saving over 20 years: £100,000

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