Original sentence: A separate building to the east provides power and heat to the visitor centre, this uses a combination of solar thermal panels, photovoltaic cells and a biomass boiler.To the south is a two-storey covered yard with a timber roof structure, used for the rearing of farm animals
Edited sentence: A separate building to the east provides power and heat to the visitor centre, using a combined system of a biomass boiler, solar thermal panels and photovoltaic cells.To the south is a two-storey covered yard with a spectacular timber roof structure, used to rear farm animals