Analysis of high-efficiency alternative systems

Where a building is to be erected, the person carrying out the work shall, before construction begins, undertake an analysis of and give consideration to the use of available high-efficiency alternative systems in the work. Such systems include—(a) decentralised energy supply systems based on energy from renewable sources; (b) cogeneration; (c) district or block heating or cooling, particularly where it is based entirely or partially on energy from renewable sources; and (d) heat pumps. The analysis shall be documented and take into account the technical, environmental and economic feasibility of using high-efficiency alternative systems. It may be carried out for individual buildings or for groups of similar buildings or for common typologies of buildings in the same area, and in so far as it relates to collective heating and cooling systems, may be carried out for all buildings connected to the system in the same area.