Building Control - Building Regulations (Technical)

Building Regulation 25A

Building Regulations 2010

Consideration of High-Efficiency Alternative Energy Systems

Regulation 25A of the Building Regulations requires that, before work starts, the person undertaking the work must carry out an analysis that considers the use of high-efficiency alternative energy systems in the buildings design and must give the local authority notice that this has been undertaken.

Completion of the pro-forma (PDF, 8KB,1 page) overleaf and submission to will satisfy this requirement for new developments on the Isle of Wight.

High-efficiency alternative systems that may be considered if available include, but are not limited to; Decentralised energy supply systems based on energy from renewable sources, Co-generation, District or block heating, Heat pumps.

Whilst it is a requirement for the analysis to be undertaken, this does not mean such systems have to be installed, provided that the Target Emission Rates for the new building can be met in some other way.  There are no direct implications for the design, specification and construction of new buildings. Current standards and guidance applicable to heating and cooling systems are unchanged within the Part L Approved Documents.

The requirement for this notification is to encourage awareness, within the design process, of the benefits of such systems as part of new build development.  This is relevant to systems specified in relation to heating systems and, where mechanical cooling is proposed, mechanical ventilation and air conditioning; and also the use of zero carbon generating technologies which contribute to meeting emissions targets set under carbon dioxide emissions.