Section 5.2 of the London Plan states that each major development proposal should submit a detailed energy assessment. Some local authorities also require this assessment to be carried out for smaller developments. A major development has 10no residential units or more and /or is larger than 1000m2 for non-domestic premises.
The purpose of an energy assessment is to demonstrate that climate change mitigation measures, including energy efficiency, energy conservation and renewable energy systems are integral to the scheme’s design. These should be implemented following the Mayor’s energy hierarchy.
Schemes received by the Mayor up until 30 September 2016 should achieve a 35% CO2 emissions reduction from Part L 2013 for both residential and commercial development.
Schemes received by the Mayor on or after the 1 st October 2016- Zero Carbon for residential development and 35% below Part L 2013 for commercial development.