BREEAM best practice specification – On-site electrical generation

  • Created:
  • Reference: KBCN1605

In GN25, the BREEAM best practice specification includes an allowance for LZC technologies represented as a proxy, by the inclusion of roof-mounted photovoltaic panels. An allowance for on-site electrical generation should be the lesser of either:

  • 5.3% x Gross Internal Area x 120 kWh/m2
  • 50% x roof area x 120 kWh/m2

In all cases, the BREEAM best practice specification must include PV as stated, regardless of whether the actual building has PV specified.