Analysis of the applicability of the UK National Calculation Methodology to energy efficiency finance of non-domestic buildings: A case study approach

Abstract

This paper provides a brief overview of the Green Deal, the UK Government flagship programme to finance energy efficiency improvements in buildings at no upfront cost, and the modifications made in the National Calculation Methodology (NCM) to make it applicable to the Green Deal for non-domestic sector. A case study approach is used to assess whether NCM can model a number of energy efficiency measures that are qualified for the Green Deal with reasonable accuracy. It is suggested that CIBSE TM22 tool could be used to overcome methodological issues related to calculation of auxiliary energy use in the NCM. A framework for calibrating thermal models and analysing the uncertainty associated with estimated savings in energy finance projects is also introduced and applied to the case study