National Energy Study Two

SAP in the real world: how people use energy in the home.

A 500+ home study evaluating real energy use over the period of the 2014/15 winter.

The study provided useful insights including:

  • understanding the relationship between SAP/RdSAp and how people actually use energy in the home
  • interesting insight into the interaction between various demographic, technical and social factors that affect energy use
  • questioning the energy efficiency of combi boilers
    the surprising impacts of draughts – an issue not captured by EPC assessments

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