John Field, MA CEng MCIBSE MEI - Director, Power Efficiency Ltd

John Field is Director responsible for energy and carbon management at Power Efficiency Ltd, a consultancy providing energy cost and carbon reduction services to major groups in the commercial sector and the property industry - Power Efficiency is a leading UK provider of Carbon Reduction Commitment and Energy Performance Certification services. John is on the Council of the Chartered Institution of Building Services Engineers and their Low Carbon Consultants Steering Group. He is author of the national guide which provides building energy benchmarks used for all Display Energy Certificates in England and Wales.