The team behind VolDECs

Voluntary Display Energy Certificates (VolDECs) have been developed by a partnership between the National Energy Foundation and Phil Jones of Building Energy Solutions. Our not-for-profit scheme was initially funded by Legal & General Property and was successfully tested on 16 of its major, multi-tenanted office properties.


The National Energy Foundation is an independent, national charity based in Milton Keynes, which has been at the forefront of improving the use of energy in buildings since 1988. It aims to give people, organisations and government the knowledge, support and inspiration they need to understand and improve the use of energy in buildings.

Building Energy Solutions Logo

Building Energy Solutions is an independent energy consultancy with a track record of over 25 years specialising in addressing energy problems in the built environment. BES provides training, research and building/technology troubleshooting across the non-domestic building sector.


Malcolm HaMalcolm Hanna Lo Res - For VolDEC websitenna, Technical Director, National Energy Foundation

“VolDECs’ separate landlord and tenant ratings provide a unique approach in dealing with what was an intractable energy problem and they help people to understand what they can control and improve.”

Malcolm is a carbon and energy management professional with over twenty years’ experience in energy and sustainability across various sectors. He leads the National Energy Foundation’s Technical Team and has broad experience of the opportunities and barriers associated with managing energy across complex organisations and projects. He has particular expertise in developing low-carbon solutions for existing building portfolios and has substantial experience of energy-efficient design, procurement and operations. Malcolm previously spent seven years as Regional Director with AECOM, building the energy and carbon management team. During this period, he helped the Carbon Trust pilot its carbon management programme and developed more than 30 organisational carbon management programmes. Malcolm is also an Evaluator for the Technology Strategy Board’s Building Performance Evaluation Programme and an ESOS Lead Assessor under the Energy Managers Association register.

PhiPhil Jonesl Jones, Senior Energy Consultant, Building Energy Solutions

“VolDECs are a real step-change for commercial buildings that currently don’t use DECs and will help engage people in dealing with the energy performance gap.”

Phil Jones is an independent energy consultant with over 30 years’ experience in the built environment sector. He has spent his career trying to make buildings more energy-efficient and investigating failing buildings. For the last 25 years he has run the independent energy consultancy Building Energy Solutions where he carries out building energy research and training across a wide range of buildings and technologies. Phil is the original author of CIBSE Guide F – Energy Efficiency in Buildings. He also wrote CIBSE TM31 on Building Log Books and CIBSE TM39 on Building Energy Metering. Phil is a leading specialist on energy benchmarking of buildings, he chairs the CIBSE Energy Performance Group and is a member of the CIBSE Benchmarks Steering Group. In 2010, he was involved with UCL in analysing the DEC database for CIBSE.