Ian Byrne


Ian Byrne is a chartered accountant and chartered environmentalist seeking to bring an analytical approach to the assessment of sustainable energy and rigour to calculating energy and carbon savings, while explaining energy efficiency and climate change in terms that anyone can understand, avoiding technical jargon.   Ian is currently developing a consultancy focusing on energy and carbon management for SMEs, NGOs and the public sector, having previously spent 28 years at the National Energy Foundation as its Deputy and Chief Executive. 

An expert on international standardization, Ian chairs the BSI Shadow Committee on GHG Mitigation and Adaptation, and at ISO level co-convenes the working group drafting ISO 50009 “Energy Management in Multiple Organizations” having previously led the one that published ISO 50047 "Determination of Energy Savings in Organizations".  

Past achievements including being Treasurer of the Society for the Environment (SocEnv), managing the Secretariat for the Green Energy Supply Certification Scheme, evolving technical standards for the Energy Efficiency Accreditation Scheme (precursor to the Carbon Trust Standard), setting up the Energy Saving Trust's network of Energy Efficiency Advice Centres, and sitting on the Institute of Chartered Accountants' Sustainability Committee as well as the Boards of several Energy Agencies.

Ian was appointed to the IES Council as its Treasurer in July 2019.

Joining the IES helps your personal and professional development. Whatever stage you are at in your career, the IES has membership services that will help you gain recognition and progress to the next level. Members come from all areas of the environment sector, wherever jobs are underpinned by sound science. Your membership grade within the IES depends on what stage you are at in your career.

Membership provides an extensive package of benefits including:

  • 4 journals, the environmental SCIENTIST, per annum
  • Regional and national events
  • Contribute to our policy and guidance work
  • Chance to apply for Chartered Scientist, Chartered Environmentalist and Registered Environmental Technician
  • Recognition of professional status
  • CPD recording tools
  • Use of post-nominal letters
  • Access to our exclusive monthly webinars
  • Regular reports on the environmental science sector
  • Discount on meeting room rates at our central London office