IES Lead Energy Assessor Register

ESOS LogoThe IES holds a register of professionals able to act as Energy Savings Opportunity Scheme (ESOS) Lead Assessors.

What is ESOS?
The UK Government introduced the Energy Savings Opportunity Scheme (ESOS) in response to the EU Energy Efficiency Directive (2012/27/EU). ESOS is a mandatory energy assessment scheme for organisations in the UK that meet the qualification criteria. Further information about the ESOS scheme can be found in the DECC Guide to ESOS (pdf). Companies that qualify need to appoint a Lead Assessor from an approved professional body register to undertake an energy audit and ESOS assessment.

How can I join the register of IES Lead Assessor?
Workshops are held on an ad hoc basis. Contact the IES Office to register your interest.

Useful external links
ESOS Guidance (pdf) | ESOS Website | ESOS Compliance Notification | Approaches to ESOS audits

List of approved IES Lead Energy Assessors

Name Telephone Email Personal Statement
Iain Hossack 
MIEnvSc CEnv
07988 877 205 A PhD in sustainability decision-support and a Chartered Environmentalist, with a full 360 degree environmental and sustainability experience, translating to effective resilience and efficient support for you. Significant sector experience including housing, oil & gas, food & drink, transport, infrastructure, retail, planning and festivals. Arguably his best talents would be within the hard-to-reach estimates of energy use and related opportunities for improvement.
Jerome Nessi 
MIEnvSc CEnv 
07817 305 985 More than 17 years’ experience within industry in the energy, oil, gas and environment sectors.  Areas of expertise include
energy and environmental efficiencies, decentralised energy (combined heat and power plant, district heating and cooling scheme) including water cycle and waste management. Looked at the bigger picture inside energy intensive industries to come up with recommendations offering sustainable and financial benefits without compromising the production lines.  Diplomatic attitude and used to
working with different cultures as well as with a large number of colleagues.
07584 582 578 Experienced in energy and environmental auditing in all industry sectors (and with multinational organisations), Building Energy Audits, Transport Audits, Carbon Footprint Appraisals, ISO 50001, ISO 14001.


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