Who we are

Senior leadership

Trevor Nash

Trevor Nash Consulting Services Manager EMANZ accredited EnergyMasters Auditor

Trevor has over 25 years of energy sector experience, initially with renewable energy and later in energy management.

From his early work as a wind power engineer in the UK, Trevor went on to lead Mercury’s wind development program before moving into energy management consulting. In recent years he has managed energy management programs across multiple sites, carried out in-depth energy audits and helped clients achieve energy savings across refrigeration, process heat, industrial processes and building services.

Trevor has an MBA and Bachelor of Engineering (Mechanical) from the University of Auckland, and is a Chartered Engineer (UK). He is an active member of the Energy Management Association NZ and previously an elected board member on the NZ Wind Energy Association and Auckland Coastguard. He is a regular guest lecturer on the Master of Energy degree at the University of Auckland.

Trevor leads ESP’s consulting service delivery across all customers.

Jeremy Allen

Sales Engineer and Founder

Whilst at one of NZ's largest energy retailers Jeremy recognised large users of energy wanted to better manage their utility costs. More >

Tim Mayson

Operations Manager

Tim has a Mechanical Engineering Degree from AUT and worked at Compac Industries for 10 years rising from Engineer to Operations Manager and a More >

Martin Gummer

Business Development Manager

Martin comes to ESP with over 38 years of private and public sector experience. More >

Leigh Featherstone

Business Development Manager

Senior manager with extensive skills in building and managing sound relationships with people that deliver targets and goals. More >

Trevor Nash

Consulting Services Manager EMANZ accredited EnergyMasters Auditor

Trevor has over 25 years of energy sector experience, initially with renewable energy and later in energy management. More >

Hong Lee

Building Optimisation Manager

Hong brings to ESP 14 years of engineering experience, with 8 years specific experience in the configuring, commissioning, servicing, maintenance and More >

Olivia Winn

Energy Analyst

Olivia brings to our clients an impressive array of educational experience with Coursework in Energy Engineering: Introduction to Sustainable Energy More >

Mannat Choksi

Energy Engineer

Mannat specialises in identifying and implementing energy saving measures for commercial buildings, SMEs, and large industrial sites. More >

Michael (Jun) Xing

Data Scientist

Data scientists are a new breed of analytical data expert who have the technical skills to solve complex problems – and the curiosity to explore what More >

Nan Li

Electrical Engineer

Nan leads ESP’s system integration, ensuring that our monitoring systems work seamlessly for every client, every time. More >

Beryl Wang

Data Analyst

Beryl is in charge of our monthly reporting, tariff negotiations and assists in the day to day data analysis of our client’s data. More >

Board of Directors

Jeremy Allen is the majority shareholder of ESP which he founded in 2001. He has extensive experience in the energy industry with particular understanding of the value of data in business decisions and uses this knowledge to create value for clients.

D'Arcy Quinn is a shareholder and Chairman of ESP. He is also Chair of Biophive Ltd and Lowe Products Ltd, a director of Superior Farm Pet Provisions (USA), Cuthbert Stewart Ltd, Rothford International Ltd and a past director of Interlock Group.

Jim Sherwin is a shareholder of ESP. He Chaired the National Property Trust Board from 2010 until it was corporatised in 2011 and is currently a Trustee of Expressions Art and Entertainment Trust, Chairman of Nees Hardware (Mitre 10 Mega) and Building Supplies Ltd and Preston Corp Ltd, a Director of Cuthbert Stewart Ltd and past Chair of Te Omanga Hospice.

Judith Stewart Judith is the Cuthbert Stewart Limited representative on the ESP board. Judith is also the Chairwomen of the CSL board with over 20 years board experience, and brings a wealth of experience to the ESP board.