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About the Company 

We are a specialist energy and carbon management company offering independent and integrated solutions to help clients reduce energy costs and cut carbon emissions. Our experienced projects team identify, design, supply, install and commission buildings with targeted energy efficiency solutions including technical and building fabric insulation, LED lighting and controls. 

CHAS accredited contractor, Achilles accredited, SafeContractor approved, ISO14001:2004 accredited, ISO9001 accredited, National Insulation Association member, Constructionline member, CIBSE membership, UK Green Building Council member, The Association for Decentralised Energy member, Low Carbon South West member


Accredited technology groups:

Insulation, Lighting

Areas supplier covers

Map only shows primary address supplier has provided.

Case Study: National Trust Technical Insulation 

Existing Technology: Uninsulated boiler plant rooms, internal and external pipework and other technical components across the Trust’s portfolio of properties was resulting in significant amounts of heat and energy being lost – leading to inflated energy bills.

New Technology: Following free, no obligation surveys and energy savings analysis, technical insulation measures were installed at 30+ National Trust properties including Calke Abbey, Dyrham Park and Montacute House. 

Capital Cost: £63,000

Energy Saving: Total energy savings of over 500,000 kWh per annum

Carbon Saving: Reduction of 100 tonnes of CO2e per annum

Project Payback: 1.25 years

Our ongoing programme of work with The National Trust has helped them to work towards their commitment to reduce their reliance on fossil fuels by 50%, CO2 emissions by 45% and energy use for electricity and heating by 20%.


Working with Sustain allowed us to approach our carbon reduction goals in a considered and professional manner. The survey work was carried out effectively, the quote produced on time and the installation carried out with no problems. Communication was clear throughout the process and when managing a large portfolio of buildings this was extremely valuable.

Malcolm Anderson - Environmental Practices Adviser, National Trust Southwest

Carbon Trust Accredited Suppliers have met or exceeded criteria set by the Carbon Trust designed to examine their capability to deliver thoughtful, well-designed energy efficient and renewable energy systems. As part of the assessment process, the Carbon Trust takes into consideration feedback from client references regarding the suppliers’ performance. Whilst the Carbon Trust has endeavoured to confirm that all suppliers included in the Green Business Directory are of a proven high quality, users of the Green Business Directory enter into contracts directly with Accredited Suppliers to the exclusion of the Carbon Trust, and at their own risk. The Carbon Trust makes no representations regarding, nor does it accept any liability whatsoever in respect of, the performance of any services or the supply of any goods by Accredited Suppliers. Case studies have been written and supplied by Accredited Suppliers. Details should be independently reviewed by prospective customers

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