As part of a major energy-saving programme, Sabien’s M2G boiler load optimisation controls have been installed at 28 Ministry of Defence sites across south east England

Sabien’s M2G units were selected by PriDE, the joint venture between Interserve Defence Ltd and SSE Contracting that manages the Defence Infrastructure Organisation’s South East Regional Prime Contract. Installation of over 840 M2Gs was one of a number of measures carried out by PriDE under a Defence Infrastructure Organisation initiative to invest £105m to improve the efficiency of the Defence estate under the three year Energy Spend to Save programme. Other measures included upgrading or replacing building management systems and upgrading lighting.

PriDE’s Eunice Mabey said: “To qualify for funding under the Spend to Save programme we proposed a portfolio of energy-saving measures, which needed to deliver an overall payback within 1.8 years to help achieve the £70m p.a. savings target. We identified the M2G as a cost-effective way to introduce more savings on boiler energy consumption over and above those achieved by upgrading the building management systems.”

Following installation of the M2G units, a measurement and verification exercise was carried out during October and November 2013 on selected sites, using methodology in line with the International Performance Measurement and Verification Protocol (IPMVP).

“The measurement and verification of savings was very important as we needed to demonstrate that the projected savings had been achieved. We worked closely with Sabien in analysing the data that had been collected from the sites,” Eunice Mabey added.

Sabien also worked closely with PriDE on the management of the project, addressing the challenges posed by a diverse estate with many different types of building and high levels of security. The boilers fitted with M2Gs were of varying ages and designs and included both oil and gas-fired models. The project, including all installations, was completed in less than six months.