Wirral University Teaching Hospital NHS Foundation Trust has appointed UK energy management and combined heat and power (CHP) specialist ENER-G to modernise its energy infrastructure across two acute hospitals, by utilising the Carbon and Energy Fund framework, funding, process and contract.

In a £6.3 million green makeover of Arrowe Park and Clatterbridge Hospitals, ENER-G will design, build and operate new high efficiency, low carbon infrastructure comprising natural gas CHPs, lighting, pumps, chillers, boiler plant and water saving measures. Completion of the installation works will be in late summer 2014.
Wirral hospital
Combined heat and power will be the cornerstone of the energy efficient infrastructure at both hospitals. The systems have been sized to allow for the 10% electrical reduction from demand-side energy improvements, ensuring maximum operational efficiency of the CHP.

At Arrowe Park Hospital, a 1710kWe CHP system – designed and manufactured by ENER-G in the UK – will be installed within the existing boiler house area. The CHP will interface with all the main hospital plant rooms and the existing absorption chillers to maximise the utilisation of the recovered heat from the CHP and provide both heating and cooling. The CHP system will displace up to 70% of the site’s electrical and thermal demands.

At Clatterbridge Hospital, ENER-G will design, install and operate a new energy centre in the old boiler house – containing new, high efficiency boilers and all the equipment to distribute thermal energy across the site. A  770kWe ENER-G containerised CHP unit will also be installed – displacing up to 60% of Clatterbridge’s  electrical and thermal demands.

Utilising the specialist long term funding made available through the Carbon and Energy Fund, the 15-year contract is guaranteed to deliver gross annual cost savings of  £1.2m.  It will also reduce the Trust’s carbon footprint by approximately 6,200 tonnes per year across the two sites. This is equivalent to the environmental benefit of removing 3,900 cars from  the road, or the carbon sequestered annually by 5,082 acres of forest.

By completing  an extensive energy audit of the sites and computer modelling, ENER-G were able to specify the best combination of energy efficient solutions to maximise financial and environmental savings for the Trust. Total projected  energy savings are expected to be around 30%.

Each of the two sites will have new lighting schemes, with a combined total of nearly 7,000 highly efficient LED and fluorescent light fittings – designed to displace up to 9% of the current electrical demand on site. Further energy efficiency improvements will reduce the electrical load by an additional 1%.

The energy services contract was tendered and supported through the Carbon and Energy Fund (CEF), which provides participating Trusts with specialist expertise, rapid project deployment, and access to capital funding that is recovered over a 15-year contract period through guaranteed cost savings that are underwritten by the appointed contractor. As an approved contractor within the CEF framework, ENER-G will design, build, finance and operate with financial support from the Cooperative Bank.

According to the NHS Sustainable Development Unit’s report, CHP offers NHS England the most significant impact on operational costs and carbon.

For more CHP news