2.5MW Biomass District Heating

Newport City Homes

Newport City Homes (NCH) is a housing association providing services to more than 10,000 residents, leaseholders and shared owners in the city of Newport.


In 2015 Newport City Homes began construction of a biomass energy centre to integrate with the existing 900 home district heating scheme in Duffryn.  This project was delivered in partnership with British Gas and the majority of funding was provided under the British Gas ECO programme.

Sustainable Energy was employed to provide design, tendering, commissioning management and RHI application for the largest biomass district heating scheme in Wales.


Sustainable Energy undertook a technology review of suppliers for large-scale wood chip boilers and worked with British Gas to contract with Austrian company, Polytechnik for the supply of a 2,500kW wood chip boiler. Design for the boiler integration, energy centre layout and metering was undertaken by Sustainable Energy prior to supporting the tendering process and construction of the project through to handover.


The energy centre comprises a 2,500kW wood chip boiler with 240m³ fuel store, which allows one artic lorry per day of sustainable local wood chip to be delivered. Thermal storage of 50,000litres allows the biomass boiler to deliver heat to the district heat network efficiently. Three 2,900kW gas boilers provide energy during back up and peak heat demand conditions.

The system includes an electrostatic filter to ensure emissions are reduced to the lowest levels and full integration of the biomass and gas boilers is aided by a comprehensive control and monitoring system.


The project was delivered on time and budget. Sustainable Energy continues to work with Newport City Homes to assist with the procurement of sustainable wood fuel, maintaining a high boiler efficiency and improving efficiency of the overall scheme, helping to ensure that all residents receive lower cost renewable heat.