Scheme:
Phase 1 Public Sector Decarbonisation Scheme
Technologies used:
LED lighting, Air source heat pump, Roof insulation, Cavity wall insulation
Region:
South West
Client type:
Maintained school
St Andrew’s School
Key information
Estimated savings
£4,503
Annual savings
£114,100
£114,100
15.49
Annual carbon savings tCO2e*
Working with Salix
Project overview
Over the course of 2021, St Andrew’s School has implemented a myriad of decarbonisation measures as a result of funding totalling £114,051, provided by the Public Sector Decarbonisation Scheme (PSDS). The grant, provided by the Department of Business, Energy and Industrial Strategy (BEIS) and delivered by Salix Finance, has enabled the school to become net zero 29 years ahead of schedule of the UK’s 2050 net zero target.
The infrastructure strategy was holistic, with works including wall insulation, upgrading to double-glazed units and insulating under the timber suspended ground floors in the old Victorian-built area of the school. A suspended ceiling was also introduced to significantly reduce the heating required in two of the school’s classrooms.
The building work enabled the installation of an air source heat pump (ASHP). In upgrading the insulation, the lower temperature levels produced by the pump were sufficient for heating the school, saving money on radiator replacements.
The installation of Solar PV has helped generate enough energy to meet the school's power demands, in addition to 25% of the ASHP, with additional power stored in a battery for other needs. Implementing LED lighting, which is controlled by movement sensors, has also reduced energy usage.
The staff and students are incredibly passionate about sustainability and the upgrades have enabled us to show the children what renewable measures can be taken to secure an energy efficient future.
Technical breakdown
- Oil boiler replaced with air source heat pump (air to water)
- Installation of Solar PV on south facing hall roof
- Double glazing with metal or plastic frames
- Cavity wall insulation into walls of 3 classrooms
- Floor insulation – suspended timber floor
- New LED fittings
- Roof insulation
November 2021
*tonnes of Carbon Dioxide, calculated using Green Book emissions factors for electricity published by the government.
In Partnership with
