Case study – commercial roof top solar
HES Estate Management
HES Estate Management Limited provide Residential Block & Estate Management services to property owners in the South of England. They act on behalf of more than 150 Residents Management Companies and right to manage companies, in addition to circa 100 Freeholder Managements. Solvo Energy were contracted to provide solar panel installation, electrical installation and commissioning services to their head office building in Leatherhead, Surrey.
14.4 kW
System Size
35
Number of Panels
£3,566
Estimated Annual Electricity Bill Savings
13,840 kWh
Annual Electricity Generation
The Solvo solar PV system will reduce HES Estate Management electricity bill by approximately £3,566 per annum and will pay for itself in just 5.04 years. The solar system offer will offer savings of £112,329 over the systems 35-year life.
Aerial photograph of the roof top installation taken by the Solvo Energy drone.
System FunctionalityThe installed system will function under three primary operational scenarios:
Generating Excess Solar
During summer daytime hours the system may produce more energy than required on site, and so excess energy is sold to the grid.
Partially Offset Usage
During winter daytime hours the system may not produce enough energy required to fully power the site. In this case excess energy is purchased from the grid to supply the deficit.
Overnight
As solar PV does not generate electricity outside of daylight hours, no power is generated, and all electricity must be drawn from the grid.
Solar PV generates on site green electricity which offers significant electricity bill savings and reduces carbon consumption thereby providing a contribution towards the UK’s journey to Net Zero. Future installation of a Battery Energy Storage System (BESS) will allow for utilisation of the system overnight and increase annual savings.
Generating Excess Solar
During summer daytime hours the system may produce more energy than required on site, and so excess energy is sold to the grid.
Partially Offset Usage
During winter daytime hours the system may not produce enough energy required to fully power the site. In this case excess energy is purchased from the grid to supply the deficit.
Overnight
As solar PV does not generate electricity outside of daylight hours, no power is generated, and all electricity must be drawn from the grid.
Environmental Benefits
Solar PV produces no CO2 emissions when generating electricity, creating a completely clean source of green energy. Environmental benefits provided by this system over its 35-year life cycle include:
84
Estimated tonnes avoided CO2
390,958
Car miles avoided
2,608
Trees planted
101
Long haul flights avoided