E.ON led the way when they installed one of largest combined solar thermal and photovoltaic arrays in the UK on the side of their head office in Coventry. Not only does the installation give a live example of what a large commercial array could generate – 25 mega watt hours, it also saves 14.2 tonnes of CO2 per annum.
Benefits of the Westwood solar array
- The array provides 60% of the hot water demand, supplying the gym and kitchen
- The array generates 25 MWh in its component parts for the PV and thermal each year
- A 23kW peak output PV system like this could generate £5,043 per annum for 25 years
- Energy costs avoided of £873
- The CO2 saved over the year is 14.2 tonnes
- Low maintenance
- Panels have a 25-30 year lifespan.
- The financial case
The picture above shows only part of our total array at E.ON HQ. A 23kW peak output PV system like this could generate a potential revenue of £5,043 per year for 25 years and coupled with an energy saving of £873 per year, that a total of almost £6,000 a year.
What is solar thermal and solar photoelectric?
Solar thermal panels absorb the sun’s energy and use it to provide hot water while solar PV panels convert the sun’s energy into electricity that can be used immediately to power appliances.
The panels can be installed on any sloping roof or facade that faces in a generally southerly direction. They work best on bright, sunny days but they will also operate effectively when it’s cloudy.
Benefits of solar:
- PV is eligible for the Government's Feed-in Tariff if installed by an MCS accredited installer like E.ON
- Renewable and emission free
- Long term performance guarantee from E.ON Sustainable Energy
- Satisfaction from generating your own renewable energy.
The installation of Solar PV has become a low risk investment opportunity, guaranteeing returns that can’t be matched by most bank interest rates1. Solar PV makes complete financial sense AND gives you environmental credentials to shout about.
How it works
- The Feed-in Tariff has been set by Government for a full 25 years at guaranteed rates2.
- You'll be paid for all the electricity you generate whether you use it or not.
- You'll receive an additional fee for the electricity you export back to the grid.
- Because you're generating your own electricity from Solar PV, you'll avoid the cost of buying it from the grid
- E.ON take care of all the metering registration and certification required to claim the Feed-in Tariff.
1. Based on a solar PV installation of 29.6 kWp (kW peak) with an installation cost of £84,592 (220m2 panel area), which generates an average annual output of 24,225kWh, performing at 90% at year 12, and 80% at year 25. The Feed-In Tariff rate of 31.4 pence kWh is combined with savings from offsetting 100% of the electricity generated against an import rate of 9p kWh. This delivers a return on investment over 25 years of 10.42% versus a standard bank interest rate of 5%.
2. The payments you will receive if you choose to install a new array after 31st March 2012 will be lower than if you act now, so contact us today for a no-obligation estimate of our solar PV installation costs and potential revenues.