A year after commissioning the solar PV system on the roof of our old office buildings, we decided to analyse the true returns generated from a system using quality products. We were surprised and pleased at what we found, considering that we had one of the wettest years on record! The install used a combination of 88 Suntech solar panels and two SMA inverters using a K2 speedrail mounting system. The payback time, based on first year revenue returns and energy savings was estimated at 4.2 years.
|Real Figures||SMA Estimate||PV Sol Estimate|
|Energy Bill Savings||£3,000||£3000||£3000|
|1st Year’s Payback||£10,715.79||£10,294.47||£10,505.20|
|Payback time based on1st year’s figures||
As you can see from the data, our system not only out performed SMA Sunny Design and PV Sol forecasts, but is on track to pay itself back in 4.2 years! This is what happens when your system is installed by a trusted company using quality products.
|Modules||88 x Suntech 250|
|Inverters||2 x SMA STP 10000TL|
|System Size||22.00 kWp|
|Installation Type||Pitched trapezoidal roof|
|Mounting System||K2 Speedrail System|
|Location:||Swan Business Centre, Chiswick|