- Which surface occupy the panels on the roof?
The covered area is 264 sqm on the exposed southern slope of the roof is 15 degrees
- What is the power of the photovoltaic plant?
The total power of 34 200 toilets for a production of 32,000 kWh estimated
- What about the electricity?
Electricity is fully sold to EDF is obliged to buy it for 20 years at a contract price (EUR 57.18 cts in 2008 and indexed annually)
- How has cost the facility?
190 000 euros ht
- How is it funded?
A loan of EUR 128 000 over 9 years to 4.25% fixed subsidies for a total of 30 000 euros, a flow of 32 000 euros
- Is there a contract redemption?
Yes, EDF is bound by a contract that requires him to buy electricity for 20 years
- What happens there after 20 years?
panels are still producing, electricity will be sold at market conditions in 20 years or be self-consumed (electric cars ...)
- How many years does it take to recoup an such a project?
9 years to repay the loan over two years to trace the flow = 11 years
- What is the annual production?
production forecast is 32000 kWh per year, the annual revenue expenditure is estimated at 18,300 euros (57.18 cents per kWh price 2008)
- production for 2009 allows it to repay the loans and fees ?
Yes, actual production for 2009 is higher than expected, it was already late September and 32,000 kwh should carry at least 35,000 kwh at the end of the year
- Is that the panels lose efficiency over time?
The manufacturer guaranteed 80% of production to 25 years. We can estimate a production loss of 0.8% per year
- Does it work in cloudy weather, fog, drizzle, during full moon?
As shown in the graphic production, sunshine is the main factor of performance. The less light, the less it works: better showers followed by sunny as the drizzle and fog all day, as soon as the sun sets the installation stops and the moon is not powerful enough to restart
- Is the south exposure is necessary?
The south exposure is best, with a roof pitch of 35 degrees, but with a lower slope due south as it works, and with an orientation slightly east or west and a positive slope
- Should special insurance?
insurance panels on hail damage, fire, hurricanes are the same kind as that secured the buildings and the cost is 300 euros per year. A peculiarity Our contract with the GAN is to have a dilapidated contractualised 1% per year. An operating loss in case of damage is also taken out to cover the downtime for a year (the time to rebuild the building)
- Must purchase an extended warranty for UPS?
The manufacturer SMA offers an extended warranty to 20 years. We have subscribed for an additional charge of 1 / 3 of the inverter nine (1500 euros more per inverter). This service is optional but the weak link of the system is the inverter that may fail before the panels. One can choose to accrue this amount on production of the plant especially knowing that the price of UPS has dropped sharply since 2008
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