When looking at the layout I was curious to see weather I would be able to put half of my project on the garage in the rear of the property and the other half on the home in the front. I was aware that the FIT program had put restrictions on people having multiple microFIT projects on the same piece of property but I wasn't sure how they had addressed the issue of having one microFIT project spread between different roofs on one piece of property. In looking for an answer I came across this document that was posted on the OPA's MicroFIT website (microfit.powerauthority.on.ca). The document states that:
"...a single rooftop facility may have generating equipment located on multiple buildings on a single property so long as the total capacity of the generating equipment located on the property is reflected in a single application and shares a common connection point"So it looks like I'm in business. I should be able to have the projects share a common connection point. Lets see how much room I have in order to determine what the approximate size of the project is going to be.
Using the local mapping software provided by the local municipality I was able to determine that the roof on the home in the front of the property is roughly 693 sqft. The roof of the garage in the back is able to provide another 567 sqft. This will give me a total rooftop area of 1,260 Square Feet. At this point I do not have any particular panel in mind for use in my projects but I will use the popular Sharp 230 in order to estimate how much energy I may be able to generate. This panel is compliant with the Ontario Domestic Content rules and will roughly take up 17.54 square feet (39.1" x 64.6").
Using these measurements I was able to determine that I should be able to fit 39 panels on the front home and 32 panels on the rear garage. Of course this assumes that I will be able to cover every square inch of space on the two roofs with solar panels. What's important to take away from this calculation though is the fact that I will most likely have to split the two projects up in order to reach 10kw.
Using a conservative estimate of 30% wasted space on the roofs I was able to calculate the size of my system as follows:
Using the 30% estimate of wasted space the areas now shrink to:
- Front = 693 x 0.7 = 485 Square Feet
- Rear = 567 x 0.7 = 397 Square Feet
Using the Sharp 230 on this project would allow for
- Front = 485 / 17.54 = 27 panels = 6,210 Watts
- Rear = 397 / 17.54 = 22 panels = 5,060 Watts