Multiply 5 hours of sunlight x 290 watts from a solar panel 1 450 watts or roughly 1 5 kilowatt hours per day.
Flat roof square feet per kw solar 10.
4 how does that compare to your annual energy usage.
In order to calculate the below data we averaged annual kwh production in the top 12 solar states and assumed standard 250 watt panels in order to calculate how many panels you would need.
A 9 45 kw solar system installed on a 1 800 square foot roof costs between 39 600 and 81 000.
So each kw installed will.
A 10kw solar installation will usually require between 600 and 700 square feet of roof space.
Assuming 0 35 kwh for a 2 000 sq.
This will greatly impact how you mount the panels and how many you can fit on your roof.
Home the estimated electricity consumption is 700 kwh.
A 10 kw system may require as much as 1 000 square feet.
If your area is limited you might consider using more efficient solar modules which provide more watts unit of area but cost about the same per watt.
That brings the total cost of the solar roof to 29 173 80.
That s about 500 550 kilowatt hours of energy per year from each panel on your roof.
Or a residential sloped roof.
The remaining 1 293 square feet of roof space would be covered in tesla s inactive shingles coming to a cost of 7 240 80.
As an average each kwh will be worth around 11 5p per kwh and each kw installed will yield 890 kwh every year.
Which is enough to cover the average u s home s electricity usage of 10 972 kwh per year.
The us census bureau determined that single family homes have an average area of 2467 square feet.
When dividing these values you obtain 0 35 kwh per square foot.
Is 5kw 5000 watts so you can use that as a benchmark if you re unclear on what your power needs will be.
A 10 kw solar system can produce between 11 000 kilowatt hours.
Let s say on a good day you average 5 hours of direct sunlight.
A 1 kw watt system might require as little as 80 square feet of roof area for 4 typical modules.
The yearly savings and income will depend primarily on the cost of electricity displaced and the of electricity used on site.
At this point you can use the calculation procedure described in the previous section.
Is this a flat roof.
A flat roof solar system usually costs around 750 900 per kw to install.
In addition to attachment issues the most optimal rooftop areas for solar were also the most visually prominent with the homeowner voicing concerns over the aesthetic.
They recommended a 7 8 kw solar roof.
The average system size in the u s.
Of the 15 000 square feet of roof space roughly 12 000 square feet is covered by standing seam metal roofing while the remaining 3 000 square feet are covered by tpo.