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This imagery was generated using Google Earth™. The data were captured sometime in the last three years.
The picture on the left shows your home.
The picture on the right shows your home and the surrounding neighborhood.
[Click the picture of your
neighborhood to see it enlarged].
We can use this satellite imagery to do an initial assessment of your site.
Solar can work for you, but not for your neighbor immediately to the to the East!
The second house over might gain some benefit. However,
since their house is turned to the West of a true N-S line, a system on their home
would be less effective than yours.
None of the nearby houses across the lagoon appear to qualify at all.
Solar electric makes sense for you - and clearly, on resale, your favored placement is a selling point. Adding a solar system
should increase the value of your property substantially.
From this, we can determine:
1. You have a south facing roof
2. Your roof is bathed in sunlight! There do not appear to be any obstructions.
We will look at the tree on the North-West Corner of the house. It is not a problem
right now but we
should try to estimate its rate of growth.
3. You have documented usage from your utility of about 8 kWh per Year.
A 5kW system should generate this nicely.
4. You have more than enough appropriate roof area to locate a 5kW PV System
with an attractive
margin around it.
If you are curious, here is how we calculate this:
Insolation data for your area shows that PV systems will produce about 1,650 kWh annually per 1 kW of
generating capacity]. Thus a 5kW system will generate about 8,250kWh a year for you.
The PV system we are recommending to you requires 100 SqFt/kW so
we calculate that you will need about
500 SqFt for your 5kW of generating capacity.
From the Satellite imagery, we estimated that you have about 592 SqFt - more than enough.
Of course, this is
verified by hands-on measurement!
5. If you finance this completely, you will save $25 over current utility costs.
6. If you do not finance it, but pay $5,629 out-of-pocket, over 10 years
you avoid spending $10,460 on the electricity you didn't buy.
You will also accrue $10,000 more when the house is sold.
This $14,831 is profit over 10 years on the initial investment of $5,629 - A total of 263% in 10 years or 26% / Year!
Please read the Notes shown below. They have some important background information
NOTES:
Note 1:
Please be reassured that Google™ does not offer a ‘real time’ image.
No one is watching to see if you are home!
Note 2:
This text was taken from:
http://www.energymatters.org/WEBpowerChoices.pdf:
Long Island is one of the prime areas for solar photovoltaic (PV) electricity generation in the
country. This is a result of the Long Island's high electric rates (which helps PV to compete on
price), the coincidence of peak summer demand and summer sunshine on Long Island, and a
good amount of fair weather year round.
Roof-mounted PV arrays on homes and businesses on Long Island can generate electricity all
year but have high output when electricity is in greatest demand: during hot summer
days when air-conditioners drive electric demand to record highs.
Note 3:
"Typical Long Island insolation 1,650 kwh annually per 1 kW PV)"
is from:
http://www.energymatters.org/CEPExecutiveSummary.pdf
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