Solar panel systems utilized to supply partial or full power to a
facility can produce a substantial financial return as a long-term
investment. The benefits of solar panels will vary depending on the
location of the Air Force Base. For instance, it may not be a cost
effective energy source in climates that receive little sunlight due
to frequent cloud cover or areas that receive a great deal of shade
due to adjacent topography. The amount of direct or peak sunlight a
site receives on a daily basis will be one of the largest factors
affecting the rate of investment return. The specific design and
size of a photovoltaic system depends on two fundamental variables.
First and foremost, the amount of peak sunlight the area receives on
a daily basis since this directly affects the output capability of
solar panels. The second factor influencing the system magnitude is
the desired output from the system. Once these two variables have
been determined the solar panel system design and cost can be
determined. As a general guideline the formula below may be used to
establish the payback period for a solar panel system in the United States:
Z / (Y * W) = X
Where:
Z = Cost of installed solar panel system.
Y = Annual usage of kilowatthours.
W = Average national price per kilowatthour in 2006 per the
Energy Information Administration. See below for application
guidelines:
● Residential $0.104
● Commercial $0.0946
● Industrial $0.0616
● Transportation $0.0954
X = Number of years to payback solar panel system cost.
If a solar power is deemed a preferred energy source, select a
system with a lifespan exceeding the X value.
LEED EA Credit 2
offers three possible points for “On-site Renewable Energy” based on
net metering of energy production.
Benefits of Solar Panels
In addition to the financial rewards mentioned above, solar energy is also a viable method to reduce carbon based pollution. Regulations limiting the amount of greenhouse gases an installation may emit are steadily becoming more stringent. Pollution related to our facilities will undoubtedly need to be minimized in order to allow activities, such as aircraft flight, to continue unaffected in support of mission objectives.
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