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Solar Panel Output
Solar panel output is measured in watts.
Try the Solar Calculator.
Calculating Wattage
Wattage is calculated by multiplying the rated voltage by the rated
amperage. The formula for wattage is VOLTS times AMPS = WATTS.
For example, a 12 volt 60 watt solar panel measuring 20 X 44 inches
has a rated voltage of 17.1 and a rated 3.5 amperage. V x A = W 17.1
volts times 3.5 amps equals 60 watts.
Watt Hours
If an average of 6 hours of peak sun per day is available in an area,
then this solar panel can produce an average 360 watt hours of power
per day; 60w times 6 hrs = 360 watt-hours.
Peak Sun Hours
The intensity of sunlight varies throughout the day, therefore the term
"peak sun hours" is used to smooth out the variations. Early morning
and late-in-the-day sunlight produces less power than the mid-day
sun. Cloudy days produce less power than bright sunny days.
Geographical areas are rated in average peak sun hours per day
based on yearly sun data.
Series or Parallel
Solar panels can be wired in series or in parallel to increase voltage or
amperage.
Series wiring connects the positive terminal of one panel to the
negative terminal of another. The outer positive and negative terminals
will produce voltage the sum of the two panels, but the amperage
remains the same as one panel. So two 12 volt/3.5 amp panels wired in
series produce 24 volts at 3.5 amps. Four of these wired in series
produce 48 volts at 3.5 amps.
Parallel wiring refers to connecting positive terminals to positive
terminals and negative to negative. The result is that voltage stays the
same, but amperage becomes the sum of the number of panels. So
two 12 volt/3.5 amp panels wired in parallel would produce 12 volts at
7 amps. Four panels would produce 12 volts at 14 amps.
Series / Parallel wiring refers to doing both of the above - increasing
volts and amps to achieve the desired voltage as in 24 or 48 volt
systems.
Solar panel output is measured in watts.
Try the Solar Calculator.
Calculating Wattage
Wattage is calculated by multiplying the rated voltage by the rated
amperage. The formula for wattage is VOLTS times AMPS = WATTS.
For example, a 12 volt 60 watt solar panel measuring 20 X 44 inches
has a rated voltage of 17.1 and a rated 3.5 amperage. V x A = W 17.1
volts times 3.5 amps equals 60 watts.
Watt Hours
If an average of 6 hours of peak sun per day is available in an area,
then this solar panel can produce an average 360 watt hours of power
per day; 60w times 6 hrs = 360 watt-hours.
Peak Sun Hours
The intensity of sunlight varies throughout the day, therefore the term
"peak sun hours" is used to smooth out the variations. Early morning
and late-in-the-day sunlight produces less power than the mid-day
sun. Cloudy days produce less power than bright sunny days.
Geographical areas are rated in average peak sun hours per day
based on yearly sun data.
Series or Parallel
Solar panels can be wired in series or in parallel to increase voltage or
amperage.
Series wiring connects the positive terminal of one panel to the
negative terminal of another. The outer positive and negative terminals
will produce voltage the sum of the two panels, but the amperage
remains the same as one panel. So two 12 volt/3.5 amp panels wired in
series produce 24 volts at 3.5 amps. Four of these wired in series
produce 48 volts at 3.5 amps.
Parallel wiring refers to connecting positive terminals to positive
terminals and negative to negative. The result is that voltage stays the
same, but amperage becomes the sum of the number of panels. So
two 12 volt/3.5 amp panels wired in parallel would produce 12 volts at
7 amps. Four panels would produce 12 volts at 14 amps.
Series / Parallel wiring refers to doing both of the above - increasing
volts and amps to achieve the desired voltage as in 24 or 48 volt
systems.
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| Unisolar 124-Watt PV Module SS-PVL-124 Discount Price: $412.60 |
| Unisolar 68-Watt PV Module SS-PVL68 Discount Price: $242.07 |
| Sharp 62-Watt Solar Shingles SS-ECO-SS12 Discount Price: $391.55 |
| Powerfilm Foldable 60 -Watt Solar Charger SS-F15-3600 Discount Price: $1,157.86 |
| Solar Laptop Charger and Portable Power Kit 300 Watt - 12 Watt Solar Panel Includes Solar Panel, Accessories and Powerpack 300 Regular Price: $349.00 ET-SLC12 |
| Solar PV Panels |
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Millennium Planet is a wholesale distributor of an unlimited array of renewable energy components including high quality solar photovoltaic (PV) panels used in
residential and commercial applications, including off-grid, grid-tie systems, as well as portable solar systems and complete do-it-yourself kits. We're partnered
with a growing list of quality manufacturers to ensure that you get the best product for your particular application at the best price. All quality products are CE
Certified and manufactured to ISO 9001 standards. Please call or email for current pricing information, discounts and incentives.
residential and commercial applications, including off-grid, grid-tie systems, as well as portable solar systems and complete do-it-yourself kits. We're partnered
with a growing list of quality manufacturers to ensure that you get the best product for your particular application at the best price. All quality products are CE
Certified and manufactured to ISO 9001 standards. Please call or email for current pricing information, discounts and incentives.
Please Note - Solar PV Panel
prices continues to fluctuate.
Due to increased worldwide
production, economies of
scale and government
subsidies, panels have gone
from approximately $5.00
per watt a few years ago and
industry experts like SEI
expect prices to be as low
as $1.00 per watt by 2012.
Let us help you build and
configure your system and
we will identify the highest
quality products for your
system at the most current
and affordable price.
prices continues to fluctuate.
Due to increased worldwide
production, economies of
scale and government
subsidies, panels have gone
from approximately $5.00
per watt a few years ago and
industry experts like SEI
expect prices to be as low
as $1.00 per watt by 2012.
Let us help you build and
configure your system and
we will identify the highest
quality products for your
system at the most current
and affordable price.