chandsandhu
MPA (400+ posts)
The altE Off-Grid Solar Panel System Calculator helps you size the battery bank, watts of solar panels and the solar charge controller you need. The calculator assumes you will need to size your system to get you through average amount of sun-light in the least sunniest month of the year for your location. You still may want to consider a backup generator, however. Feel free to call our knowledgeable technical sales staff toll free at 877-211-8192 and have them help you find the system that fits your needs.
[h=3]YOUR INFORMATION[/h][h=4]Used if you optionally choose to save your calculator for later use[/h][TABLE="class: normal transparent"]
[TR]
[TD]Name:[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Date:[/TD]
[TD][/TD]
[/TR]
[/TABLE]
[h=2]Battery Bank Sizing[/h]This calculator will help you size the battery bank for your system.
[h=3]STEP 1:[/h][h=4]Your Daily Energy Usage[/h]Watt Hours per Day:

Is your energy usage too high? Don't despair, our knowledgeable sales folks can help you find other potential solutions. Please call us toll free at: 877-211-8192 .
[h=3]STEP 2:[/h][h=4]How Many Days Should Your System Run without Sun?[/h]How many days of backup power do you want in case of cloudy/rainy days?
(when your solar panels will produce little energy)
[h=3]STEP 3:

80F (27C)70F (21C)60F (16C)50F (10C)40F (4C)30F (-1C)20F (-7C) Degrees
[h=3]RESULTS:[/h]
Select a battery bank voltage: 122448
Note: All calculations assume only a 50% discharge to your batteries to optimize battery life.


[h=2]Solar Panel and Solar Charge Controller Sizing[/h]This calculator helps you size the solar panel(s) and charge controller(s) needed for your system.
[h=3]STEP 1:[/h][h=4]Determine the Solar Exposure for Your Site[/h]You need to determine the average number of sun-hours per day during the least sunniest month of the year (not the whole year).
Select the State-City Closest to your location (currently only US states are provided)
- Select a City - AK - Fairbanks AK - Yakutat AL - Montgomery AR - Fort Smith AR - Little Rock AZ - Tucson AZ - Prescott AZ - Phoenix CA - Santa Maria CA - San Francisco CA - Bakersfield CA - Fresno CA - Los Angeles CA - Daggett CA - Long Beach CA - Arcata CO - Eagle CO - Pueblo CO - Grand Junction CO - Boulder CT - Bridgeport CT - Hartford DE - Wilmington DC - Washington FL - Jacksonville FL - Key West FL - Miami FL - Tallahassee FL - Tampa GA - Atlanta GA - Savannah HI - Honolulu IA - Des Moines ID - Boise IA - Waterloo IL - Chicago IN - Indianapolis KS - Topeka KS - Dodge City KY - Lexington LA - Lake Charles LA - New Orleans LA - Shreveport MA - Worcester MA - Boston MD - Baltimore ME - Caribou ME - Portland MI - Saulte Ste. Marie MI - Lansing MN - St. Cloud MO - Columbia MO - St. Louis MS - Meridian MT - Glasgow MT - Great Falls MT - Miles City NC - Charlotte NC - Cape Hatteras NC - Greensboro ND - Bismarck NE - Omaha NJ - Newark NM - Albuquerque NV - Las Vegas NV - Ely NY - Binghamton NY - Buffalo NY - Albany NY - Syracuse NY - New York City OH - Columbus OH - Cleveland OK - Tulsa OK - Oklahoma City OR - Astoria OR - Portland OR - Medford PA - Pittsburgh PA - Erie PR - San Juan RI - Providence SC - Charleston SD - Rapid City TN - Nashville TN - Memphis TX - San Antonio TX - Brownsville TX - El Paso TX - Waco TX - Fort Worth UT - Salt Lake City UT - Cedar City VA - Richmond VT - Burlington WA - Seattle WA - Olympia WI - Green Bay WI - Madison WV - Charleston WY - Lander
or

You can use this world map of solar insolation values to determine an estimate of sun-hours for your location.
[h=3]STEP 2:[/h][h=4]Sizing Your Solar Panel Power Needed[/h]The total wattage of Solar Panels that you need is:
Watts, or kilowattsThis value takes into account losses due to system inefficiencies.
[h=3]STEP 3:[/h][h=4]Determine How Many Solar Panels You Need in Your Array[/h]How many solar panels do you need? That depends on the panel you choose.
Select the wattage of the panel your interested in, and see the results below:
Please Select 5 10 20 40 50 60 65 70 75 80 85 90 100 110 120 130 135 140 145 150 155 165 170 175 180 185 190 195 200 205 210 215 224 225 235 239 240 245 250 255 260 265 270 275 280 285 290 295 300 310 315 320 325 330 335 340 345 350 355 360 watts per panel
You will need panels for a total of watts.


[h=3][/h][h=4]Sizing your Solar Charge Controller[/h]You will need a charge controller that can handle amps


Now that you have sized up the system that fits your needs, call our Knowledgeable Sales Folks at 877-211-8192 and let them help you find the exact products for your system.
http://www.altestore.com/store/calculators/off_grid_calculator/