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BD Batteries - Buffalo, New York & Denver, Colorado
Buffalo Phone: 716.531.4875
Denver Phone: 303.800.4725

Lifeline Batteries, Total Power Batteries, Rock Racing Battery Line, Optima Battery Lines & Sun Xtender Batteries

Solar Panel Calculator
Calculate Solar Panel Output and Solar Panel System Inverter Sizes

This solar panel calculator is designed to help you determine the number of solar panels, wattage rating of those solar panels, and output required through the inverter to power your on or off grid system.

Location Nickname: Date

Step 1:

How many kilowatt-hours (kwh) does your home/location use per month? kilowatt-hours per month
(This value is usually printed on your electric bill. If you don't have a bill, or don't know your consumption, scroll to the bottom of the page and use the 'load calculator'  The energy calculator below will help you determine your monthly energy usage.)

Step 2:

You need to determine the average number of sun hrs per day to determine the multiplier for your solar output.

Select the State-City Closest to your location (currently only US states are provided)
Average sun-hours per day
or
Manually enter the average sun-hours for your location.

Step 3:

The total wattage of Solar Panels that you need is:  
This value takes into account some losses due to solar system inefficiencies.

Step 4:

How many solar panels needed depends on the wattage of the solar panels installed. Select the wattage of the solar panels you are interested in, and see the results calculated below:
KW / watt panels =
Your solar inverter should be capable of handling
AC - DC Sun Xtender Solar Battery Calculator
--Solar Battery Bank Sizing Calculator for AC run systems, 2 phase, 3 phase, 50 hz or 60 hz.

DC - DC Sun Xtender Battery Battery Calculator
-- Solar Battery Bank Sizing Calculator for DC systems at any voltage.

solar panels
Available Solar Panels
solar panels
Available Solar Batteries





Appliance Current Load Calculator to Daily Watt Usage

simply list them all with their current draw. All of your appliance that use electricity say how much they take on or near the cord. These items, like Refrigerators, lights, computers, Ranges, televisions, and others, all have a rough estimate in the table below for those who need it.

For each appliance, enter the number of that appliance that you own into the quantity box, Qty.
Enter the the power utilized in watts (amps x volts), into the Watts box.
Finally enter the hours a day the appliances are running into the Hrs/Day field below.

We have also provided a list of common appliance and their power consumption at the bottom of the page. This calculator will help those of you who need it, to build a snapshot of your power consumption by day. This will then allow you to multiply by the number of days in a month (28-31) and get to KiloWatt hours used a month. This can then be entered into Step #1 above.

Appliance * Qty Watts
(V x A)
Hrs/Day Watt Hrs/Day       Appliance * Qty Watts
(V x A)
Hrs/Day Watt Hrs/Day
1 11
2 12
3 13
4 14
5 15
6 16
7 17
8 18
9 19
10 20
Total Watt Hrs Per Day:
Total Kilowatt Hrs Per Month (30 Days):
(write down this value and enter it into Step 1 of solar panel calculator above)

FAQ and Help Section for the Solar Panel Calculator

a. I can not use the solar panel calculator without knowing the wattage of my appliances!
-So add up the appliances above, then move the total to the solar panel calculator. Calculate solar panels and then inverter needs...

b. I'm not sure of the watt usage over a day for my new unbuilthome. -Okay, so you can hypothetically use the rough estimate appliance load calculator below to estimate each appliance. Then add each appliance's value to the appliance calculator. Finally with the total power usage for a day, calculate monthly and daily kilowatt hour usage for the solar panel calculator above.

c. How do I use the Solar Calculator above without any power bills to go from?
-For most accurate results, add each appliance based on the sticker volts x amps, and then multiply by hours of usage per day. Once you have all appliances, multiply the total by 1.1 - 1.3 to accomodate for losses in the internal electrical system.

Tricks for using the Solar Panel Calculator Above without knowing the Watts of an Appliance

There are times that you don't know the consumption of a hypothetical situation. To get you closer, you can start by selecting the appliances from this drop down menus below. To the right will appear typical wattage values for the appliance you selected. Remember, for the most accurate information look on your appliance to find its wattage rating (or it amperage rating and then multiply that by its voltage to approximate its wattage). Use these final values above in the Solar Panel Calculator to determine your solar panel and inverter needs.
  = Watts
Renewable Energy
Solar Info:
Solar Production Calculator - By State
Solar Panel Need Calculator
Solar Production Maps
Solar Power Battery Sizing Calculator
How Solar Panels Make Electricity
Solar Power Parts Explained - Grid Tied Installations
Solar Power Parts Explained - Off Grid Installations
Solar System Parts
Solar Panels
Blocking Diodes
DC Connection Wire
DC / AC Grid Tie Inverters
DC Charge Controllers
Lugs, Rings, Etc
Wind Generators: Using Wind and Solar DC Generation Together
Wind Generators
Generators by Comparison
Wind Generator Towers & Parts
Wind Maps

BD Batteries - A Broomfield-Designers Company
Serving the Local Colorado Community 9-5 Mountain & Emergencies P. 303-800-4725 F. 303-600-9726
Serving the Buffalo and the Great Lakes Communities 9-5 Eastern & Emergencies P. 716-531-4875
Mailing Address: 5023 West 120th Ave. #138, Broomfield, CO 80020
OUR DENVER WAREHOUSE IS MOVING TO A NEW LOCATION AT THIS TIME.
WE WERE SCHEDULED TO REOPEN OUR BRICK AND MORTAR BATTERY WAREHOUSE
IN EARLY 2011. IN THE MEAN TIME OUR WEBSITE AND PHONES OPERATE FINE!

We do thank the public for the outreach of concern, and votes of confidence.
Do call Lorene prior to schedule used battery pickups, new battery dropoffs, etc. by appointment.

Corporate Accounts, Vendors, Installers, Electricians, and others interested in setting up an account.



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Buffalo, New York
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716-531-4875
303-800-4725

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The information contain on this deep cycle AGM batteries website is deemed reliable, but not guaranteed. Please verify specific information on marine AGM batteries, rv AGM batteries or auto AGM batteries listed here by calling us direct. We are proud to offer the highest quality AGM batteries and hope you will consider using our deep cycle AGM batteries in the near future!