Use our Off-Grid solar calculator tool below to estimate system size. Check out our video on off-grid sizing for details and more information on the design process. Contact online >>
Use our Off-Grid solar calculator tool below to estimate system size. Check out our video on off-grid sizing for details and more information on the design process.
Steps to use the off-grid calculator:
Fill out the table below to estimate energy usage. We''ve included some common household appliances found in off-grid homes. Try to account for everything, keeping in mind that off-grid homes should use efficient appliances, and the major heating loads (water & air heating) are usually not electric.
We''ll estimate your off-grid system size based on the list of appliances and energy usage that you entered. Keep in mind that this is only an estimate, and there are many factors that can influence system sizing. Please contact us for help designing your project.
Wil has been a part of the solar industry for over 20 years; as an electrician, solar installer, support technician, and more. He''s also been living off-grid since 1996. Wil and the rest of the Unbound Solar team are here to answer any questions you have about designing a system that will fit your needs.
**To estimate the number of hours that a refrigerator actually operates at its maximum wattage, divide the total time the refrigerator is plugged in by three. Refrigerators, although turned "on" all the time, actually cycle on and off as needed to maintain interior temperatures.
The 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. This calculator assumes and adds for inefficiencies in batteries, panels, and wiring.
Watt Hours per Day: (Amps x 240 volts x hours) You can take monthly kwh from electric bill and divide by 30 for daily wh total
How many days of backup power do you want in case of cloudy/rainy days?
What is the lowest temperature your battery bank will experience?
You need to determine the average number of sun-hours per day during the least sunniest month of the year. This is the ''Isolation Value''
Select the State-City Closest to your location (currently only US states are provided)
or Manually enter the average sun-hours for your location. Florida and Bahamas = 5
This value takes into account losses due to system inefficiencies.
How many solar panels do you need? That depends on the panel you choose.
You will need panels for a total of watts.
You will need a charge controller that can handle amps
A Flex 80 from Outback can only use 5000 watts of panels at 80 amps, so if your total wattage exceeds 5kw you need to add additional charge controller.
Use the Zip Code of the property where the system will be installed.* Our calculator will use the average winter sun hours for that Zip Code in order to provide a conservative estimate for your system size.
BigBattery uses the lowest daily sun hour average that the system’s install location can expect. We do this for sizing home and commercial ESS because the most important design parameter of any power system is that it is able to produce all of a home’s energy requirements in even the poorest solar conditions.
Going “Solar” isn’t right for everyone. Some areas of the country simply do not provide enough “Solar Irradiance” or have the “Sun Hours” per day to justify installing a solar system. Your geographical location plays a big part in how many average peak sun hours you get on a daily basis. The ‘Peak Sun Hours Map’ is a good illustration of how varied our country is when it comes to average solar irradiance.
Use the “Drop-Down” box below to select the city closest to you to see the sun hour range for your area. Search different cities to compare how your area’s solar resources stack up to other parts of the country.
Step 2: Completely Fill Out The Daily Load Calculator With ALL Electricity Loads
Use the Load Calculator tool below to estimate your daily energy usage. Input ALL electrical loads and appliances that will be powered by the solar and/or backed-up by batteries. To properly size the system, we need the maximum estimated daily usage for that electrical equipment year round. Most Off-Grid homes are designed with electrical loads in mind. They generally use energy efficient appliances and major heating loads such as space heating and water heating are usually not electric. Make sure you verify what is (or is not) electric and include the electric air conditioning, space heating, cooking, water heating, well pumps, clothes washing/drying, etc. into the daily load calculator form.
About Off grid solar bank calculator
As the photovoltaic (PV) industry continues to evolve, advancements in Off grid solar bank calculator have become critical to optimizing the utilization of renewable energy sources. From innovative battery technologies to intelligent energy management systems, these solutions are transforming the way we store and distribute solar-generated electricity.
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By interacting with our online customer service, you'll gain a deep understanding of the various Off grid solar bank calculator featured in our extensive catalog, such as high-efficiency storage batteries and intelligent energy management systems, and how they work together to provide a stable and reliable power supply for your PV projects.
