batteriesinaflash.comAnswer
Apr 06, 2022 - 08:10 PM
Hello Glen,
To make sure I gave you the best answer I reached out to the manufacture about the question asked and this is the answer they gave us.
"The answer very dependent on a number of factors. What is the Amperage of the solar charge controller. How much solar irradiance is the system getting during the charge cycle. How is the charge controller set up; does it prioritize battery charging over supplying the house with power?
A properly sized solar system will generate 100% of the homes daily energy needs in a matter of 3-6 hrs a day. If it is an off grid system, the energy not used during that 3-6 hrs will be stored in the batter to supply the home with power for the 18-21 hrs that the solar is not producing. When the sun comes out again the next day it will generate enough power to supply the home AND charge the batteries back up, to be used again that day.
There are many inverters & charge controllers and they all have different options and settings. The inverters capabilities, the size of the solar system, the amount of power being generated by the solar system, and the energy demand from the house all dictate how fast the battery will charge.
I know this is not the simple answer your customer is looking for. If it is 100% off grid. The proper way to size your system is to calculate your highest daily usage year round. Then take daily sun hours based upon the winter solstice (worst solar irradiance). Size your solar system based upon those numbers and select the inverter that matches the size solar system you needed to cover your highest daily usage on the worst daily sun hours.
Once you know how big your solar array needs to be, you can size the battery system. The first thing that needs to be answered is how long do you want complete battery autonomy? If it’s could or stormy for a couple days and the solar panels do not produce any (or very little) energy; how long do you want the batteries to provide 100% of the needed power? If it’s 2 days, you need to take the highest daily energy use calculation and multiply it by at least 2.3. That will be the average size of the battery backup will be needed."
In summary they would need to know some more information about your solare array to give you a reasonable answer. If you want to reach out to us directly then call at 800-515-2423 to discuss it.
To make sure I gave you the best answer I reached out to the manufacture about the question asked and this is the answer they gave us.
"The answer very dependent on a number of factors. What is the Amperage of the solar charge controller. How much solar irradiance is the system getting during the charge cycle. How is the charge controller set up; does it prioritize battery charging over supplying the house with power?
A properly sized solar system will generate 100% of the homes daily energy needs in a matter of 3-6 hrs a day. If it is an off grid system, the energy not used during that 3-6 hrs will be stored in the batter to supply the home with power for the 18-21 hrs that the solar is not producing. When the sun comes out again the next day it will generate enough power to supply the home AND charge the batteries back up, to be used again that day.
There are many inverters & charge controllers and they all have different options and settings. The inverters capabilities, the size of the solar system, the amount of power being generated by the solar system, and the energy demand from the house all dictate how fast the battery will charge.
I know this is not the simple answer your customer is looking for. If it is 100% off grid. The proper way to size your system is to calculate your highest daily usage year round. Then take daily sun hours based upon the winter solstice (worst solar irradiance). Size your solar system based upon those numbers and select the inverter that matches the size solar system you needed to cover your highest daily usage on the worst daily sun hours.
Once you know how big your solar array needs to be, you can size the battery system. The first thing that needs to be answered is how long do you want complete battery autonomy? If it’s could or stormy for a couple days and the solar panels do not produce any (or very little) energy; how long do you want the batteries to provide 100% of the needed power? If it’s 2 days, you need to take the highest daily energy use calculation and multiply it by at least 2.3. That will be the average size of the battery backup will be needed."
In summary they would need to know some more information about your solare array to give you a reasonable answer. If you want to reach out to us directly then call at 800-515-2423 to discuss it.
