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Payback from solar batteries
One of the biggest issues when deciding to get solar batteries is the payback time. for the solar batteries the payback time can be less appealing then the payback from solar panels.
For example, a solar panel system can save up to 80% off your electricity bill, which leaves only a small margin of 20% to save using battery, so for the cost of a battery 40% compared to your solar panels 60%, there is a higher rate of payback from the panels then there is the battery.
Let’s break it down. For a solar panel system with battery storage: Panels generate up to 80% and cost around 60% of the total, Solar batteries can save 20% and cost around 40% of the total. So we have an 80-60 over a 20-40 ratio.
Basically the batteries take much longer to pay off then the panels. these figures aren't exact but help describe the scenario. This doesn't mean you shouldn’t get solar batteries, like I said before things can get a little confusing.
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Which solar battery do i need
Deciding which solar battery you need can make your brain spin, if its your first experience with a solar panel system. Ther are multiple variables you should know before making a descision.
How much energy does your property use?. you need to know the amount of energy your property uses so you can choose the correct size for your usage, no good paying out for a 5kw battery system if your only using 4kw.
What time do you use the majority of your energy. if you use the majority of your energy when its dark then you would probably want a slightly larger solar battery system then you would if you used the majority of your energy during the day.
How much energy do your solar panels generate?. you usually want to choose a solar battery storage system that's smaller then the energy output of your solar panel system, again because you wont be able to fill it and, unless your planning on upgrading.
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Alternatives to solar batteries?
There are multiple alternatives to having battery storage, its just a matter of figuring out your exact situation and starting from there. Other alternatives include.
Installing extra solar panels. This would mean a larger inverter and a larger system which costs more, so if you cant use the energy you generate then you have to sell it to the grid a a much smaller rate the what your paying, which would mean your paying extra for a system that could take you longer to pay off.
Alternatively if you have an emersion heater or electric boiler, you could have an ibooster system installed instead of a battery, this would help to power your heating and save you money on your heating bill too.
It may just be, batteries would be the best solutions for your needs, there are many more factors to consider but these should give you a guideline of how our team would tailor a system to fit your needs and budget.