The solar panels and batteries are moduls, that means that they arecompatible, and that you could beginn with less panels (if you haven´t got the money). Of course you don´t generate sufficent energy to run your refrigerator all night, but menwhile you got cold drinks i the daytime.
When you have safed sufficient money, you can install more panels, becuase they are moduls.
The equipment which you need to buy with a "future vision" is the invertor or APS, because you can´t conect two inverters in paralel (to the same grid). View also Sostainability.
You need the quantity of stationary bateries 12 V 150 Ah (without reserve):
You need the quantity of stationary bateries 12 V 150 Ah (with a 1 day* reserve):
You need the quantity of stationary bateries 12 V 150 Ah (with a 3 days* reserve):
Calculation of panels y bateries
The average daily sunshine hours could be found in tables for your region.
You multiply the panelpower 110 W with the average daily sunhours 3,5 h/d = 385 Wh/d.
You divide your daily energy needs 1552 Wh/d by your daily panel energy 385 Wh/d = 4 panels.
You divide your daily energy needs 1552 Wh/d by your system voltage 12 V = 130 Ah battery capacity.
You divide your needed battery capacity 130 Ah by the capacity of one battery 150 Ah = 0,86 batteries.
You multiply the quantity of batteries with the reserve factor 2 for 1 day of reserve = 1,72 batteries.
You multiply the quantity of batteries with the reservefactor 4 for 3 days of reserve = 3,45 batteries.
Wh/d
Wh/d
Paneles
Ah
Bateries
Bateries
Bateries
* Reserve of the solar system
The reserve of the solar system is calculated on the base of your geografical position: There are places where it rains during three or four days consecuently, so you need a minmum reserve of three days.
It also depends if the service of the system has to be garantized, like for example in comunications, medical equipment, etc..
We recomend to increase step by step the instaled bateries, view also Sostainability.
4 fotovoltaic solar panel of 110 W costs aproximately between:
4 stationary battery** of 12 V 150 Ah costs more or less:
1 regulator (protector of the battery) of 12 V 30 A costs more or less:
1 inverter APS of 1000 W 110 V AC costs between:
(The APS transforms the direct current DC in AC,so you can connect any (small) normal equipment for 110 V AC)
We don´t calculate instalation costs, because it´s easy to install:
Total of investment for this system is between:
Cost of the system
** Life expectancy of accumulators
There are different types of stationary accumulators or batteries with different plates and electrolites:
low mantainance, open.
free mantainance with valves.
free mantainance with gel.
other special types .
Average life expectancy of accumulators depending of the model and trademark:
