Pre-dimensioning module
For off-grid solar installations.
Isolated solar
installation
A photovoltaic installation is made up of solar panels alone. This tool can be used for calculations in any part of the world. By entering basic data, the programme analyses and calculates the proposed elements.
More information
Isolated solar and wind
installation
A mixed installation is made up of solar panels and a wind turbine. This tool can be used for calculations in any part of the world. By entering basic data, the programme analyses and calculates the proposed elements.
More information
Isolated solar installation
1.- Energy needs
Enter the energy needs to be met, in monthly KWh.
Estimated energy required (KWh/ month)
2.- Power and dimensions of solar panels
Select the power of the solar panels and their approximate dimensions. For reference, we have listed common power values and dimensions of solar panels (monocrystalline and polycrystalline) below
Length (m) Width (m) Power (Wp)
1,58 0,81 185
1,65 0,99 235
1,96 0,99 285
Then enter the power and approximate dimensions of the panel:
Power of Panel PV
Length (m)
Width (m)
3.- Location
Depending on the location, enter the approximate number of Equivalent Sun Hours (ESH), according to the following graph (recommended value for initial calculation PSH= 3).
Then enter the relevant area:
Peak or equivalent sun hours for your area (PSH, ESH)
Calculate
Calculation error. Check that the information you have entered is correct, all fields are obligatory and must be numerical.
4.- Results
Annual electrical energy required (KWh/year):
No. solar panels necessary:
Peak power of the solar installation Wp:
Total surface area required (m2):
Minimum capacity of 24V batteries, expressed in Ah:
The results provided are an initial estimate, so that non-professional users can obtain an idea of the size of the installation required, according to the input parameters. The ESH or PSH values are approximate, and have been estimated for an optimal tilt value for the area, for a fixed installation without a tracker. The battery capacity, expressed in Ah per C100, assuming a depth of discharge of 50% and for 2 days of autonomy. The surface area required refers only to that occupied by the panels, without taking into account the distance to avoid shadows, nor the optimal tilt of the panels. For an exact, detailed calculation of your installation, please contact us.
Isolated solar and wind installation
1.- Energy needs
The table shows common powers and operating hours for consumption of different electrical devices. If you wish, they can be modified to reflect your particular case more specifically.
Equipment Quantity Power (Wp) Hours/day running KWh/month
Refrigerator 0
Oven 0
Ceramic hob 0
Microwave 0
TV 0
Dishwasher 0
Washing machine 0
Radio 0
Computer/PC 0
Points of Light 0
Estimated energy required (KWh/ month)
2.- Data mini wind turbine
It is assumed that the wind turbine does not function in wind speeds of less than 10.8 km/h (3 m/s). Maximum power of the mini wind turbine: common values from 300w to 5000w. Wind speed for maximum power: 43 km/h (12 m/s is a common value for mini wind turbines).
Average annual wind speed in your area (km/h)
Maximum power of the mini wind turbine chosen (watts)
Wind speed for maximum power (km/h)
3.- Power and dimensions of photovoltaic panels
Select the power of the solar panels and their approximate dimensions. For reference, we have listed common power values and dimensions of solar panels (monocrystalline and polycrystalline) below.
Length (m) Width (m) Power (Wp)
1,58 0,81 185
1,65 0,99 235
1,96 0,99 285
Then enter the approximate power and panel dimensions
Power of Panel PV
Length (m)
Width (m)
4.- Location
Depending on the location, enter the approximate number of Equivalent Sun Hours (ESH), according to the following graph (recommended value for initial calculation PSH= 3)
Select the corresponding number
Peak or equivalent sun hours for your area (PSH, ESH)
Calculate
Calculation error. Check that the information you have entered is correct, all fields are obligatory and must be numerical.
5.- Results
Annual electrical energy required (KWh/year):
Minimum capacity of 24V batteries, expressed in Ah, C100:
No. solar panels necessary:
Power of the solar installation (Wp) to cover 100% of the energy required:
Minimum total surface area required (m2):
Power of wind turbine selected for calculation (W):
Estimated power generated annually (KWh):
% of energy required supplied by the chosen wind turbine:
Wind power (W) to cover 100% of requirements:
The results provided are an initial estimate, so that non-professional users can obtain an idea of the size of the installation required, according to the input parameters. The ESH or PSH values are approximate, and have been estimated for an optimal tilt value for the area, for a fixed installation without a tracker. The battery capacity, expressed in Ah per C100, assuming a depth of discharge of 50% and for 2 days of autonomy. The surface area required refers only to that occupied by the panels, without taking into account the distance to avoid shadows, nor the optimal tilt of the panels. For an exact, detailed calculation of your installation, please contact us.
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