What Size Solar System Do I Need For My House

The numbers vary mostly because of the climate of each region.

What size solar system do i need for my house.

To calculate the size of your solar photovoltaic system take your daily kwh energy requirement and divide by your peak sun hours to get the kw output you need. Then divide the kw output by your panel s efficiency to get the estimated number of solar panels you ll need for your system. Solar power can save you around 400 per kw per year and a solar system will output around 4 times its size as a daily average. For example a 5kw system will output around 20 kwh a day and may save you up to around 500 every quarterly power bill.

Total number of solar panels. To get these numbers we used high and low panel production ratios to calculate how many solar panels are needed on average. Calculate the size of your solar system. System size based on daylight electricity use.

The typical homeowner will need 28 34 solar panels to cover 100 of their energy usage dependent on location and roof size. However if the household only consumes 40 of its electricity during daylight hours there is no point in installing such a large system. 3 x 1 3 3 9in this example you would need a 3 9 kw solar pv system to satisfy your home s energy needs. We listed the solar system size that would be needed in each region to offset that particular region s average electricity usage.

Roughly sizing up a solar system is easy. If we use a house in adelaide as an example you would need a 5kw solar system to generate this amount of power. The average australian household consumes 18kwh of electricity each day.