4kw Solar Power System

4kw Solar Power System

Estimation of Costs and Benefits

The 4kw solar power system usually includes solar power panels ideally installed on a south facing roof. It ought to generate around 3400 kwh each year based upon it’s physical location.

A 3 bed house uses around 3000 kwh each year of electricity. So although you will probably generate all the energy all your family members requires, you still have to depend around the National Grid throughout the nights so when energy generation is intermittent because of poor climate conditions. You’ll also have occasions when more energy is needed than being generated like when utilizing a dishwasher, washer or electric oven.

Any excess energy produced could be offered to the nation’s Grid.

a). No allowance has been created for the price of upkeep of the machine. The believed lifespan is twenty five years however no allowance has been created for that loss of performance because the photovoltaic system ages.

b). Benefits may decrease or increase based upon the fluctuation of the local electricity suppliers prices. A rise in the mains electricity cost means the advantages of getting solar power panels increases. But a decrease in electricity prices means your solar benefits decrease.

c). A 4kw solar electricity system requires roughly 28 square metres of roof space. You should think about whether the look of the solar power panels may modify the property’s value in case of selling your building within the years ahead.

4kw Solar Electricity PV (Photovoltaic) System Cost Analysis

Believed price of System $7500 (the price of systems have reduced considerably lately meaning the payback period has shortened)

4kw solar system creating roughly 3400 kwh of electricity per year = $476 (calculated at 14c per kwh – believed worth of best local electricity company tariff)

Enter Tariff (Government Benefit) @ 16c  per kwh generated = $544 (inflation may reduce the need for this benefit within the lengthy term unless of course it might be index linked)

Exported electricity not used (presently @ 4c per kwh)

Total Annual Benefit $1020