How To Find The Cheapest 1kW, 2kW, 3kW and 4kW Solar Panel System

What are Watts?

Solar energy is calculated and paid for by watts. Solar panels convert the sun's energy into electricity which is measured and sold as watts. The amount of sun the panel absorbs determines the amount of wattage you produce. If you have a solar panel with a high watt output in an optimum sunshine position for maximum daylight hours you will produce a high wattage output. 1000 watts equates to 1kw, 2000 watts to 2kw and so on.

How many Watts do I use?

You can reduce the amount of watts you use by making as many energy efficient savings as you can. These can include using energy lightbulbs, not leaving appliances on or on standby, taking shorter showers and using lower temperatures when washing. All will greatly reduce the amount of watts you use.

There are plug in devices on the market now that will tell you how many watts a certain appliance uses. Simply plug the device into the wall then plug your appliance into the device. Once you have calculated roughly how much your household expends in energy you can made a decision as to which watt rating panel you need. Or simply use your existing energy bills to calculate this amount.

So I know my Output, how many Panels will this Translate in to?

It requires a slightly complex maths equation to work this out. You will need to take the figure worked out above as a daily average and divide that figure by the sunlight hours your panels would receive. You can find out the UK's daily sunlight hours by using your search engine and looking for UK insolation charts.

From the above sum you will need to use a multiplier of 1.25 which factors in energy your solar panel system uses to run itself. So the sum would thus be: daily kWh / hours of sunlight x 1.25 = X Watts per day. From this figure you will need to work out what solar wattage panels to use. Take your X Watts figure and divide it by 1000, 2000 etc. which figure represents the 1kw, 2kw etc.

Where to find the Cheapest Deals

The cheapest deal is to have free installation using a company backed by the Governments FITs (Feed-In Tariffs) scheme. You will benefit from free electricity in your home (although you will need to switch over to your usual provider when there is no sun i.e. at night). Many companies now provide free advice and in addition comparison websites will help you weigh things up.

Expert advice is crucial as a solar panel system will not be right for all types of roof, or roofs in certain conditions or positions. A survey would need to be carried out and having a reputable company make the installation will give you peace of mind and guarantees.

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