One of the big questions we get is ‘what size system do I need and what will it power?’. The first point is that the solar doesn’t power certain devices. It feeds electricity into the system to off-set your current usage. In other words, by generating your own power you can use more free power and buy less from your electricity provider. When you are generating solar power and using this power, you are not paying for power from the grid. So the question is what can you ‘offset’ with 1 kWh?.
It is much easier now to tell what your appliances use with the energy efficient sticker on the front of the panel but what you need to know is what 1kWh powers. Let’s just work it out on a standard house and what you have running most of the time.
1kWh is 1000 watts hours, an easy way to think about the difference between watts and watt hours is speed and distance. Speed is how fast you are driving now and distance is the amount you drive over a period of time. 100kms an hour means you travel 100 kms over 60 mins.
1 kWh is 1,000 watts of power which could power the following appliances for an hour:
|Low End||High End|
|4 x 50 watt light bulbs||200w||200w|
If you have energy efficient, or smaller appliances, you can run more with your 1kWh. As you can see, at the low end you can run all of these appliances for an hour. (their combined total power use is 1,001 watts). Or running a heat pump or clothes dryer will take approximately 1kWh depending on the model.
Want to know more about your power consumption and how to save money then give us a call!