How Many Solar Panels Do I Need for My House? The question that always pops out is as follows, I have three air conditioning units, one fridge, two TVs, one wash machine and a dryer, how many solar panels do I need? It is a hard question to answer because not all appliances and models are the same, therefore, a better way to understand how many panels you need for your house is to check your utility bill. How much are you paying for your electric bill? One solar panel of 290 W can produce an average of Awg 0.80 per day, if you have 20 panels or a 6 kW system, you’re solar panels can produce an average of Awg 16.00 per day.

After you answer that question, the next question is to ask yourself where and how much area or space do I have for solar panels? If you don’t have any space or area for solar panels, then your house is not suitable for a solar panel. If you do have space for solar panels,  are there any trees or objects around that area that might cast shadows on the panels? Trees or objects can cast shadows on the panels during the day and can significantly reduce your electric production or even not producing any energy at all.

Elmar’s electricity tariff

 Electricity Tariff Usage in kWh Rate per kWh in Awg 0-500 0.391 501-1000 0.449 >1000 0.584 Fixed charge 10.00

Elmar’s electricity tariff is a scale tariff which means that when your electricity consumption is in a certain range in kWh you’ll be paying at a certain rate, and when you surpass or go below that range then you’ll enter into another rate. As an example we can assume that if you consume on average 300 kWh per month, then you’ll be paying Awg 10.00 for the fixed charge, in addition you’ll need to pay for the 300 kWh which falls in the 0-500 kWh range, the rate is Awg 0.391/kWh. Your monthly charge will be 300 kWh x Awg 0.391=Awg 117.30 plus the Awg 10.00 fixed charge, the total monthly utility bill is Awg 127.30.

To really understand how this scaling tariff works we need another example, so we would assume an electricity consumption of 800 kWh per month. The first 500 kWh fall into the 0-500 kWh range and the rate at that range is Awg 0.391/kWh. The remaining 300 kWh falls into the 501-1000 kWh at a rate of Awg 0.449/kWh. To calculate the total electric bill, we would first need to calculate 500 kWh x Awg 0.39113= Awg 195.50, and the remaining 300 kWh at a Awg 0.449/kWh. That would be 300 kWh x Awg 0.449= Awg 134.70 and the total electric bill would be Awg 195.50 + Awg 134.70 + Awg 10.00= Awg 340.20.