No matter how many calculations are made, this is a question that requires the advice of experts. We at Ozisun Solar endeavor to empower our customers with the base knowledge required to install solar panels in their homes, businesses or for commercial usage in Australia especially in Brisbane, Toowoomba, Sunshine Coast, Gold Coast, Gympie, Bundaberg, Noosa Heads, however, the estimation made of solar panels by you should not replace the advice of a sincere expert. (At Ozisun, you might receive a bit of better advice for more affordable solar panels or get a promotion offer).
The solar panel systems today range from 45 Watts to 315 Watts. To produce 6.67 kWh from your solar panels, you can either choose more of 45 Watts or less of 315 Watts systems. (You can learn how to make an approximate calculation for your wattage use through here) This depends on your preference and also on the area size where you are planning to install your solar systems. For a 6.67 kWh, the calculations will be the following:
(Approximate watts required multiplied by 1000/wattage of solar panel) = approximate number of solar panels
Therefore if you are considering to buy a 315 Watt solar panel for 6.67 kWh you need (6.67*1000/315) = 21.174 or 21 panels.
Factors determining the size of the Solar Panels for you in accordance to your needs
Although there are numerous factors to consider when deciding to invest in solar panels for your home, business or any commercial use in Australia especially in Brisbane, Toowoomba, Sunshine Coast, Gold Coast, Gympie, Bundaberg, Noosa Heads; Ozisun aims to equip its clients and potential customers with the information they require to make the right decision for their energy goals.
The prices for solar panels have decreased over the years, however, it is still advised to our clients to not indulge into over-paying for energy production without prior calculations. Solar Panels are imperative to reach your energy bill goals, therefore, having a general idea of their savings against their cost is of high importance.
For your convenience below are the lineation that will help in the closet proximity to accuracy to determine the number of solar panels you will need for your energy saving goals.
To determine the size of your solar panels for your needs in Australia, analyse and thoroughly study the bills that you are paying quarterly for the last couple of years at least. This creates a solid foundation for your understanding of how much energy your solar panels should produce in accordance to your energy needs. If you are paying $400 every quarter, it will be highly unsuitable for you to have a panel producing energy worth $1000 every quarter. You will also notice that although your energy units consumed have not increased, the amount paid against them has increased significantly over the years. This would give you more motivation to select solar panel as your energy source.
On the same energy bill, you will also be able to understand the units that you are utilizing. The unit for measuring your energy units is kWh (Kilowatts/Hour). As mentioned afore although your energy units may not change over the years, the cost against each unit consumed has increased significantly. This matters as calculation show how much more you have been spending for the same units over the years that in reality could have been saved. With the ability of solar panels to produce the same energy units for almost 20 years without any increase in cost per unit being paid by you leads to significant savings over the years. While determining the number of solar panels you need in Australia for your homes or businesses, forecast your energy usage i.e. if it is to increase or decrease over the years. Add the units you feel would increase over the years or subtract them if you believe they will cut down from the kWh being consumed by you today. For businesses, if the increase in usage of units over the past years has been at a steady pace, you would want to forecast with the increase ratio of energy units along with any significant increase or decrease expected.
This will help in setting up your energy/power usage expectations.
With the help of the analysis conducted in the first two points, you will be able to set up a realistic goal for your solar power production i.e. how much energy you want your solar panel to produce for you against the energy usage forecasted in the previous step. Some of our customers intend to completely switch to solar panel opting for a system where their solar panels produce kWh for all their needs (100% against usage expected in kWh), whereas some of our other customers opt for variable limits, 50%, 60%, 70% etc. An important factor to consider here is the production of energy via solar panels in accordance with seasons. In Australia, energy production via solar panels is higher during summers (December to February although it starts getting sunnier since October) than in winters leading to more production. If the utility has a solar buy-back program or you have the plans of buying a storage unit, then over-production during the sunnier months would not be a major concern. Some clients are in favour of neither and decide to lower their energy production output.
Our data analysis of existing clients indicates them to be satisfied with the advice provided by the experts at Ozisun in lieu of their circumstantial needs i.e. either purchasing solar panels energy storage units or plans to reduce their expected output from their solar panels.
Once all the factors are considered, it will be easier for you to have a much realistic power production goal from your solar panels here in Australia.
Calculating the number of Solar Panels
Total the number of your units and divide it by twelve (no. of months in a year) to give you an average unit consumption each month. Dividing the number of units consumed in a month from your power bill by 30 will give you the number of units consumed each day approximately. For instance if you use 1200 kWh on average each month, dividing it by 30 will give you an average consumption of 40 kWh each day.
Average the number of direct sunlight you get each day. During summers your hours of direct sunlight will be more than that in winters. For the sake of calculation, we will take an average of 6 hours of direct sunlight each day.
Formula kWh per month/ (average sunlight per day * 30) = kW Solar System
Using the numbers in the above steps and applying them in the formula
1200 / (6*30) = 6.67 kW Solar system
The formula gives you an extremely close estimate to how much solar system energy you require. Taking the example above, to provide 1200 kWH per month you need a 6.67 kWh solar energy system.
Discuss this number with the experts at Ozisun and they will give you the best prices for your solar needs. Ozisun does not compromise on quality and has the guarantee of providing you with the best solar panel systems at cheapest rates in Australia.
A point to remember is that this number is purely circumstantial and assumption based. We always recommend our clients to do their calculations but consider talking to the experts at Ozisun first for a more accurate solar panel size.
Consider the size of your house. The size of your solar energy system is not the same as the size of the panel. Talking to an Ozisun expert will help you in finding the solar panel size suitable to your needs and adaptive to your house.
To understand how many solar panels you need for your usage, you can follow through this calculation.
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