How many solar panels do you need for your home?

Switching to solar energy is an exciting and sustainable choice for homeowners in Perth, Western Australia. But determining how many solar panels you need can be a bit daunting. Let’s break down the key factors to help you understand what’s involved in calculating the right number of solar panels for your home.

understanding your energy needs

The first step in determining the number of solar panels you need is to understand your household's energy consumption. Look at your electricity bills over the past year to find out how many kilowatt-hours (kWh) you use each month. The average household in Perth consumes about 20 kWh per day, which translates to approximately 600 kWh per month.


FACTORS INFLUENCING THE NUMBER OF panels

Several factors will influence the number of solar panels you need:

  1. Energy Consumption: Your daily and monthly energy usage is the primary factor. High daily consumption will mean you will need more panels to meet your energy needs.

  2. Solar Panel Output: The efficiency and wattage of the solar panels you choose also play a significant role. Panels typically range from 370 to 500 watts.

  3. Sunlight Exposure: Perth is blessed with abundant sunshine, but the exact amount of sunlight your panels receive depends on their placement. Panels should ideally face north to maximise exposure, although west and east facing panels will work great too.

  4. Roof Space: The available space on your roof will determine the maximum number of panels you can install. Each standard panel is about 1.9 square metres.


INSTALLATION AND PROFESSIONAL ASSESSMENT

While these calculations provide a good estimate, it’s essential to get a professional assessment. At Millennial Power Group, our professional Solar installers will evaluate your home’s specific conditions, including roof orientation, shading and structural integrity. This ensures that your system is tailored to your needs and maximises efficiency.


BENEFITS OF SOLAR ENERGY

  • Cost Savings: Solar panels can significantly reduce your electricity bills by generating free power from the sun.

  • Environmental Impact: Solar energy is a clean, renewable resource that reduces your carbon footprint. 

  • Energy Independence: With solar panels, you become less reliant on the electricity grid, especially if you add battery storage to store excess energy for use during non-sunny periods or power outages.


CONCLUSION

While the above provides a helpful overview, a professional assessment is crucial for accurate planning and installation. For more information on how many solar panels your home will need, contact us at Millennial Power Group for a consultation.

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