On average, a 2000 square foot home would need a 4 kW system, which means 10 400 watt panels. One of the first questions a homeowner interested in solar energy might ask is “how many solar panels do I need? Often, people wonder if they need a certain amount of panels depending on the size of their home. There's no reason to beat around the bush, so let's get to the point. To get the average amount of energy used by a home in the United States, an area of 2,000 square meters is needed.
The home would need between 16 and 21 solar panels. That's assuming the house has a good south-facing roof that receives a total amount of sunlight every day. The house is actually just over 2,000 square feet, and its occupants consume around 10,800 kilowatt-hours per year. Of course, this number varies depending on the type of housing (apartment or single-family, for example) and the state in which the house is located, but here we are talking about averages.
The State You Live In Determines How Effective Solar Panels Are. At the upper end, a kilowatt (kW) of solar panels in Arizona produces about 1,900 kWh in a year. At the lower end, the same 1 kW of solar panels only produces 1,400 kWh in Michigan. It is a 7.7 kW solar installation needed to produce 10,800 kWh of solar energy in Michigan (10,800 divided by 1,400) versus.
Considering that the average solar panel from companies like Qcells and Silfab is now around 370 watts, you can divide the kilowatts of solar energy needed by 0.37 and round them up to get the final number. Keep in mind that this is only a rough estimate and does not take into account households that consume more or less than 10,800 kWh of electricity per year. If you want to have a much better idea of how many solar panels you need, check out our solar panel calculator. When considering your annual electricity consumption, the location of your home, and the direction your roof faces, it's quite easy to determine how many solar panels you'll need.
We have an article that guides you through all the steps of calculating your solar energy needs. A Chart of Annual Usage on a Monthly Electricity Bill As mentioned above, an average household will need between 16 and 21 370-watt solar panels to generate the average amount of energy used by a home in the United States. However, there are many factors that affect energy consumption, such as the need for air conditioning and the type of fuel used for heating. As in the previous example, a house with a gas oven, stove and water heater has very low electrical energy needs, while a house with all electrical appliances needs a much larger amount of electricity.
In addition, the needs of a typical grid-connected home solar installation differ from those of an off-grid solar energy system. People looking to disconnect from the power grid need to oversize their solar panel to produce as much electricity as they would use during the darkest days of winter, and they will also need to add a solar battery to store excess energy for later use. Ben is a writer, researcher and data analysis expert who has worked for clients in the sustainability, public administration and clean energy sectors. As a precedent, LADWP calculates this type of average at 2 watts per square foot.
Therefore, a 2,000-square-foot home would be allowed a 4,000-watt solar panel. Depending on the type of panel you choose, a system of this size would be 12 to 18 solar panels. Keep in mind that this formula for calculating consumption varies depending on who produces your electricity. Solar PV system output and estimated savings are calculated based on several factors, including product type, system production, geography, climate, shade, electricity use, total utilization of the 30% solar investment tax credit, and utility rate structures.
However, because every home is unique, DIY Solar Shack will help you determine how many panels you need for an off-grid home. Once you've calculated your average monthly energy consumption, it's time to calculate your average monthly solar power generation per panel. This site provides homeowners with information on the most effective solar products and provides access to experienced solar installers and manufacturers. Instead, you can estimate your solar energy needs by analyzing your consumption and determining how much electricity each solar panel can produce over the course of a year.
This figure assumes that the solar system will cover 100 percent of the energy costs of a house larger than 2,000 square feet. Panel power, often referred to as the rated power of a solar panel, is the amount of electricity produced by a solar panel under optimal circumstances. The actual number of panels you will need depends on the size of your home, the position of the panel, the geographical area and the effectiveness of the panel. In addition to the location of your home, the cost of solar panels per square foot of residence varies depending on the size and shape of your roof, the type of panels you use, and your energy consumption.