To understand your own consumption, a good rule of thumb is to review your total energy consumption for the past twelve months in your utility bills. Most utility bills provide. Divide that number by 12 and you'll have an excellent estimate of what you'll need your solar panels to generate each month. We estimate that a typical home needs between 20 and 24 solar panels to cover 100 percent of its electricity consumption.
The real formula for figuring out how many solar panels you need can be found by system size divided by production ratio, divided by panel power. Of course, sometimes it's easier to talk to an expert who knows how to size a solar system and who can guide you through the design process. Once you're ready, we recommend that you schedule a free design consultation with us so we can verify your size, find compatible products, and make sure the system works within your constraints (budget, construction space, and energy compensation). So what types of solar panel systems are there? What equipment is needed for an efficient home solar energy system? Can you install solar panels yourself? And when will the breakeven point occur? Let's dive in to find the answers to these questions and more.
If you're just trying to save money on your electricity bills with the added benefit of powering your home with renewable energy, then a grid-connected solar system is probably best for you. Grid-connected systems are especially good if your utility company offers a complete net metering for retailers. Most solar panels that are installed today are monocrystalline solar panels, but some homeowners still choose polycrystalline panels to save a little money. Inverters are the mechanisms that convert the direct current (DC) produced by solar panels into the alternating current (AC) required by homes.
How a solar inverter works in your home solar system Solar panels are not connected directly to the roof. The panels are mounted on shelving systems, which are fixed to the ceiling and tilted for an optimal degree of sun exposure. A net meter is a key component of solar systems that are connected to the grid if your utility offers net metering. If your utility company offers net metering and you have solar energy connected to the grid, with or without a battery, any solar electricity you produce that you don't use (or store in your battery) is sent to the grid.
With net metering, your utility company will pay you for the electricity you send, reducing your electricity bill. To track the amount of electricity your solar panels produce compared to the amount of electricity your utility consumes, a special electricity meter, called a “net meter”, is required. Since they are not connected to the grid, off-grid solar systems do not need a net meter. Solar batteries can be added to your solar system to store solar energy for later or if you want to use it during the night.
Storage batteries also allow a photovoltaic system to operate when the power grid is not available. If you want your solar panels to work during a power outage, you must pair them with a solar battery. Charge controllers are installed between the solar panels and the battery to prevent the batteries from overcharging and ensure that the battery is charged at the correct voltage level. If overcharged, batteries can catch fire, so a charge controller is essential to ensure that the battery system is safe and durable.
The monthly peak sunshine hours you receive tell you how many kWh of electricity 1 kilowatt (kW) of solar panels will produce in your area in a day. So, if your state receives 150 peak hours of sunlight per month, 1 kW of solar energy will produce 150 kWh of electricity per month. Since you now know how much 1 kW of solar energy will produce in your area, you can determine the size of the solar system you need to cover your electricity needs. So, you already know the size of the solar system you need to cover your energy consumption.
What now? To calculate how many solar panels you'll need, take the size of the solar system and multiply it by 1000 to convert the size from kilowatts to watts. The average solar installation will require between 335 and 405 square feet of roof space. To find out how much roof space your solar system needs, simply multiply the number of panels you need by 17.55 square feet, which is the area of most residential solar panels sold today. The home needs 20 to 30 solar panels to offset 100% of its electricity bill.
However, the results vary depending on factors such as household energy use and geographical location. To get started, answer the following questions to calculate how many solar panels you need to power your home. On average, how many kilowatt-hours (kWh) do you consume per month? (See your electricity bill) Let us help you create a customized draft of your solar energy for you on your real roof. To learn more about how much your solar panel system could cost, read on.
Now that you have an idea of how many solar panels you need, you can calculate the cost of the solar energy system. Probably consumes more electricity during certain months of the year. View your utility bills for the past 12 months and calculate your average usage (kWh) for that period. You can also calculate your average daily kWh consumption by dividing your monthly consumption by 30 (the average number of days in a month).
A standard solar panel produces around 1.24 kWh per day and costs between 65 and 75 cents per watt. Solar panels from well-known manufacturers cost between one and two dollars (or more) per watt. Based on the results from the solar panel calculator above, you can multiply the recommended wattage by 65 or 75 cents (or more) to get an approximate cost for all of your solar panels. Thanks to federal tax credits and increased demand, solar installation costs continue to fall, making it more affordable to go green.
Installation costs fell more than 70% in the past ten years, says Solar Energy Industries Association. The next step is to evaluate the different options for solar kits and energy systems. Installing your own solar panel system is easy when you have a team of experts to help you every step of the way. GoGreenSolar is the leading retailer of do-it-yourself solar systems, offering step-by-step installation support and a permit approval guarantee to help you save thousands of dollars.
Our kits include all the components you need to mount your solar panel. How to Calculate Solar Payback Period Does Solar Energy Increase Home Value? Our 50+ solar panel kits come with installation support, permit approval guarantees and flexible financing options for a hassle-free experience. Explore all of our solar panel kits here. Some permit requests may require one or more plan revisions and resubmission.
Please provide us with all the information needed to perform these reviews. Permit must be requested from the City within 30 days of delivery of the permit package and any resubmission must be resubmitted within 14 days of receipt of the revised plans. Our warranty does not apply to installations in unsafe structures, non-permitted structures, ground mounts, structural engineering, structures not built according to local building codes and other atypical building designs. This warranty only applies to our standard solar system kits, it does not apply to custom orders or solar systems not designed by our engineers.
That said, this graph shows how this rough estimate translates into kW solar and number of solar panels. The average U.S. household needs 19-23 solar panels based on average electricity usage of 877 kilowatt-hours (kWh) per month. To calculate how many solar panels you need, divide your home's hourly wattage requirement (see question no.
Also known as the rated power of a solar panel, panel power is the production of electricity from a specific solar panel under ideal conditions. If you have a small or unusually shaped roof, the size and numbers of solar panels are important considerations. The annual production of each solar panel is higher in states such as Arizona or New Mexico, which receive a greater amount of sunlight than less sunny regions, such as New England. Off-grid systems can be even more expensive because you'll need more solar panels and more storage to cover your energy consumption.
To find out if a solar panel system is a profitable and affordable investment for you, use the solar calculator below to gather the information you need to make a decision. When deciding how many solar panels you need for your home, especially if you're installing a large system, you'll want to consider how much weight your roof can support. To calculate how many solar panels you need, you must divide the total system size by the production ratio and the panel power. Once you know the size of the solar system you need and the power of the system, you can cross-reference the amount of space available to adjust the assessment of the size of your solar system.