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Rooftop Solar Panels New Jersey - Residential Solar Power Energy

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How many watts solar do I need to power my house?

If you’ve heard about the new trend of powering homes through solar panels, then you’ve probably heard about a whole lot of numbers too. How much does a solar panel cost? How many watts do I need to power my house? What will the installation cost be? These are all common questions that people wonder about when they hear about solar power. The truth is, there’s no simple answer to these questions. For example, while it’s true that if you want to power your home with solar panels alone, you’ll need at least 2 kW of electricity-generating capacity per square meter of roof space (e.g., an average house), there are other factors that come into play as well. Those who have a smaller roof space — going off-grid can cut costs by installing only the necessary amount of rooftop electricity-generating capacity needed to run their home and any appliances connected directly to it.

How many watts do I need for solar power?

To answer this question, you’ll need an estimate of the amount of electricity that your home uses in a given month. To do this, multiply the square footage of your roof by 30 (kilowatt-hours per square meter), then add any appliances or devices pulling power when they are plugged into the grid. If you get really good at estimating energy use and you keep track over time, then you can find out exactly how much power you need over time to meet your needs. One thing to note is that because solar panels generate electricity only when they are exposed to sunlight, it’s important to have enough roof space for even one panel on your roof.

How do you figure out how much rooftop solar you’ll need?

The first step to figuring out how much rooftop solar you’ll need is to figure out your energy requirements.

Next, find out what percentage of your total electricity use is consumed during the day and at night. Make sure that you have an accurate idea of how much power you need on a daily basis or you might end up frustrated with the amount of electricity it requires to run your home.
Now that you know how much power you’ll need on a daily basis and who can install enough capacity for your home, calculate how many square meters of solar panels are needed for a 1-kW system.

The last step is figuring out what size panel would be best for your roofing surface area and climate zone. Roofing surfaces tend to vary in size; some may have more roofing surfaces than others. A rough approximation is usually 1 square meter per person living in the house — so if there are three people living in the house, then three square meters would be required for each person’s roofing surface area.

Installing a solar system is not a one-time expense

The truth is, in order to install a solar system on your home, you’ll need to invest a significant amount of money. This will vary depending on the size and quality of the system you have installed. So, when deciding whether or not you want to take the plunge into installing a solar system at your home, think about how much you can afford to spend. Once you figure out how much space your roof has and what type of electricity-generating capacity you’ll need for it, then decide whether or not adding a solar system is worth it.

Batching system will save you money on your bill at the end of the day

Whether you go the solar panel route or choose to install a battery bank and use off-grid energy, the most important factor in making your home energy system work is understanding how much power you need. For example, when you’re using your solar panels alone, it’s not advisable to leave them on all day or night because they’ll only be able to generate enough electricity for a certain period of time. However, if you have a battery bank that stores excess energy generated by your solar panels during the day, then you can use this stored energy at night and at other times when the sun isn’t out. This process is known as “batching”, and it helps save on your bills at the end of each month.

What’s the difference between grid-connected and off-grid systems?

Grid-connected systems are tied to the power grid and receive electricity from the utility company. In contrast, off-grid systems can be tied directly to solar panels or other renewable energy sources that produce electricity. Off-grid systems often have backup batteries so they can run even when there is no power from the grid.
Grid-connected solar panels will also use more energy than off-grid ones because of how power companies need to balance the load on their system. While this technology does save money in the long run, it will cost you more for a quicker return on investment.

Pros and cons of installing a grid-tied solar system

Installing a grid-tied solar system is typically the most common way to power your home with solar panels. This means there are pros and cons to it.

Pros of installing a grid-tied solar system:
• A grid-tied solar system generates electricity on-site and uses the utility company’s electricity distribution network, which can avoid expensive transmission costs for homeowners.
• The installed system is fully controllable and can be adjusted to accommodate changes in energy demand, such as variable weather patterns or power outages.
• Grid-tie systems may be eligible for rebates from public utility companies and other funding sources for homeowners who have solar panels installed on their property.

Cons of installing a grid-tied solar system:
• Grid-tie systems require constant monitoring and maintenance, which makes them less user-friendly than off-grid systems.
• If you want to move your home to a different location, you’ll need to install a new grid-tied system in your new location if you want continued access to utility services — not all utility companies offer services outside of their service area and these types of services are becoming increasingly rare in many parts of the country.

Off Grid System – Pros and Cons

In order for you to be able to power your home off-grid, you’ll need a larger capacity battery bank. This will require more space and money than simply running on grid power. Also, while a solar array can provide you with electricity at night, if you’re living off-grid (i.e., not connected to the grid), you’ll still need a backup generator — this can be costly too. Additionally, your roof space will take up more room on your property if it’s used exclusively for solar panels since they are usually mounted on thin metal frames rather than traditional roofing materials. There will also be an environmental impact from all of the components that go into building and maintaining an off-grid system – from having multiple energy sources like solar and gas generators instead of just one primary energy source like electric or natural gas, as well as having additional wiring for batteries and inverters that are required for a solar system.


Once you know how much electricity your home is using, you can determine how much solar power will be needed to meet your power needs. You can also use this information to determine if a grid-tied or off-grid system would be right for you.
A grid-tied system means the solar energy you generate will be used by the electric company and they’ll send the power to your home. An off-grid system means it will be used by your home and you can’t sell any excess electricity generated will be sold back to the electric company.

If you would like to know if we can install solar and put thousands of dollars in your pocket for doing it, use the form below to submit your electric bill for a no cost, no obligation evaluation.