Can You Power Your House With Solar Panels

Raj Singh
July 23, 2023

Solar power has emerged as a popular option today, where sustainability and cost-effectiveness are key considerations for homeowners. Solar panels harness the power of the sun to generate electricity, offering a renewable energy source that can help combat climate change and reduce utility bills. But can solar panels power your entire house? This comprehensive guide will explore the possibilities and considerations of powering your house with solar panels.

The Potential of Solar Power

Solar power has significantly advanced recently, becoming one of the most efficient and cost-effective energy sources. With the right solar panels and storage technology, powering your home entirely with solar energy is possible. However, the process could be more complex than it seems.

Solar panels generate electricity during the daytime when sunlight is available. But solar panels cannot produce electricity independently at night or on cloudy days with limited sunlight. This is where battery storage systems or grid connections come into play.

The Role of Solar Batteries

To power your home completely with solar energy, you must invest in a solar storage system known as a solar battery. Solar batteries store excess energy generated during the day for use at night or during periods of low sunlight. This allows you to rely on your stored solar energy to power your home when your solar panels are not producing electricity.

While solar batteries provide greater self-sufficiency and reduce reliance on the power grid, they come at an additional cost. Solar batteries can range from $7,000 to $14,000, depending on the capacity and brand. However, the investment may be worthwhile if your primary motivation is to become more self-sufficient and reduce your carbon footprint.

Net Metering: A Cost-Effective Solution

If you don't want to invest in a solar battery or your area doesn't support net metering, you can still power your home with solar panels by relying on the power grid. Net metering programs offered by local utility companies allow homeowners to offset their electricity costs by selling excess energy back to the grid.

Under net metering, the excess energy is sent to the grid when your solar panels generate more electricity than your home consumes. In return, you receive credits for the energy you contribute. These credits can offset your electricity bill, reducing or eliminating your monthly costs.

Not all areas have net metering programmes, so checking if your state or utility company offers this option is crucial. If net metering is available, it can be a cost-effective solution to power your home with solar panels without needing a solar battery.

Determining the Number of Solar Panels Needed

The number of solar panels you will need to power your entire home depends on various factors, including your electricity consumption, the power rating of the panels, and the amount of sunlight your area receives. While the average American household requires between 16 and 20 solar panels to cover their energy usage, assessing your specific needs is important.

To determine the number of solar panels needed, follow these steps:

Step 1: Assess Your Electricity Usage

Review your power bills to understand your average monthly electricity consumption. Add up the kilowatt-hours (kWh) used each month and divide the total by 12 to obtain your average monthly consumption.

Step 2: Estimate Peak Sun Hours

Find out the number of peak sunlight hours your area receives on average. Peak sun hours represent the hours during the day when sunlight is strong enough for optimal solar panel performance. You can consult resources like Google's Project Sunroof for an estimate based on historical data.

Step 3: Determine Solar Panel Wattage

Check the power rating of the solar panels you plan to install. The power rating is measured in watts (W) and represents the amount of electricity a panel can produce. Typically, solar panels range from 250 to 400 W.

Step 4: Calculate the Number of Solar Panels

Now, you can calculate the number of solar panels needed using the following equation:

Average daily electricity consumption in kWh / (Solar panel power rating in kW x Average peak sun hours per day)

For example, if your home consumes 30 kWh per day, your solar panels have a power rating of 0.32 kW, and your area receives an average of 4 peak sun hours per day, the calculation would be as follows:

30 / (0.32 x 4) = 23.4

In this scenario, you would need approximately 24 solar panels to meet your energy needs.

Remember that these calculations provide a rough estimate, and it's essential to consult with a solar company for a more accurate assessment based on your specific circumstances.

The Benefits and Costs of Solar Power

While solar power offers numerous benefits, it's important to consider both the advantages and costs before deciding.

Advantages of Solar Power

  • Reduced carbon footprint: Solar power is a clean and renewable energy source that reduces greenhouse gas emissions, helping combat climate change.
  • Long-term cost savings: Once installed, solar panels can significantly reduce or eliminate your electricity bills, providing long-term savings.
  • Energy independence: With solar panels and a storage system, you can become less reliant on the power grid, ensuring a more stable energy supply.
  • Government incentives: Many governments offer tax credits and rebates to incentivise the adoption of solar power, making it more financially feasible.

Costs of Solar Power

  • Upfront investment: Installing solar panels requires an initial investment ranging from $18,000 to $20,000, depending on various factors such as system size, location, and panel type.
  • Additional costs for storage: If you opt for a solar battery, you will incur additional costs ranging from $7,000 to $14,000, depending on the capacity and brand.
  • Space requirements: Solar panels require ample roof space for optimal installation, which may only be feasible for some homeowners.
  • Reliance on sunlight: Solar panels depend on sunlight, so their efficiency can be affected by shading, weather conditions, and panel orientation.


While it is possible to power your house with solar panels, it requires careful consideration of factors such as electricity consumption, panel wattage, and storage options. Solar panels offer numerous benefits, including a reduced carbon footprint and long-term cost savings. Whether you rely on net metering or invest in a solar battery, solar power provides homeowners with a sustainable and financially viable energy solution.

If you're considering solar panel installation, it's crucial to consult with a reputable solar company like Nusolas, which delivers the Best Solar PV installation services in Clare, Galway, Limerick, and Tipperary. Their expertise in residential, commercial, agricultural, and educational installations ensures a seamless transition to solar power. Take the first step towards a greener future by contacting Nusolas for a quote today.

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Frequently Asked Questions

Can I power my entire house with solar panels alone?

Solar panels can generate electricity, but cannot power your home 24/7 without additional storage or a grid connection.

How many solar panels do I need?

The number of solar panels required depends on your electricity consumption, panel wattage, and average peak sun hours in your area.

Can solar panels eliminate my electricity bill?

Yes, you can reduce your electricity costs by using net metering programmes to use the excess energy your solar panels generate.

How much do solar panels cost?

Solar panels' cost varies depending on system size, location, and panel type. On average, installation costs range from $18,000 to $20,000.

Are there government incentives for installing solar panels?

Many governments offer tax credits and rebates to incentivise solar panel installations, reducing the upfront costs.

Can I use solar power during a power outage?

If you have a solar battery storage system, you can use stored solar energy during a power outage, providing backup power.

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*FYI, parts of this blog post were drafted by artificial technlogy. But rest assured, it's been thoroughly researched, edited, reviewed and me & my team.
About Author
Raj Singh

A seasoned professional in the solar industry, Raj Singh is dedicated to illuminating Ireland with the power of the sun. His passion for renewable energy and commitment to sustainability shine through his work in the solar industry.