Trustpilot and STV

How Many Solar Panels To Power A House

Solar energy has emerged as a sustainable and eco-friendly way to power our homes. With growing concerns about climate change and the need to reduce our carbon footprint, many homeowners in Edinburgh are considering solar panel installation as a viable option to generate electricity.

However, one common question that often arises is, “How many solar panels do I need to power my house?”

In this blog, we’ll explore the factors influencing the number of solar panels required to meet your energy needs.

Location Matters

The amount of sunlight your location receives is a crucial factor in determining how many panels you need. In sunnier regions, you’ll need fewer panels to generate the same energy as those with less sunshine who need more solar panels.

For instance, a house in sunny California will require a smaller solar panel system than a house in the cloudy UK to produce the same amount of electricity.

Energy Consumption

Your household’s electricity bills are another vital factor. The more electricity you use, the larger your average solar panel system will need to meet your energy needs.

You can check your electricity bills over the past year to determine your energy consumption. This will give you a rough estimate of how much energy you use on average each month.

Panel Efficiency

Solar panel efficiency has improved significantly over the years. Modern solar panels can convert a higher percentage of sunlight into electricity so that you can generate more power with fewer panels.

When installing solar panels, consider their efficiency rating, often expressed as a percentage. Higher efficiency panels may cost more upfront but can save you money in the long run by requiring fewer panels.

Orientation And Tilt

The orientation and tilt of your solar panel dimensions also impact their efficiency. Ideally, solar panels should face south in the northern hemisphere and north in the southern hemisphere to receive the most sunlight throughout the day.

The tilt angle should also be optimised based on your location’s latitude. Solar installers can help you determine your panels’ best orientation and tilt to maximise renewable energy production.

Shading And Obstructions

Shade from trees, nearby buildings, or other obstructions can significantly reduce the efficiency of your solar panels. Before installing solar panels, assess your property for potential shading issues. If shading is a concern, you may need to trim or remove trees or consider alternative placement options for your panels.

Type Of Solar Panel

The type of solar panel you choose can significantly determine how many solar panels you need to power your house effectively. Different types of solar panels have varying efficiencies, costs, and characteristics that can impact the overall performance of your solar panel system. Let’s delve a bit deeper into this aspect:


Monocrystalline panels are known for their high efficiency and sleek appearance. Due to their high efficiency, you may require fewer monocrystalline panels to generate the same amount of electricity as other types. This efficiency often makes them a preferred choice when roof space is limited or when you want to maximise power generation in a smaller area.


Polycrystalline solar panels generate less efficiently than monocrystalline panels but are more cost-effective. You might need a more significant number of polycrystalline panels to produce the same amount of electricity as monocrystalline panels. However, they can still be a practical choice for many homeowners.


Thin-film panels are less efficient than both monocrystalline and polycrystalline panels. They take up more roof space for the same power output, so you might need a larger installation area. You will find that Thin-film panels are often lighter and more flexible, making them suitable for specific roof types or installations.


Bifacial panels can capture sunlight from both sides, increasing their overall efficiency. While they may be more efficient, they can still require more roof space compared to monocrystalline panels but less than traditional thin-film panels. The type of solar panel you select should align with your specific goals, budget, and available roof space. It’s essential to consider all these factors when determining the number of panels you’ll need to power your house efficiently.

Battery Storage

Many homeowners opt to include battery storage systems with their solar panels. Batteries allow you to store excess energy generated during the day for use at night or during cloudy days. The size of your battery storage system can impact the number of solar panels you need. A larger battery can reduce your reliance on the grid and allow you to install fewer solar panels.

Government Incentives

Government incentives and rebates for solar installations can also influence the number of panels you need. These incentives can offset the upfront cost of solar panels, making it more affordable to install a larger system. Be sure to research the incentives available in your area to determine how they might affect your decision.

How Many Solar Panels Does Your Home Need?

While there is no one-size-fits-all answer, it’s essential to thoroughly assess your specific circumstances to determine the correct number of panels for your roof space. Investing in solar panels not only reduces your carbon footprint but also offers long-term cost savings on your energy bills as you generate your electricity from solar panel wattage.

So, whether you need a few panels or a large array, solar power can be a sustainable and environmentally friendly solution for your home’s energy needs.

If you require a reliable solar panel installer in and around Edinburgh, you can count on The Edinburgh Boiler Company. Our team is dedicated to providing top-notch solar panel installation services to help you harness the sun’s power and make your home more sustainable.Contact us today to learn more about our solar panel services and how we can help you power your home.