5 Signs That Your Roof Is Perfect for Solar

As energy prices continue to rise and sustainability becomes more of a priority for homeowners, solar panels are becoming an increasingly popular choice in Ireland. But not every roof is created equal when it comes to going solar. If you’re considering making the switch, it’s important to determine whether your roof is a good fit before making the investment.

Here are five signs that your roof is perfect for solar panels — and what to do if it’s not quite there yet.

1. Your Roof Gets Plenty of Sunlight Throughout the Day

This is the most important factor when assessing solar suitability. Solar panels need access to direct sunlight to generate power efficiently. A roof that receives unobstructed sunlight from late morning to late afternoon is ideal.

Ask yourself:

  • Are there large trees, nearby buildings, or chimneys casting shadows?
  • Is your home in an area that generally gets a lot of sun?

In Ireland, south-facing roofs tend to perform best, but east- and west-facing roofs can also work very well — especially with modern solar technology that captures lower light levels more efficiently.

💡 Pro Tip: Book a free shading assessment with a trusted installer like PLANET BLUE ENERGY to see how your roof stacks up.

2. It Has a South-Facing or Near-South-Facing Orientation

In the northern hemisphere, south-facing roofs receive the most sunlight over the course of a day, making them the most efficient for solar panels.

That said, orientation isn’t everything:

  • East- or west-facing roofs can still yield excellent results, especially if you install panels on both sides to capture morning and afternoon sun.
  • Flat roofs can also accommodate solar panels with tilted mounts to achieve the optimal angle.

The key is consistent exposure to the sun — and even if your roof isn’t perfectly south-facing, your system can still pay off in the long run.

 

3. Your Roof Is in Good Structural Condition

Solar panels last 25+ years, so it’s important that your roof is in good shape before installing them. A solid, well-maintained roof means:

  • No leaks or water damage
  • No missing tiles or structural issues
  • A stable surface for mounting the panels

If your roof needs to be replaced in the next 5–10 years, it’s best to carry out any necessary repairs before installation. This avoids the added cost of removing and reinstalling the panels down the line.

A qualified installer will typically inspect your roof as part of the quote process and advise if any maintenance work is needed beforehand.

 

4. There’s Enough Space for a Solar Array

A standard home solar system typically needs 15–30 square metres of roof space, depending on your energy needs and the efficiency of the panels. The more usable space your roof has, the more power your system can generate.

Ideal conditions include:

  • A large, uninterrupted section of the roof
  • Minimal obstructions such as skylights, vents, or chimneys
  • Uniform roof angles and materials

Even if your roof is small or oddly shaped, PLANET BLUE ENERGY can recommend high-efficiency panels or creative layouts that maximise every square metre.

 

 

5. You’re Not in a Protected or Heavily Restricted Area

Some homes in conservation areas or listed buildings may face restrictions when it comes to solar panel installations. However, Ireland’s planning rules have recently become more solar-friendly.

As of 2023:

  • Most homeowners can install solar panels without planning permission.
  • There are still exceptions for buildings of architectural significance or in scenic zones.

Before moving forward, it’s worth checking with your local authority or installer to see if any special permissions are needed for your property. Most professional solar companies in Ireland will handle this step for you as part of the process.

 

What If My Roof Isn’t Perfect?

If your roof doesn’t tick every box, don’t worry — you still have options:

  • Ground-mounted solar systems work well if you have land available.
  • Solar carports or pergolas can double as shade structures while generating energy.
  • Battery storage can help maximise your system’s value, especially if your generation hours don’t line up with your usage patterns.

An experienced solar provider will help design a system that works with your property, not against it.

 

Installing solar panels is one of the smartest ways to reduce your energy bills and lower your carbon footprint. And while some roofs are more ideal than others, many homes in Ireland are well-suited to benefit from solar technology — especially with today’s efficient panels and government grants.

If you think your roof might be a good candidate, the best next step is a free solar assessment from a trusted installer. They’ll take into account all the factors — sun exposure, roof condition, orientation, and more — and help you decide if solar is right for your home

 

Planet Blue Energy is committed to helping Irish homeowners harness the full potential of solar. Whether you’re interested in panels, a diverter, batteries, or just advice, we’re here to bring sunshine to your home—efficiently, affordably, and sustainably.

 

Ready to Make the Switch?

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