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How to Optimise Solar Panel Efficiency through Correct Positioning?

by Syed Qasim
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Last modified on April 6th, 2024 at 9:29 pm

Solar energy, hailing as one of the most promising renewable sources of energy, has gained considerable attention in Ireland. With the increasing cost of conventional energy, homeowners and businesses are switching to more sustainable options. Enter solar panels—a green solution that’s not only sustainable but also cost-effective. Yet, their efficiency heavily depends on their positioning.

Here, we present a comprehensive guide from Nusolas Energy on positioning your solar panels for maximum efficiency. In the evergreen land of Ireland, utilising solar energy might seem a tad challenging given the unpredictable weather. But with the right tools and techniques, especially the optimal positioning of solar panels, it’s possible to harness the sun’s power efficiently. A small tweak in the positioning can yield significant results in energy generation. Let’s uncover the science behind it.

The Significance of Solar Panel Positioning

Why Does Positioning Matter?

Solar panels generate energy by converting sunlight into electricity. Their efficiency largely depends on the amount of sunlight they receive. Thus, ensuring they’re positioned to receive maximum sunlight throughout the day is vital. A panel placed at an incorrect angle might miss out on hours of potential energy generation.

Considering the Sun’s Path

In Ireland, the sun travels from the southeast to the southwest, reaching its highest point towards the south. By positioning your panels to face south, they can capture sunlight for the longest duration during the day. However, this is a general recommendation, and specific factors might affect the best angle for your property.

Factors Influencing Solar Panel Positioning

Latitude and Seasonal Changes

Ireland’s latitude affects the angle at which sunlight strikes. In winter, the sun is lower in the sky, demanding a steeper angle for solar panels. During summer, as the sun is higher, a shallower angle works best. Some panels offer adjustable angles to adapt to seasonal changes.

Roof Slope and Direction

Not all roofs are equal. The slope and direction of your roof play a significant role in determining the positioning of solar panels. While south-facing roofs are ideal, west or east-facing roofs can also be efficient with the right adjustments.

Obstructions and Shadows

Nearby trees, chimneys, or neighbouring buildings can cast shadows on solar panels, reducing their efficiency. It’s essential to consider such obstructions when deciding the placement.

Adjustable vs. Fixed Mounts

Benefits of Adjustable Mounts

Adjustable mounts allow homeowners to change the angle of their solar panels according to the season. This flexibility ensures optimal energy generation throughout the year. For instance, in winter, when the sun is lower, the panels can be tilted to a steeper angle.

Advantages of Fixed Mounts

Fixed mounts are stationary and are typically set at an angle that averages out the best positions throughout the year. They’re generally cheaper, require less maintenance, and are quicker to install.

Monitoring and Maintenance: Ensuring Optimal Solar Panel Performance

Proper monitoring and maintenance of solar panels are essential to ensure their longevity and optimal performance over time. Given the significant investment in solar panel installations, homeowners and businesses should consider regular upkeep as a priority. Here’s a deeper look into the why and how of solar panel monitoring and maintenance.

Regular Cleaning

In areas with higher pollution or where birds are common, solar panels can quickly accumulate dust, droppings, and other debris. This layer of dirt can obstruct sunlight and reduce the efficiency of the panels. Regular cleaning, using water and soft brushes or specialised cleaning equipment, can help maintain peak performance.

System Monitoring

Modern solar installations often come with monitoring systems that track the energy production of the panels in real-time. These systems can alert users to sudden drops in efficiency, which may indicate a fault or malfunction. By addressing such issues promptly, users can avoid prolonged periods of reduced energy generation.

Physical Inspections

Over time, solar panels may develop physical issues, such as cracks, delamination, or damaged connections. Annual physical inspections can help identify these problems early on. It’s advisable to have a professional inspect the system for any signs of wear and tear.

Shading Issues

Nearby trees can grow and eventually cast shadows on the solar panels, particularly during specific times of the day. It’s essential to monitor any potential shading issues and trim branches or foliage that may be obstructing sunlight to the panels.

Software Updates

For solar systems with digital components and inverters, software updates might be necessary from time to time. These updates can help in improving the efficiency, tracking, and overall operation of the solar installation.

Warranty Checks

Many solar panel manufacturers offer warranties that cover specific defects or guarantee a certain level of performance over time. Regularly reviewing these warranties and comparing them against the actual performance of the panels can provide peace of mind and, if necessary, a basis for warranty claims.


In conclusion, solar panels stand out for their promise of sustainability and cost-effectiveness. Yet, like any technological innovation, they require understanding and care to deliver their full potential. Through strategic positioning, informed by Ireland’s unique climate, one can maximise energy capture. But it doesn’t end there. Regular monitoring and maintenance are the unsung heroes, ensuring that these panels continue to shine in performance, just as they shine in promise.

As we embrace a greener future, it’s pivotal to recognise that the efficacy of tools like solar panels lies as much in our diligent upkeep as in their inherent capabilities. With the right knowledge and commitment, the sun’s abundant energy is ours to harness. Turn to professionals like Nusolas Energy for expert guidance.

Frequently Asked Questions

Why is the south-facing direction recommended for solar panels in Ireland?

In Ireland, the sun moves from southeast to southwest, with the maximum intensity towards the south. Thus, south-facing panels receive the most sunlight.

How often should I adjust the angle of my adjustable solar panels?

For best results, adjust the angle of your panels at least twice a year, accounting for summer and winter sun positions.

Can I install solar panels on a flat roof?

Yes, solar panels can be installed on flat roofs using tilted mounts, ensuring they capture maximum sunlight.

What if my roof faces west or east?

While south-facing roofs are ideal, east or west-facing roofs can also be efficient with proper positioning and angle adjustments.

How do obstructions affect solar panel efficiency?

Obstructions like trees or buildings can cast shadows on the panels, reducing the amount of sunlight they receive, which in turn lowers their efficiency.

Why is regular maintenance important for solar panels?

Dirt, debris, and other deposits can accumulate on solar panels over time, reducing their ability to capture sunlight. Regular cleaning ensures optimal performance.

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