Edan Power
Solar Energy • UK Guide

7 Mistakes to Avoid When Installing Solar Panels in the UK

Don't let a simple error ruin your renewable energy dreams. From ignoring shade to choosing the wrong installer, we reveal the 7 critical mistakes UK homeowners make when going solar—and how to avoid them with EdanPower.

5 min read 10 Apr 2026 24 views

7 Mistakes to Avoid When Installing Solar Panels in the UK

The transition to renewable energy is one of the smartest moves a UK homeowner can make in 2026. With energy prices remaining volatile and the technology more efficient than ever, solar power offers a clear path to energy independence.

However, at EdanPower, we’ve seen many homeowners fall into avoidable traps that reduce their return on investment (ROI) or lead to long-term technical headaches. To ensure your journey to green energy is smooth and profitable, avoid these seven common pitfalls.

Choosing an Installer Based Only on Price

It’s tempting to go with the lowest quote you find. However, "cheap" often means sub-par materials or inexperienced labor. In the UK’s damp and windy climate, a poor installation can lead to roof leaks or electrical faults.

The Fix: Look for established companies like EdanPower that offer comprehensive warranties (up to 30 years) and have a proven track record of thousands of successful UK installations.

Choosing an Installer Based Only on Price

Ignoring the Impact of Shading

Even a small amount of shade from a chimney, a neighbor's tree, or a vent pipe can significantly drop the output of an entire string of panels. Many people assume "it’s only a small shadow," but in the world of photovoltaics, it can be a major "bottleneck."

The Fix: Ensure your installer performs a professional shading analysis. We use advanced software to map sunlight patterns across your roof specifically for the UK's lower sun angles in winter.

Ignoring the Impact of Shading
Overlooking Solar Battery Storage

Overlooking Solar Battery Storage

Generating power is only half the battle; using it is the other. In the UK, we often generate the most power when we aren't home (mid-day). Without a battery, that excess energy is sent back to the grid for a low "Smart Export Guarantee" (SEG) rate, and you’ll end up buying it back at a higher price at night.

The Fix: Pair your system with a solar battery storage solution. This allows you to store your free daytime energy for use during peak evening hours, maximizing your savings by up to 90%.

Incorrect System Sizing

Some homeowners install a system that is too small for their needs to save money upfront, while others over-invest in a system that produces more than they can ever use or store.

The Fix: Your system should be sized based on your annual kWh usage and your future plans (e.g., getting an Electric Vehicle or a Heat Pump). At EdanPower, we provide a bespoke energy profile to find your "Goldilocks" zone.

Incorrect System Sizing

Forgetting the Roof’s Condition

Installing a 25-year solar system on a roof that needs replacing in 5 years is a logistical nightmare. You will have to pay to have the panels removed and reinstalled later.

The Fix: Have your roof inspected before installation. If it needs repairs, do them now. Solar panels actually protect the tiles they cover, but the foundation must be solid.


Not Understanding Planning Permission and Regulations

While most UK solar installations fall under "Permitted Development," there are strict exceptions for listed buildings, conservation areas, or panels that protrude too far.

The Fix: Work with an expert team that handles the red tape. EdanPower ensures all installations meet local building regulations and G98/G99 grid connection requirements.

Neglecting Maintenance and Monitoring

"Set it and forget it" is a dangerous mindset. While solar is low maintenance, dirt, bird droppings, or a faulty inverter can quietly reduce your efficiency without you knowing.

The Fix: Use a monitoring app. All EdanPower customers get access to real-time data. If your output drops unexpectedly, you’ll know immediately and can take action.

Neglecting Maintenance and Monitoring

Why Choose EdanPower?

As a leader in the UK's green energy revolution, EdanPower focuses on engineering, not just sales. We offer:

Bespoke UK Engineering: Optimized for British light levels and roof types.

30-Year Warranties: Peace of mind for decades.

Lowest Price Guarantee: We will beat any like-for-like national quote by at least £100.

Expert Local Teams: Over 50,000 homes powered and counting.

Frequently Asked Question

While the UK's frequent rain helps wash away dust, we recommend a professional check every 1–2 years to remove stubborn bird droppings or moss that can block cells.


Yes, but it is often cheaper to install them together due to labor costs and VAT benefits. "AC-coupled" batteries can be added to existing systems easily.


Monocrystalline panels are generally the best choice for the UK climate as they perform better in the low-light and overcast conditions typical of our winters.


A standard residential installation usually takes just one to two days.


Solar Specialists

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What Our Customers Say

Real review from our happy customers

Julie Marsons

We had EWI, Central Heating & Loft Insulation done by Edanpower Contractors, the workmen were excellent from start to finish. All the Contractors were very polite, hard workers and all the work was completed to a very high standard! We would use them again and highly recommend them!

Imdad Chaudhry

I had solar panels installed nearly 10 years ago (4kWh). Recently, I decided to have a heat pump installed and as a consequence had a battery installed. Once the battery and heat pump were installed, I realised that my solar installation would not be sufficient and approached Edanpower to install more solar panels (another 8kWh). Although the existing panels and inverter caused an issue with configuration into the battery, the engineer was able to configure it all so I can now see all the panels and the power being generated. I'm pleased with the service provided by Edanpower and would not hesitate to use them for any other solar panel/battery installation.

Chelsea

Rakesh was extremely helpful from the start, patient while I waited for funding and super speedy when it came to completing the work. Edan Power went above and beyond and jumped through hoops to getting us where we are today (a solar run company). The installation team was also extremely efficient and friendly. Would defiantly recommend :)

Hassan Suriya

Excellent Job completed by Edan Power for our commercial solar install. Their fitting team are a credit to the company for working tirelessly to iron out any issues as it was a challenging install. A big thank you to Gugs for managing the whole project and making sure I was happy with the system.