Thinking about solar? Start here…
If you’re considering solar panels, one of the first questions you’ll probably ask is: “Is my home suitable?” The good news is that you may be surprised by the answer.
While some homes are more suited to solar than others, modern technology means there are more options and flexibility than you may think. Roofs do not have to face due south, homes do not need acres of roof space, and here in the South West we have enough daylight to make solar a worthwhile investment for many households.
This guide considers the key factors that determine whether your home is suitable for solar panels. While we’re considering that, we’ll also tackle some common misconceptions and help you understand what an installer will be looking for during a solar tech survey.
Is your home suitable for solar? What you need to know
We’re lucky to live in the South West, and most homes in Cornwall and Devon can benefit from solar panels.
The ideal property will have:
- A roof in good condition
- Ideally facing somewhere between east and west
- Minimal shading from trees or neighbouring buildings
However, every property is different. Even homes that don’t tick every box may still be suitable, which is why a professional assessment is always worthwhile.
Get in touch to arrange a survey.
1. Does your roof face the right direction?
One of the biggest myths about solar panels is that they only work on south-facing roofs. In reality, there isn’t a single ‘right’ direction, amn modern technology is much more flexible than even a decade ago.
While south-facing roofs typically produce the highest annual generation, east- and west-facing roofs can also deliver excellent performance.
Many homeowners choose to install panels across both roof slopes, producing electricity throughout more of the day rather than concentrating generation around midday.
North-facing roofs are generally less suitable, although this depends on the roof angle, available space and the property’s overall energy needs.
The key point?
- Don’t rule your home out simply because your roof isn’t south-facing.
2. How much roof space do you need?
The amount of roof space required depends on how much electricity you want to generate. A typical family home doesn’t necessarily need every inch of roof covered with panels.
During a survey, installers will consider:
- Available roof area
- Areas likely to be affected by shade
- Chimneys and roof windows
- Safety clearances
- Roof shape
- Future expansion possibilities
Modern solar panels generate significantly more electricity than older models, meaning fewer panels are often needed to achieve the same output.
The key point?
- Modern solar systems are flexible enough to work on different facing roofs.
3. Is the age of your roof a problem?
Not necessarily. But it should be checked before installation.
Solar panels are designed to last for decades, and reputable installers should check that the roof is in good condition.
If your roof is in a state where major repairs or replacement are likely, it may make sense to complete that work first.
A solid roof provides the best long-term foundation for your solar investment.
The key point?
- Make sure any installer checks how sound the roof is before installation.
4. Does shading matter?
Yes—but perhaps not as much as you think.
Trees, neighbouring buildings or chimneys can reduce the amount of electricity generated by solar panels, which rely on exposure to daylight.
However, today’s systems are much better at dealing with partial shading than older installations. Modern tech can help minimise the impact, allowing individual panels to perform independently rather than reducing the output of the whole system.
The key point?
- It’s important to assess how shading changes throughout the day and across the seasons.
Does West Country weather affect performance?
Let’s face it, South West weather can be mizzly and damp, but there’s good news – another common misconception is that solar panels only work on bright, sunny days.
They actually generate electricity from daylight – not just direct sunshine.
That’s one reason why Cornwall and Devon are well suited to solar. Alongside some of the UK’s highest sunshine levels, the region also benefits from long daylight hours through spring and summer.
Even when overcast, your system will continue to produce electricity, although at lower levels than on bright days.
The key point?
- Solar panels rely on daylight, not just direct sunshine. Cloudy, wet days aren’t a disaster, and your panels will still generate power.
6. Can solar panels be installed on slate roofs?
Yes.
Many homes across Cornwall and Devon have natural slate roofs, and our installers work with these regularly.
Different roof materials require different fixing methods, so choosing an experienced installation team is particularly important.
7. Do you need planning permission?
In most cases, solar panels can be installed under permitted development rights. There are exceptions, including some listed buildings, conservation areas and properties with particular planning restrictions.
If planning permission is required, we can explain the process and help you understand what is needed before work begins.
The key point?
- It’s better to check whether you need planning permission before going ahead.
8. What if you’re thinking about a battery?
No problem. Even if you decide not to install a battery immediately, it’s sensible to think ahead.
Many people opt to install solar panels first and add battery storage later as their needs or budget change.
But it makes sense to think about it at the outset. Planning for future expansion during the initial installation can make upgrades easier.
The key point?
- Thinking about your future needs can save money in the long-term.
9. What will our installer assess?
When we do a home survey, it looks at far more than your roof. It may also consider:
- Your current electricity usage
- Whether you work from home
- Electric vehicle ownership and charging needs
- Plans, such as installing a heat pump
- Household size and how many people live there
- Existing electrical installation
- Consumer unit
- Access for installation
The key point?
- The aim isn’t simply to install as many panels as possible; it’s to recommend a system that suits your home and the way you live.
Solar installation – common myths
“My roof doesn’t face south.”
The reality – it’s probably not a problem.
“It’s too cloudy in Cornwall.”
Solar panels generate electricity from daylight, not just sunshine.
“My house is too old.”
Age alone rarely prevents installation, but we will check your roofs first.
“Trees mean solar won’t work.”
Not necessarily. Every site should be assessed individually.
“Solar only works in summer.”
Generation varies throughout the year, but systems continue producing electricity in every season.
Solar installation – frequently asked questions
Can solar panels work on east or west-facing roofs?
Yes. While south-facing roofs often achieve the highest output, east- and west-facing roofs can still perform very well.
Do solar panels work on cloudy days?
Yes. Solar panels generate electricity from daylight, even when the sun isn’t shining directly.
Can I install solar panels if I have a slate roof?
In most cases, yes. Experienced installers regularly fit solar panels to slate roofs using specialist fixing systems.
Can I add a battery later?
Yes. We can fit a battery during installation or add battery storage at a later date.
How do I know if my home is suitable?
The best way is to arrange a professional survey, which will assess your roof, shading, electricity usage and future energy needs.
