Can I have Solar Panels on my house?
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At The Little Green Energy Company (TLGEC), one of the most common questions we get is: “Is my house actually suitable for solar panels?”
The short answer is: Yes, most UK homes are highly suitable.
However, as the UK solar market evolves, determining suitability is no longer just about looking at your roof orientation.
It’s also about other the structural, regulatory, and technical suitability factors.
In this guide, we will walk you through these factors, and more.
1. Roof orientation
The ideal roof for solar panels is directly south-facing at a 30-degree pitch.
This combination maximizes the intensity and duration of sunlight captured throughout the day.
However, real-world suitability is far more flexible:
East/West roof splits
While south-facing roofs generate a single midday peak, East/West facing roofs are increasingly popular.
An East/West split generates power earlier in the morning and later into the evening, matching the typical daily “double-peak” of family energy use.
Southeast & Southwest facing roofs
These orientations perform incredibly well, capturing almost as much energy as a true south-facing roof.
Flat roofs & ground mounts
If your main roof isn’t suitable, we regularly install solar panels on flat garage roofs using angled mounting frames, or on ground-mounted A-frames in larger gardens.
2. Roof space
To determine if your roof is large enough, we calculate your usable roof area against your household’s lifestyle and energy demands.
At TLGEC, we often recommend SunPower monocrystalline panels.
These are efficient and robust panels, performing exceptionally well even during the South East’s cloudier winter months.
A single SunPower solar panel, for example, is 1 metre wide by 1.6 metres high.
Minimum system size
To power a home effectively, we often recommend a minimum of 4 panels is required (taking up about 6.4 square metres of roof space).
Standard domestic systems
Most UK homes require between 4 to 8 panels (typically a 3 kW to 4 kW system). This size is perfect for standard residential electricity demands.
Electrifying the “hidden 80%”
Traditional fossil-fuel heating and transport make up around 80% of our domestic energy footprint. And some of these systems waste up to two-thirds of their energy as heat.
(It should be noted here that modern gas boilers are about 90% efficient.)
If you plan to transition to a heat pump or charge an EV, your energy needs will scale up.
To power this clean transition, we often design larger 5 kW to 6 kW systems. These require 12 to 16 panels (typically 20 to 26 square metres of roof space).
3. Aesthetic Choice
Many homeowners worry that solar panels will disrupt their property’s appearance.
Fortunately, modern design options ensure that solar panels can actually enhance your home’s aesthetic appeal.
On-roof systems (standard)
Panels are mounted slightly above your existing tiles using sleek, low-profile black brackets and framing.
In-roof (integrated) systems
The solar panels are set directly into the roofline, sitting flush with your surrounding tiles. Integrated solar acts as both the weatherproofing layer and the power generator.
This is a fantastic option if you are planning a new build, a complete re-roofing project. Or if you live in a historically sensitive area of Kent.
4. Roof type & condition
A premium solar PV system is a long-term asset designed to operate for a minimum of 25 to 30 years.
Because of this incredible longevity, your roof must be structurally sound enough to support the system throughout its lifetime.
During our comprehensive physical survey, we look at:
Structural dead load
Solar panels and mounting equipment add weight to your roof. Modern trussed roofs can easily handle this load.
But older ones require a structural check. These include:
- Historic timber-framed
- Tile-hung
- Listed Kentish cottages
Roof material
Solar can be installed on almost any roof tile, including clay, slate, and concrete.
However, if your roof is nearing the end of its natural life, tile repairs or re-roofing is recommended.
This is to ensure your roof matches the 30-year lifespan of the technology.
Our installation standards are fully aligned with the up-to-date MCS quality certifications.
Shifting the focus from mere paperwork to rigorous, on-site installation quality, these standards ensure your system is built to last
5. Planning permission
For the vast majority of UK homes, installing residential solar panels falls under Permitted Development. This means you do not need to apply for formal planning permission.
However, the South East is home to some of the country’s most beautiful historic and protected landscapes.
You may face certain aesthetic restrictions if your home is located in:
- An Area of Outstanding Natural Beauty (AONB) (such as the High Weald or Kent Downs)
- A Conservation Area (e.g., designated zones in Sevenoaks, Maidstone, or Goudhurst)
- A Listed building
In these areas, local planning authorities often require specific design adjustments. For example, as utilising flush, all-black integrated in-roof panels to preserve the historic clay tile roofline.
6. Grid Suitability & DNO Connection Regulations (G98 vs. G99)
Every grid-connected solar system in the UK must be registered with the local Distribution Network Operator (DNO). This is the body responsible for managing the local electricity grid infrastructure.
Whether your home is suitable for immediate installation depends on the capacity of your local grid connection:
G98 “Connect and Notify”
If your system’s export capacity is 3.68 kW or less per single-phase connection, it falls under G98 rules.
Your system can be installed immediately, and we simply notify the DNO within 28 days of commissioning.
G99 “Prior Consent”
For larger, high-output systems (such as a 5 kW or 6 kW system designed to power an EV and a heat pump), a G99 application must be submitted to the DNO before we can install the system.
The DNO assesses the local grid cables to ensure they can handle the potential export power.
If the local grid is constrained, they may require us to limit your export capacity or carry out a grid connection upgrade.
7. Smart Suitability
In 2026, home suitability is no longer restricted by roof space alone.
By pairing solar panels with a smart domestic battery (such as the Tesla Powerwall 3, Fox ESS, or Sigenergy SigenStor), you transform a simple solar system into a resilient, smart home energy microgrid.
Smart home integration unlocks two major benefits:
‘The Energy Pension’
Investing in home solar and battery storage acts as a productive asset, i.e, an “energy pension”. This can deliver consistent returns of around 11% a year, depending on your tariff and usage.
By storing your free daytime generation and utilizing smart tariffs, you protect yourself from volatile market pricing.
True energy resilience
The UK national grid is under increasing strain due to aging fossil-fuel infrastructure and rising demand.
Some industry experts (for example, Katherine Porter) warn that the UK faces a chance of rolling blackouts or energy rationing over the coming decade.
(It’s also worth noting the most recent official assessment (National Energy System Operator, winter 2025/26) says blackout risk is at its lowest since before Covid.)
Home battery storage acts as a life-safety backup, ensuring your home remains powered even if the local grid goes dark.
Ready to find out if your home is ready?
Every house is unique, and local factors always play a key role in designing the perfect solar energy system.
The best way to determine your home’s suitability for a solar panel installation is with a free, no-obligation home survey from Kent’s award-winning renewable energy specialists.
Our friendly Goudhurst-based team will assess your roof structure, evaluate your local grid capacity, and design a custom, MCS-compliant system tailored entirely to your lifestyle and energy goals.
