Solar & Battery Installation in Sevenoaks (TN13): 5.4kW Solar System Across Multiple Roof Faces
Recently, the Sunbright Energy team completed a solar and battery installation for a homeowner in Sevenoaks, Kent (TN13).
At first glance, this might look like a fairly standard residential solar installation. However, what made this project particularly interesting was the roof layout.
Unlike many homes where all of the solar panels can be installed on one large roof face, this property required the system to be split across multiple sections of the roof.
Many homeowners assume that if they don’t have one large, uninterrupted south-facing roof, solar simply isn’t an option. This project demonstrates exactly why that isn’t always the case.
With careful system design and the right combination of equipment, the homeowner is expected to generate almost 6,000kWh of clean electricity every year while significantly reducing their electricity bills and reliance on the grid.
System Size
Solar Generation
Total Savings
Project Overview
System Specifications
Location: Sevenoaks, Kent, TN13
Solar Array Size: 5.415kW
Solar Panels:
- 5 × Aiko Neostar 2S 465W All Black ABC N-Type Mono Panels
- 6 × Eurener Nexa 515W TOPCon All Black Bifacial Mono Panels
Inverter: Fox ESS H1 G2 6.0kW Hybrid Inverter
Battery Storage: Fox ESS EP12
Battery Capacity: 11.5kWh
Expected Annual Generation: 5,997kWh
Annual Property Consumption: 4,999kWh
Designing Around a Complex Roof Layout in Sevenoaks
One of the most common concerns we hear from homeowners is:
“My roof probably isn’t suitable for solar.”
Often, this assumption is based on the fact that the property doesn’t have one large, uninterrupted roof area available.
This Sevenoaks installation is a perfect example of why a professional design assessment is so important.
Rather than relying on a single roof face, we designed a system that utilised multiple roof elevations to maximise the available space.
By carefully considering roof orientation, available area, and expected generation, we were able to create a system capable of producing almost 6,000kWh of electricity every year.
This demonstrates that modern solar design is about far more than simply covering one roof with as many panels as possible.
Why Roof Complexity Doesn’t Always Rule Out Solar
Many homeowners still believe that solar panels only work on large, south-facing roofs.
In reality, advances in solar technology and system design mean that properties with:
- Multiple roof faces
- Different roof orientations
- More complex roof structures
can still achieve excellent results.
The key is ensuring the system is designed specifically around the property.
At Sunbright Energy, every installation begins with understanding:
- Roof orientation
- Available roof space
- Shading levels
- Household electricity usage
- Future energy requirements
This bespoke approach ensures homeowners receive a system tailored to their home rather than a one-size-fits-all solution.
The Solar & Battery System
Premium Aiko and Eurener Solar Panels
For this installation, we selected a combination of premium Aiko and Eurener solar panels.
The system includes:
- 5 Aiko Neostar 2S 465W panels
- 6 Eurener Nexa 515W TOPCon Bifacial panels
Both panel ranges are known for their high efficiency, strong performance, and sleek all-black appearance.
Using different panel types allowed us to optimise the available roof space while maintaining a premium aesthetic across the property.
Together, the array is expected to generate approximately 5,997kWh of clean electricity every year.
Fox ESS H1 G2 Hybrid Inverter
The solar array is connected to a Fox ESS H1 G2 6.0kW Hybrid Inverter.
The inverter plays a crucial role within the system, converting the DC electricity generated by the solar panels into usable AC electricity for the home.
The system can be monitored through the Fox Cloud platform, giving the homeowner full visibility over their energy generation and usage.
Fox ESS are always our inverter partner of choice due to their high efficiency systems, reliability and fantastic customer service. At Sunbright Energy, we’re the only Fox ESS Approved Partner in Kent, meaning we’re your local experts on all Fox ESS systems!
Fox ESS EP12 Battery Storage
To maximise self-consumption, the homeowner also chose a Fox ESS EP12 battery storage system.
With 11.5kWh of storage capacity, the battery allows excess solar generation to be stored during the day and used later in the evening when solar production has reduced.
Battery storage systems increase the amount of solar electricity consumed within the property rather than exported back to the grid.
This leads to greater financial savings by replacing expensive imported electricity with electricity generated by the homeowner’s own solar panels.
Annual Energy Breakdown
The system is expected to produce:
- 1,650kWh used directly from solar
- 535kWh stored from solar generation
- 3,777kWh exported back to the grid
Annual household consumption is expected to be:
- 1,650kWh supplied directly by solar
- 2,469kWh supplied by the battery
- 880kWh imported from the grid
These figures highlight just how much battery storage can increase self-consumption and reduce reliance on imported electricity.
Projected Energy Bill Savings
One of the biggest advantages of combining solar with battery storage is the potential for significant bill reductions.
Prior to the installation, annual electricity costs were estimated at:
£1,575 per year
Following the installation, those costs are expected to fall to:
£338 per year
That’s an estimated annual saving of:
£1,237
through solar generation and battery storage alone.
If you’d like an estimate as to how much solar panels, battery storage and off-peak tariffs could reduce your bills by, simply enter your postcode below to get an instant savings estimate.
Export Income & Smart Battery Optimisation
The homeowner is also expected to benefit from export payments.
Based on current export assumptions, the system is predicted to generate approximately:
£257 per year
through electricity exported back to the grid.
This reduces the effective annual electricity cost to:
Just £82 per year
However, the savings don’t stop there.
Because the Fox ESS battery supports smart charge and discharge schedules, the homeowner can also take advantage of cheaper overnight electricity tariffs.
By charging the battery during off-peak periods and using that electricity later, the system could generate an additional:
£296 per year in savings
Taking all of these factors into account, our projections suggest the homeowner could actually make:
A profit of approximately £215 in the first year
from their energy system.
Long-Term Financial Benefits
Solar should always be viewed as a long-term investment.
Over the projected 25-year lifespan of this system, we estimate total energy bill savings of:
£45,243
This demonstrates how even a standard-sized residential solar installation can deliver substantial long-term financial returns.
If you want to learn more about the long term savings possible with solar power, click here to learn more.
Thinking About Solar Panels In Sevenoaks?
This Sevenoaks project highlights an important point for homeowners considering solar.
You don’t need:
- One large roof face
- A perfect south-facing roof
- A simple roof layout
to benefit from solar panels.
With careful system design and the right technology, properties with more complex roof arrangements can still achieve excellent results.
If you’ve previously assumed that your roof isn’t suitable for solar, it may be worth speaking with an experienced installer before ruling it out completely.
Many homeowners are surprised by what is possible with modern solar technology and bespoke system design.
If you’re a homeowner in Sevenoaks, Kent, or the surrounding areas and would like to find out whether solar could work for your property, Sunbright Energy will be happy to give the support you need.
Simply click the button below to get in touch with our expert team today!
Meet The Owner
Oliver Crouch – Director
“I’m Oliver, the Director of Sunbright Energy. We’re a local, family-run business in the solar industry, which I’ve proudly led since its founding in 2014.
As a family business, we value personal connections and community. We’re driven to treat every customer with the respect and attention they deserve. Don’t hesitate to start your solar journey today – get in touch with Sunbright Energy for a service you can trust.”
Can solar panels be installed on multiple roof faces?
Yes. Modern solar systems, such as this installation Sevenoaks, can often be designed across multiple roof elevations to maximise generation and make the best use of available roof space.
Do solar panels need a south-facing roof?
No. While south-facing roofs often provide the highest generation, east, west, and even some north-facing roofs can still be suitable depending on the property.
Is battery storage worth it with a split solar array?
Yes. Battery storage allows homeowners to store excess solar generation and use it later, increasing self-consumption and reducing electricity imports.
How much electricity can a 5.4kW solar system generate?
Generation depends on factors such as orientation, shading, and location, but systems of this size can often generate around 5,000–6,000kWh per year.
How much can solar panels save in Kent?
Savings vary depending on energy usage, system size, battery storage, and electricity tariffs. Many homeowners can significantly reduce their energy bills by combining solar with battery storage.
