Solar & Battery Installation in Bexley (DA14)
For homeowners in Bexley and the south east looking into solar and battery storage, one of the biggest questions is always the same: what do the numbers actually look like in real life?
This recent installation in DA14, Bexley is a strong example of how a well-designed solar and battery system can dramatically reduce electricity costs, lower reliance on the grid, and create long-term financial savings.
With rising energy prices continuing to impact households across the UK, this system was designed to give the homeowner far more control over how and when they use electricity – while also maximising the value of every unit generated.
Here’s a full breakdown of the installation, projected performance, and expected long-term returns.
System Size
Solar Generation
Total Savings
Solar & Battery Installation in Bexley, London
For this Bexley project, we installed a complete solar and battery storage system designed to balance performance, efficiency, and long-term savings.
The installation included:
- 11 × Aiko Neostar 2S 465W solar panels
- 1 × Fox ESS H1 G2 5.0kW Hybrid Inverter
- 1 × Fox ESS EP12 11.5kWh battery storage system
The all-black panel design gives the system a sleek, low-profile appearance, while the N-Type cell technology helps improve efficiency and long-term performance.
The hybrid inverter allows the solar panels and battery storage system to work together seamlessly, intelligently managing generation, storage, and household usage throughout the day.
With 11.5kWh of Fox ESS battery storage included, the homeowner can store excess solar energy generated during the day and use it later in the evening — reducing reliance on expensive imported electricity from the grid.
Fox ESS remain our battery & inverter partner of choice, with Sunbright Energy being the only Fox ESS approved partner in Kent. Learn more about Fox ESS here.
How Much Energy Will the System Generate?
The system is projected to generate approximately:
- 4,684 kWh of electricity per year
That generation is expected to be used as follows:
- Used directly in the property: 1,745 kWh
- Stored and later used via the battery: 628 kWh
- Exported back to the grid: 2,271 kWh
Household Energy Usage Breakdown
The property’s annual electricity consumption is estimated at:
- 5,900 kWh per year
This demand is expected to be covered by:
- Direct solar usage: 1,745 kWh
- Battery usage: 2,881 kWh
- Electricity imported from the grid: 1,274 kWh
What This Means in Practice
For the homeowner, this means a significant reduction in dependence on traditional energy suppliers.
Instead of relying almost entirely on grid electricity, a large proportion of the property’s energy needs can now be covered by self-generated solar power and stored battery energy.
This becomes particularly valuable during evenings, when electricity prices are often at their highest.
From £1,859 Electricity Bills, to a Potential First-Year Profit
One of the most important parts of any solar installation is the financial impact – and this project delivers strong projected results.
Based on current tariff assumptions, the homeowner’s electricity costs are expected to fall dramatically.
Electricity Bill Reduction
- Previous annual electricity bill: £1,859
- Projected annual bill after installation: £589
- Estimated annual saving: £1,270
Export Income
The system is also expected to generate export income through excess electricity sent back to the grid.
- Estimated export earnings: £158 per year
This reduces the property’s effective electricity cost even further.
Effective Annual Electricity Cost
Once export income is factored in, the homeowner’s effective annual electricity cost is projected to fall to:
- £431 per year
But the savings don’t stop there… introducing Battery Management…
How Battery Management Increases Savings Further
One of the most valuable features of modern battery storage systems is the ability to take advantage of smart energy tariffs.
This is known as battery management.
What Is Battery Management?
Battery management allows the system to:
- Charge the battery when electricity prices are low
- Use or export stored electricity when prices are higher
For example, the homeowner may choose to:
- Import cheap electricity overnight
- Store it in the battery
- Use that stored energy during peak-rate periods
Without this functionality, the battery would only store excess solar generation, meaning additional savings opportunities would be missed.
Additional Savings with Smart Tariffs
Using battery management, the projected additional savings for this property could reach:
- Up to £446 per year
As a result, the homeowner could potentially achieve:
- A first-year profit of approximately £15
Returns are not guaranteed and will vary depending on electricity usage patterns and tariff selection.
Every home’s solar savings are different, as they’re very dependant on your home, your usage, and your goals.
To give you a better idea, we’ve developed our very own Sunbright Energy Solar Savings Calculator. Simply enter your postcode below to get a tailored savings estimate for your property:
Why Battery Storage Makes Such a Big Difference
Battery storage has become one of the biggest drivers of solar performance and savings in UK homes.
Rather than exporting all unused daytime solar generation back to the grid immediately, the homeowner can store it and use it later when the property needs it most.
This increases self-consumption and reduces expensive electricity imports.
Reduced Grid Dependence
Compared with a solar-only setup, adding battery storage reduces grid dependence by an additional:
- 11%
Overall, the system is expected to achieve:
- Around 40% reduction in grid dependence
Meaning the homeowner should only need to purchase around:
- 60% of electricity from the grid
As energy prices continue to fluctuate, reducing exposure to the grid becomes increasingly valuable.
£44,000+ Projected Lifetime Savings in Bexley
While the short-term savings are strong, the long-term figures are where solar and battery systems become especially compelling.
Over a projected 25-year period, this system is estimated to deliver:
- Total financial savings: £44,885
After accounting for system cost, the projected net benefit is:
- £33,935
For many homeowners, this is what makes solar less of a short-term purchase and more of a long-term investment in the property.
It provides ongoing protection against rising energy prices while continuing to reduce household running costs year after year.
Is a Similar System Right for Your Home?
The type of system we installed here in Bexley is particularly well suited to:
- Homeowners in Kent and the South East
- Properties with medium-to-high electricity usage
- Households interested in battery storage and smart tariffs
- Homeowners looking to reduce long-term energy costs
Every home is different, but this project gives a strong indication of what can be achieved with the right system design and energy usage strategy.
See What Solar Could Look Like for Your Property
If you’re considering solar panels and battery storage for your home, the best place to start is by understanding what a system could realistically deliver for your property.
At Sunbright Energy, our Solar Savings Calculator can provide an estimate based on your energy usage, roof space, and potential battery setup – helping you understand projected savings before making any decisions.
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.”
How much can solar panels save in Bexley, London?
Savings vary depending on energy usage and system size, but in this case the homeowner is projected to reduce annual electricity costs by around £1,270, with additional savings available through battery management.
Is battery storage worth it with solar panels in the UK?
For many homeowners, yes. Battery storage allows you to use more of the electricity your solar panels generate, reducing reliance on the grid and increasing long-term savings.
How much electricity does a 5kW solar system generate?
A typical 5kW solar system in the UK can generate around 4,000–5,000 kWh per year depending on roof orientation, shading, and location.
Can solar panels reduce reliance on the grid?
Yes. In this installation, the combination of solar panels and battery storage is projected to reduce grid dependence by around 40%.
How long does it take for solar panels and batteries to pay for themselves?
Payback periods vary depending on system size, energy usage, tariffs, and battery usage. Systems with battery storage and smart tariff optimisation can often achieve significantly faster returns over their lifetime.
