We recently completed a solar PV and battery storage installation for a homeowner in Sevenoaks, Kent, helping them take greater control of their energy usage while significantly reducing their reliance on electricity from the grid.
The property had an estimated annual electricity consumption of 9,972 kWh, based on the homeowner’s electricity bill. With such a high level of electricity usage, solar panels combined with battery storage offered an excellent opportunity to generate and store renewable energy on-site.
The Solar PV System
The installation consists of a 5.85 kWp solar PV system, made up of:
- 13x Aiko N-Type ABC Neostar 450W solar panels
- 9.4 kWh Hanchu ESS battery storage
- Bird mesh protection
- G99 application, MCS certificate and electrical certifications
- Two sides of scaffold
- Full installation and commissioning
The high efficiency Aiko N-Type ABC Neostar 450W panels were selected to maximise solar generation while making effective use of the available roof space.
The 9.4 kWh Hanchu ESS battery provides additional flexibility by storing surplus electricity generated during the day. This stored energy can then be used when solar generation is lower, such as during the evening, helping the homeowner increase their use of self-generated electricity.
Estimated Solar Generation
The system is expected to generate approximately 5,850 kWh of renewable electricity per year. With annual electricity consumption estimated at around 9,972 kWh, the solar installation has been designed to make a substantial contribution – over 58% – towards the property’s energy requirements.
Rather than relying entirely on electricity from the grid, the homeowner can generate clean electricity at home and use battery storage to make more of that generation available when it is needed.
Predicted Financial Savings
The installation is predicted to deliver £1,831 in savings during the first year, with an estimated payback period of just 6 years. Over the minimum 30 year lifespan of the system, it is predicted to provide total savings of approximately £165,958.
The combination of solar generation and battery storage is particularly valuable for a property with relatively high annual electricity consumption, as it provides greater opportunity to use the electricity generated by the solar panels rather than purchasing as much electricity from the grid.
For this property, battery storage was particularly important due to the limited available roof space and the customer’s high electricity consumption. While the solar PV system is expected to generate around 5,850 kWh of electricity each year, solar generation alone may not always meet the property’s daily energy requirements. The 9.4 kWh battery allows surplus solar energy to be stored for use when it is needed and can also give the customer access to time-of-use tariffs, enabling them to charge the battery with cheaper off-peak grid electricity when appropriate. This helps maximise the value of the system and reduce reliance on higher-cost electricity from the grid.
Reducing Carbon Emissions
As well as reducing electricity costs, the Sevenoaks installation will help the homeowner reduce their carbon footprint. The system is expected to reduce carbon dioxide emissions by approximately:
- 1.17 tonnes of CO₂ per year
- 35.1 tonnes of CO₂ over 30 years
- Equivalent to planting approximately 55 trees every year
By generating renewable electricity at home, the system will continue to provide environmental benefits throughout its expected operating life.
System Summary
| Location | Sevenoaks, Kent |
| System size | 5.85 kWp |
| Solar panels | 13x Aiko N-Type ABC Neostar 450W |
| Battery storage | 9.4 kWh Hanchu ESS |
| System protection | Bird mesh |
| Predicted year 1 savings | £1,831 |
| Estimated payback period | 6 years |
| Predicted 30 year savings | £165,958 |
| Expected CO₂ reduction per year | 1.17 tonnes |
| Expected CO₂ reduction over 30 years | 35.1 tonnes |
| Equivalent to trees planted | 55 trees per year |
A Complete Solar and Battery Installation
At SolarTherm UK, we provide a complete solar PV installation service, taking care of the technical, regulatory and certification requirements as part of the project. For this Sevenoaks installation, the project included two sides of scaffold, bird mesh protection, G99 application, MCS certification and all required electrical certificates, providing the homeowner with a complete end to end installation with no hidden costs.
The Result
The new 5.85 kWp solar PV system and 9.4 kWh Hanchu ESS battery give this Sevenoaks homeowner a powerful combination of renewable generation and energy storage.
With around 5,850 kWh of predicted annual solar generation, £1,831 predicted first year savings, a 6 year payback period and projected 30 year savings of £165,958, the installation is designed to deliver substantial long term financial and environmental benefits.
For homeowner in Sevenoaks, Tunbridge Wells, Ashford or elsewhere across Kent or the wider South East, solar panels and battery storage can be an effective way to reduce electricity costs, increase energy independence and take back control of your energy usage.
Contact SolarTherm UK today for a free, no obligation quote and design, tailored to your property, usage and future energy needs. No hard sell, just honest, expert advice – and the time you need to make an informed decision.
Your home. Your energy. Your future.
