Case Study
How Mrs Jenkins Reduced Energy Bills and Carbon Emissions with a Whole Home Retrofit in South Wales
Project Type
Residential Renewable Energy Upgrade
Location
South Wales
System
A Smarter Renewable Energy Upgrade for the Home
Mrs Jenkins was looking to reduce rising energy costs while making her home more energy efficient and environmentally friendly. Living in a detached property in South Wales, she wanted a complete renewable energy solution that would lower reliance on the grid and future-proof the home against increasing energy prices.
IR Energy designed and installed a whole home retrofit combining solar PV, battery storage and an Octopus Cosy heat pump system. The setup allows the property to generate clean electricity, store surplus energy and use efficient renewable heating throughout the year.
Solar, Battery Storage & Heat Pump Working Together
To maximise efficiency, the installation combines renewable electricity generation with smart energy storage and low-carbon heating technology.
The solar PV system generates electricity throughout the day, while the Fox battery stores excess energy for use during evenings and periods of lower solar generation. The Octopus Cosy heat pump then uses stored solar energy or low-cost electricity to provide efficient home heating and hot water.
Installation Specification
- 10 x AIKO Solar Panels
- 5kW Fox Inverter
- 1 x Fox EP11 10.36kWh Battery Storage System
- Octopus Cosy Heat Pump – 9kW
This carefully designed renewable energy system enables the household to maximise self-consumption while reducing dependence on grid electricity. By combining solar PV with battery storage and efficient heating technology, the property benefits from improved long-term energy performance and lower running costs.
Annual Performance & Carbon Savings
ESTIMATED ANNUAL PERFORMANCE
- 4.65kW Solar PV System
- Estimated annual generation: 4,264 kWh
- Annual CO₂ reduction: 883 kg
- Estimated annual energy value: £4,850.62
The completed installation delivers significant environmental and financial benefits. Annual carbon savings are equivalent to removing approximately 3,153 miles of car travel each year or the amount of CO₂ absorbed by around 40 mature trees.
Smart Control & Monitoring via the Octopus App
Mrs Jenkins can easily monitor and control the renewable energy system directly through the Octopus Energy app, giving full visibility over heating performance, energy usage and electricity costs in real time.
KEY FEATURES
- Adjust heating schedules and temperatures remotely
- Monitor heat pump performance alongside off-peak tariffs
- Track electricity usage and stored battery energy live
- Access energy insights to help reduce running costs
This smart integration ensures the heat pump, solar panels and battery storage system work together efficiently while helping keep household energy costs as low as possible.
Conclusion
Mrs Jenkins now benefits from a fully integrated renewable energy system that combines solar PV, battery storage and efficient heating technology to reduce energy bills and carbon emissions.
This South Wales whole home retrofit demonstrates how homeowners can future-proof their properties with smart renewable energy solutions while improving efficiency, comfort and long-term energy independence.
Take the Next Step
Transform your home like Mrs Jenkins did with solar PV, battery storage and renewable heating solutions designed to lower energy bills and reduce carbon emissions.
Discover how a whole home retrofit can improve energy efficiency, increase energy independence and future-proof your property against rising energy costs.
Contact IR Energy today to explore smarter renewable energy solutions for your home in South Wales.
