A realistic example of adding battery storage to a solar PV system in Devon or Cornwall.
Property Type
4-bed Detached House
System
Solar PV + Battery Storage
Roof Orientation
Good (South or South-West facing ideal)
Key Factor
Self-consumption depends on usage patterns and system design
Many homeowners in Devon and Cornwall are interested in solar PV to reduce electricity bills and increase energy independence. Adding battery storage is becoming more common as it allows households to use more of the solar energy they generate during the day.
When a roof has good orientation and minimal shading, we often suggest considering battery storage alongside solar PV. This can increase how much of the generated solar power is actually used in the home rather than exported to the grid. However, the financial benefit depends heavily on household electricity usage patterns and future export tariffs.
Homeowners often see a reduction in electricity bills, particularly during spring and summer when solar generation is high. The scale of savings varies depending on how much energy is used during the day.
Battery storage allows households to use a higher percentage of the solar energy they generate during the day, rather than exporting it to the grid at a lower rate.
"We’re happy with the system. It’s good knowing we’re using more of our own power, though the actual savings depend on our daily usage patterns."
Adding battery storage to a solar PV system can increase self-consumption. Even roofs that aren’t perfectly south-facing can still deliver worthwhile results when the system is well designed. The financial case depends on your electricity usage patterns and how export tariffs develop over time.
Use our Solar Passport to explore realistic generation and savings for your property.