Is Battery Storage Worth It in 2026?
What a battery actually changes about a solar installation, who gets the most out of one, and how to tell whether the numbers work for your home.
Battery storage is one of the fastest growing areas of the UK renewable energy market. While solar panels generate electricity during daylight hours, battery systems allow homeowners to store excess generation and use it later when needed.
But is battery storage worth the investment?
How Does Battery Storage Work?
During the day, your solar panels may produce more electricity than you’re using.
Without a battery:
- Excess energy is exported to the grid.
With a battery:
- Excess electricity is stored.
- Available for use in the evening.
- Reduces electricity imports from the grid.
Why Are Batteries Becoming More Popular?
Electricity costs remain relatively high. The current Ofgem average electricity rate is approximately 26.11p per kWh. Every unit of solar electricity stored and later used avoids purchasing electricity at these rates.
Example Scenario
A typical solar only household may use around 40-50% of generated electricity directly. With battery storage, self-consumption can often increase to 70-80%. This means more free solar energy is used within the home and less is exported.
Additional Benefits
Backup Capability
Some battery systems can provide limited backup power during grid outages when installed with appropriate equipment.
Off-Peak Charging
Many homeowners now combine batteries with time-of-use tariffs. Electricity purchased overnight at cheaper rates can be stored for use during peak periods.
Is It Worth It Financially?
For homeowners with:
- Solar panels
- High evening electricity consumption
- Electric vehicles
- Heat pumps
Battery storage often provides the greatest value.
The exact payback depends on system size, electricity consumption and chosen tariff, but batteries are becoming increasingly attractive as energy prices remain elevated.
Is Battery Storage Right For You?
Every property is different. At Alpha Energy Group, we assess your energy usage and existing solar generation to determine whether battery storage would provide a worthwhile return on investment.