When installing a solar energy system, many opt for solar battery storage to maximise the benefits. Solar batteries store excess energy generated during the day, allowing you to use it once the sun goes down. Let's dive into why this is a smart addition to your renewable energy setup.
A solar battery can be a relatively inexpensive addition to any solar energy system, especially since you won’t pay 20% VAT on it due to UK government policy. This investment helps you save money in the long run by using renewable energy to power your home, regardless of the time of day.
Most systems produce more energy than you can use during daylight hours. If you’re home during the day, you can utilise that power immediately. However, if you’re out for large parts of the day, the power from your panels either goes to the grid for minimal financial return or isn't used at all. Hence, storing that energy for later use is a no-brainer for most people.
Solar batteries enable you to use the energy you produce at any time, reducing your reliance on external energy sources. Without a battery, the energy generated must be used immediately or sold back to the grid, often for pennies. Using stored, clean energy to power your home instead of relying on fossil fuels has significant environmental benefits.
Most batteries come with battery management software to ensure they charge and discharge efficiently, which extends their lifespan and ensures safety. If a battery doesn’t have its own management system, the inverter will handle the charging process. Currently, most residential solar installations use Lithium-Ion batteries.
Lithium-Ion batteries are popular for several reasons:
While not necessary for your solar panels to work, having a battery storage system is highly beneficial. It allows you to use self-generated solar energy in the evening, reducing waste and maximising your investment. Without batteries, excess energy generated during the day can only be sold back to the grid at low rates.
The size of the battery you need depends on your home and electricity usage. Here’s a rough guide:
One-bedroom flat or bungalow: 2 kWh
Two-bedroom terrace house: 4 kWh
Three-bedroom semi-detached house: 8 kWh
Four-bedroom detached house: 9.5 kWh
Some companies recommend having twice as much storage as your solar power generation capacity, but this isn't always necessary. A balanced approach ensures efficient energy use and cost-effectiveness.
Costs vary based on brand, materials, and build quality. On average, prices range from £400 to £500 per kWh of storage capacity. For example, a Greenlinx 3.2 kWh battery is around £1500, while a Tesla Powerwall 2 (13.5 kWh) is approximately £9500.
Energy Usage: Consider how and when you use your power. If your home experiences peak usage in the morning and evening, a battery can help you utilises stored energy during these times.
Cost: Evaluate whether the savings from reduced energy bills justify the initial investment in battery storage.
Space: Ensure you have adequate space to store the battery, either inside your home or in an outdoor cabinet.
Yes, you can have multiple batteries to increase storage capacity. Some systems allow for easy expansion by adding more units as needed.
Solar batteries require minimal maintenance but should be kept at optimal temperatures and checked regularly for damage or loose connections.
Using solar battery storage can significantly reduce your electricity bills and reliance on the grid. Additionally, it contributes to a reduction in carbon emissions by utilising clean energy.
At Fusion Solar UK, we're here to help you navigate the world of renewable energy and make informed decisions about your solar and battery storage needs. If you have any specific questions, feel free to reach out to us!
For more detailed information on battery options and pricing, contact us at Fusion Solar UK.
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