get more from your home solar system
What is solar battery storage?
Adding battery storage to your solar panel system can optimise how you use your home-generated power. It offers greater energy independence and significant cost savings. Instead of exporting excess electricity to the grid, you can save it for when you need it most, like evenings and cloudy days.
Here’s why it might be time to invest in battery storage for your home solar system.
Understanding solar battery storage
Solar batteries act like a bank for your electricity. When your panels generate more power than you’re using, your battery system stores it for later use rather than sending this valuable energy to the grid. This stored power becomes available whenever you need it – after sunset, during power cuts or on days when your panels generate less power.
Think of it as capturing your daytime solar power and making it available 24 hours a day. Modern battery systems include sophisticated controls that manage power flow automatically, ensuring you use your stored energy in the most efficient way possible.
How solar batteries work
Your battery system connects to your solar panels and your home’s electrical system. When your panels generate electricity, smart controls direct power to where it’s needed most. First, they power your immediate household needs. Then, any excess electricity generated charges your battery. Only when your battery is full does power flow to the grid.
When your panels aren’t generating enough power – like after sunset – your battery system automatically provides the stored energy to your home. It happens seamlessly, with no interruption to your power supply. If your battery runs low, your home automatically draws power from the grid, ensuring you never run out of electricity.
Benefits of battery storage
Battery storage can significantly increase your solar system’s value. By storing excess power rather than exporting it, you’ll typically use 70-80% of your generated electricity instead of the 30-40% most homes achieve without batteries. This higher self-consumption rate means lower electricity bills and reduced reliance on grid power.
Many battery systems also provide backup power during grid outages, something standard solar panels can’t do. This feature proves valuable during winter storms or maintenance blackouts. Plus, with electricity prices likely to keep rising, storing your own power offers long-term protection against increasing energy costs.
Popular solar battery systems
Every home solar battery system brings different features, capacities and benefits. Here’s our guide to two of the most popular systems currently available that offer reliable performance and value:
Tesla Powerwall 3
Tesla’s latest home battery brings impressive capabilities to home energy storage. With a 13.5kWh capacity and the ability to deliver up to 11.5kW of power, it can run most homes during power cuts. Its weather-resistant design allows outdoor installation, while a built-in ‘Storm Watch’ feature automatically prepares for severe weather by ensuring full charge. Advanced monitoring through the Tesla app lets you track your energy use in real-time.
Alpha ESS G3
The Alpha ESS G3 offers flexible storage options through its modular design. Starting at 3.68kWh, you can add up to six 10.1kWh expansion modules for additional capacity as your energy needs grow. It’s perfect for homes wanting to start small and expand later. The system includes sophisticated energy management features and integrates seamlessly with existing solar installations. Its 10-year warranty and compact indoor design make it a popular choice.
Choosing the right battery system
Selecting the right solar battery depends on several factors. Consider your typical daily electricity use, your solar panel system’s size and your goals for battery storage. A typical UK home uses 8-10kWh of electricity daily, so a battery system should be sized to match your evening and overnight needs.
Installation space affects your choices, too. While some systems, like the Tesla Powerwall 3, mount on external walls, others need garage or utility room space. We can assess your home’s layout and recommend suitable options that meet your needs and space constraints.
Installation and setup
Battery installation requires professional expertise. Your installer will connect the battery to both your solar system and your home’s consumer unit, ensuring all safety systems work correctly. We’ll also set up your monitoring system and explain how to track your battery’s performance.
Most installations take 1-2 days, depending on system complexity and whether you’re adding batteries to an existing solar setup or installing everything together. We’ll handle all necessary paperwork, including building regulations and warranty registrations.
Looking to the future
Solar battery storage represents a significant investment in your home’s energy future. Systems typically cost between £7,000 and £9,000, depending on capacity and features. While this might seem substantial, rising energy costs mean payback periods are getting shorter – typically 7-10 years through reduced electricity bills and maximised solar use.
Government grants sometimes help with costs, though availability varies. We can advise on current incentives and help calculate your likely return on investment based on your specific energy use patterns.
Battery technology keeps improving, with new systems offering greater capacity and smarter features. Many homeowners start with a smaller battery and expand later as their needs grow or when adding an electric vehicle to their household.
Smart home integration offers exciting possibilities, too. Modern battery systems can work with home automation, EV chargers and even participate in grid services, potentially earning you extra income while helping balance the national grid.
How can we help?
Need advice about battery storage? Our team can help you understand your options and choose the right system for your home.
We’ll explain everything clearly, calculate potential savings and ensure you get a battery system that matches your needs and budget. Whether you’re adding a battery to an existing solar setup or planning a new installation, we’ll guide you through every step. Contact us today for a free consultation and quote.
