Battery Backup for Solar Power Systems

Wondering how to make the most of your solar panels after sunset? This article explains why a battery backup system is an essential upgrade for any UK homeowner. Discover how you can save money and enjoy uninterrupted power by storing your surplus solar energy for when you need it most.

Connor Braddy

7/16/20253 min read

The Essential Guide to Power Your Home Day and Night

Solar panels have become a common sight on rooftops across the UK, and for good reason. They are a fantastic way to generate your own clean, renewable electricity. But what happens when the sun goes down, or on those famously cloudy British days? To truly make the most of the energy you generate, you need a way to store it.

The answer lies in a solar battery backup system. It is the essential component that unlocks the full potential of your solar panels, allowing you to store surplus energy for when you need it most. By adding battery storage, homeowners can capture the electricity generated by their solar panels during the day and use it in the evening, maximising their energy independence and reducing reliance on the grid.

How Does a Solar Battery System Work?

Think of a solar battery as your personal energy reserve.

Generation: During the day, your solar panels convert sunlight into electricity. Your home uses what it needs at that moment, and any energy left over is the surplus.

Storage: Instead of exporting this valuable surplus power back to the grid, a home battery system like the Volta Eco PowerPod intelligently stores it. While government schemes like the Smart Export Guarantee (SEG) allow you to sell your excess energy, you typically save significantly more money by storing and using it yourself, avoiding the need to buy expensive electricity later on.

Usage: When your solar panels are no longer generating power in the evening, your fully-charged battery seamlessly kicks in to power your home. It can even be programmed to charge from the grid during cheap, off-peak hours, further maximising your savings. A complete, all-in-one system like the PowerPod ensures perfect compatibility between the battery, inverter, and software, making the entire process effortless.

"We saw solar panels as half the solution. They produce power but the real challenge is what happens after dark. A home battery doesn’t just store energy; it finishes the solar job, delivering clean power 24/7 and turns a simple install into a real asset for the family"

Peter Marshall
Technical Founder
Volta Eco Systems

The Solution: The PowerCore Commercial Battery System

The Volta Eco PowerPod is a powerful, all-in-one residential battery system designed to match industry-leading quality and performance. It is the perfect partner for any home solar installation.

  • All-in-One Design: With a built-in solar inverter and backup gateway, the PowerPod is a sleek, compact unit that simplifies installation and saves space.

  • Safe and Reliable: Built with the latest LFP battery cells from CATL, the world’s biggest battery maker, the PowerPod is designed for a lifespan measured in decades. It features a four-layer protection design, including a built-in fire suppression system for complete peace of mind, and allows for easy replacing of batteries or components as needed.

  • Powerful and Scalable: The high-voltage system provides a range of capacities between 5-30kWh, making it suitable for the average home’s daily electricity needs. For larger households or higher demands, you can connect up to five units in parallel to supply more energy and meet your home’s unique energy needs.

  • Intelligent Control: With the ECOS app, you can automate your energy savings through real-time price monitoring, track your energy flow, and even optimise your EV charging.

  • Quiet and Durable: Operating at a near-silent < 25 dB and rated IP65 for weather resistance, the PowerPod works efficiently whether it is installed indoors or out.

Proper wiring is essential for safe installation and optimal performance of the PowerPod, ensuring compliance with safety standards and reliable integration with your home’s electrical system.

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