Battery storage has become an essential component of modern solar installations. Rather than feeding all your excess energy back to the grid at lower rates, a home battery system stores that power for use when you need it most—particularly during the evening peak demand hours when electricity prices are highest.
But choosing the right battery system isn't straightforward. The market has expanded significantly over the past two years, with several leading manufacturers dominating the UK residential space. Each brings different strengths, reliability profiles, and integration capabilities. In this guide, we'll examine the three systems we recommend and install most frequently: GivEnergy, MyEnergi Libbi, and SolarEdge.
Understanding Battery Capacity
The first decision is capacity. Measured in kilowatt-hours (kWh), this determines how much energy your battery can store. For most UK households, 5-10kWh systems provide the optimal balance between cost and usability.
A 5kWh system suits smaller households (2-3 people) or those with limited roof space. A 10kWh system works well for families of 4-5 who want maximum self-consumption. Systems larger than 10kWh become increasingly expensive relative to the additional benefit—unless you have a high energy demand or drive an electric vehicle and want to charge from stored solar energy.
GivEnergy: Flexibility and Scalability
GivEnergy has become the most popular choice in the UK market, and for good reason. Their systems are modular, meaning you can start with one battery unit (2.6kWh or 5.2kWh) and add more later as your needs change. This flexibility appeals to homeowners who want to expand their energy independence gradually.
The GivEnergy hub is straightforward to use, with a clear app interface that shows real-time generation, consumption, and storage levels. The system works seamlessly with most solar installers' existing setups and integrates well with EV chargers—critical if you're planning to add electric vehicle charging to your carport later.
Capacity options: 2.6kWh, 5.2kWh, 7.8kWh, 10.4kWh, and larger systems up to 20kWh
Price range: £3,000-£8,000 (installed, depending on capacity)
Warranty: 10 years on battery, 10 years on inverter
MyEnergi Libbi: Integration-First Design
MyEnergi takes a different approach, building their entire ecosystem around smart energy management. The Libbi battery is designed to work seamlessly with their Zappi EV charger—a genuine advantage if you're planning a complete home energy overhaul.
If you install a MyEnergi Zappi charger with your solar carport, the system can intelligently prioritise charging your vehicle from solar generation rather than drawing from the grid. During summer, your car essentially charges for free from your carport. The user experience is exceptionally polished, and the technology is genuinely sophisticated.
The trade-off: MyEnergi systems are less modular. You can't start with a smaller unit and expand; you buy the capacity you need upfront. And while their app is excellent, the ecosystem is tighter—integrating third-party components is less seamless than with GivEnergy.
Capacity options: 4.8kWh, 9.6kWh, 14.4kWh
Price range: £3,500-£9,000 (installed)
Warranty: 10 years on battery, 10 years on inverter
SolarEdge: Premium Integration
SolarEdge is the premium option, and their battery systems reflect that position. If your solar installation uses SolarEdge inverters and optimisers, adding their battery is the natural choice—the integration is flawless, and monitoring is unified across your entire system.
SolarEdge batteries excel at maximising efficiency. Because they can control panel-level optimisation, they squeeze more value from your solar generation in real-world conditions (partial shading, dust, temperature variations). For installations on complex roof layouts or where you've had integration challenges, SolarEdge often makes financial sense despite the higher upfront cost.
Capacity options: 5kWh, 10kWh, 15kWh
Price range: £4,500-£11,000 (installed)
Warranty: 10 years on battery, 12 years on inverter
Battery Storage and Solar Carports
When you're integrating battery storage with a solar carport system, the calculation changes. A carport typically generates 4-8kWp, producing significant excess energy during the day. That energy is particularly valuable at the point of use—powering your home immediately, or storing it to use when you need it.
We typically recommend pairing a carport with an 8-10kWh battery system. This captures most of the daily generation during summer (when your carport is producing peak output) and allows you to use that energy in the evening and morning.
For carport installations with EV charging, the strategy shifts. A larger battery (10-13.5kWh) paired with smart charging means you can optimise charging windows to use stored solar energy rather than expensive grid electricity. This is where MyEnergi's Zappi integration genuinely shines—the system automatically shifts charging to periods when solar generation is high.
Comparing the Systems: A Practical Breakdown
| System | Best For | Key Strength | Typical Cost |
|---|---|---|---|
| GivEnergy | Flexible approach, future expansion | Modular, scalable capacity | £3-8k installed |
| MyEnergi Libbi | EV charging integration, smart management | Zappi synergy, energy optimisation | £3.5-9k installed |
| SolarEdge | Premium efficiency, complex roofs | Panel-level optimisation, unified monitoring | £4.5-11k installed |
Making Your Decision
Start by honestly assessing your priorities. Are you planning EV charging? Then MyEnergi warrants serious consideration. Do you want the option to expand gradually? GivEnergy is the answer. Is your solar installation already using SolarEdge components? That integration path is worth the premium.
Your household size and consumption patterns matter too. Analyse your energy bills—do you have significant evening peak demand? That justifies a larger battery. Do you generate more than you use most days? Even a modest 5kWh system will help.
Finally, consider your installer's expertise. We've installed all three systems extensively. Each manufacturer provides excellent support, but your installer's familiarity and local service network matters long-term. We manage all aspects of the installation, configuration, and commissioning—removing the technical burden from you entirely.
The Path Forward
Battery storage isn't an optional addition to modern renewable energy systems—it's the difference between a good solar installation and a genuinely excellent one. The right battery system turns your solar carport or pergola into a complete home energy solution that works across the entire year, maximising your self-consumption and energy independence.
We're qualified installers for all three systems mentioned. During your consultation, we'll assess your specific circumstances, model your likely generation and consumption patterns, and recommend the system that makes genuine financial and practical sense for your situation. There's no one-size-fits-all answer, but there is a perfect fit for your home.