# Plug-In Energy

> UK plug-in solar kits and battery storage, explained in plain English.

## What we sell

- Plug-in solar-only kits from £599: two 460 W panels (920 W peak) with an 800 W micro-inverter, limited to 800 W AC output under the 2026 Great Britain rules. Typical output about 700 kWh a year (between PVGIS figures of ~650 kWh upright balcony and ~890 kWh tilted, south-facing, Birmingham).
- Fox ESS Mini Qube batteries from £999, with 2.11–10.55 kWh catalogue options.
- MARSTEK VENUS-E 5.12 kWh battery from £1,499.
- Smart-energy-meter and professional-installation options where the selected product and property qualify.

All customer prices are VAT-inclusive. Product availability on the live product page controls whether the customer pays now, reserves with no payment, or cannot order.

## The important solar and battery distinction

1. Compliant plug-in solar has been legal in Great Britain since 27 August 2026 (SI 2026/848, following the government's 24 March 2026 announcement). Follow the kit instructions and notify the Distribution Network Operator free within 28 days, for example via myplugin.solar.
2. A suitable battery can be charged from a wall socket and power suitable appliances from its own output socket today.
3. A battery may be professionally hardwired as a conventional household system where the exact model, property and connection route qualify. Output and backup capability are model-specific.
4. The solar-only rules do not automatically permit self-installed battery discharge into household wiring through a plug.
5. “Future-ready” is not a guarantee of future certification, approval or a software-enabled legal change.

## How battery savings work

A battery can charge during a cheaper tariff window and supply a suitable direct appliance or verified installed load later. Savings depend on tariff spread, battery losses, capacity and the load actually shifted. Calculators are estimates, not guarantees.

Suitable direct-load examples may include a fridge/freezer, router, home-office equipment, aquarium circulation equipment, or heating controls. Check normal running watts and start-up surge. Do not assume a battery can run a complete heat pump.

## Key guides

- [Balcony solar panels UK](https://plugin-energy.co.uk/balcony-solar-panels-uk)
- [800 W balcony solar savings](https://plugin-energy.co.uk/blog/800w-balcony-solar-savings)
- [Plug-in solar panels UK](https://plugin-energy.co.uk/plug-in-solar-panels-uk)
- [Is plug-in solar legal?](https://plugin-energy.co.uk/blog/is-plug-in-solar-legal-uk)
- [How to register a plug-in solar kit (G98)](https://plugin-energy.co.uk/blog/g98-plug-in-solar-notification-uk)
- [Are plug-in batteries legal? What you can use today](https://plugin-energy.co.uk/blog/are-plug-in-batteries-legal-uk)
- [Plug-in home battery UK](https://plugin-energy.co.uk/plug-in-home-battery-uk)
- [Installation options](https://plugin-energy.co.uk/installation): plug in & go, or professionally installed (flat fitting fee, England only, subject to survey)
- [How professional installation works](https://plugin-energy.co.uk/professional-installation)
- [Savings calculator](https://plugin-energy.co.uk/savings-calculator)

## Seller and support

Plug In Battery Ltd (company 17134171), trading as Plug-In Energy, operates the website as sales agent. PowerXpress LTD is the seller, payment recipient, fulfiller and order-support contact for products purchased through the site.