- Octopus enters the home battery market with two distinct systems — Nook Cube and Nook Colossus
- Renters receive the Nook Cube, a plug-in battery requiring no installation work
- Homeowners get Nook Colossus, which can be expanded to a substantial 30kWh capacity
Octopus Energy has unveiled a new home battery range called Nook, aiming squarely at the household storage market.
Announced at the company’s recent Energy Tech Summit, the range includes two distinct products built for different types of customers.
One option targets the more than 10 million renting households and tenants in Britain, while the other suits homeowners seeking a permanently installed system.
Two battery systems built for different households
Octopus says the plug-in option for renters, called Octopus Nook Cube, is a compact, shoebox-sized 2kWh battery that connects to any standard wall socket.
Customers can add extra units through the Octopus app, allowing total storage to scale up to 10.5kWh over time.
For homeowners, Octopus is launching a wall-mounted, engineer-installed system called Octopus Nook Colossus, available in 5kWh and 10kWh configurations.
Larger households can stack additional units to reach a maximum capacity of 30kWh, positioning it as a genuine rival to Tesla’s Powerwall lineup.
Both systems work alongside existing solar panel installations and carry a 12-year warranty as standard.
Unlike many existing systems, the battery connects directly to a standard household socket without requiring an engineer installation or property modifications.
Octopus plans to begin sales of the batteries next year across the UK, Germany, France, Italy, and Spain.
That timeline means households hoping for immediate alternatives to Tesla Powerwall…
