- Octopus enters the home battery market with two distinct systems: Nook Cube and Nook Colossus
- Renters receive the Nook Cube, a rechargeable battery requiring no installation work
- Homeowners benefit from Nook Colossus, which can be expanded up to a substantial 30 kWh capacity.
Octopus Energy has unveiled a new range of home batteries called Nook, aimed squarely at the home storage market.
Announced at the company’s recent Energy Tech Summit, the line includes two distinct products designed for different types of customers.
One option targets more than 10 million renter and renter households in Britain, while the other is suitable for homeowners looking for a permanently installed system.
Two battery systems designed for different homes
Octopus says the plug-in option for renters, called the Octopus Nook Cube, is a compact 2 kWh battery the size of a shoebox that plugs into any standard wall outlet.
Customers can add additional units via the Octopus app, allowing total storage to scale up to 10.5 kWh over time.
For homeowners, Octopus is launching an engineer-installed wall-mounted system called the Octopus Nook Colossus, available in 5 kWh and 10 kWh configurations.
Larger households can stack additional units to reach a maximum capacity of 30 kWh, positioning it as a real rival to Tesla’s Powerwall line.
Both systems work alongside existing solar panel installations and come with a 12-year warranty as standard.
Unlike many existing systems, the battery connects directly to a standard household outlet without requiring technical installation or real estate modifications.
Octopus plans to start selling its batteries next year in the UK, Germany, France, Italy and Spain.
This timeline means that households hoping for immediate alternatives to Tesla Powerwall products will have to wait until at least 2027.
Savings requests are based on existing smart tariffs
Home batteries store electricity when prices fall before releasing it later when rates become significantly more expensive for consumers.
Octopus says customers can further increase their savings by combining battery systems with its own smart tariffs and electricity plans.
According to the company, these tariffs have already helped customers collectively save almost £1 billion in energy costs.
“Home batteries are a cool technology and one of the smartest ways to reduce energy bills today,” said Greg Jackson, founder and CEO of Octopus Energy Group.
“Offering Octopus batteries to our customers is an important step in our mission to help people access the cheapest energy possible. »
Demand for domestic storage has reportedly accelerated due to instability in the Middle East and increasingly unpredictable energy prices around the world.
Across the UK, Spain and France, Octopus claims to have already installed almost 26,000 solar and battery systems.
The launch makes Octopus the first major UK energy supplier to sell its own range of batteries directly to customers.
It remains unclear whether a late arrival will affect enthusiasm, although rising energy costs may have no shortage of interested buyers.
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