You're already on the right tariff. Your house should be too.

Why EV drivers are the perfect fit for home batteries

If you drive an EV, you've already done the hard part. You've switched to a time-of-use tariff, you've got a smart meter, and you understand how cheap overnight electricity works. Most people considering a home battery need to switch tariff first — you don't.

Right now, your EV charges at 9.5p/kWh overnight on Octopus Go. But every light, appliance, and device in your house still runs at 33p+ during the day. That's a 24p/kWh gap you're paying for no reason.

A home battery closes that gap. It charges overnight at the same cheap rate as your EV, then powers your home during the day. Same tariff, same meter, no changes needed.

Can I charge my EV and a battery at the same time?

Yes. Most time-of-use tariffs offer 4-6 hours of cheap overnight rates — more than enough for both. An 11.5kWh home battery takes around 2-3 hours to fully charge, drawing about 3.6kW. A 7kW EV charger runs alongside it comfortably on a standard domestic supply.

You don't need to schedule or stagger anything. Plug in your EV, and the battery handles itself. Both charge overnight, both save you money.

Which EV tariffs work?

Any time-of-use tariff with cheap overnight rates works with a home battery. If you're on one of these, you're already set:

• Octopus Go — 9.5p/kWh overnight (midnight to 5:30am). The most popular EV tariff and our recommended option.
• Intelligent Octopus Go — from 8p/kWh overnight (11:30pm to 5:30am, often extended). Requires a compatible EV or charger. Even cheaper overnight rate means even bigger savings.
• Octopus Flux — variable rates with cheap overnight periods. Works well if you have or plan to add solar.
• Economy 7 — approximately 14p/kWh for 7 overnight hours. Savings are lower than Octopus Go but still substantial.

What about Intelligent Octopus Go specifically?

Intelligent Octopus Go is designed for EV owners and offers some of the cheapest overnight rates available. The tariff often extends cheap-rate periods beyond the standard window to help your EV finish charging. A home battery benefits from these extended periods too — more cheap hours means a fuller battery every morning.

One thing to note: Intelligent Octopus Go requires a compatible EV or smart charger. If you're already on it, you meet the requirements. The home battery doesn't affect your eligibility.

You don't need solar

Many battery companies pitch their products alongside solar panels. If you have solar, a battery absolutely helps you store and use more of your generation. But you don't need it.

As an EV driver, you already have the tariff that makes batteries work. The battery pays for itself through tariff arbitrage alone — charging at 9.5p and displacing 33p+ electricity. Solar is a bonus, not a requirement.

The numbers over time

• Year 1-4: Battery pays for itself through daily savings
• Year 5-10: Pure savings of £900+ per year (battery is warrantied for this period)
• Year 10-15+: Battery continues working beyond warranty. Designed to last 15+ years with minimal degradation.

Over 10 years, that's £5,000+ in savings after the battery has paid for itself. Over 15 years, closer to £10,000.

What Habo Energy includes

Everything you need, nothing you don't:

• 11.5kWh battery — enough to cover a typical household's daytime usage
• Compatible hybrid inverter (solar-ready if you add panels later)
• All cables — DC, AC, and communication
• Mounting brackets and hardware
• MCS certified professional installation, or use your own electrician
• 10-year warranty

Pre-configured for Octopus Go and other time-of-use tariffs. No compatibility research, no hunting for parts, no surprises.

Use the savings calculator to see exactly what you'd save based on your tariff and region.