No, existing Octopus Energy customers cannot use a referral code to claim a £50 credit on their own account – the Octopus refer-a-friend scheme only rewards new customers and the person who referred them. The good news: as an existing customer you already have your own personal referral link, and you can earn £50 (or £75 for business) every time a friend, family member or colleague switches through it.
This is one of the most common questions about the scheme, and the answer matters for both directions: it tells you what you cannot do on your own account, and what you absolutely can do as a referrer. Last updated: May 2026.
No. The Octopus refer-a-friend scheme is designed to attract new customers. The reward pays out only when a brand-new customer signs up through a valid referral link – so an existing account holder cannot redeem a code against their own supply, even on a different tariff. (If you are not sure how the scheme works, our guide to whether the Octopus referral is legit covers it in full.)
If you are already an Octopus customer, you already have your own unique referral link – usually in the format share.octopus.energy/adjective-noun-number. You can find it in your Octopus online account or the app. Every time someone signs up via your link and completes their switch:
The credit usually arrives within a few weeks of the new customer’s first Direct Debit being taken — we cover the typical timing in our guide to how long the Octopus £50 credit takes.
| Existing customer | New customer | |
|---|---|---|
| Can claim a referral on your own account? | No | Yes — £50 (home) or £75 (business) |
| Can refer others? | Yes, via your unique link | Yes, once your account is live |
| Reward per successful referral | £50 / £75 | £50 / £75 |
| Limit on referrals | None | None (once you are a customer) |
Octopus encourages customers to share their link with friends, family and colleagues – but there are sensible fair-use rules:
Sharing the link on your own website, blog, social profile or directly with people you know is fine and exactly how the scheme is designed to be used.
If you have recently moved to Octopus but did not start your switch through a referral link, you are now an existing customer and unfortunately cannot retro-apply a referral to your own account. The new-customer reward window has closed. However, you immediately become eligible to refer others using your own link – so the cleanest path forward is to start sharing it.
Planning a switch and want to make sure the £50 is captured the first time around? Our step-by-step switching guide walks you through it.
So, can existing Octopus customers use a referral code? Not on your own account – that path is for new customers only. But you do not need to: every existing customer is automatically a referrer with their own link, and there is no cap on how many £50 rewards you can stack up by helping others switch.
No. The Octopus refer-a-friend scheme rewards new customers and the person who referred them, so an existing customer cannot claim a referral against their own supply.
Log in to your Octopus Energy online account or open the app — your unique share.octopus.energy link is shown in the referrals section.
You get £50 of energy credit for every successful home referral, or £75 if your account is a business or charity account. There is no cap on how many people you can refer.
Mostly yes — with friends, family, your own website or social profile. Octopus does not allow spamming the link on third-party review sites like Trustpilot.
No, the referral has to be applied at sign-up. As an existing customer you cannot retro-claim a £50 on your own account, but you can start earning by referring others.
If you found this useful, here are the other guides on this site that people most often read alongside it:
Disclaimer: Octopus Energy Cash is an independent website and is not affiliated with, endorsed by, or operated by Octopus Energy Ltd. ‘Octopus Energy’ is a trademark of its respective owner. Reward amounts and scheme rules are set by Octopus Energy and may change; always check the current terms on the official Octopus Energy website. We explain how we make money on our disclosure page.
