Participants need to opt in online and reduce their energy usage during this hour.

Octopus Energy told people opting in they would enter a prize draw for a prize of 888,888 Octopoints, worth £1,111.

Via the Octoplus Savings Sessions, Octopus Energy will pay participating customers to use less power during peak times.

The energy provider said they will tell customers about the events with as much notice as possible, ideally the day before, either via an app notification or email for those who don’t use the app.

Customers must opt in each time via their app or dashboard to take part in the session and earn the Octopoints.

In some select sessions, known as “Surprise Sessions”, there is shorter notice, with no notifications.

Sometimes, these events will offer “higher” rewards.

Following each event, Octopus Energy will look at the participants’ smart meter readings to work out how much they saved.

These earnings will then be added to the Octoplus account within a few weeks.

Octopus Energy will also offer prizes in certain Savings Sessions.

Billpayers will need to have a working electric smart meter so the supplier can verify how much energy has been saved.