Thought I would post this having seen people signing up for tariffs in excess of 35p/kWh already with huge standing charges.Note: this tariff requires you to have a v1 secure of v2 smart meter
Octopus Agile is a tariff that tracks wholesale electricity prices and regularly went close to or below 0p/kWh during lockdown. It is capped at 35p/kWh which at the time was seen as insanely expensive.
Fast forward a bit and most tariffs are at or exceed this price. Hence you may not pay more, and may pay less for electricity used when it is very windy/sunny or outside of peak hours.
This can be especially beneficial if you don't use much electricity as the standing charge is low.
Historical prices can be seen hereagileprices.co.uk
There are no exit charges so you can switch to any other Octopus tariff or another provider if they increase the cap.