In September Orion calculates its peak charges to a retailer, based on their customers’ usage over a number of peak periods from 1 May to 31 August, and applies this charge over 12 months from 1 May (backdated).
Flick passes through this charge for Stardard Users, as a daily fixed charge over the year, and a peak charge that is charged as a per kWh rate in winter: from 7am to 10am and 5pm to 7pm on weekdays from 1 May to 31 August. If you're a Low User only a per kWh charge will apply.
We do this to better reflect the actual cost of network charges over the winter period.
You can read more about it here.