Continuum Energy has a number of flexible payment options. These include: Fixed Price Plan: you lock in a price that remains the same for the duration of the contract. Index Price Plan: your energy supply costs follow the wholesale market and will fluctuate according to the highs and lows according to the current conditions. Variable Price Plan: your energy rates change monthly according to fluctuations in the wholesale market. Managed Price Plan: you start with an Index Price Plan and have the ability to switch to a Variable Price Plan at any point during your contract.