How do we represent prosumption profiles over time?

A proposal is that we represent a profile as simply a power level and a timestamp, with the assumption that this power level continues indefinitely or until the next timestamp is encountered.

We need a convention for direction of power flow. Proposal is that +ve is a demand or sink (consumption in traditional terms), -ve is a supply or source (generation).

A second proposal is that we could have an option to specify that a pattern is repeated indefinitely, rather than simply maintaining a particular power, although this compromises some simplicity. A similar effect could be achieved by inputting multiple timestamps projecting to an arbitrary length of time in the future, but this could become onerous in practical use.

The benefits of this type of profile over traditional "use per X timeslot" profiles is that it is agnostic to time resolution and could more easily accommodate different time resolutions in the same usage scenario.