Partially fixed / variable energy unit to create
An energy unit with partially fixed load or production could be handy in many cases.
Two ways to do so can be considered :
- A variable energy unit with fixed pmax and pmin for the relevant time steps (easy way)
- A fixed energy unit where only a portion is fixed. To do so, a work on the imposed vlen of p defined in Quantities and on the opt parameter as a list or dict must be lead (sophisticated way).