COUPLING_MIN

Minimum marginal level of a coupling group, declared on its reference port (the port with coupling-coefficient 1). Setting it makes the coupling group unit-committed: a per-time-step on/off binary is introduced, and when the group runs its marginal level stays between this minimum and the reference port’s power-capacity (the maximum); when it is off, all ports are exactly 0. Use it to model a minimum load, such as a cogeneration unit that must run at or above a minimum output when on and be fully off otherwise.