List of Contributions

Dear Abbas, well, if you are only interested in the first constraint, that looks syntactically correct and - together with c2 - forces the s[k][0] =a[k] as can be seen by comparing the outputs for S for the first period (which is "0"), they are identical for OPL and GAMS: * S variables p/h 0 ...

Hi, I'm not sure if you posted an incomplete OPL model or you are missing (1) the objective function, (2) the bigM constraint that links x_kt and y_kt, and (3) the constraint that bounds sum_(k in K) (e_k * s_kt) <= C compared to the model in the embedded picture. Regarding your question - ...