I did test the example I provided, and it worked well, with partial load efficiencies as defined. I verified the partial load operation from the results.
I am not able to reproduce your issue without the model files. Anyway, your specification looks somewhat odd to me, because your minimum stable operation level is 70%. It means that the technology cannot operate below the 70% load (seasonal shut-downs / start-ups of units are of course possible).
I am not able to reproduce your issue without the model files. Anyway, your specification looks somewhat odd to me, because your minimum stable operation level is 70%. It means that the technology cannot operate below the 70% load (seasonal shut-downs / start-ups of units are of course possible).