Ann: First Two Smeltering Furnaces Shipped to Kupang, page-45

Those 50 year old furnaces haven't even arrived yet and you think GMC will be in production by the end of 2018?
You'd have to be joking, do you know how long it takes to set up a Mn alloy smelting operation? Mid 2019 or possibly later before the project is producing consistently. Maybe look at the run up time of OMH to get brand new furnaces up and running, this will give you an indication of the expected time frame. Its already 4 years since OM Sarawak started up and its only now that production is in full swing.
OM Sarawak lost money for the first 3 years, don't kid yourself that GMC will suddenly be making money.
That is why GMC elected to have such small power requirements in the initial stages.

On 7 May 2018 GMC stated "GMC has signed a five-year agreement with national power provider PT PLN (Persero) Wilayah NTT (“PT PLN”) for the supply of 20 MVA power to the Kupang Smelting Hub Facility Site. Both parties have agreed on the minimum hours of electricity usage per month based on a minimum payment of 40 hours per month (first 2 years); and a minimim of 200 hours per month (remaining 3 years). PT Gulf has also agreed not to build its own power generator, so long as PT PLN can provide the amount of electricity power required by PT Gulf."

Yes, it says minimum of 40 hrs per month, but its most likely the expected scenario.