Well I guess I know more than him. Maybe you'd better do some...

Well I guess I know more than him. Maybe you'd better do some research yourself and find out how much power is required to produce one tonne of ferro manganese.
Only a fool doesn't do their own research, yes its your money you can do as you please.
Try google.com, I'm sure that anybody can do that.
Even the first result tells you the importance of power costs ie.

"The power consumption is considered to be the most important factor affecting the production cost of ferromanganese alloy. "
https://www.sciencedirect.com/science/article/pii/S1006706X14601035

Here is a little info that anybody can find on google, maybe Peter Strachan is unable to use google.com.
1800KWh to 2500KWh is considerably more than 1.87KWh, I'm sure you would agree. Its possible the bloke has made a typo and meant 1.87MVh, but it again shows his stupidity not checking a report that is published to advise clients.


Low C Fe-Mn contains Mn in the range of 76 % to 92 % and C in the range of 0.5 % to 0.75. The production of low C Fe-Mn is not possible by the decarburization of high C Fe-Mn without extremely high losses of Mn. It must accordingly be made of a silico-thermic reduction process. The process is similar to that used in the silico-thermic production of medium C Fe-Mn. High-purity ores are used and in particular ores containing Fe and P are to be avoided. An artificial Mn ore produced as a high grade ore is particularly suitable because of its low impurity level and because all the Mn is present as MnO. The reduction of the higher oxides of Mn is therefore unnecessary. The typical consumption figures per ton of low C Fe-Mn ferromanganese having composition of Mn – 85 % to 92 %, C – around 0.1 %, and Si around 1 % with a manganese recovery of 75 % are calcined Mn ore – 1250 kg to 1350 kg, Si-Mn (containing 32 % to 33 % Si) – 800 kg to 850 kg, quicklime – 1000 kg to 1100 kg, electrodes – 10 kg to 12 kg and electric power – 1800 kWh to 2500 kWh.
http://ispatguru.com/production-of-ferro-manganese/


Whilst all the GMC cheer leaders are sucked in by inaccurate reports that fact is
"The power consumption is considered to be the most important factor affecting the production cost of ferromanganese alloy. "