Tinman,

It was stated previously that the smelter would use the equivalent electrical power as compared to powering 300,000 homes.

The math is interesting 

I live in a small house 1500 square feet and pay rates that fluctuate between 8 cents to 18cents a kwh according to my Hydro Bill.

My total cost for hydro last year was $2,100.

I realize smelters...if they make a good deal can pay MUCH lower rates.

Here's an older link that is a couple of years old

https://agmetalminer.com/2015/11/24/power-costs-the-production-primary-aluminum/

Let's assume that Wynne agrees to subsidize the smelter at an ultra low cost of 2.5 cents a kwh

Let's be very conservative and assume that all 300,000 homes are small (1500squ ft) and consume the same power at approx 2.5 cents a kwh.

If I am averaging 10 cents a kwh and paid $2100 for last year ...if I was charged 2.5 cents like a smelter might be...I'd be paying an annual cost of $525.00 for hydro.

If I multiply $525 x 300,000 homes I get   $157,500,000 annually

If going with Natural gas saves an approx 40% as per KWG testing, then the savings annually are 

$63,000,000 per year.

If my math is wrong, or if any portion of this post is not correct, please post a reply.