Walterdale suspension bridge and saskatchewan river with skyline in Edmonton Alberta Canada at dusk Anthony Mance/iStock via Getty Images Note: All amounts disclosed are in Canadian Dollars. Stock prices refer to the TSX prices. On our previous article on TransAlta Corporation (TSX:TA:CA), we stuck with the bull case. This was after the stock had continued to disappoint. We were bullish on Alberta Power prices as well the company's best-in-class hedging activities. Specifically, we said, The "over-hedging" ...