Alan Olson en NorthWestern details PPL Dam purchase proposal to lawmakers <p>NorthWestern Energy continues to work on plans to purchase 11 hydroelectric dams from PPL Montana.</p><p>The approximately $900 million dollar deal will have to be approved by the state Public Service Commission.</p><p>Capitol Reporter Dan Boyce says&nbsp;NorthWestern updated members of the Montana Legislature on their plans.</p><p></p> Fri, 08 Nov 2013 23:05:21 +0000 Dan Boyce 10866 at