Here's some simple math from AEA's site:  Projected cost: ~$6 Billion.  Projected energy production: 3 Billion KWHr annually.  50 cents per kwhr. Cost of CEA today: ~ 15 cents.  GVEA: ~20 cents.  Mega Projects NEVER come in less, always more.  $1 Billion in transmission line costs are needed to connect SuHydro to the Railbelt.  Projected, not completed.  Seeing a pattern here?  http://www.susitna-watanahydro.org/