ISS power requirements: would this be feasible?

[vt_hokie]

Given the desire to minimize the number of remaining space shuttle flights, might it be possible to only add one additional set of solar arrays, instead of the three additional sets that are currently planned? I don't know if that would be sufficient for Node 2, the Columbus module, and the two Japanese lab modules. But given that there will likely not be a Node 3 or U.S. habitation module, the power requirements are likely less than originally envisioned. <br /><br />What I'm suggesting is basically getting to this (without the third set of folded arrays above):<br /><br />http://spaceflight.nasa.gov/station/assembly/flights/images/L024_13a.jpg<br /><br />instead of this:<br /><br />http://spaceflight.nasa.gov/station/assembly/flights/images/L026_15anew.jpg<br /><br />prior to adding Node 2 and the European and Japanese lab modules.