Solar investment independent of oil?

Is solar still a good investment

Yesterday, Suntech Power posted a 58 percent rise in quarterly earnings. Like many solar power plays, Suntech has not yet been harmed by the drop in oil prices. This has caused some solar analysts to speculate that solar power has been decoupled from oil. Has solar power finally taken that next step?

Likewise, considering the underinvestment in America's electric grid and power plants that is going to push electricity prices higher over the next few decades, hasn't solar power become a smart move for consumers?