In the ongoing wake of the Fukushima nuclear meltdown, Japan is doing the right thing.
The Japanese government has announced plans to require all new buildings — commercial and residential — to include solar panels by 2030. The goal is to increase solar capacity in Japan from today's 2600 megawatts to 39,000 megawatts over the next 20 years. That would be enough to provide electricity to about 7 million homes.
Japan's Institute for Sustainable Energy Policies has stated that the goal ought to be 71,000 megawatts of solar capacity by 2020. That would power 12 million homes.
Likewise, in the wake of the BP oil spill, the United States is doing... I have no idea.