The article makes it sound like the SF decided to set a goal of &quot;100 percent renewable energy by 2020&quot; without a clue of how to achieve that goal - but gee does it sound nice. Realizing that the city is not going to be able to fund such an endeavor, they mandate the cost of deploying solar panels be passed on to new development, completely disregarding the practicality of solar panels on city buildings. Forget spending the money on better insulation, windows, living roofs, wind power, heat pumps, grey water reclamation, etc. or just making more badly-needed housing - the city needs solar because the word gives people tingles and they have this arbitrary goal-without-a-plan.