Of course, that's assuming they're still
there in 2020 . . .
Amid worsening climate change-related problems for small island states, Tuvalu has established a national goal of being powered entirely by renewable energy sources by 2020. Government officials and the donors of Tuvalu's first large-scale solar energy system alike hope the moves help inspire much larger nations later this year in negotiations of a successor to the Kyoto Protocol agreement on climate change.
The solar system installed on the roof of Tuvalu's largest football stadium now supplies 5 percent of the electricity needed by that nation's capital, Funafuti.
In its first 14 months, the operation has reduced Tuvalu's consumption of generator fuel, shipped from New Zealand, by about 17,000 litres and reduced Tuvalu's carbon footprint by about 50 tonnes. In the process, it has also reduced the risk of diesel spills around the archipelago of four low-lying coral islands and five atolls.
Based on the project's success, the country now aims to be powered entirely by renewable energy sources by 2020, a goal requiring an investment estimated at just over $20 million, according to government estimates.
EDIT
http://planetark.org/enviro-news/item/53917