Portugal produces 1/3 of its energy from renewable sources. In having to quickly respond to a shortage of oil, coal and gas, Portugal is now an EU leader in the clean tech revolution. In less than three years, Portugal has trebled its hydropower capacity, quadrupled its wind power, and is investing in more photovoltaic plants. What is to be the world’s largest solar photovoltaic farm is taking shape near Moura, generating electricity straight from sunlight . It is expected to supply 45MW of electricity each year, enough to power 30,000 homes.
From the Upcoming ueue, submitted by mrmunchies.
Here are a couple of references to illustrate.
http://www.superflex.net/tools/supergas/technology.shtml
http://www.arti-india.org/content/view/45/52/