There were a number of restrictions, intended to protect existing water-powered installations.
Moscow's Circle of Light Festival is a breeding ground for innovative light art, spawing the likes of LED-encrusted water jetpacks and firefly-powered installations.
The solar-powered installation Falling prices and government enthusiasm have led to an increasing number of solar-power projects in the USA; one gigawatt of power will have been generated by solar power this year alone, enough for 200,000 homes.
Here, a flexibility premium that includes solid fuel-powered biomass installations might have been appropriate in order to encourage the relevant changes in feed-in behaviour and make flexibilisation investments worthwhile [55].
The first U.S. city to establish green building standards, in August 2008, San Francisco is also home to the Sunset Reservoir Solar Project, the largest solar-powered municipal installation in California, scheduled for completion in December.
Max Siedentopf has set up a solar-powered sound installation there called "Toto Forever" that plays "Africa" over and over and over again, 24/7, until the end of time.
Street art comes alive and goes mobile in a new, tricycle-powered interactive installation called the Suaveciclo by São Paolo-based duo VJ Suave.
In 2007 and 2008 the performance of a solar powered absorption cooling installation was analyzed.
Gas pipes that can supply gas to furnaces can be used to supply energy for all gas-powered appliances, thus installation is easy.
Then, just shy of an hour and a half into the piece which features helium-powered zeppelins, wildly gyrating light installations, and a vast, ingeniously employed scrim the sheep materialized, drumming hoofs first.
