Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Renewable energy in Norway:

This text has been unreferenced on Wikipedia for a very long time. If you can't find a source, be bold and remove it!

This text is part of the article's lead section, so referencing it may be optional. Please see WP:CITELEAD for more information.

"

Norway is a heavy producer of renewable energy because of hydropower. Around 88% of electricity production in Norway is from 1971 hydropower plants with a combined production capacity of over 40 GW (87 TWh reservoir capacity, storing water from summer to winter). Normal annual hydropower energy production is around 157 TWh.[1][2] (Up from 135.3 TWh in 2007).[3] There is also a large potential in wind power, offshore wind power[4] and wave power, as well as production of bio-energy from wood.[5] Norway has limited resources in solar energy, but is one of the world's largest producers of solar grade silicon and silicon solar cells.[citation needed]