Friday, February 3, 2012

Green Power - Oops

Powerline gives us a look at the effectiveness of renewable energy such as wind and solar.
Slowly, information is leaking from nations that have spent heavily on wind and solar, such as Germany. This information should give pause to those touting solar and wind, including politicians. England is pulling back from wind, Germany has announced drastic cut-backs on its subsidies to solar, and Spain has announced the elimination of subsidies for renewable power. These actions are not the result of success. The erratic nature of these sources is well established. Further, electricity is rather unique among energy types – it cannot be stored on an affordable, commercial scale.

The leaders of countries that have spent heavily on solar and wind assumed that the erratic nature of these sources, and that the lack of storage, can be compensated by installing the facilities over a broad geographical area. They were wrong. A winter high pressure system can cover a broad area of Europe, rendering wind turbines useless when solar panels can generate little electricity, and none at night. Reports are indicating that at least 80% conventional back-up is needed.

A further complication is that fast back-up from conventional sources, such as coal or natural gas, is very demanding on the equipment, inefficient, and polluting – the pollution control devices do not work properly when heat output varies. According to reports, no coal plants have been de-commissioned in northern Europe rendering the claim of lower carbon dioxide emissions questionable.
So, subsidies are being discontinued and no coal units have been taken off line.

2 comments:

Old NFO said...

Interesting that it's getting almost NO coverage here... but then again... :-)

Brigid said...

Wasn't it in Ireland or the UK somewhere last year during the big cold snap that it took more money and energy to run the "green" sources of power than anything else?