To start with,
Unfortunately, solar and wind technologies require huge amounts of land to deliver relatively small amounts of energy, disrupting natural habitats. Even an aging natural gas well producing 60,000 cubic feet per day generates more than 20 times the watts per square meter of a wind turbine.
I found this comparrison odd more than anything. It's comparing different things, other things have to happen to gas to make it into electricity, is this including the land the power plant it on, or the gas pipeline?
Also, new wind farms are using much larger turbines than older projects, a wind farm constructed today could produce 3 or 4 times more 'watts per square meter' than one construted 10 years ago. In the UK they are building over 30 GW of wind capacity offshore, where there is plenty of space, the US has some big coastlines too if it really needs space.
Nor does wind energy substantially reduce CO2 emissions. Since the wind doesn't always blow, utilities must use gas- or coal-fired generators to offset wind's unreliability. The result is minimal -- or no -- carbon dioxide reduction.
Evidence??? Most CCGT's can be tunred on or off in 30 minutes, allowing them to make up for periods when wind turbines are not operating.
Denmark, the poster child for wind energy boosters, more than doubled its production of wind energy between 1999 and 2007. Yet data from Energinet.dk, the operator of Denmark's natural gas and electricity grids, show that carbon dioxide emissions from electricity generation in 2007 were at about the same level as they were back in 1990, before the country began its frenzied construction of turbines.
If you look at the graph in the mentioned report, it clearly shows CO2 emmisions rising after 1990, and then falling from about 1997 to 2000. Page 27 states:
CO2 emissions vary considerably from year to year, depending on electricity trading.
Adjusting for imports and exports resulte in an overall emissions reduction of 23% in the 1990-2007 period. The primary reason is a conversion of Danish electricity and heat generation to less CO2 intensive fuels such as natural gas, coupled with increased use of renewable energy sources.
The article then states:
And through 2017, the Danes foresee no decrease in carbon dioxide emissions from electricity generation.
This is probably because Denmark has no plans to increase its wind generation capacity.