You missed the point AND made a serious error. First off, you assumed the land use area is for current wind production when I CLEARLY stated that in order to meet growing yearly demand we would have to build 350,000 2MW turbines per year. The land use figures isn't for current wind power generation, it's an extrapolation based on ever increasing demand. IN other words, if we were to meet the increasing demand by utilizing wind power only, it would require land space equivalent to the British Isles every year. The serious error you made was thinking about coastal areas. Which is great but there's a problem. If you don't live near those coastal areas, wind power is pointless to the point of almost being useless. I'll explain when I address your solar power point. Furthermore, we're pretty much approaching the limit of wind power technology. The tech isn't the issue, the issue is trying to draw energy from a slow moving fluid that is constantly changing speed. And one more point on land use. The Bruce Nuclear plant until recently was the largest capacity NPP in the world (It's still #2 though). Bruce stands on about 2 square km of land. Ontario's wind capacity is about half that of Bruce but takes up ten times the land space.I think that you may be just making up "facts," and ignoring others that get in the way of your position. Let's take the area of the world needed to supply wind energy. "At a density of, very roughly, 50 acres per megawatt, typical for wind farms, that many turbines would require a land area greater than the British Isles, including Ireland. Every year. If we kept this up for 50 years, we would have covered every square mile of a land area the size of Russia with wind farms." In actual fact if wind turbines were used exclusively for energy they would require an area of the world equal to about half of Alaska. Given the fact that wind turbines can be placed almost anywhere, even offshore, there is more than enough room for them. And then there is the fact that is the last 30 years wind turbines have increased in efficiency to the point where they currently produce 15 times the energy of a wind turbine in 1980. I don't expect technological improvements in wind and solar to slow down.
Mmmmm Not really. Ever heard of Ohm's Law or Inverse Square Law? When it comes to BASE-LOAD generation, for every 100 miles electricity travels there is a 2% transmission loss. That doesn't include losses when the lines switch from transmission to distribution. Since wind and solar do not provide the kind of base-load generation that traditional power supplies do, the losses are more noticeable. The other issue is that while in theory there are places that could power the entire world via solar power, from a practical standpoint, it's not only impossible but extremely dangerous. North America is divided into 16 separate power grids. This is done for two reasons. 1)To reduce transmission loss by not having to transmit power thousands of miles. And even more importantly 2) Security. If one grid goes down, the entire continent isn't blacked out.The same is true for solar energy. An area the size of Spain could supply enough solar power for the entire world. However, we don't have to cover Spain or any other nation with solar panels considering the fact that so many areas of the world are desert. The Sahara alone could supply the world with electricity many times over.
It will. Don't confuse capacity for output. There's a world of difference.Currently, as you point out, wind and solar cannot match conventional sources of energy in total output, but do not expect it to stay that way.
And how much of it was actually wind and solar? And guess what? Even with that 8% increase wind and solar STILL account for less than 1% of the global energy needs.In 2015 green energy grew by 8% worldwide.
So basically after 30 years a whopping 12%, give or take, of the global power supply will come from so-called "green energy". Wowee. I wonder how much arable farmland we'll have to give up for this 12% total.Continued growth at that rate would see its use double and then quadruple and then double again in less than 30 years. But that would be ignoring nations like India and China where green energy production is proceeding much more quickly.
India Launches Massive Push for Clean Power, Lighting, and Cars
India Launches Massive Push for Clean Power, Lighting, and Cars
Go to China. At least 20% of their farmland has been made toxic by mining and refining elements for batteries. Better yet, go to Inner Mongolia where you can enjoy a nice toxic and radioactive nightmare as they mine and refine rare earth elements for batteries for the so-called "green energy" industry.And then there is your comment on resource use for green energy which conveniently ignores the environmental damage created by the to production of coal and oil. If there is a dirtier industry than either of these two I don't know of it.
As for "my comment", you missed the point. Calling wind and solar "green tech" is a lie, pure and simple. I never suggested that coal and gas aren't dirty industries either. I just find it amusing that so-called "green energy" relies so heavily on coal and gas for its existence.
Think about it for a moment. Your green energy dream can't exist with heavy dependence on coal, oil and gas.
If that still doesn't convince you, here's a good read from the IEEE (Institute of Electrical and Electronic Engineers) which has more updated figures on fossil fuel usage for wind power. My figures were assuming 2MW towers but now we're into the 5MW towers apparently, so these are more relevant figures.
To Get Wind Power You Need Oil - IEEE Spectrum