proud to be australian, page-23

LouL
Post #: 191571

I wonder if your " functioning brain" can work out for me how many wind turbines we would need to replace our coal fired power stations.

While your at it you might also work out how many hectares of solar panels we would need as well.

Oh, and you might also let us know what we'll use when the sun don't shine and the wind doesn't blow.

In answer to the 1st part someone did the sums and it shows just how hair-brained the ALP proposition is on this

Gleaned from another blog...

How is Julia Gillard going to replace the power station she wants to close?

The chief of Macquarie Generation, Russel Skelton, said in Tuesday?s Australian that it would take 3,500 turbines to replace the generator at Bayswater, NSW.

I had a look at the consequences of replacing Hazelwood, in the Latrobe Valley, with wind power, a measure being contemplated by the Government as part of its direct action plan for CO2 emissions reductions.

The figures are mind boggling. First is the cost of the buyout of Hazelwood. Probably about $3b.

Second is the cost of the replacement turbines. Hazelwood is 1470mw. ( say 1500mw for simple sums ). A standard 3mw turbine costs about $7m. ( windustry.org ) That would be 500 towers for nominal capacity of 1500mw. But, given that the average output of these devices is only 1/4 of the nameplate capacity, (or less ), a total of at least 2000 towers would be needed to replace Hazelwood.

Bayswater is bigger than Hazelwood, so Skelton?s figure for Bayswater is probably right.

And 2000 turbines at $7m each works out to $14b! This is 40 windfarms with 50 turbines each, scattered around Victoria.

Thirdly, since the wind farms will spend half their time supplying less than their average output ( by definition), the system will need open cycle gas turbine backup. And backup for even 1/3 of the windfarms capacity will require at least a 500mw of gas turbine generation. This will cost maybe $1.3b, or more. Origin just built one at Mortlake.

Then comes the cost of the gas supply infrastructure, and connection costs to the electricity grid. In total, close to $2b.

Finally comes the cost of the grid connection for the 40 dispersed windfarms. At least another $1b.

[b]So the final cost to replace Hazelwood with wind and gas is 3+14+ 2+1= $20 billion![/b] This is more than the whole Latrobe Valley generating system is worth! Where on earth is this sort of money going to come from? And what will be the price of power with such a monumental amount of capital to service?

And here?s the kicker. The cost of abatement. Assuming that the 16mtpa of current emissions from Hazelwood are foregone, (and not counting the gas that will be used in the scheme anyway), the cost of abatement is $1,350/tonne! This is all madness.