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Author Topic: Coal  (Read 127614 times)

rboyd

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Re: Coal
« Reply #650 on: March 13, 2017, 10:11:48 PM »
CCS has a lot of hidden costs:
- The cost of transportation and storage, at least an extra $10 per ton carbon
- The extra mining of coal, as CCS uses more coal to power the required processes, releases methane. On a CO2 equivalent basis this will reduce the amount of net captured CO2 and drive up the per ton cost
- The cost of the extra power if it were sold at retail costs
- Maintenance and wear and tear on big, complex, pieces of equipment

So, probably well north of $100 per ton CO2 equivalent, say $130+. Probably why CCS has completely stalled and seems to have no chance of the grandiose build out assumed in the UN IPCC scenarios. We simply have to cut coal use rapidly (and not replace it with natural gas which is just as bad once you count the fugitive methane emissions).

Of course, this will not happen in the US with a Trump administration. Wasn't happening anywhere near fast enough under an Obama administration, The recent falls in natural gas prices in the US will  simply drive electricity generation from coal to natural gas.

Sigmetnow

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Re: Coal
« Reply #651 on: March 22, 2017, 05:39:18 PM »
Coal in 'freefall' as new power plants dive by two-thirds in 2016
The amount of new coal power being built around the world fell by nearly two-thirds last year, prompting campaigners to claim the polluting fossil fuel was in freefall.

The dramatic decline in new coal-fired units was overwhelmingly due to policy shifts in China and India and subsequent declining investment prospects, according to a report by Greenpeace, the US-based Sierra Club and research network CoalSwarm.

The report said the amount of new capacity starting construction was down 62% in 2016 on the year before, and work was frozen at more than a hundred sites in China and India. In January, China’s energy regulator halted work on a further 100 new coal-fired projects, suggesting the trend was not going away.

Researchers for the groups said a record amount of coal power station capacity was also retired globally last year, mostly in the US and EU, including Scotland closing its last one.

One of the reasons for the fall in new plants was that too much capacity had been built in recent years, particularly in China.
...
In total, 64GW of coal capacity was retired last year, mainly in the US and EU. Despite US President Donald Trump saying on Monday that he is preparing a new executive order to help America’s ailing coal industry, campaigners echoed analysts who have said he is unlikely to be able to significantly stop its decline.

“Markets are demanding clean energy, and no amount of rhetoric from Donald Trump will be able to stop the fall of coal in the US and across the globe,” said Nicole Ghio, senior campaigner at the Sierra Club, a US-based NGO which has managed to force many US coal plants to close over the last decade....
https://www.theguardian.com/environment/2017/mar/22/coal-power-plants-green-energy-china-india
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