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Comment: Re:What about... (Score 1) 607

by compro01 (#48140753) Attached to: Wind Power Is Cheaper Than Coal, Leaked Report Shows

I don't think they're expecting to even break even off this particular unit.

It's basically a full scale prototype for the capture tech to see if the tech actually works at a reasonable operating cost. If it does, they'll roll it out to the other coal plants, at lower cost now that they know what they're doing with it.

If it doesn't pan out, they're going to have to find something else to provide power, as the coal plants will have to be shut down when they hit the 50 year mark, as there's no way for them to fit under the CO2 emissions regulations* without the capture tech. And that 50 year mark isn't all that far away.

In the latter case, unit 4 at Boundary Dam will shut down in 2020, followed by unit 5 in 2023, unit 6 in 2028, then Poplar River's units in 2031 and 2033. That's nearly 1/3rd of their generation capacity and most of their base load.

*Existing power plants are grandfathered in. The CO2 regs don't apply to them until 50 years after their commissioning date.

Comment: Re:What about... (Score 1) 607

by compro01 (#48136609) Attached to: Wind Power Is Cheaper Than Coal, Leaked Report Shows

It mentions that there is a plant under construction in Kemper County, Mississippi, that should capture more than half of its CO2 emissions and redirect them to an oil field.

One of the units at Saskpower's Boundary Dam plant up here just finished being converted to carbon capture and is operating now. It supposedly captures 90% of CO2 emissions.

Comment: Re:Conservatives crying "no fair"? (Score 1) 283

Not necessarily. It depends on which part of the 5-way alliance that forms current American conservatism we're talking about.

You've got the business conservatives who seek low taxes and low regulation, the foreign policy hawks who seek a strong defense budget, the social conservatives who fear moral anarchy, the racists and nativists worried about immigration and affirmative action, and the elderly retirees who rely on Social Security and Medicare.

Comment: Re:OK (Score 1) 268

by compro01 (#47991023) Attached to: IBM Solar Concentrator Can Produce12kW/day, Clean Water, and AC

They are doing some funny math to claim 80% efficiency, as that is almost double the current best efficiency achieved in a lab: https://en.wikipedia.org/wiki/...

And I'm pretty sure 80% efficiency is above the theoretical maximum too . . . .

Nothing funny about it. This thing is combined heat and power system. You get electricity directly from the cells, and in keeping the cells cool, you get hot water suitable for running an absorption chiller and desalinating.

Comment: Re: Not just Reno (Score 1) 444

by compro01 (#47900385) Attached to: If Tesla Can Run Its Gigafactory On 100% Renewables, Why Can't Others?

its just a simple idea I have always considered; loading electrical energy into physical potential energy by way of working against gravity. Maybe, instead, just run a big heavy chunk of metal up a notched pole? Then release it to spin a worm gear, to a large cog, then big generator as it slowly drops?

You'd still have the exact same issue with the amount of mass and/or height needed. Mass x height x 9.8m/s^2. For a kilowatt-hour of storage, mass x height needs to equal about 600,000. Gravity-based energy storage simply requires a lot of both for any worthwhile amount of energy.

Comment: Re:Credit System (Score 2) 444

by compro01 (#47887881) Attached to: If Tesla Can Run Its Gigafactory On 100% Renewables, Why Can't Others?

Banks of batteries are expensive and take up a lot of space. You'd need to provide several megawatts for several hours. That would require hundreds of 85kWh car battery packs.

And they'll be producing several hundred thousand such packs annually once the factory is operational.

Also, it's going to be a 10 million square-foot facility, with a few hundred more empty acres around it. I don't think they'll be pressed for space.

What the scientists have in their briefcases is terrifying. -- Nikita Khruschev

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