The press release says,
>In chemical looping, the coal isn't burned with fire, but instead chemically combusted in a sealed chamber so that it doesn't pollute the air. A second combustion unit in the lab does the same thing with coal-derived syngas, and both produce 25 thermal kilowatts of energy.
How much coal does it take to produce those 25 kW? You'd think efficiency is what most readers would want to hear about at this point because everything else sounds pretty great.
A page linked [1] from the press release states that
>New technologies that use fossil fuels should not raise the cost of electricity more than 35 percent, while still capturing more than 90 percent of the resulting carbon dioxide.
but it is unclear if this is mostly due to the price of extra coal or the equipment itself.