Reply #3: The bad news is there is a lot of industrial CO2 release that is non-energy related.

[Statistical]

If you take a very large view of CO2 emissions it is in 4 groups. From easiest to hardest to mitigate:
1) electricity
2) heating
3) transportation
4) industrial

Electricity is actually the easiest to solve. An ipod plugged into the wall doesn't care what make the energy it uses just that it is there.

Heating is harder to solve due to amount of energy used however geothermal heat pumps can vastly replace most fossil fuel heating (assuming we can solve number 2).

Transportation is even more difficult. Hydrocarbons as insanely useless in terms of energy density. Also some things like commercial aviation will never work with batteries.

Industrial is the hardest to solve and likely will require some form of CCS. Many industrial processes involve CO2 release and lots of CO2 release. Aluminum and steel production as well as refining certain chemicals. Even if there was unlimited free CO2 neutral power that would still be an issue.

Even recycling doesn't completely remove CO2 release. Recycled steel usually needs to have carbon added in the smelting process and that ends up releasing some CO2. So even if CCS is a minor solution it is a necessary component.