as you can see on the left panel theres a vast difference the life cycle emissions. granted though this doesn't address the scope 2 emissions (emissions created via all non-production aspects of the whole operation of the business) separately and even scope 2 includes acquisition of raw materials through the life cycle, not simply the construction of the power plant.
but anyway, you can see there 70% of 40g Co2 is not greatly different to <1% of 1,000g.
