If you write the required resources as absolute numbers, of course it looks like a huge investment. If it was rephrased as percentages of global production over

If you write the required resources as absolute numbers, of course it looks like a huge investment. If it was rephrased as percentages of global production over 15 years, the numbers look much more manageable. 2% of global steel production 1% of global coal production 0.3% of global oil production