Shell's stated RoI threshold for wind/solar projects is 8-12%, sufficiently low that anything not outright insane can probably pass muster.
The questions on the CC were the usual stuff about capital spending, free cash flow, share buybacks, etc. There was also an unusual amount of CC discussion about Shell’s chemicals division because it had negative earnings during the quarter.
“The efficient-market hypothesis may be
the foremost piece of B.S. ever promulgated
in any area of human knowledge!”