The clean-energy utility has surpassed ExxonMobil in market capitalisaion—and shows no signs of slowingTO MANY INVESTORS, backing an American oil company looks only slightly shrewder than stuffing cash in a blender. Facing covid-19 and old concerns over low returns, the industry is scrambling to boost efficiency. On October 19th ConocoPhillips said it would pay $9.7bn…
