Note-taking practice

Despite production cuts, crude-oil prices, which exceeded $115 a barrel for much of June 2022, languished below $80 a year later.

A barrel of oil may be a barrel of oil whether it is pumped at midday or midnight, but a megawatt hour (mwh) of electricity is worth a great deal less when you are sleeping than during the middle of the day or, indeed, during moments when everyone decides to boil the kettle.…