The order will instruct federal buildings there to raise thermostats to 78 degrees and shut off all non-essential lighting during Stage 2 and Stage 3 energy alerts.
The council says all lighting in essential and high use areas, such as those covered by CCTV and in high crime areas, town centres or high speed roads will stay.
Martin Scorsese cites Caravaggio as an essential influence, both because of his lighting and because he painted religious subjects based on people he knew from the streets.