Second that article makes it really unclear what is being included in "energy expenditures". In the earlier paragraphs it talks about electricity which makes sense given a.) it's extremely expensive in NY and b.) I'd imagine more heating comes from natural gas as opposed to AC in southern climates which comes from electricity.
It lacks a lot of critical information to measure environmental impact vs. other cities.
Lastly who is being included? Inner city residents only? Or metro area?
Using electricity has an environmental impact. As does burning fossil fuels for heat etc, which is where the BTU numbers show up.
The biggest benefit is land use it’s self has an environmental impact. The ability to leave land for nature requires people not to be living on it. We don’t want wolves and buffalo walking through suburbs. Rabbits etc can’t graze on a paved roads, and drained swamps stop being swamps.
“New York residents were using an average of 572 kWh a month in 2017.” NYC is so efficient that: “New York ranks 50th out of the 51 states and the District of Columbia. The only state with a lower per capita consumption is Rohde Island at 176 million Btu (MMBtu) or 51.6 MWh. The total 2016 U.S. consumption per capita was 301 million Btu (88.2 MWh).”
It’s consistent across different countries, here’s UK’s data: https://www.bbc.com/news/science-environment-49639003