About 5 billion cubic feet of gas entered New York on Monday, enough to run every gas-using home in New York for about four and a half days. Two-thirds of it came across the Pennsylvania line: on Millennium near Binghamton, on Tennessee at the far western corner of the state, and on National Fuel, Eastern Gas and Empire across the Southern Tier. Most of the rest came from New Jersey, on Transco into the city and on Algonquin and Tennessee into Rockland County. Canada sent a trickle through Waddington. More than half of it didn’t stay. About 0.8 Bcf left for Ontario across the Niagara River, 0.8 went to Massachusetts on Tennessee, and about 1.0 went to Connecticut on Algonquin and Iroquois. That’s normal. In 2024, 55% of the gas that entered New York left again, according to EIA. Much of New England’s and Ontario’s gas reaches them through our state. What stayed was split almost evenly. Power plants burned about 1.1 Bcf, and utility customers (homes, businesses and factories) used about 1.1. Monday was mild: Central Park reached 69 degrees, eight above normal, and heating demand was about half the usual for the date. In winter the split changes. In January 2025, homes, businesses and industry used more than three times as much gas as the power plants. The plants made 36% of the electricity New York used on Monday. Their output bottomed out at 4.9 gigawatts overnight and peaked at 7.2 gigawatts in the 7 PM hour, after sunset. Many of those plants don’t appear in the pipeline postings at all. The biggest plants in the city, including Ravenswood, Astoria, Arthur Kill and the Brooklyn Navy Yard, buy their gas through Con Ed and National Grid, so the pipelines record it as deliveries to utilities. City plants that buy from a utility burned about a quarter of New York’s power-plant gas in October 2025. How we count: these numbers come from the daily postings of the eight interstate pipelines, which show scheduled flows, not metered ones. Electricity comes from NYISO’s fuel mix, and the yearly comparisons come from EIA. Tennessee doesn’t post where it crosses from Pennsylvania, so we work that flow out from what it delivers in New York and New England.