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Who this is for: an owner, asset manager, or board of a New York City building over 25,000 square feet that heats with natural gas, fuel oil, or district steam and is covered by Local Law 97. The decision: whether the building’s 2030 position is a controls problem, a fuel problem, or both, and which decisions have to be made before 2027. Scope: New York City only. The reading of the rule’s tables below is ieComfort’s analysis; the rule does not describe its own effect.
Two numbers change in 2030, and they change in the same direction
Local Law 97 compares a building’s counted emissions with a limit. Both are set by tables in the rule (1 RCNY §103-14), and both tables have a 2024 to 2029 column and a 2030 to 2034 column. The limits fall for every common property type. At the same time, the coefficient that converts a kilowatt-hour of electricity into emissions falls by half, from 0.000288962 to 0.000145 metric tons per kWh, because the grid is expected to be cleaner by then. District steam edges down, from 0.00004493 to 0.0000432 per kBtu. Natural gas and fuel oil do not move: 0.00005311 per kBtu for gas, 0.00007421 for #2 oil, 0.00007529 for #4 oil, in both columns.
Put those together and the arithmetic is one-sided. A building that heats with electricity sees its limit fall and its counted emissions fall with it, because the coefficient does half the work. A building that heats with gas or oil sees its limit fall by half or more while its counted heating emissions stay exactly where they were. The same equipment, the same bills, the same occupancy, and a different answer on January 1, 2030.
A worked illustration
Take a 100,000 square foot office that uses 1,500,000 kWh of electricity and 60,000 therms of gas a year (6,000,000 kBtu). The figures are round numbers chosen to show the mechanism, not a model of any building.
| 2024 to 2029 | 2030 to 2034 | |
|---|---|---|
| Limit (office, 100,000 sf) | 758 t | 269 t |
| Electricity, 1,500,000 kWh | 433 t | 218 t |
| Gas, 6,000,000 kBtu | 319 t | 319 t |
| Counted emissions | 752 t (under the limit) | 536 t (267 t over) |
| Penalty at $268 per ton | none | about $71,600 a year |
Now give the same building electric heat pumps delivering the same heat. If the boilers ran at 80% efficiency, the useful heat was 4,800,000 kBtu; at a seasonal coefficient of performance of 2.5 that is about 563,000 kWh of additional electricity, and the gas line goes to zero.
| 2024 to 2029 | 2030 to 2034 | |
|---|---|---|
| Electricity, 2,063,000 kWh | 596 t (under 758) | 299 t (30 t over 269) |
| Penalty at $268 per ton | none | about $8,000 a year, before any credit |
| Beneficial-electrification credit on the 563,000 kWh | about 732 t if the equipment is installed and operating before January 1, 2027; about 366 t if installed in 2027 to 2029. Either figure more than covers the 30-ton excess, and the credit may be used against penalties through 2036. | |
The point of the exercise is not that every gas-heated office should electrify. It is that the gas-heated version of this building goes from comfortably compliant to $70,000 a year over with nothing changing, and that a decision made in 2028 has already lost half the credit. Efficiency assumptions, property type, and the building’s real metered use change every number in the tables; they do not change the direction.
The levers, in the order they move the number
- The fuel the building heats with. This is the only lever that touches the 319 tons in the example. Any heating or domestic hot water replacement decided before 2030 is a 2030 decision, and the beneficial-electrification credit is worth twice as much for equipment running before January 1, 2027. Air-source unitary and VRF heat pumps qualify when they exceed a coefficient of performance of 1.5 at 5°F under the applicable AHRI standard; equipment not on the list, including ground-source, qualifies above the same threshold.
- How much heat the building needs. Set points, schedules, simultaneous heating and cooling, steam traps, and overrides change metered gas use without a capital project, and the Local Law 87 retro-commissioning cycle already requires those corrections for buildings over 50,000 square feet. A smaller heating load makes the 2030 gap smaller and the heat pump, if one is chosen, smaller too. Controls work comes before capital because it changes the size of the capital decision.
- The property type the report uses. Limits are set by the type reported in Portfolio Manager; a senior-care campus reporting as a hospital overstates its headroom by more than two times. The registered design professional who certifies the report classifies the building. Get this right before modelling anything.
What does not help a gas building much
Renewable energy certificates offset only grid-electricity emissions. The first RECs eligible for Local Law 97 compliance went on sale through NYSERDA in August 2026, with a second sale planned for spring 2027; they do nothing for the gas or oil line, and because the electricity coefficient halves in 2030, each REC offsets half as much from then on. For the gas-heated office above, RECs could at most address the 218 electric tons, leaving the building over its limit on heating alone. The only other offset, through the Affordable Housing Reinvestment Fund, is capped at 10% of the annual limit at $268 per ton.
Waiting for the law to change. Bills to relieve co-ops and condos (Intro 772) and to cap RECs (Int 0159) were pending as of October 27, 2026 and are not reflected here. Enforcement of the first compliance year has begun: 93% of covered properties filed, about 1,400 non-filers were sent notices, and no dollar penalties had been assessed as of the Department of Buildings’ April 2026 report. A 2030 plan built on the expectation of repeal is a plan with no evidence behind it.
What to decide this year
For a gas- or oil-heated building, three questions settle the 2030 position, and all three can be answered from records the building has:
- What are the building’s counted emissions under both columns, with the property type confirmed and the real metered use by fuel? That is the gap.
- How much of the heating load is operational waste that retro-commissioning would remove? That is the part of the gap that costs no capital.
- Is any heating or hot water equipment likely to be replaced before 2030 anyway? If so, the choice of fuel in that replacement, and whether it is running before January 1, 2027, is the largest single decision the building will make under this law.
What an exposure review produces, and what it does not
A Local Law 97 exposure review takes the building’s metered use by fuel, its Portfolio Manager property types and floor areas, and its equipment inventory, and produces the 2024 to 2029 and 2030 to 2034 positions under the rule’s own coefficients, with the beneficial-electrification credit shown at both rates and the operational corrections separated from the capital decisions. It is an engineering estimate, not a filing. The annual Article 320 report must be certified by a registered design professional, and ieComfort does not certify it; where a filing is needed, the review names what the certifying professional will need from the building.
Sources and dates
- NYC Administrative Code Article 320; 1 RCNY §103-14 (limits table at (c); fuel coefficients at (d)(3); penalties at (g) and (j)); NYC DOB Article 320 Information Guide (beneficial electrification credit).
- NYC Department of Buildings and HPD press release, April 22, 2026; NYSERDA Tier 4 REC Voluntary Sales (Summer 2026 pre-sale).
- The worked illustration is ieComfort’s arithmetic from the rule’s coefficients with stated assumptions (80% boiler efficiency, seasonal COP 2.5); it is not a model of any building.
- Parent article: Local Law 97: Fine Today, Headed for 2030.
- Last reviewed October 27, 2026. The credit section changes meaning on January 1, 2027. Pending legislation is not reflected and will not be until enacted.