Gas vs Electric Buildings Under Local Law 97 – Who Pays More?
New York City’s Local Law 97 (LL97) is changing how buildings operate, spend, and plan for the future. For building owners, one big question keeps coming up: Do gas-powered buildings pay more than electric ones under Local Law 97?
The short answer is yes—most of the time. But the real answer depends on how your building uses energy, how efficient your systems are, and how prepared you are for compliance.
In this guide, we’ll break down the cost differences, explain why gas buildings are often at a disadvantage, and show what building owners can do to reduce penalties and operating costs.
Understanding Local Law 97 in Simple Terms
Local Law 97 is part of New York City’s Climate Mobilization Act. Its goal is clear: reduce greenhouse gas emissions from large buildings.
Buildings over 25,000 square feet must meet strict carbon emission limits starting in 2024. These limits get tighter in 2030 and beyond.
If a building exceeds its emission cap, it faces financial penalties of $268 per metric ton of CO₂ over the limit.
That means your energy source—gas or electricity—directly affects how much you pay.
Why Energy Source Matters Under LL97
Not all energy is treated equally under Local Law 97. Each fuel type has a carbon intensity factor, which determines how much emissions are attributed to its use.
Here’s the key difference:
- Natural gas produces direct on-site emissions
- Electricity produces indirect emissions, which are calculated differently
Because of this, gas-powered systems often result in higher reported emissions compared to electric systems.
Gas Buildings: Higher Emissions, Higher Risk
Buildings that rely on natural gas for heating, hot water, or cooking are at a clear disadvantage under LL97.
Why Gas Buildings Pay More
- Direct Carbon Emissions
Gas combustion releases carbon dioxide directly inside the building’s energy profile. This makes emissions harder to offset. - Stricter Compliance Pressure
Gas-heavy buildings are more likely to exceed emission limits, especially after 2030 when caps become stricter. - Limited Efficiency Gains
Even with upgrades, gas systems have a ceiling on how efficient they can become compared to electric alternatives. - Penalty Exposure
If no major upgrades are made, gas buildings can face significant recurring fines every year.
Real-World Example
A typical NYC multifamily building using gas boilers may exceed its emission cap by a wide margin. Without retrofits, this could result in tens of thousands of dollars in annual penalties.
Electric Buildings: Lower Emissions, Better Position
Electric buildings are generally in a stronger position under Local Law 97.
Why Electric Buildings Pay Less
- Cleaner Energy Mix
NYC’s electric grid is gradually shifting toward renewable energy. This reduces the carbon intensity of electricity over time. - No On-Site Combustion
Electric systems don’t burn fuel on-site, which lowers direct emissions. - Future-Proof Strategy
Electrification aligns with long-term climate goals, making compliance easier in future phases of LL97. - Incentives and Rebates
Building owners switching to electric systems may qualify for financial incentives and tax benefits.
Also Read: Chiller Plant Optimization for Large NYC Buildings
The Cost Comparison: Gas vs Electric
Let’s look at how costs stack up.
Upfront Costs
- Gas systems: Lower initial installation cost
- Electric systems: Higher upfront investment, especially for retrofits
Operating Costs
- Gas: Traditionally cheaper, but prices are volatile
- Electric: More stable, especially with energy-efficient systems
Compliance Costs
- Gas: Higher risk of penalties under LL97
- Electric: Lower emissions mean fewer or no penalties
Long-Term Financial Impact
When you factor in penalties, maintenance, and future upgrades, electric buildings often come out ahead financially.
Key Factors That Influence Costs
Not all buildings are the same. Several factors determine whether a gas or electric building pays more under LL97.
1. Building Type
- Residential vs commercial buildings have different emission limits
- Usage patterns impact energy consumption
2. System Efficiency
- Older gas boilers are less efficient
- Modern electric heat pumps can significantly reduce energy use
3. Energy Usage Behavior
- Tenant behavior affects overall energy consumption
- Smart energy management systems can help reduce waste
4. Retrofit Readiness
- Buildings already upgraded with efficient systems are better positioned
- Delayed action increases future costs
Electrification: The Growing Trend
Electrification is becoming the preferred strategy for LL97 compliance.
What Electrification Means
It involves replacing gas-based systems with electric alternatives such as:
- Heat pumps for heating and cooling
- Electric water heaters
- Induction cooking systems
Benefits of Electrification
- Lower carbon emissions
- Reduced risk of penalties
- Improved indoor air quality
- Alignment with NYC climate policies
However, electrification requires careful planning. Not all buildings can switch overnight.
Challenges Building Owners Should Expect
While electric buildings have advantages, transitioning from gas is not always easy.
1. High Initial Investment
Upgrading systems can be expensive, especially for older buildings.
2. Infrastructure Limitations
Some buildings may need electrical upgrades to handle increased load.
3. Planning and Permits
Retrofits require design, approvals, and coordination, which takes time.
4. Tenant Disruption
Construction work may temporarily affect occupants.
Despite these challenges, delaying action often leads to higher long-term costs.
How to Reduce Costs Under Local Law 97
Whether your building uses gas or electricity, there are ways to stay compliant and reduce expenses.
1. Conduct an Energy Audit
An energy audit helps identify inefficiencies and opportunities for improvement.
2. Upgrade to High-Efficiency Systems
- Replace old boilers
- Install energy-efficient HVAC systems
- Use smart controls
3. Consider Partial Electrification
You don’t have to switch everything at once. Start with:
- Domestic hot water systems
- Cooling systems
4. Improve Building Envelope
- Better insulation
- High-performance windows
- Air sealing
These upgrades reduce overall energy demand.
5. Use Renewable Energy
Solar panels and clean energy credits can offset emissions.
What Happens If You Do Nothing?
Ignoring Local Law 97 is not an option.
If your building exceeds emission limits:
- You will face annual penalties
- Costs will increase as limits tighten in 2030
- Property value may decrease
- Compliance pressure will grow
In many cases, doing nothing becomes more expensive than upgrading.
The Big Takeaway: Who Pays More?
So, who pays more under Local Law 97—gas or electric buildings?
Gas buildings typically pay more, especially in the long run.
They face:
- Higher emissions
- Greater penalty risk
- More expensive compliance upgrades
Electric buildings, on the other hand, are better aligned with NYC’s climate goals and often benefit from lower compliance costs.
Final Thoughts for Building Owners
Local Law 97 is not just a regulation—it’s a shift in how buildings operate in New York City.
If your building relies heavily on gas, now is the time to plan. Waiting will only increase costs and risks.
The smartest approach is to:
- Understand your building’s emissions
- Explore electrification options
- Invest in energy efficiency upgrades
- Work with compliance experts
By taking action early, you can reduce costs, avoid penalties, and position your building for long-term success.
