If you operate a commercial building in New York City or Long Island, you already know that energy is one of your largest operating expenses. What you may not fully appreciate is how much of that spend is avoidable — and how directly it ties to your Local Law 97 compliance exposure. Modern building automation systems (BAS) are the most reliable lever for cutting both.
Why NYC and Long Island Energy Costs Are Particularly High
Consolidated Edison's commercial electricity rates consistently rank among the top five most expensive in the country, with blended rates often exceeding $0.18–$0.22/kWh for mid-sized commercial accounts. Demand charges — fees based on your peak 15-minute interval each billing period — can add another 30–40% on top of the consumption charge. If your HVAC system has a single inefficient startup on a hot July afternoon, that spike follows you on the bill for the entire month.
PSEG Long Island's rate structure is similarly aggressive. Nassau and Suffolk County commercial customers face demand charges, fuel adjustment clauses, and distribution charges that make uncontrolled energy use expensive quickly. Many Long Island commercial buildings also have older infrastructure — single-zone rooftop units, pneumatic controls, or oversized boiler plants — that compound the problem.
How a Building Automation System Addresses This
A modern BAS integrates sensors, controllers, and software across every major energy-consuming system in your building. Rather than operating each system in isolation, the BAS coordinates them as a single organism responding to occupancy, weather, utility rates, and equipment status in real time.
HVAC Optimization
HVAC typically accounts for 40–60% of a commercial building's energy use. A BAS controls setpoints, fan speeds, damper positions, and chiller staging dynamically based on actual occupancy and outdoor air conditions. Demand-controlled ventilation (DCV) — using CO₂ sensors to modulate outdoor air intake based on how many people are actually in the space — alone can reduce HVAC energy use by 10–20% in office buildings that are routinely less than fully occupied.
Optimal start/stop algorithms learn how long your building takes to reach comfort conditions on a given day and start equipment only as early as necessary — rather than running at full capacity from 6am when occupancy doesn't begin until 8am. In NYC's climate, where shoulder-season conditions dominate the calendar, this produces meaningful savings year-round.
Lighting Control
Occupancy-based lighting, daylight harvesting using photosensors, and scheduled shutoffs for common areas and perimeter zones consistently reduce lighting energy by 20–40%. In Class A office buildings where tenants occupy 60–70% of the floor at any given time, the savings from occupancy sensors alone justify the investment.
Plug Load Management
Plug loads — computers, monitors, kitchen equipment, AV systems — are the fastest-growing energy category in commercial buildings. A BAS can integrate with smart power strips or building-level scheduling to ensure conference rooms power down after hours and kitchen equipment doesn't run through the weekend.
Demand Peak Shaving
For ConEd and PSEG LI customers subject to demand charges, a BAS can actively shed non-critical loads during anticipated peak windows — pre-cooling the building before a hot afternoon, temporarily raising setpoints by 1–2°F, or cycling non-essential equipment. This directly reduces the peak demand figure that drives demand charges.
Real Efficiency Numbers by System
Based on field performance across commercial buildings in the New York metro area, well-implemented BAS measures typically deliver:
- HVAC scheduling and optimization: 15–25% reduction in HVAC energy use
- Demand-controlled ventilation: 10–20% reduction in HVAC energy use (on top of scheduling)
- Lighting occupancy and daylight controls: 20–40% reduction in lighting energy use
- Demand peak management: 10–20% reduction in monthly demand charges
- Fault detection and early intervention: 5–15% reduction across all systems by catching equipment running inefficiently
Combined, a comprehensive BAS implementation in a building with no existing automation can reduce total energy costs by 20–35%. For a commercial building spending $500,000 annually on energy, that's $100,000–$175,000 per year in avoided cost.
The LL97 Connection
Local Law 97's carbon emissions caps are directly tied to energy consumption. Buildings that exceed their limits pay $268 per metric ton of CO₂e over their cap — and for large commercial buildings consuming substantial amounts of ConEd electricity and natural gas, that exposure can easily run $50,000–$200,000 per year.
Automation-driven efficiency reductions translate directly into lower emissions. A 25% reduction in HVAC energy use in a Midtown office building can be the difference between compliance and a six-figure annual fine. For buildings already close to their emissions cap, a targeted BAS upgrade is often the most cost-effective path to staying on the right side of the law.
Getting a Building Assessment
The right starting point for most buildings is a professional energy and controls assessment that benchmarks current consumption by system, maps existing controls infrastructure, identifies the highest-impact automation opportunities, and models projected savings and payback.
MJI Energy conducts building assessments for commercial properties across New York City and Long Island. Our team includes Niagara-certified engineers with experience across office buildings, healthcare facilities, multifamily properties, and retail. Contact us to schedule an assessment or discuss your building's situation.