Sources

The savings study

The 63%, 35% and 27% figures come from the DesignLights Consortium and NEEA, Energy Savings from Networked Lighting Control (NLC) Systems with and without LLLC (2020), 194 buildings. 63% is the average for the 98 with a sensor and controls in every fixture (luminaire-level lighting control); 35% for the 96 that control fixtures in groups; 49% across all of them. High-end trim contributed 27% on average.

Savings are measured against the same fixtures without controls, so they come on top of LED, and they vary widely by site: the middle half of buildings saved 35% to 69%. The DLC's 2025 memo on the study keeps the same averages.

Case studies

Savings are estimated from each project's design at $0.25 per kWh. CO₂ uses the EPA's eGRID factor for New York City; the gasoline and tree-seedling equivalents use the EPA's Greenhouse Gas Equivalencies Calculator.

Incentives map and state pages

The incentives map marks the states where at least one utility runs a program that pays for networked lighting controls, as of October 2026. Each state page rests on the program documents below, checked on the date shown.

• New York, checked October 21, 2026: New York PSC, Order on Non-LMI Energy Efficiency and Building Electrification (May 15, 2025); Con Edison, Small Business & Nonprofit Neighborhood Program and its 2026 factsheet; PSEG Long Island, business rebates; NYSERDA, FlexTech.
• Connecticut, checked October 21, 2026: Energize Connecticut, Energy Opportunities; Energize Connecticut, Express Service lighting rebates; Energize Connecticut, Energy Conscious Blueprint (new construction).
• Massachusetts, checked October 21, 2026: Mass Save, 2026 Existing Buildings C&I Lighting Controls Incentive Application (January 2026): $70 a fixture, line 163A; Mass Save, Lighting & Controls.
• New Jersey, checked October 21, 2026: New Jersey BPU, Order on Program Year 7 (July 15, 2026); JCP&L, C&I Prescriptive Incentive Guide (October 2026); New Jersey Clean Energy Program, New Construction Program.
• Rhode Island, checked October 21, 2026: Rhode Island Energy, 2026 Retrofit Program, Lighting Systems & Sensors Application; Rhode Island Energy, Retrofit Programs; Rhode Island Energy, New Construction and Major Renovations.

Energy codes by state

As listed on the incentives map.

• California's energy code (2025 Title 24) calls for demand-responsive lighting controls in buildings with 4,000 W or more of general lighting.
• New York's 2025 energy code requires lighting that dims on a utility demand-response signal in most new buildings with 10,000+ sq ft of office, school, retail or storage space.
• Washington's energy code (2021 WSEC) calls for networked or luminaire-level controls in open offices over 5,000 sq ft.
• Connecticut is on the 2021 IECC energy code. Its shutoff, daylight-dimming and garage rules are most practical to meet with a controller on every fixture.
• Delaware adopted the 2024 IECC in April 2026. Its garage, daylight and dimming rules are most practical to meet with a controller on every fixture.
• Illinois is on the 2024 IECC, and so is Chicago's own code from December 1, 2026. Its garage, daylight and dimming rules are most practical to meet with a controller on every fixture.
• Maine is on the 2021 IECC energy code. Its shutoff, daylight-dimming and garage rules are most practical to meet with a controller on every fixture.
• Maryland is on the 2021 IECC, with Montgomery County on ASHRAE 90.1-2022 and Howard County on the 2024 IECC. Its garage and daylight rules are most practical to meet with a controller on every fixture.
• Massachusetts is on the 2021 IECC with state amendments. Its shutoff, daylight-dimming and garage rules are most practical to meet with a controller on every fixture.
• Michigan is on the 2021 IECC, with ASHRAE 90.1-2019 as the other path. Its shutoff, daylight-dimming and garage rules are most practical to meet with a controller on every fixture.
• Minnesota is on the ASHRAE 90.1-2019 energy code. Its garage, daylight and dimming rules are most practical to meet with a controller on every fixture.
• Montana is on the 2024 IECC energy code with state amendments. Its garage, daylight and dimming rules are most practical to meet with a controller on every fixture.
• Nevada is on the 2024 IECC energy code. Its garage, daylight and dimming rules are most practical to meet with a controller on every fixture.
• New Jersey is on the ASHRAE 90.1-2022 energy code. Its garage, daylight and dimming rules are most practical to meet with a controller on every fixture.
• New Mexico is on the 2021 IECC energy code. Its shutoff, daylight-dimming and garage rules are most practical to meet with a controller on every fixture.
• Oregon is on the ASHRAE 90.1-2022 energy code. Its garage, daylight and dimming rules are most practical to meet with a controller on every fixture.
• Pennsylvania moved to the 2021 IECC on January 1, 2026. Its garage and daylight rules are most practical to meet with a controller on every fixture.
• Rhode Island is on the 2024 IECC energy code. Its garage, daylight and dimming rules are most practical to meet with a controller on every fixture.
• Utah is on the 2021 IECC energy code. Its garage, daylight and dimming rules are most practical to meet with a controller on every fixture.
• Virginia is on the 2021 IECC. Its shutoff, daylight-dimming and garage rules are most practical to meet with a controller on every fixture.
• Arizona has no statewide energy code. Phoenix, Tucson, Chandler and Glendale enforce the 2024 IECC, which calls for automatic shutoff, occupancy sensors and daylight controls.
• New Hampshire is on the 2018 IECC, without the model code's testing section for lighting controls. NHSaves asks for performance testing on networked projects.
• Wisconsin moved to the 2021 IECC in September 2025, without the model code's occupancy-sensor rule. Daylight controls, dimming and shutoff schedules still apply.

What these figures do and don't promise is in our Terms.

Last updated: October 22, 2026