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Daylight Hour

Building Energy Exchange

Friday, June 20, 2014 from 12:00 PM to 1:00 PM (EDT)

Daylight Hour

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Event Details

The Daylight Hour.  A single hour when we ask you to TURN IT OFF.

Most offices have their lights on even when they are not needed. Spaces near exterior walls often receive enough daylight to work by, without the aid of electric lighting, but most often we leave the lights on anyway.  This is a critical issue because the times when daylight is most available (summer afternoons) coincides with peak demand- the time at which we are demanding the most energy from the grid.   This peak energy is the most expensive energy, and typically the dirtiest and most harmful to our global climate because the oldest, least efficient plants are brought online to meet this need. Our recent study, Let There Be Daylight, found that owners and tenants could save $70 million every year by introducing daylight responsive lighting systems. At the same time, balanced day-lit spaces are often the most pleasant to spend time in, and studies suggest these spaces promote our health and well-being, improve productivity and reduce absenteeism. A variety of lighting control systems are available that respond to the presence of daylight by reducing electric light levels- but these systems are not standard. 

To demonstrate the availability of daylight and draw attention to this important issue Green Light New York is organizing the "Daylight Hour”- a single hour in the workday when we turn off the lights in day-lit spaces.  Green Light will be tracking participants, promoting their involvement and efforts, and estimating the energy savings of the Daylight Hour to publicize the impact.  This activity will act as a springboard to deliver programs and other resources on the strategies and technologies that enable the daylighting of office spaces. 

Register your organization for the Daylight Hour, above.

You'll be asked for some basic information like:

- Name of organization
- Whether you are a building owner or tenant
- Daylight Hour ambassador contact info
- Estimate of the area of the spaces that will participate
- Quick description of the space types and lighting systems

Participants will be asked to post photos on Twitter or Facebook from their day-lit spaces at the beginning and the end of the Daylight Hour to demonstrate their participantion. Use #DaylightHour.

Prizes will be awarded to the most successful Daylight Hour participants for:
Big Kahuna: Most participating square footage
Social Butterfly: Social media posts with the greatest reach
Daylight Empire: Most comprehensive portfolio participation
Selfie Sultan: Best Instagram photograph
Precocious Poster: Most creative social media 

Date & Time:
June 20th, 12:00 pm to 1:00 pm

To sponsor the Daylight Hour project contact us: info@greenlightny.org



Buro Happold Consulting EngineersHR&A Advisors
International Living Future InstituteJB&B Consulting Engineers
MechosystemsNatural Resource Defense Council

Perkins+WillSKidmore, Owings & Merrill
Sustainable Energy Partnerships Terrapin Bright Green




318 Technology Inc


AKF Group, LLC


Allen + Killcoyne Architects


American Efficient Lighting


Association of Energy Affordability (AEA)


Bleecker Associates


Brooklyn Greenroof, LLC


Center for Active Design


CUNY Building Performance Lab


Dattner Architects


Direct Marketing Association


Domingo Gonzalez Associates


Energy Paradiso


Goldman Copeland


Green Light Sustainability Advisors


HLW International


HTA Lighting






Linnaea Tillett Lighting Design, Inc.


Lockheed Martin Energy Solutions


Mertz Gilmore Foundation




New York City Landmarks Preservation Commission


New York Power Authority


NYC Energy Efficiency Corp. (NYCEEC)


O'Blaney Rinker Associates


Optimal Energy, Inc.


Renfro Design Group, Inc.


Smart Fiber Skylights


South Side Design & Building


Steven Winter Associates, Inc.


Taitem Engineering


The Durst Organization


The Lower East Side Ecology Center


The Sallan Foundation


Urban Future Lab


Urban Green Council


Urban Green Energy


UW Integrated Design Lab






Watt Not, LLC


Westlake Reed Leskosky


Wildan Energy Solutions (which one)


Willdan Energy Solutions (which one)


WNUK SPURLOCK Architecture





Have questions about Daylight Hour? Contact Building Energy Exchange

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