Initiative Landing Page

Natural Interior Daylight Initiative encourages homeowners, architects and building owners to use daylight as a primary light source.

A campaign to reduce our carbon emissions (and enjoy nicer lighting) in our buildings.

RESIDENTIAL HOME

Proper lighting makes your home feel open. It’s easier to read, cook, and even enjoy colors. Natural interior daylight in your home brightens the mood.

Learn More

OFFICE BUILDINGS

Offices lit with natural interior daylight have been proven to increase student performance, and provide a stimulating space for teacher and student.

Learn More

INDUSTRIAL FACILITY

There is plenty of evidence that natural interior daylight in the work environment creates happier and more productive factory workers.

Learn More

Sponsor since 2016

The country of Portugal

Sponsor since 2012

Volvo Trucks

Sponsor since 2007

Caleffi S.p.a.

Sponsor since 2007

CentiMark Corporation

Sponsor since 2019

Hope's Windows

Sponsor since 2008

Southwest Gas Utility

Sponsor since 2016

Daikin Manufacturing

Sponsor since 2016

Friedrich Air Conditioning

Sponsor since 2007

SolarOne Solution

WE WANT BETTER LIGHT

Natural interior daylight offers a multitude of benefits beyond energy savings. It is the highest quality light source available for interior environments, it is flicker-free and it provides excellent color rendering and color balance. And natural interior daylight is one of the fastest greenhouse gas reducing paybacks you can buy, because it shrinks both energy bills and re-lamping maintenance costs. The fact is, introducing daylight into buildings provides energy savings, excellent lighting quality and more beautiful interior spaces.

  1. Does natural interior daylighting pay for itself?

    Lighting accounts for roughly one third of electricity used by commercial or educational facilities in the United States. Whereas natural interior daylight requires no energy beyond sunlight. And Natural interior daylight is about 10-times more efficient then rooftop PV cells for lighting a room.

  2. How do students preform under natural interior daylight?

    I am text block. Click ediThere is also plenty of evidence that daylighting improves occupant productivity in both schools and offices. Especially in learning environments, skylit classrooms provide a natural and stimulating space for teacher and student. While studies show that poor lighting adversely affects learning, daylighting has been proven to increase student performance in math and reading scores, as well as improving attendance. t button to change this text.

  3. How do students preform under natural interior daylight?

    I am text block. Click ediThere is also plenty of evidence that daylighting improves occupant productivity in both schools and offices. Especially in learning environments, skylit classrooms provide a natural and stimulating space for teacher and student. While studies show that poor lighting adversely affects learning, daylighting has been proven to increase student performance in math and reading scores, as well as improving attendance. t button to change this text.

  4. How do office workers preform under natural interior daylight?

    Studies show that office workers have few sick days. The human performance numbers in daylighting systems are important because the ROI for daylighting installations can sometimes be a difficult sell. In fact, the human performance gains can outweigh the energy savings, where human performance can be measured in financial terms.

The Cloud Changes Everything

"The Cloud Commuter is highly skilled, eco-friendly, doesn't take up valuable office space and won't be asking for health benefits.

Well Fosters a Holistic Formula for Better Health & Wellness

"When the renovation was complete, it was unbelievable. Students were astonished by the results." -- Ken Fibbi, Director of Buildings for the West Allegheny School District.

Room Air Conditioner Improves Ventilation in Emory University Dorm
Skylight Increases Worker Productivity for Staff Zone Office
Continuous Wall Insulation in Homes and Buildings
Inverter Air Conditioner Cuts Energy Use in Atlanta Highrise
Balcony Windows Bring Fresh Air into Rhode Island Home
Natural Daylight in Big-Box Retail Stores Boosts Consumer Sales
Classrooms Optimized With Natural Daylight Increase Student Performance
As Standard Option in Builder’s Home Designs, Skylights Increase ROI
Roadmap to Efficiency: Residential Cooling by Inverter-Driven HVAC
Criteria for Evaluation: Fine Filtration For HVAC Cooling Towers

FAQ: Why don't we see more natural interior daylight in buildings today?

Eneref Institute has identified seven primary reasons we don’t see more natural interior daylight in our buildings. To learn the seven market obstacles to daylighting, download Eneref Institute’s report.