News & Events

Lab Helps South Africa Become Energy Efficient

September 27, 2016

Launched in 2014, EERE International’s South Africa Clean Energy Project brings together experts from the U.S. and South Africa, including Lab researchers, led by ETA’s Charlie Curcija (center).

Charlie Curcija (center)

Fluorescent Ruby Red Roofs Stay as Cool as White

September 21, 2016

Elementary school science teaches us that in the sun, dark colors get hot while white stays cool. Now new research from Lawrence Berkeley National Laboratory (Berkeley Lab) has found an exception: Scientists have determined that certain dark pigments can stay just as cool as white by using fluorescence, the re-emission of absorbed light.

Grants for Greener Buildings

September 14, 2016

Lawrence Berkeley National Laboratory (Berkeley Lab) has been awarded more than $4 million by the Department of Energy (DOE) to undertake three projects aimed at improving the energy efficiency of buildings, which account for more than 40 percent of the country's energy consumption and greenhouse gas emissions.

THERM Sample Color Infrared Results

Your Air Conditioning is Making the Heat Wave Worse

July 27, 2016

While air conditioning temporarily cools, it’s making our world hotter. According to Berkeley Lab researchers, a crash program to maintain or establish three shade trees per building and make all roofs and pavement in U.S. cities reflective could decrease national cooling demand by 20 percent by driving temperatures lower.

Residential air conditioning units

Registration is open for the 4th International Conference on Countermeasures to Urban Heat Islands

April 12, 2016

Registration is now open for the Fourth International Conference on Countermeasure to Urban Heat Island (4th IC2UHI) 2016

Singapore on 30-31 May and 1 June 2016.

The theme of the conference: Countering Urban Heat Island (UHI) and Climate Change through Mitigation and Adaptation.

Join the cool roofing industry at the 2016 International Roof Coatings Conference

April 12, 2016

Berkeley Lab is co-sponsoring the RCMA International Roof Coatings Conference. Join the cool roofing industry at the 2016 conference in Philadelphia this year. 

The event includes an exciting lineup of expert speakers and educational sessions, as well as a number of fun networking events and activities for our attendees.

Dates: July 18-21, 2016

Hotel: Sonesta Hotel Philadelphia

Energy Efficient Windows to Reach Market Quicker with New Tool

April 05, 2016

About 10% of the energy used in U.S. buildings—approximately 4 quads a year—compensates for energy lost through windows.

Screenshot of PPG Industries’ online tool, Construct.

Berkeley Lab Scientists Developing Paint-on Coating for Energy Efficient Windows

February 25, 2016Low-cost coating would disrupt the building retrofit market and potentially save billions in electricity.
Eleven glass bottles painted with the window coating.

Cool Roofs in China Offer Enhanced Benefits During Heat Waves

December 22, 2015New Berkeley Lab study uses regional climate model to compare heat waves to normal summer conditions.

New “Cool Roof Time Machine” Will Accelerate Cool Roof Deployment

April 14, 2015Standards body approves Berkeley Lab’s method to mimic natural soiling of roofing materials.

Cool roofs can help keep buildings cool, thus lowering the building’s energy use, while also mitigating the urban heat island effect by reflecting sunlight away from buildings and cities. But as cool roofs age and get soiled, how much of their reflectance do they lose?

Sharon Chen sprays roofing material with soiling mixture.

HIG scientist, Ronnen Levinson, featured in new video describing cool roofs as one of the Lab's 8 Big Ideas

November 19, 2014

Berkeley Lab scientists, including the Heat Island Group's Dr. Ronnen Levinson, each presented one of the Lab's 8 Big Ideas in front of a packed house in Oakland, CA on 8 October, 2014. His presentation, "Cool Roofs through Time and Space", featured the new California Cities Albedo Map.  

Related Video:

New Website Focuses on Applying Lessons of Berkeley Lab's Energy-Efficient Glazing and Façades Research

November 06, 2014

A new website intended to help architects, building engineers, and manufacturers develop and make better use of energy-efficient glazing and façade systems in commercial buildings is now available.

USA TODAY cites California's cool pavements bill (AB296) as leading example of nation's best climate preparedness

October 07, 2014

California has completed the highest number of goals to prepare for climate change, followed by Massachusetts and New York, according to a first-of-its-kind 50-state tracking tool unveiled Thursday.

HIG members use aerial imagery to map roof albedo across entire cities

September 27, 2014

How cool is your roof? If you live in the California cities of Bakersfield, Long Beach, Los Angeles, San Francisco, or San Jose, you may be able to find out.

Scientists from the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have created an interactive map that displays the solar reflectance (also known as albedo) of individual roofs in these five West Coast cities.

Ronnen Levinson discusses the new interactive rooftop reflectance map with Southern California Public Radio listeners

September 27, 2014

Ronnen Levinson, Heat Island Group leader and staff scientist, was recently interviewed by Southern California Public Radio to discuss the new interactive rooftop reflectance map for California cities. 

You can view the article and listen to the radio segment here, and you can check out the map at