![Mary Anne Piette, a brown-haired person wearing a white collared shirt, smiles for a headshot against a dark background.](https://www.lbl.gov/wp-content/uploads/2022/07/Mary-Ann-Piette-2_0-e1658348038968.jpeg)
![The sun obscured behind smokey skies over a blue building.](https://www.lbl.gov/wp-content/uploads/2022/06/Capabilities-Landing_Impact-Module_FLEXLAB_XBD-202108-0095-001-scaled.jpg)
A testing facility for energy-efficient building technologies.
![Three people in safety gear standing in front of a truck.](https://www.lbl.gov/wp-content/uploads/2022/07/RT_energy-efficiency_XBD201408-01101-23.jpeg)
Researching programs and market incentives advancing a cleaner, affordable, and reliable grid.
![Smart city and dot point connect Modern Telecom System.](https://www.lbl.gov/wp-content/uploads/2022/08/iStock-1255236204.jpg)
Researchers team with the Department of Energy (DOE) to provide resources with the goal of connected communities that collectively maximize building, community, and grid performance.
![Lightbulbs.](https://www.lbl.gov/wp-content/uploads/2022/07/RT_energy-efficiency_EES-Homepage-Lighting_V4.jpeg)
Berkeley Lab’s research related to energy-efficient appliance standards has saved consumers millions of dollars in the U.S. and worldwide.
![Panoramic view of San Francisco skyline at sunrise.](https://www.lbl.gov/wp-content/uploads/2022/07/RT_energy-systems_iStock-1094809220-800px.jpeg)
Berkeley Lab researches the development and implementation of GEB modeling tools.
![Blurred car lights on a highway.](https://www.lbl.gov/wp-content/uploads/2022/07/RT_sustainable-transportation_hero-module_iStock-1031116496-e1657670016873.jpg)
Researchers are working closely with industry, cities, national laboratories, UC Berkeley, and other research institutions to develop robust solutions to critical transportation issues.
![Upward view of a high-performance window system with sun shining in the background.](https://www.lbl.gov/wp-content/uploads/2022/07/RT_energy-efficiency_XBD200705-00146-02.jpeg)
Berkeley Lab’s advanced technologies and software tools are the world standard in increasing the energy efficiency of windows and buildings.
![Upward view of a building with a colorful overlay.](https://www.lbl.gov/wp-content/uploads/2022/07/RT_energy-efficiency_building_eis-slide_0.jpeg)
Researchers are developing critical performance monitoring tools, providing energy and facility managers with new analysis and visualization capabilities.
![New York skyline against a sunset.](https://www.lbl.gov/wp-content/uploads/2022/07/RT_energy-efficicency_New-York-City-Skyline.jpeg)
Berkeley Lab is developing data and technologies that increase energy efficiency and improve the health, safety, and comfort of building occupants in the U.S. and worldwide.
![Aerial view of white roofed homes and streets forming circular patterns.](https://www.lbl.gov/wp-content/uploads/2022/07/RT_energy-efficiency_coolroof_shutterstock_138744083.jpeg)
Researchers are developing new strategies to cool buildings, cities, and the planet by making roofs, pavements, and cars cooler in the sun.
![A hand plugs in a charging cable in an electric car.](https://www.lbl.gov/wp-content/uploads/2022/07/RT_energy-efficiency_double-exposure-of-ev-charging-station-for-electric-car-in-concept-of-picture-id1356700581.png)
Researchers are analyzing why and when some people adopt certain technologies, such as electric vehicles, ride-sharing, and ride-hailing, while others don’t.
![Interior view of an energy management laboratory with yellow and grey machinery.](https://www.lbl.gov/wp-content/uploads/2022/07/RT_manufacturing_Superior-Energy-Performance_0.jpeg)
This team develops and deploys evidence-based energy management solutions to help organizations achieve their energy-related objectives.
![Energy meters lined up in a row.](https://www.lbl.gov/wp-content/uploads/2022/07/RT_energy-efficiency_adobestock_131736685.jpeg)
This group conducts unbiased research, analysis, and technical assistance on energy-efficiency markets and policies.
![Digital rendering of an outstretch arm holding a softball-sized Earth with splashing water around the frame](https://www.lbl.gov/wp-content/uploads/2022/08/globe_1_0.jpeg)
Working to better understand cooling systems to meet cooling needs affordably and in harmony with the planet.
![Boy and girl raising their hands while sitting in the class at elementary school.](https://www.lbl.gov/wp-content/uploads/2022/08/iStock-1328823183.jpg)
Engaging with schools to improve energy performance and indoor air quality and reduce carbon emissions. Berkeley Lab provides technical support for this Department of Energy campaign.
![Tianzhen Hong, a person with short black hair wearing a light collared shirt, photographed against a yellow background.](https://www.lbl.gov/wp-content/uploads/2023/06/Hong-portrait-2023-scaled-e1686759864685-330x330.jpg)
"We are developing and applying novel building performance modeling and simulation methods and tools to support the design and operation of low-energy, carbon-neutral, and climate resilient buildings across scales, integrating technological solutions, human behavioral strategies, and policy."
![C. Anna Spurlock, a person with short curly brown hair wearing glasses and a gray blazer over a black top, photographed against a light gray background.](https://www.lbl.gov/wp-content/uploads/2023/06/anna-spurlock_0-e1686759947499-330x330.jpg)
C. Anna Spurlock is a research scientist and a deputy department head in the Sustainable Energy and Environmental Systems Department. Anna has a leadership role in the Sustainable Transportation Initiative and also leads the Economics Research sub-team within the Energy Efficiency Standards Department.
![Ronnen Levinson, a person with short dark hair wearing a navy shirt, photographed against a dark copper background.](https://www.lbl.gov/wp-content/uploads/2023/06/Ronnen-levinson-330x400.jpg)
Ronnen Levinson is a staff scientist and leader of the Heat Island Group at Berkeley Lab. Within his research portfolio he develops cool roof, wall, and pavement materials; improves methods for the measurement of solar reflectance; and quantifies the energy and environmental benefits of cool surfaces.
![Artistic representation of a smart house](https://www.lbl.gov/wp-content/uploads/2024/03/Screenshot-2024-03-13-at-9.36.17 AM.png)
What might the cleaner, greener houses and apartments of 2050 look like if they take advantage of new technologies? Berkeley Lab energy technology researchers gave a glimpse into what a home built in 2050 might look like.
Art Rosenfeld, a physicist and Berkeley Lab Distinguished Scientist Emeritus, transformed the fledgling field of energy efficiency from a research afterthought into a scientific discipline.
Berkeley Lab scientists discuss how advances in energy storage can help us prevent extreme weather-related blackouts, adopt more renewable energy, and build bigger, better, more environmentally responsible batteries.
![Exterior of a school building.](https://www.lbl.gov/wp-content/uploads/2024/05/Newscenter_Cluster_1190x750px_iStock-1354705821-890x561.jpg)
![Aerial photograph of the FLEXLAB complex](https://www.lbl.gov/wp-content/uploads/2023/12/LBL_1995x930px_XBD201410-01203-01-890x415.jpg)
![Orange hued city](https://www.lbl.gov/wp-content/uploads/2023/08/heat-wave-city-shutterstock_Eli-Mordechai-2020982885-1240px-890x594.jpeg)
![Evening traffic in downtown Los Angeles.](https://www.lbl.gov/wp-content/uploads/2022/07/RT_energy-systems_iStock-1129009264.jpg)
![Oil refinery at night.](https://www.lbl.gov/wp-content/uploads/2022/07/RT_manufacturing_hero-module_iStock-582256640.jpg)
![View of highway at sunrise with a semi coming toward the viewer.](https://www.lbl.gov/wp-content/uploads/2022/06/RT_sustainable-transportation_iStock-1050930494.jpg)