Mary Anne Piette, a brown-haired person wearing a white collared shirt, smiles for a headshot against a dark background. The sun obscured behind smokey skies over a blue building. Three people in safety gear standing in front of a truck. Smart city and dot point connect Modern Telecom System. Lightbulbs. Panoramic view of San Francisco skyline at sunrise. Blurred car lights on a highway. Upward view of a high-performance window system with sun shining in the background. Upward view of a building with a colorful overlay. New York skyline against a sunset. Aerial view of white roofed homes and streets forming circular patterns. A hand plugs in a charging cable in an electric car. Interior view of an energy management laboratory with yellow and grey machinery. Energy meters lined up in a row. Digital rendering of an outstretch arm holding a softball-sized Earth with splashing water around the frame Boy and girl raising their hands while sitting in the class at elementary school. Tianzhen Hong, a person with short black hair wearing a light collared shirt, photographed against a yellow background.

"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.

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.

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.

Collage of transit, highways, solar panels, factories, homes, and a sunrise over a prairie. Natalie Popovich, a dark-haired person wearing a colorful button up shirt, smiles against a tree.

After the Justice40 (J40) Initiative was established in 2021 by President Biden with the objective that 40% of benefits from certain federal investments go to disadvantaged communities, five scientists at Berkeley Lab played a key role in mapping out how to achieve this goal in federal programs that focus on climate change, clean energy, energy efficiency, and clean transit.

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.

 Orange hued city Two women standing at opposite sides of a colorful sewing room. Digital illustration of the world outlined in green against a dark background, with various renewable energy icons and numbers floating around. Evening traffic in downtown Los Angeles. Oil refinery at night. View of highway at sunrise with a semi coming toward the viewer.