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AIR CONDITIONING ENERGY SAVINGS
In 2001, researchers tested a white roof on a large Austin retail store; the study reported lower roof temperatures and an 11% reduction in cooling energy useA 2001 study in Austin demonstrated that white roofs lowered building temperatures significantly. This change reduced air conditioning ener...
In 2011, NASA built a 50,000-square-foot California office that used 90% less drinking water and was designed to produce 20% more energy than it neededNASA’s Sustainability Base was designed as a 50,000-square-foot office that used just 12% of conventional electricity and 10% of potable wa...
In 1996, Florida researchers whitened 7 shops in a Cocoa strip mall; roof surfaces fell by as much as 70°F, cooling energy dropped 25.3%, and peak demand dropped 40.3%In an innovative Florida trial, it was found that white roofs significantly decreased heat levels and energy usage. Traditionally, unpainte...
In 2011, Lovell FHCC joined a green federal challenge with 3 focus areas. 3 years later, LED retrofits cut electricity 15%, saving $500,000 and 7.4 million pounds of CO2Lovell FHCC lighting project remains a useful example of how sustainability goals can produce measurable results when they are connected to...
In 2009, the U.S. Air Force put 525,000 computers under ENERGY STAR power controls, replacing wasteful always-on use with sleep settings and targeting $15 million in annual savingsAir Force's approach focused on putting computers into lower-power states when they were not being actively used. Under the settings being ...
In 2011, GSA’s Chicago Federal Center joined the green challenge with 6,700 workers. 1 year later, an HVAC overhaul cut natural gas use 25% and saved $140,000 that yearThe Chicago Federal Center found a practical way to reduce energy use. GSA upgraded its HVAC system across the large federal complex. The c...
Students could face a school holiday as Ohio heat index nears 102°F — but whether classes are canceled depends on one crucial building featureSome Avon Lake schools closed due to extreme heat while others remained open. Older buildings without air conditioning became unsafe for st...
In 2024, Stanford-linked researchers redesigned radiative cooling for vertical walls; the emitter ran 2.5°C below ambient and 8.9°C cooler than white paintA team of researchers has unveiled a groundbreaking material designed to cool building walls effectively. This revolutionary emitter has th...
In 2021, Berkeley Lab made a roof coating that switches at 67°C. Today, it beats existing coatings in 12 of 15 US climate zones, cutting household electricity use 10%Installing TARC could help the average U.S. household reduce electricity consumption by up to 10 percent annually. Another advantage of TAR...
In 1995, Florida researchers coated a Cocoa Beach school roof white; over the following year, chiller energy use fell 10%, saving 13,000 kWh, while peak demand fell 35%A study conducted in Florida revealed that white roofs can drastically lower cooling costs, marking a significant achievement in the realm ...
In 2006, Portland converted 45,000 streetlights to LEDs. 20 years later, its streetlights and signals use 66% less energy and save the city $1.5 million every yearTwo decades after 2006, Portland’s lighting story offers a useful lesson for cities considering their own energy transitions. The important...
Notre Dame engineers tested a clear window coating that filters solar heat; model interiors stayed up to 7.2°C cooler without electricityInnovators have developed a cutting-edge transparent coating that effectively blocks solar heat while still allowing natural light to perme...
In 1996, architects in Harare built a shopping mall modeled on termite mounds; its passive chimney vents kept the interior cool using 90% less energyConstructed in 1996, Harare's Eastgate Center exemplifies innovative design by mimicking the cooling attributes of termite mounds. This vis...
In 2003, NASA Marshall tested a dual-pulse laser ignition system for rocket engines; a separate microgravity study examined laser ignition and flame spread in solid fuelNASA engineers have successfully tested an innovative dual-pulse laser ignition system designed for rocket engines. This groundbreaking sys...
In a 2025 study, Penn State researchers tested porous PMMA sheets that reflected 96.4% of sunlight; a test box stayed 14.7°F cooler than the outdoor airInnovative researchers have crafted a groundbreaking porous plastic sheet that cools without any electrical input. By reflecting sunlight a...
In a 2011 Las Vegas test, a 15.24-cm wet roof pond lowered indoor peak operative temperature by about 8.5°C versus the outdoor maximumIn the summer of 2011, a groundbreaking building in Las Vegas experimented with roof pond cooling. Results indicated that wet roof ponds ef...
MIT built a three-layer passive cooling panel of aerogel, hydrogel and reflective material; tests cooled it 9.3°C below ambient and suggested up to 40% longer food storage in humid conditionsResearchers have created a passive cooling system that uses natural processes. This innovative device cools significantly below ambient air...
August Energy, Energeia partner to create $100 million energy-efficiency platform in IndiaAugust Energy and Energeia launch a $100 million platform for Indian businesses. This initiative focuses on decarbonisation without upfront...
In 2023, researchers found shade cooled Singapore streets by 0.8°C across 20 sites. Today, vegetation is estimated to save 228 GWh of energy yearlySingapore's trees offer significant cooling benefits for city streets. Shaded areas were found to be cooler, reducing heat stress for peopl...
In 2024, scientists built a window that kept a model house about 7°C cooler, without electricity or blocking the viewEngineers in South Korea have developed an innovative smart window that cools spaces sans electricity. This remarkable glass not only refle...