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ENERGY EFFICIENT BUILDING
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 a 2025 study, researchers fired clay bricks with 10% eggshell powder; thermal conductivity was 50% lower than in untreated bricksInnovators are integrating eggshell waste into fired clay bricks, effectively reducing heat transfer in building structures. By using a 10%...
- In 2018, a University of Hawaii study compared green and white roofs in Honolulu; the green roof was reported to have lower peak temperatures at the surface and nearby airA University of Hawaii graduate student tested green roofs against white ones. The green roof proved significantly cooler than the adjacent...
- In 2009, the Empire State Building rebuilt 6,500 windows on site rather than replacing them, cutting energy use by 38% and paying for itself in three yearsThe Empire State Building underwent a significant renovation focusing on its windows. This project involved rebuilding existing windows ins...
- 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 2003, Fort Lewis trained 25 public works staff to improve building energy use. 2 years later, the base had achieved 20-30% greater efficiency than the ASHRAE standardFort Lewis Army Base used staff training, equipment upgrades, renovation projects, and improved operating practices to strengthen building ...
- Just Join the Paani Points: India’s data centre boom puts water use and local security under scrutinyData centres' rapid expansion raises concerns about water stress in Indian cities. Existing regulations struggle to manage the sector's sig...
- 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...
- In 2025, Egyptian researchers mixed eggshell waste into clay bricks to block the walls from absorbing outside heat and transferring it indoors during hot climates; heat transfer dropped 50%Egyptian researchers tested clay bricks containing eggshell waste and found that a 10% eggshell formulation fired at 1,100°C reduced therma...
- In 2023, CUHK researchers milled glass bubbles for 5 minutes before mixing cooling paint; solar reflectivity rose from 75.8% to 95.8% during field tests at noonInnovative researchers have unveiled a groundbreaking paint designed for energy-free cooling in buildings. By incorporating larger glass bu...
- 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 ...
- City University of Hong Kong built a radiative-cooling ceramic tile reflecting 99.6% of sunlight; field tests found it about 5°C cooler than standard tilesResearchers developed a new ceramic tile inspired by beetles. This tile reflects 99.6% of sunlight and releases absorbed heat effectively. ...
- 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...
- 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 2023, researchers modeled fluid-filled microchannel windows; computer simulations estimated the liquid system could cut building energy use by 43 percentResearchers are developing innovative liquid windows that can control heat and light transmission. These tunable windows could potentially ...
- August Energy, Energeia form $100 million platform to finance energy-efficiency upgradesThe partnership, called August Energeia, will initially focus on cooling-as-a-service, allowing commercial and industrial customers to upgr...
- In 2017, CU Boulder engineers turned glass microspheres into a 50-microliter film; 10 to 20 square meters of it could help cool a family-sized houseA team of researchers has developed a groundbreaking thin film that cools surfaces without the need for electricity or water. By employing ...
- 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 2019, University of Maryland researchers stripped lignin from wood; the resulting cooling material stayed 12°F cooler than natural wood in an Arizona testScientists developed engineered wood to reflect sunlight and release heat. This material stayed cooler than natural wood when exposed to su...
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