An urban wind and solar energy system that may actually work

Building-integrated wind turbine technology has been receiving a lot of heat for not being able to deliver what it promises in terms of energy production.

Fast Co. Exist profiles a system that places the turbines where they can actually turn. The WindRail was designed in Zurich, Switzerland, where there isn’t enough space for a wind or solar park. Sitting between a building’s façade and the roof edge, the system combines wind and solar energy harvesting, taking advantage of the building’s air flows, even if it's in the middle of a city.

The system was developed by the Anerdgy. “When wind flows around the building, it creates a pressure difference between the façade and the rooftop. The façade has a higher wind pressure,” CEO of Anerdgy Sven Koehler told Fast Co. Exist. “Because we are channeling the wind and making a connection between the high and low pressure areas, the speeds are faster and we have more energy.”

Koehler, an engineer and economist, came up with the idea with the help of his parents. After years of research, he came up with the WindRail System and started the company in 2012.

According to the company, pressure effect accounts for 50% of the power the WindRail generates. The device comes in two meter modules and can generate 1,500 to 2,000 kWh a year. For comparison, the average U.S. home uses 10,837 kWh a year, Fast Co. Exist reports.

Green | Aug 7, 2023

Rooftop photovoltaic panels credited with propelling solar energy output to record high

Solar provided a record-high 7.3% of U.S. electrical generation in May, “driven in large part by growth in ‘estimated’ small-scale (e.g., rooftop) solar PV whose output increased by 25.6% and accounted for nearly a third (31.9%) of total solar production,” according to a report by the U.S. Energy Information Administration.

Resiliency | Aug 7, 2023

Creative ways cities are seeking to beat urban heat gain

As temperatures in many areas hit record highs this summer, cities around the world are turning to creative solutions to cope with the heat. Here are several creative ways cities are seeking to beat urban heat gain.

Government Buildings | Aug 7, 2023

Nearly $1 billion earmarked for energy efficiency upgrades to federal buildings

The U.S. General Services Administration (GSA) recently announced plans to use $975 million in Inflation Reduction Act funding for energy efficiency and clean energy upgrades to federal buildings across the country. The investment will impact about 40 million sf, or about 20% of GSA’s federal buildings portfolio.

Codes and Standards | Aug 7, 2023

Cambridge, Mass., requires net-zero emissions for some large buildings by 2035

The City of Cambridge, Mass., recently mandated that all non-residential buildings—including existing structures—larger than 100,000 sf meet a net-zero emissions requirement by 2035.