The roof of Carnegie Vanguard High School features an example of the Green Stormwater Infrastructure. Photo courtesy of the City of Houston

The City of Houston has launched a pilot project that will speed up the permitting process for environmentally friendly stormwater projects.

The Green Stormwater Infrastructure Expedited Permitting Pilot Program, announced August 4, will approve at least 10 projects in the Houston area by August 2022. In conjunction with the Resilient Houston initiative, the city is targeting 100 green stormwater infrastructure projects by 2025.

The city is working on rules and regulations that will govern development of green stormwater infrastructure. Mayor Sylvester Turner rolled out a tax abatement program for green stormwater infrastructure projects last December.

According to a city news release, green stormwater infrastructure improves the performance of drainage systems and can make real estate projects more attractive to buyers, while delivering benefits such as heat reduction, improvement of air and water quality, and conservation of native habitats.

Green stormwater infrastructure helps reduce the downstream impact of development and mimics how rain behaves when it falls onto an undeveloped green landscape. Techniques that fit into this category include green roofs, rain gardens, rainwater harvesting, permeable pavement, and urban forests.

"In the aftermath of Hurricane Harvey, we have taken critical steps to address our flooding and drainage challenges. As Houston has rapidly developed, we have relied on traditional gray infrastructure systems to keep us safe. However, as we build forward, we must consider new and innovative approaches for achieving greater flood resilience in Houston," the city says in a 2019 report about green stormwater infrastructure.

Traditional "gray" infrastructure, designed to move urban stormwater away from the built environment, includes curbs, gutters, drains, piping, and collection systems, according to the U.S. Environmental Protection Agency (EPA). Generally, gray infrastructure collects and moves stormwater from impervious surfaces, such as roadways, parking lots, and rooftops, and into a series of pipes that ultimately send untreated stormwater into local waterways.

In tandem with Houston's new permitting program, the city has created the Green Stormwater Infrastructure Awards and Recognition Program. The program salutes green development and redevelopment projects. It "is intended to recognize some of the most effective and exemplary of 'green' building in Houston and encourage more development projects to adopt resilient measures," according to the news release.

Projects considered for the awards program will be judged on factors such as:

  • Proximity to nearby communities.
  • Impact on nearby communities.
  • Efforts to conserve native plants.

Turner says the permitting and awards programs are part of an initiative aimed at "futureproofing our city" to ease harm caused by hurricanes and flooding.

"In Houston and in towns across the U.S., climate change is no longer knocking on our front door; it's broken into the house," Turner wrote in an opinion piece published in July by The Hill.

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Houston researcher builds radar to make self-driving cars safer

eyes on the road

A Rice University researcher is giving autonomous vehicles an “extra set of eyes.”

Current autonomous vehicles (AVs) can have an incomplete view of their surroundings, and challenges like pedestrian movement, low-light conditions and adverse weather only compound these visibility limitations.

Kun Woo Cho, a postdoctoral researcher in the lab of Rice professor of electrical and computer engineering Ashutosh Sabharwal, has developed EyeDAR to help address such issues and enhance the vehicles’ sensing accuracy. Her research was supported in part by the National Science Foundation.

The EyeDAR is an orange-sized, low-power, millimeter-wave radar that could be placed at streetlights and intersections. Its design was inspired by that of the human eye. Researchers envision that the low-cost sensors could help ensure that AVs always pick up on emergent obstacles, even when the vehicles are not within proper range for their onboard sensors and when visibility is limited.

“Current automotive sensor systems like cameras and lidar struggle with poor visibility such as you would encounter due to rain or fog or in low-lighting conditions,” Cho said in a news release. “Radar, on the other hand, operates reliably in all weather and lighting conditions and can even see through obstacles.”

Signals from a typical radar system scatter when they encounter an obstacle. Some of the signal is reflected back to the source, but most of it is often lost. In the case of AVs, this means that "pedestrians emerging from behind large vehicles, cars creeping forward at intersections or cyclists approaching at odd angles can easily go unnoticed," according to Rice.

EyeDAR, however, works to capture lost radar reflections, determine their direction and report them back to the AV in a sequence of 0s and 1s.

“Like blinking Morse code,” Cho added. “EyeDAR is a talking sensor⎯it is a first instance of integrating radar sensing and communication functionality in a single design.”

After testing, EyeDAR was able to resolve target directions 200 times faster than conventional radar designs.

While EyeDAR currently targets risks associated with AVs, particularly in high-traffic urban areas, researchers also believe the technology behind it could complement artificial intelligence efforts and be integrated into robots, drones and wearable platforms.

“EyeDAR is an example of what I like to call ‘analog computing,’” Cho added in the release. “Over the past two decades, people have been focusing on the digital and software side of computation, and the analog, hardware side has been lagging behind. I want to explore this overlooked analog design space.”

12 winners named at CERAWeek clean tech pitch competition in Houston

top teams

Twelve teams from around the country, including several from Houston, took home top honors at this year's Energy Venture Day and Pitch Competition at CERAWeek.

The fast-paced event, held March 25, put on by Rice Alliance, Houston Energy Transition Initiative and TEX-E, invited 36 industry startups and five Texas-based student teams focused on driving efficiency and advancements in the energy transition to present 3.5-minute pitches before investors and industry partners during CERAWeek's Agora program.

The competition is a qualifying event for the Startup World Cup, where teams compete for a $1 million investment prize.

PolyJoule won in the Track C competition and was named the overall winner of the pitch event. The Boston-based company will go on to compete in the Startup World Cup held this fall in San Francisco.

PolyJoule was spun out of MIT and is developing conductive polymer battery technology for energy storage.

Rice University's Resonant Thermal Systems won the second-place prize and $15,000 in the student track, known as TEX-E. The team's STREED solution converts high-salinity water into fresh water while recovering valuable minerals.

Teams from the University of Texas won first and second place in the TEX-E competition, bringing home $25,000 and $10,000, respectively. The student winners were:

Companies that pitched in the three industry tracts competed for non-monetary awards. Here are the companies named "most-promising" by the judges:

Track A | Industrial Efficiency & Decarbonization

Track B | Advanced Manufacturing, Materials, & Other Advanced Technologies

  • First: Licube, based in Houston
  • Second: ZettaJoule, based in Houston and Maryland
  • Third: Oleo

Track C | Innovations for Traditional Energy, Electricity, & the Grid

The teams at this year's Energy Venture Day have collectively raised $707 million in funding, according to Rice. They represent six countries and 12 states. See the full list of companies and investor groups that participated here.

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This article originally appeared on our sister site, EnergyCapitalHTX.com.