One of the winning teams at Climathon has an idea for a microgrid system in Houston's emerging innovation corridor. Photo via houston.org

More than 6,000 participants in 145 cities around the world gathered virtually for last year's Climathon, a global event put on by Impact Hub Houston to unite innovators and collaborate on climate solutions. When Winter Storm Uri left the Texas energy grid in a state of crisis, one Climathon Houston team's proposal for energy reliability became all the more important.

Last year, the City of Houston unveiled its first Climate Action Plan to address the city's challenges and strive to lead the energy transition. It was the perfect roadmap for Climathon Houston, a hackathon where eleven teams gathered to develop and pitch a concept to align with the city's new plan.

Of the three winning teams, one idea was prescient in its approach to energy. Six energy-focused Texans drew up plans for InnoGrid, a cost-effective strategy to build the first microgrid in Houston. What started as a pitch has become a developed proposal gaining collaborator and city interest in the wake of Uri.

Bryan Gottfried, Edward D. Pettitt II, Andi Littlejohn, Paresh Patel, Ben Jawdat, and Gavin Dillingham created InnoGrid to to help achieve the CAP's energy transition and net-zero emissions goals. With climate events increasing rapidly, the team of innovators saw an opportunity to create a sustainable solution — the first Houston microgrid.

In just an hour and a half of brainstorming, the team sought to create a similar model to Austin's Whisper Valley microgrid — a project that's currently in development. While Whisper Valley is a master plan community, the team wanted to create a microgrid to support a larger picture: the city of Houston.

"I had been following transactive energy models [such as] peer-to-peer electricity trading like Brooklyn Microgrid/LO3 Energy and Power Ledger since their inception. This inspired my vision for a novel microgrid that would demonstrate such technologies in the energy capital of the world that is otherwise primarily focused on oil and gas, and natural resources," explains Patel, founder and CEO of e^2: Equitable Energy.

When Pettitt joined the group, he proposed the growing Houston Innovation Corridor as the home to InnoGrid. The four-mile stretch between the Texas Medical Center and Downtown is already home to green technology, making it an ideal fit.

"You're going into an area that was already being redeveloped and had this innovation kind of mentality already," explains Gottfried, a geoscientist and current MBA student at University of Houston Bauer College of Business.

After winning Climathon Houston, the team continued to meet weekly in hopes of making InnoGrid a reality.

The case for a microgrid

The InnoGrid team started with the goal of making energy reliable and resilient in the face of climate change. While previous storms like Hurricane Ike have left millions of Texans without power, Winter Storm Uri was one of the most destructive tragedies to face Texas. The unexpected February storm left 4.5 million Texans without electricity and resulted in at least 111 deaths.

As InnoGrid's team members struggled with burst pipes and loss of power, the team juggled the task of submitting a grant application to the Department of Energy during a catastrophic winter storm. The timing was not lost on them.

"It underscored the need for us to do something like this," shares Gottfried.

To understand how impactful a Houston microgrid can be, you first must understand how a microgrid works. A microgrid is a local energy grid made of a network of generators combined with energy storage. The microgrid has control capability, meaning it can disconnect from a macro grid and run autonomously.

Ultimately, microgrids can provide reliability and drive down carbon emissions. Using smart meters, the grids can even provide real-time energy data to show the inflow and outflow of electricity. In the instance a microgrid does go down, it only affects the community — not the entire state. Likewise, during a power outage to the main grid, a microgrid can break away and run on its own.

Microgrids have been deployed by other cities to mitigate the physical and economic risks caused by power outages, but the use of a project like InnoGrid feels especially timely given recent events and the limitations of the Texas Interconnect.

The Texas grid is isolated by choice, separated from the eastern and western interconnects. Texas' isolated energy grid resulted in a massive failure, proving deregulation can certainly backfire. Updating the electric grid has an expensive price tag, but microgrids show a promising and cost-effective model for the future.

"I thought if microgrids and mini-grids are enabling millions in off-grid frontier markets at the base of the pyramid [like Asia, Sub-Saharan Africa, etc.] to essentially leapfrog legacy energy infrastructure, why should we not upgrade our aging power system with the latest tech that is digitalized, decarbonized, decentralized/distributed, and democratized at the top of the pyramid," asks Patel.

Many hospitals, universities, and large technology firms have already established their own microgrids to protect equipment and provide safety. Still, smaller businesses and homes in the community can suffer during outages.

InnoGrid's proposal seeks to use existing and proven renewable energy sources like wind, solar and geothermal energy. The storage technologies used would include battery, kinetic, compressed air, and geomechanical pumped storage.

"From the perspective of an early-stage hardware startup, one of the most important things is finding a way to validate and test your technology," explains Jawdat, founder and CEO of Revterra and adviser to the InnoGrid team. He explains that the microgrid "can also be a testbed for new technologies, specifically, new energy storage technologies," through potential partnerships with companies like Greentown Labs, which is opening its Houston location soon.

Battling inequity 

While the outlook for a community microgrid is enticing, there are also challenges to address. One key challenge is inequity, which is a key focus of Pettitt who was drawn to the team's goal of providing stability for companies and residences in Houston.

Pettitt, who is seeking a Ph.D. in urban planning and environmental policy at Texas Southern University, has a background in public health and frequently works with the Houston Coalition for Equitable Development without Displacement. "I'm really looking at the intersection of the built environment and how to make cities healthier for its residents," he shares.

"A lot of companies are trying to prevent this climate crisis where we have climate refugees that can't live in certain areas because of ecological damage. But in the process, we don't want to create economic refugees from the gentrification of bringing all of these companies and higher-wage jobs into an area without providing folks the ability to benefit from those jobs and the positive externalities of that development," explains Pettitt.

The InnoGrid would plan to provide positive externalities in the form of energy subsidies and potentially even job training for people who want to work on the grid.

Power to the consumer

Much like the gamification in feel-good fitness trackers and e-learning tools, reward systems can inspire friendly competition and community engagement. InnoGrid's proposal seeks to challenge other major cities to build their own grids and compete with a gamified system.

The Innovation Corridor is currently undergoing major redevelopment, the first 16 acres of which are being developed by Rice Management Company and will be anchored by The Ion, which is opening soon. The timing of this redevelopment would allow a prospective project like InnoGrid to build in visual and interactive aspects that depict energy usage and carbon offsetting.

The microgrid's statistics would also engage Houstonians by sharing up-to-date data through dashboards, apps, and even billboards to track Houston's carbon footprint. Pettitt paints a picture of interactive sidewalk structures, leaderboards, and digital billboards in the public realm to showcase how energy is used day-to-day. The team hopes to build positive feedback cycles that encourage tenants and building owners to be more energy-efficient.

"If we're having an Innovation Corridor, an innovation district, I think the built environment should be innovative too," explains Pettitt.

The future of InnoGrid

Every innovation has to start somewhere. While InnoGrid is in its early stages, the team is working to establish partners and collaborators to make the project a reality.

Inspired by projects like the Brooklyn Microgrid, InnoGrid is in the process of pursuing partnerships with utilities and energy retailers to form a dynamic energy marketplace that pools local distributed energy resources. The team hopes to collaborate with microgrid experts from around the nation like Schneider Electric and SunPower. Other potential collaborators include The Ion, CenterPoint, Greentown Labs, and Rice Management Company.

Can Houston remain the energy capital of the world as it transitions to a net-zero energy future? The InnoGrid team wants to make that happen. The argument for a microgrid in Houston feels even more fitting when you look at the landscape.

"If we are going to create an innovative microgrid that also functions as a testbed for innovators and startups, [we] have proximity to some of the biggest utilities and power generation players right in that sector," explains Patel, who is also an inaugural member of Greentown Labs Houston.

"The microgrid itself is not novel. I think what makes it compelling is to situate that right here in the heart of the energy capital as we, again, reincarnate as the energy transition capital world," Patel continues.

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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.