The improvements are expected to reduce emissions by 241,000 metric tons a year and save over $54 million by 2043. Photo courtesy of NRG

A Houston organization has announced a major energy efficiency and sustainability project that, in 20 years, will end up paying for itself with the savings alone.

The project is a collaboration between Wisconsin-based Johnson Controls (NYSE: JCI), Harris County Sports & Convention Corporation (HCSCC), NRG Park, and Harris County. The 20-year savings of the improvements are estimated to generate more than $54 million.

"We remain committed to maintaining NRG Park's distinct position as a part of the fabric of our community and a landmark for visitors globally," Ryan Walsh, CEO and executive director of HCSCC and NRG Park, says in a news release. "These enhancements allow us to maintain our reputation for excellence and continue to deliver the best fan experiences, while exploring innovative and financially responsible approaches to sustainability."

The project, according to the news release, is expected to reduce carbon dioxide emissions by over 241,000 metric tons a year. The plan includes: upgrades to HVAC equipment, building automation systems, water conservation, life safety systems and lighting improvements, and the high-efficiency chiller system.

The teams from Johnson Controls and NRG celebrated the partnership earlier this summer. Photo courtesy of Johnson Controls

Additionally, the park will integrate a system from Johnson Controls — OpenBlue Central Utility Plant — and the company will continue to measure and track results through an ongoing service agreement.

"Our partnership with Harris County and HCSCC's team to guide the enhancement initiative at NRG Park is paving the way for more sustainable practices across the sports and entertainment sector," Julie Brandt, president of Building Solutions North America at Johnson Controls, says in a statement. "We look forward to seeing how this project will inspire other industry leaders and drive smart savings and significant emissions reduction, not only in Harris County but on a national scale."

NRG Park, comprised of NRG Center, NRG Stadium and NRG Arena, is home to the annual 20-day Houston Livestock Show and Rodeo and the NFL Houston Texans. The 350-acre complex will also host the College Football Playoff Championship, the FIFA World Cup, and more than 500 other events this year.

"NRG Park is a premier destination that welcomes more than 5.5 million people annually," says Rodney Ellis, Harris County Commissioner for Precinct 1, in the release. "These enhancements will create a more enjoyable and resilient environment for people traveling from near and far to attend the multitude of events hosted there."

It's not the first time NRG has invested in energy efficiency. In 2014, NRG Stadium became the first professional football stadium in the country with LED lights, Elizabeth Killinger, executive vice president of NRG Retail, said at the time. NRG also became the first professional sports stadium in Texas to install solar panels. At the time, the organization also announced electric vehicle charging stations.

Earlier this year, the Houston Texans announced a sustainability project of their own. In partnership with 1PointFive, the Texans’ Preferred Carbon Removal Partner, the team launched the Touchdown for Trees program the Touchdown for Trees program to recapture carbon emissions. For every touchdown scored by the Texans in the 2022, 2023, and 2024 seasons, the team pledges to plant 1.5 trees in the greater Houston area.

Looks like green really is the new black in a city that’s known for being all blue. Photo courtesy of Zach Tarrant, HoustonTexans.com

Another Houston sports team commits to fighting climate change

EVERYDAY ENERGY

The Houston Texans rocked the football world in early May with their historic back-to-back first-round all-star offense/defense NFL draft picks, but that’s not the only groundbreaking news they had planned this month. In partnership with 1PointFive, the Texans’ Preferred Carbon Removal Partner, the team announced the Touchdown for Trees program to recapture carbon emissions – and the hearts of fans.

“As part of our partnership with 1PointFive, we kicked off our Touchdown for Trees initiative last week at Hermann Park Conservancy,” Houston Texans Senior Vice President of Partnerships Jerry Angel tells EnergyCapitalHTX. “We’re looking forward to continuing to work together to make a difference across our community during the 2023 Season.”

For every touchdown scored by the Texans in the 2022, 2023, and 2024 seasons, the team pledges to plant 1.5 trees in the greater Houston area. To kick off the initiative, Houston Texans staff and cheerleaders gathered in Hermann Park Conservancy on May 11 to plant 25 inaugural trees. The group also removed invasive species from the area to eliminate competition for the newly planted trees and restore native habitat conditions.

Planting trees to fight climate change has gathered significant momentum in recent years, as each individual tree can offset approximately 22 pounds of carbon emissions per year over its first 20 years of life, according to conservative calculations from OneTreePlanted.org. The One Trillion Tree Initiative, announced at the 2020 World Economic Forum in January 2023, could effectively reduce carbon emissions by 20% year-over-year for the next two decades through reforestation efforts.

Like other carbon capture solutions, reforestation must be pursued with proper planning and care, so as not to waste time nor resources. But many tout reforestation as the simplest way to reduce carbon emissions and meet all 17 of the United Nations’ Sustainable Development Goals simultaneously.

With this commitment to reforestation, the Houston Texans join the Astros, Rockets, Dash, and Dynamo in a collective effort to fight climate change. Earlier this spring, the Houston Astros partnered with 1PointFive in an agreement to purchase carbon dioxide removal credits from the new Direct Air Capture facility near Odessa in Ector County, TX.

Like the Texans, the soccer teams of Houston are donating trees for each victory achieved this calendar year. In partnership with Shell Energy, the Dynamo and Dash have already committed to 1,750 new trees from their 5 aggregate wins this spring.

Additionally, each of the homes of these Houston teams follows in the footsteps of Houston’s original green arena, the Toyota Center. One of 10 Green NBA arenas to earn LEED certification, the home of the Houston Rockets boasts energy efficient lighting, electric submeters, and an abundance of trees and vegetation in an urban setting to reduce greenhouse gases by over 3,000 tons annually.

Shell Energy is giving the home of the Dynamo and Dash a decarbonization facelift this year, with energy efficient LED-lighting throughout, installation of EV charging stations, and the use of on-site renewable energy generation systems.

Similar efforts continue to roll out at Minute Maid Park and NRG Stadium, including food sustainability programs, dedicated recycling for aluminum, plastic, and cardboard, and complete conversion to more efficient lighting solutions on the field, in the bathrooms, and even out in the parking lots.

Whether rooting for the home team or cheering on the visitors, fans that attend Houston events at these stadiums and arenas benefit from the knowledge and experience of local talent stewarding such energy transition initiatives. Maybe it’s time to bring back the historic chant of the Oilers, with a modern twist, “go blue–and green!”

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6+ must-attend Houston energy transition events for May 2026

Mark Your Calendars

Editor's note: May is starting off strong with two of the month's largest events beginning on Monday, May 4: Enverus Evolve Conference and OTC. Mark your calendars and begin registering now.

May 4-6, 2026 — Enverus Evolve Conference

Staying ahead of the curve in the energy sector is critical. This conference is designed to equip energy leaders with foresight in the energy market, providing cutting-edge technological know-how, sessions and networking opportunities industry leaders, and offering practical guidance on how to apply technology to solve big problems.

This event begins May 4 at Marriott Marquis, Downtown Houston. Register here.

May 4-7, 2026 — OTC 2026

The world’s largest offshore energy technology event returns to Houston beginning May 4. Dr. Mohamed Irfaan Ali, president of the Co-operative Republic of Guyana, will officially open the 2026 Offshore Technology Conference, delivering the Opening Address on May 4. This year's event will be cover the theme of "Steering Offshore Energy Innovation into the Future," emphasizes the pivotal role oil and gas, along with other emerging offshore energy sources, will play in shaping a sustainable and energy-secure future.

This event begins May 4 NRG Park. Register here.

May 14, 2026 — Gulf Coast ASSP Energy Corridor Section Meeting

At this lunchtime session, Chris Garza will speak on “Demystifying Regulatory Frameworks.” This session provides a comprehensive overview of key regulatory requirements concerning air quality, water discharge, and land management. Attendees will gain actionable insights into permits, reporting obligations, pollution prevention planning, and hazardous waste management. This session demystifies regulatory frameworks and empowers businesses to meet their legal responsibilities while promoting a culture of environmental stewardship. Attendees are welcome to stay for lunch and networking after the session.

This event takes place May 14 at 960 Memorial City Way. Register here.

May 16, 2026 — Energy Valuation Conference

ASA Houston's 16th annual EVC brings together energy valuation professionals and industry thought leaders to present timely educational valuation topics, with a focus on valuation impacts in the transition of power generation from fossil fuel to non-carbon, renewables, sustainable energy

This event takes place May 16 at The Briar Club, and there will be a live webcast. Register here.

May 18-19, 2026 — Geothermal Transition Summit North America

This two-day summit serves as the meeting point for the geothermal and oil and gas industries and will focus on geothermal energy, including scaling plants and navigating state regulations. The event promises 40 expert speakers, 15 exhibition spaces, and networking opportunities with 250 industry decision makers.

This event begins May 18 at Norris Conference Center. Register here.

May 20-21, 2026 — ESF North America

ESF North America returns for its 5th edition, under the theme of “innovation and adaptation.” Attendees will explore how technology, innovation, and collaboration can drive a resilient, competitive refining and chemicals industry.

This event begins May 20 at The Westin Oaks Houston at the Galleria. Register here.

Houston scientists unveil faster, low-energy method to recycle lithium-ion batteries

Battery breakthrough

Rice University researchers have uncovered a more energy-efficient and faster way to recycle critical minerals from used lithium-ion batteries.

Traditional methods rely on high heat, long processing times and harsh chemicals to recover a small fraction of critical materials from batteries used in everything from smartphones to electric vehicles. However, the team from Rice's Department of Materials Science and Nanoengineering developed a process that uses a water-based solution containing amino chlorides to extract more metals in less time

The team published the findings in a recent edition of the scientific journal Small.

Simon King, a sophomore studying chemical and biomolecular engineering who completed this work as a summer research fellow at the Rice Advanced Materials Institute, served as first author of the study. He worked with corresponding authors Pulickel Ajayan, the Benjamin M. and Mary Greenwood Anderson Professor of Engineering, and Sohini Bhattacharyya, a research scientist in Ajayan’s lab.

By using a hydroxylammonium chloride (HACI) solution, the team achieved roughly 65 percent extraction of key battery metals in just one minute at room temperature, according to the study. The efficiencies grew to roughly 75 percent for several metals under longer processing times.

“We were surprised by just how fast the reaction occurs, especially without the involvement of high temperatures,” King said in a news release. “Within the first minute, we’re already seeing the majority of the metal extraction take place.”

By not requiring high temperatures or long reaction times, Rice predicts the process could have a major impact on cost and the environmental impact of lithium battery recycling. Additionally, the water-based HACI solution makes waste handling easier and lowers certain environmental risks.

In addition to extracting the materials, the team went on to demonstrate that the recovered metals could be recycled and reprocessed into new battery materials.

“A big advantage of this system is that it works under relatively mild conditions,” Ajayan added in the release. “That opens the door to more sustainable and scalable recycling technologies.”