Balancing renewable energy growth and grid resilience requires a multifaceted approach. Photo via Getty Images

The global energy sector is on an exhilarating trajectory, teeming with promising technologies and unprecedented opportunities for a sustainable future. Yet, we find ourselves grappling with the challenges of reliability and affordability. As both a researcher in the field of power electronics and a consumer with bills to pay, I find myself experiencing mixed feelings.

As a researcher, I am thrilled by the progress we have achieved, particularly in energy conversion. The exponential growth of renewable energy technologies in Texas and beyond, including wind turbines and solar PV systems, is cause for celebration. These innovations, coupled with supportive policies, have facilitated widespread deployment and the potential to significantly reduce greenhouse gas emissions, combat climate change, and create a brighter future for our children.

While renewable energy resources can play a crucial role in maintaining the supply-demand balance of the grid, as they did by performing very well during the recent 2023 Texas heat wave, their intermittent and unpredictable nature can also pose a significant challenge to the power system. Unlike traditional power plants that operate continuously, wind turbines and solar PV systems rely on weather conditions for optimal performance. Fluctuations in wind speed, cloud cover, and sunlight intensity can lead to imbalances between energy supply and demand. This imbalance will worsen as the anticipated influx of electric vehicles and their charging needs come into play.

The volatility of renewables contributes to price fluctuations in the electricity market, which not only affects consumers but also raises concerns about grid resilience during extreme weather events. My electricity bill increased by over 20 percent compared to last year, partly caused by inflation, but mainly due to higher operational costs in the Texas electricity market.

Texas witnessed firsthand the consequences of a not-so-resilient grid through the severe power outages experienced during the "Polar Vortex" in February 2021. These outages not only disrupted lives but also disproportionately impacted vulnerable populations. During that time, my wife was expecting our second child. Enduring two nights in our frigid home without electricity or a fireplace was an ordeal that we navigated relatively unscathed. But it made me think of those less fortunate. These circumstances underscore the importance of establishing a robust, dependable and affordable electrical power system.

Balancing renewable energy growth and grid resilience requires a multifaceted approach:

  1. Investment in Infrastructure and Storage: It is crucial to strengthen the grid and ensure a reliable power supply. Upgrading transmission and distribution systems, integrating advanced monitoring and control technologies, and enhancing grid interconnections are essential. The Texas Legislature established the Powering Texas Forward Act, also known as Senate Bill 2627, a taxpayer-funded loan program, to encourage investment. While excluding certain renewable energy facilities and electric energy storage, it recognizes the need for a reliable grid. Hydrogen fuel cell generation facilities could be a potential solution, providing clean and stable energy while remaining eligible for the loan program. Additionally, implementing large-scale energy storage systems utilizing batteries and hydrogen storage technologies can mitigate renewable energy volatility by storing excess energy until needed. The Texas energy industry's push for these advances is a significant step in the right direction.
  2. Diversification of Energy Sources: While renewables play a crucial role in decarbonization, a mix of renewable sources, natural gas, and other low-carbon resources is necessary for the foreseeable future. Implementing carbon capture, utilization, and storage (CCUS) technologies across industries can mitigate associated climate impacts. The failure of Senate Bill 624, which would have had significant repercussions for wind and solar facilities, indicates that Texas legislators are genuinely concerned about clean, alternative sources of energy. However, a lot more needs to be done, including coordinated actions between federal, state, and international governments, to address the urgent issue of climate change. Texas can leverage its hydrocarbon/energy expertise to produce economical green and blue hydrogen, advanced fuel cells and hydrogen-based internal combustion engine technologies, enabling a smoother energy transition in terms of usage and jobs.
  3. Educating the General Public: It is critical to help people understand the necessity of modernizing our energy infrastructure; the benefits and opportunities it brings and the transformations we can expect. Institutions like the University of Houston play a crucial role in advancing clean energy technologies and educating the future energy workforce. The establishment of the Texas University Fund (TUF), with a budget of over $3 billion, through a constitutional amendment in November 2023, will be a pivotal step toward this goal.

When addressing the energy transformation and grid resilience dilemma, the real-life impact on human beings must be of prime importance. Our leaders should focus on a balanced approach considering grid infrastructure investment, diversification of energy sources, energy storage solutions, and public education. By adopting this multifaceted strategy, we can ensure a reliable, resilient, and affordable energy future.

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Harish Krishnamoorthy is an assistant professor of electrical and computer engineering and associate director of the Power Electronics, Microgrids and Subsea Electric Systems Center (PEMSEC) at the University of Houston.

Companies like ExxonMobil, NRG, and Shell play an important role in helping the world transition to renewable energy sources. Photo via htxenergytransition.org

3 Houston companies leading the way towards a low-carbon future

the view from heti

As the world population makes a jump towards more than 9 billion people by 2050, the race to net-zero is more important than ever. An increase in population means an increase in the demand for energy. With everything from greenhouse gases, pollution, carbon and nitrogen deposition putting a strain on planet Earth, community and business leaders are making commitments to advance the energy transition.

Companies like ExxonMobil, NRG, and Shell play an important role in helping the world transition to renewable energy sources. Here are three ways that these energy companies are working towards an energy abundant, low-carbon future.

NRG Energy

Headquarted in Houston, NRG Energy is the leading integrated power company in the U.S. In 2022, NRG introduced a new Sustainability and Resiliency Impact Study as part of Harris County’s Climate Action Plan to reduce the city’s carbon emissions by 40% by 2030. The initiative includes $34 million in park upgrades and is expected to save $54 million.

That same year, Evolve Houston, a nonprofit working to accelerate electric vehicle adoption within the Greater Houston area, launched an e-mobility microgrant initiative funded by Evolve Corporate Catalysts, General Motors and bp. With five founding members, among them being NRG Energy and Shell, the goal of the initiative is to improve regional air quality and reduce greenhouse gas emissions in the Greater Houston area.

At the top of 2023, Reliant Energy and NRG launched the Simple Solar Sell Back electricity plan for Texans aimed at providing solar panels to local homes for lower electricity bills.

Shell

On a mission to improve their own operations, Shell is addressing energy efficiency over time and capturing or offsetting unavoidable greenhouse gas emissions. Headquartered in London. Shell is on a mission to become a net-zero emissions energy business by 2050. In 2022, the British multinational company invested $6 million to create the Prairie View A&M Shell Nature-Based Solutions Research Program, funded through the company’s Projects & Technology organization dedicated to funding research to develop new technology solutions.

In March of 2022, Shell gifted the University of Houston $10 million to bolster the institution’s efforts to establish the Energy Transition Institute which focuses on the production and use of reliable, affordable and cleaner energy for all. The company also launched the residential power brand Shell Energy offering 100% renewable electricity plans.

ExxonMobil

ExxonMobil is one of the world’s largest publicly traded international oil and gas companies. In 2021, the multinational oil and gas corporation pledged to invest more than $15 million in solutions to lower greenhouse gas emissions initiatives across six years. As a part of their approach to improve air quality, ExxonMobil is working to:

  • Understand the composition and extent of our emissions
  • Meet or exceed environmental regulations
  • Reduce air emissions to minimize potential impacts on local communities
  • Monitor the science and health standards related to air quality

Throughout the years, plastics have become an essential component of products, packaging, construction, transportation, electronics and more. While plastics are durable, lightweight and cheap, they also emit 3.4% of global greenhouse gas emissions. Late last year, the major corporation announced the successful startup of one of the largest advanced recycling facilities in North America. Located in Baytown, Texas, the recycling facility uses proprietary technology to break down raw materials for new products and is expected to have nearly 1 billion pounds of annual advanced recycling capacity by the end of 2026.

According to their 2023 Advancing Climate Action Progress Report released early this year, the corporation plans to reduce greenhouse gas emissions through 2030.

From resolving power grid issues to developing renewable energy technologies, Houston energy companies are powering today to empower the future.

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This article originally ran on the Greater Houston Partnership's Houston Energy Transition Initiative blog. HETI exists to support Houston's future as an energy leader. For more information about the Houston Energy Transition Initiative, EnergyCapitalHTX's presenting sponsor, visit htxenergytransition.org.

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ExxonMobil expands Gulf Coast CCS business with Louisiana deal

carbon contract

Spring-based energy powerhouse ExxonMobil has picked up another project in the carbon capture and storage (CCS) market.

Natural gas pipeline operator Williams Cos. has tapped ExxonMobil to transport and store up to one metric ton per year of CO2 from Williams’ natural gas collection and processing plant in southwest Louisiana’s Haynesville Shale.

Williams will transport natural gas via its Louisiana Energy Gateway pipeline, then process the natural gas and deliver it to the Gulf Coast for export as liquefied natural gas (LNG). The LNG will be used in power generation, residential and commercial heating, and industrial processes.

Williams recently agreed to acquire Momentum Midstream for up to $5.5 billion to expand Williams’ LNG presence in the Haynesville Shale. Haynesville is the country’s third-largest producer of natural gas.

Once the deal closes, Williams will own a $1.5 billion project in southwest Louisiana that will expand capacity of the Transco natural gas distribution system. The system serves power and LNG-export customers. Williams will also gain over 4,000 miles of pipeline and more than one million acres.

While Williams is based in Tulsa, Oklahoma, it has a significant presence in Houston. Last month, Green Street’s Real Estate Alert reported Williams bought the 64-story, 1.4 million-square-foot Williams Tower south of The Galleria from Invesco Real Estate for more than $300 million. The company will occupy about 360,000 square feet in the skyscraper for its Houston hub.

Williams employs about 800 people in Bayou City, including roughly 700 who work at Williams Tower, and plans to hire another 100 by the end of this year.

The Williams deal is ExxonMobil’s seventh CCS contract. ExxonMobil’s CCS portfolio supports LNG, lower-carbon-intensity steel, ammonia, natural gas processing, industrial gases and methanol.

ExxonMobil has established a “carbon superhighway” along the Gulf Coast to fuel its CCS business. The company owns and operates a more than 1,300-mile CO2 pipeline system, the largest in the U.S.

“Carbon capture is becoming an increasingly important part of industrial operations, but capture alone doesn’t solve the problem of high emissions,” says ExxonMobil. “What matters next is how CO2 is transported, used, and stored.”

ExxonMobil’s CCS initiatives are aimed at capturing a chunk of the rapidly growing CCS market in the U.S. Straits Research forecasts the market will grow from $5.66 billion this year to $13.56 billion by 2034.

“It’s not every day you get to witness the birth of a new American industry, but that’s exactly what’s happening right now at the U.S. Gulf Coast,” Dominic Genetti, senior vice president of CCS at ExxonMobil, wrote in an article published last year on the company’s website.

Fervo Energy, Mercury Fund leaders named first experts in residence for TEX-E

energy mentors

Two leading companies in Houston's clean energy scene have been named the Texas Exchange for Energy & Climate Entrepreneurship's first experts in residence.

TEX-E announced this month that Houston-based geothermal unicorn Fervo Energy and venture capital firm Mercury Fund have joined the nonprofit's new Expert-in-Residence partnership. The program aims to connect TEX-E Fellows with "the people and organizations shaping the future of energy and entrepreneurship."

The 2026 TEX-E Fellows were named in June and include 67 students from six Texas universities and the Massachusetts Institute of Technology. Nineteen are from Houston universities. See the full list here.

Through the Expert-in-Residence program, fellows will be able to network and work with:

"More than anything, students need the determination and creativity to step outside of their comfort zones and tackle problems that lack clear answers. At Fervo, we've consistently bet on young people who lack traditional 'hard skills' but are willing to embrace uncertainty and learn on the job. That open-mindedness will take students far," Jewett said in a prepared statement. Fervo named Jewett as COO in June.

TEX-E was founded in 2022 through partnerships with MIT Martin Trust Center for Entrepreneurship and Greentown Labs. It works with university students from six schools: Rice University, University of Houston, Prairie View A&M University, The University of Texas at Austin, Texas A&M University and MIT.

The organization named Houston venture capital and innovation leader Sandy Guitar as its new executive director last year. Guitar previously served as general partner and managing director at Houston-based VC firm HX Venture Fund and is co-founder of Weathergage Capital.

TEX-E is known for its student track within the Energy Venture Day and Pitch Competition at CERAWeek. It awarded $50,000 to student teams from the University of Texas and Rice University. Read more here.

BP to sell Houston’s Archaea Energy after $4.1 billion bet on biogas

RNG exit

Oil and gas conglomerate BP is unloading its Houston-based U.S. renewable natural gas business just four years after buying it.

The British company announced the planned sale of Archaea during its most recent earnings call but offered few details.

On the call, BP’s new CEO, Meg O’Neill, said her company had put Archaea on the market and already had attracted interest from potential buyers. BP acquired Houston-based Archaea Energy, the country’s largest producer of renewable natural gas (RNG), in 2022 for about $4.1 billion.

BP, whose North American headquarters is in Houston, is streamlining its portfolio. As such, O’Neill said Archaea represents a “capital intense” approach to biogas instead of the “capital light” approach BP now favors.

“If there’s somebody who sees an opportunity to create additional value, who will invest in that business, who will build on the foundation, because our team has made really good progress in improving the profitability of that business, then that will be a good outcome,” O’Neill told Wall Street analysts.

The proposed sale of Archaea is part of BP’s effort to sell about $20 billion in assets by the end of next year.

Archaea captures biogas, a natural byproduct of waste decomposition at landfills and dairy farms, and converts it into electricity or RNG. This process leads to cleaner air, less odor, and more sustainable energy than traditional fossil fuels.

Archaea was slated to be a cornerstone of BP’s plan to boost its biogas supply by roughly 600 percent to the equivalent of about 70,000 barrels of oil per day.

Bioenergy had been identified as one of bp’s five pillars of its multibillion-dollar energy transition initiative.

Another pillar: EV charging. Last month, BP agreed to sell its EV charging business in Austria to Switzerland’s Volenergy, along with 250 BP-branded stores and a fleet of business vehicles.

“By concentrating our capital on the assets and markets where BP can be most competitive and best serve customers, we are strengthening our balance sheet and creating a stronger downstream portfolio,” Richard Harding, interim executive vice president of downstream at BP, said of the Volenergy deal.