Solar Slice Founder Nathan Childress says his new venture offers a fulfilling way to encourage and promote solar energy and a greener planet. Photo by Pixabay

A Houston nuclear engineer and entrepreneur wants consumers to capture their own ray of sunlight to brighten the prospect of making clean energy a bigger part of the power grid.

Solar Slice Founder Nathan Childress says his new venture offers a fulfilling way to encourage and promote solar energy and a greener planet. An experienced entrepreneur, Childress also serves as founder and CEO of technology software company Macorva.

Although trained in nuclear power plant design, solar power drew his interest as a cheaper and more accessible alternative, and Childress tells InnovationMap that he thinks that the transition to cleaner energy, in Texas especially, needs to step up.

With energy demand skyrocketing, and the push toward renewable solutions, solar seems like a safe bet for Childress, a former competitive high-stakes poker player. Childress cites a recent Yale University study that says 63 percent of Americans “feel a personal responsibility to help reduce global warming.”

But some studies show that 80 to 90 percent of the money invested into fighting climate change “aren’t going to things that people actually consider helpful,” he says.

“They’re more just projects that sound good, that are not actually taking any action,” says Childress, who has called Houston home for 25 years. He received his doctorate in medical physics at M.D. Anderson Cancer Center, where he worked on software that provided radiation therapy for patients.

The initial Kickstarter fundraising round, which will be launched soon, will finance the construction of one utility-scale solar farm, on about five to 10 acres, which would produce about 1 megawatt, or 1,000 kilowatts, of clean energy. The plant would make enough energy to power about 200 average homes.

Childress says interest has been strong, with several thousand signed up on the Kickstarter launch list. Some who are signed up expressed interest in a subscription, he said, and that may be offered later. Initially, though, for a one-time purchase of $95, a Solar Slice client can purchase one virtual 50W slice of solar power, produced by the farm. Over its lifetime, Childress says, that one purchase can offset three tons of carbon dioxide.

The app tracks carbon offsetting, and energy production for the slice, showing a client “exactly how much I have helped the climate, here’s exactly how (many) emissions I have prevented from putting in the atmosphere,” he says.

The energy produced by five slices can offset the average American’s carbon footprint for a year, and the power generated by the solar farm will be sold to the electric grid. As clients purchase more slices, they can earn eco-credits to donate to other climate-friendly partners, to plant trees or create pollinator habitats.

While Solar Slice is a for-profit venture, contributors won’t get rich or even make money from their purchase. Rather, it provides validation.

“Our focus is maximizing the real world impact, not for financial gain. This is not something people sign up (for) to make money. We’re really clear about that,” Childress says. “I want to show that it’s possible to have a for-profit company that is sustainable, that does good work.

“And hopefully, we can be part of the spirit…for a bigger movement, and for consumers and business, especially, to do things that matter.”

Solar Slice Founder Nathan Childress says his new venture offers a fulfilling way to encourage and promote solar energy and a greener planet. Photo courtesy

The largest U.S. solar plants are in Nevada and California, and those states are sites under consideration, but Childress says Texas is the most likely home for the initial project. The ten largest utility-scale solar plants in Texas by capacity are all in far west or central parts of the state, according to the state comptroller’s office.

Childress has a team of four, who are handling the marketing, plant design and site scouting, and hopes to hire five to 10 more, depending on response and growth. He says the Solar Slice consumer can directly connect in real time to the contribution that their purchase will make toward a green energy future.

“That was our inspiration..let’s start something that is really making a difference..and making really clear to the individuals what’s being done,” he says.

Solar energy has become a growing source of power for Texas, comprising about 6 percent of the state’s energy generation, as of 2022, the comptroller’s office says.

The state ranks first in projected growth of solar energy over the next five years, with more than 9,500 operating solar plants, and many thousands more announced, according to the state Public Utility Commission.

“We would absolutely love to make this into something where we are building plants around the nation, around the world,” Childress he says.

However, resistance to alternative energy projects like solar and wind, especially on a large scale, remains in some quarters.

Obtaining site permits for swaths of land can be also a challenge. For example, a recent survey by Berkeley Lab of 123 professionals from 62 unique, large-scale wind and solar energy facilities showed that about one-third of wind and solar siting applications in the past five years were canceled.

Half of the projects experienced delays of six months or longer. And according to the survey, developers expect the trend to continue, and become more expensive to address.

However, another Berkeley Lab survey of residents who live within three miles of a solar power plant showed that most view the plant positively. The larger the plant, the more negative the response in the survey. The smaller the farm, the more positive the reactions.

Childress says many of the common objections to utility-scale solar farms are misguided, and incorrect. For example, the concern that they would take over available farmland or take up too much space.

He says that even if the entire U.S. power grid relied solely on solar power, the plants would occupy not even a half percent of available land, which is about one percent farmland.

The Rodeo Renewable Energy Complex will expand commercial-scale production to “position the company as a leader in renewable fuels." Photo via phillips66.com

Phillips 66 reports full capacity milestone of renewable energy facility

up and running

Houston-based Phillips 66 announced the full conversion of a California renewable energy facility.

The Rodeo Renewable Energy Complex will expand commercial-scale production to “position the company as a leader in renewable fuels,” according to a news release.

The facility, located 200 miles south of San Francisco, California, increased rates to approximately 50,000 barrels per day (or 800 million gallons per year), which reached the company’s goal of achieving full capacity by the second quarter of 2024. This also aligns with its commitment to energy transition and provide customers with lower-carbon solutions.

The Rodeo complex has new pre-treatment units that process lower carbon intensity feedstocks like cooking oil, fats, greases and vegetable oil. It began producing approximately 30,000 barrels per day of renewable fuel at the end of the first quarter of 2024. Rodeo Renewed is designed to produce renewable diesel and sustainable aviation fuel, and was started in 2020, and mostly serves the West Coast and California areas.

“Phillips 66 has reached another important milestone, which is a testament to our employees’ dedication to achieving our company’s strategic priorities,” executive vice president of Refining Rich Harbison said in a news release. “The facility running at full capacity supports the growing demand for renewable fuels, lowers our carbon footprint and creates long-term value for our shareholders.”

A Houston company has started construction on a Waco-area solar farm. Photo courtesy of INEOS

Houston company breaks ground on North Texas solar project

coming soon

A Houston-area company has broken ground on a new 310-megawatt solar project located in Bosque County, Texas.

League City-based INEOS Olefins & Polymers and Florida-based NextEra Energy Resources announced the groundbreaking on INEOS Hickerson Solar, which will reportedly save over 310,000 tons of CO2 every year.

“INEOS O&P USA is committed to leading the petrochemical community in adopting renewable energy solutions,” says CEO Mike Nagle in a news release. “This solar project is a crucial step in our global efforts to reduce the carbon footprint of INEOS businesses.”

The INEOS Hickerson Solar project will be constructed, owned and operated by a subsidiary of NextEra Energy Resources, and the output will aim to cover the net purchased electricity load for all 14 of INEOS O&P USA’s manufacturing, fractionation and storage facilities. Commercial operation is expected by December 2025.

The project is expected to produce 730,000 megawatt-hours of clean energy annually, which is the equivalent to the annual electricity use of over 68,000 homes. INEOS hopes this will significantly contribute to reducing greenhouse gas emissions by approximately 310,000 tons per year.

This follows the recently signed renewable power purchase agreement with NextEra Energy Resources, which is the world's largest generator of renewable energy from wind and sun.

This Earth Week, let's consider the benefits of home charging for electric vehicles. Photo via Getty Images

Expert: 5 ways residential charging enhances the environmental benefits of EVs

guest column

Electric vehicles are already considered as an environmentally conscientious alternative to traditional internal combustion engine vehicles, thanks to their zero tailpipe emissions. However, the environmental benefits of EVs can be further enhanced by implementing a home-base charging routine.

This is important not only for individuals looking to cut their household’s carbon footprint, but also for corporations that operate EV fleets and are looking for additional cost and environmental savings as part of their larger sustainability initiatives. What makes home charging the most eco-conscious option?

1. Increased use of renewable energy

More than 4 million homes in the United States support rooftop solar panels that provide renewable energy back to the property or back to the local grid. When EV owners install solar panels or other renewable energy systems at their homes, they can charge their vehicles using this clean energy, effectively reducing the carbon footprint associated with their EV use to nearly zero. This direct use of renewables circumvents the inefficiencies and emissions associated with the broader energy grid which, depending on the location, may still rely on fossil fuels to a significant extent. This synergy between EVs and clean local energy production is exemplified by Tesla’s solar roof program, which promotes the adoption of clean home-based energy production as part of the holistic EV ownership experience offered through their app.

2. Optimizing charging times for lower emissions

Home charging allows for more flexible and strategic charging schedules. EV owners can often take advantage of off-peak electricity rates and lower carbon intensity periods by charging their vehicles overnight or when renewable energy production (such as wind or solar power) is at its peak. This not only leads to cost savings for the consumer, but also contributes to a balanced demand on the electric grid, reducing the need for high-carbon emergency power sources that are sometimes activated during peak demand times. Apps like WhenToPlugIn use a carbon intensity forecasting tool to help consumers pick the best times to charge.

3. Reducing dependency on public charging infrastructure

Public charging stations are crucial for long-distance EV travel. For everyday use, the current public charging landscape is trailing the demand curve. The good news is that the majority of EV drivers can rely almost solely on home charging. This practice ensures public charging spots remain open for those who, due to circumstances such as residing in multi-unit dwellings without charging facilities, cannot charge at home. Consequently, this accessibility supports wider adoption of EVs, leading to a more substantial reduction in overall emissions.

4. Avoiding unnecessary travel to public charging stations

The average driver has to detour 2 miles to refill their gas tank. For electric vehicles, finding an available public charger can add many more miles to a trip. Home charging ensures that EVs can start each day with a “full tank” — which, with new EVs, means hundreds of miles of range before needing to plug in again. This reduction in driven miles not only saves time but also decreases the energy consumption and emissions associated with traveling to and from charging stations unnecessarily. By charging at home, EV owners can ensure their vehicles are ready to go without extra trips, further cutting down on the vehicle's overall environmental impact.

5. Enhancing battery longevity

Charging at home typically involves slower charging speeds compared to rapid chargers found in public stations. These slower, more controlled charging rates are less taxing on an EV's battery, contributing to longer battery life and better overall efficiency. Longer battery lifespans mean fewer replacements over the vehicle's life, significantly reducing the environmental impact associated with battery production and disposal. This not only has clear environmental benefits but also economic ones for the vehicle owner.

Conclusion

The environmental benefits of electric vehicles are well-documented, but by incorporating home charging, these benefits are amplified significantly. Through the increased use of renewable energy, optimizing charging times to utilize green power, and reducing reliance on public charging infrastructure, EV owners can further reduce their environmental footprint. As technology advances and the energy grid becomes cleaner, the potential for home charging to contribute to a more sustainable future only grows, reinforcing the role of electric vehicles in the transition to greener transportation options.

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Kate L. Harrison is the co-founder and head of marketing at MoveEV, an AI-backed EV transition company that helps organizations convert fleet and employee-owned gas vehicles to electric, and reimburse for charging at home.

Houston has its stamp on the project in multiple ways with Gulf LNG Tugs boasting two Houston area companies in Bay-Houston Management LLC and Suderman & Young Towing Company. Photo via glenfarneenergytransition.com

Houston companies combine for massive tugboat and export project

plugging into LNG

Texas LNG, a four million tonnes per annum liquefied natural gas export terminal to be constructed in the Port of Brownsville, and a subsidiary of Glenfarne Energy Transition, announced the selection of its new partner.

Gulf LNG Tugs of Texas will operate, build, and deliver tugboats under an agreement to assist LNG carriers arriving at the facility. Tugs of Texas is part of a consortium of Suderman & Young Towing Co., Bay-Houston Towing, and Moran Towing Corp., and the tugboats will be among the “most modern, low-emissions tugboats available to serve a facility of Texas LNG’s size” according to the company. This will also align with Texas LNG’s "Green by Design" approach, and the deal is a long-term agreement.

The projected port for Texas LNG is considered to be an area with consistent operating temperatures, and reliable maritime operations with lower probability of impact from inclement weather like storms and damage associated with them. Globally, Texas LNG is also designed to be one of the lowest-emitting export terminals. Texas LNG is developing the project site on the north shore of the Port of Brownsville. This area offers access to a deep-water ship channel in close proximity to the Gulf of Mexico and the Panama Canal.

“Gulf LNG Tugs is excited to be providing marine services in a long-term partnership with Texas LNG,” the companies say in a joint statement. “We are proud to be the exclusive tug operator for LNG vessels to yet another successful LNG project in the Port of Brownsville and look forward to expanding our operations in the port and our presence in the Rio Grande Valley community."

Houston has its stamp on the project in multiple ways with Gulf LNG Tugs boasting two Houston area companies in Bay-Houston Management LLC and Suderman & Young Towing Company.

New York and Houston-based Glenfarne works to provide solutions to lower the world’s carbon footprint, which aligns with the common goals of all the companies involved.

“The Texas LNG team undertook a comprehensive process to identify a marine service provider that not only matches our commitment to environmental stewardship, but also provides our customers with reliable, cost-effective marine services,” Brendan Duval, CEO and Founder of Glenfarne Energy Transition said in a news release. “We are pleased to have Gulf LNG Tugs on board as a partner and look forward to the jobs and local content they will bring to both Texas LNG and the local Rio Grande Valley community."

Texas LNG recently announced that it signed a Heads of Agreement with EQT Corporation for natural gas liquefaction services for 0.5 MTPA of LNG, in addition to partnerships with Baker Hughes and ABB to help develop the terminal. This represents equipment selections for Texas LNG to date that is worth half a billion dollars’ worth.

Construction is slated to begin this year after the financing of the project is finalized.

SCS Technologies named Jane Stricker, executive director of HETI, as the executive chairperson of its inaugural urban reforestation event next month. Photo via GHP

Houston energy transition leader to spearhead urban reforestation initiative

seeing green

One of Houston's foremost energy transition leaders has been named to a community urban reforestation project from a Texas energy company.

Big Spring, Texas-based SCS Technologies named Jane Stricker, executive director of the Greater Houston Partnership’s Houston Energy Transition Initiative, as the executive chairperson of its inaugural urban reforestation event next month.

SCS, a provider of liquid hydrocarbon, water, and CO2 measurement systems, is holding the event on March 23 at the Galena Park Resource and Training Center in Galena Park, Texas, in collaboration with One Tree Planted and Trees for Houston.

“We are honored that Jane Stricker is spearheading our Galena Park tree-planting effort. As a revered leader in the energy transformation movement, Jane's impact is profound across Houston’s diverse energy sector and internationally,” Cody Johnson, CEO of SCS Technologies, says in a news release. “Jane's stewardship of this event underscores the vital importance of fostering partnerships between the community and industry to improve local environments and make strides in reducing our collective carbon footprint.

"Our donation of trees to the Galena Park area—a community just east of Houston materially affected by emissions from surrounding petrochemical plants—is one step towards environmental restoration and tree equity," he continues.

The goal for the event is to give out 1,125 shade, flowering, and fruit trees to community members, who will be asked to plant at their homes and businesses.

“The vast undertaking of the energy transformation requires more than just technological innovation; it demands a shared commitment from all sectors to enact real change. SCS Technologies is leading by example, demonstrating how innovative solutions and community-focused actions can drive meaningful change,” Stricker adds in the release. “As the executive chairperson, I am proud to be part of the Galena Park tree distribution event, an initiative that illustrates our shared dedication to environmental sustainability and community enrichment. The impact of these trees extends beyond carbon sequestration, bringing beauty and much-needed shade from our hot summer sun to the Galena Park community.”

The initiative is a part of SCS's goal to plant 100,000 trees in "economically challenged urban neighborhoods" across Texas, Oklahoma, and Louisiana by 2030. The company, per its environmental initiatives, is also participating in SME Net Zero by 2050.

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Houston venture firm invests in Virginia fusion power plant company in collaboration with TAMU

fusion funding

Houston-based climate tech venture firm Ecosphere Ventures has partnered with Virginia Venture Partners and Virginia Innovation Partnership Corporation’s venture capital program to invest in Virginia-based NearStar Fusion Inc., which develops fusion energy power plants.

NearStar aims to use its proprietary plasma railgun technology to safely and affordably power baseload electricity on and off the power grid through a Magnetized Target Impact Fusion (MTIF) approach, according to a news release from the company.

NearStar’s power plants are designed to retrofit traditional fossil fuel power plants and are expected to serve heavy industry, data centers and military installations.

“Our design is well-suited to retrofit coal-burning power plants and reuse existing infrastructure such as balance of plant and grid connectivity, but I’m also excited about leveraging the existing workforce because you won’t need PhDs in plasma physics to work in our power plant,” Amit Singh, CEO of NearStar Fusion, said in a news release.

NearStar will also conduct experiments at the Texas A&M Hypervelocity Impact Laboratory (HVIL) in Bryan, Texas, on prototype fuel targets and evolving fuel capsule design. The company plans to publish the results of the experiments along with a concept paper this year. NearStar will work with The University of Alabama in Huntsville (UAH) to develop computer performance models for target implosions.

NearStar’s MTIF approach will utilize deuterium, which is a common isotope of hydrogen found in water. The process does not use tritium, which NearStar believes will save customers money.

“While avoiding tritium in our power plant design reduces scientific gain of the fusion process, we believe the vastly reduced system complexity and cost savings of eliminating complicated supply chains, regulatory oversight, and breeding of tritium allows NearStar to operate power plants more profitably and serve more customers worldwide, ”Douglas Witherspoon, NearStar founder and chief scientist, said in a news release.

Houston’s Ecosphere Ventures invests in climate tech and sustainability innovations from pre-seed to late-seed stages in the U.S. Ecosphere also supports first-time entrepreneurs and technical founders.

Solar farms are booming and putting thousands of hungry sheep to work

Solar Power

On rural Texas farmland, beneath hundreds of rows of solar panels, a troop of stocky sheep rummage through pasture, casually bumping into one another as they remain committed to a single task: chewing grass.

The booming solar industry has found an unlikely mascot in sheep as large-scale solar farms crop up across the U.S. and in the plain fields of Texas. In Milam County, outside Austin, SB Energy operates the fifth-largest solar project in the country, capable of generating 900 megawatts of power across 4,000 acres.

How do they manage all that grass? With the help of about 3,000 sheep, which are better suited than lawnmowers to fit between small crevices and chew away rain or shine.

The proliferation of sheep on solar farms is part of a broader trend — solar grazing — that has exploded alongside the solar industry.

Agrivoltaics, a method using land for both solar energy production and agriculture, is on the rise with more than 60 solar grazing projects in the U.S., according to the National Renewable Energy Laboratory. The American Solar Grazing Association says 27 states engage in the practice.

"The industry tends to rely on gas-powered mowers, which kind of contradicts the purpose of renewables," SB Energy asset manager James Hawkins said.

A sunny opportunity
Putting the animals to work on solar fields also provides some help to the sheep and wool market, which has struggled in recent years. The inventory of sheep and lamb in Texas fell to 655,000 in January 2024, a 4% drop from the previous year, according to the most recent figures from the U.S. Department of Agriculture.

Because solar fields use sunny, flat land that is often ideal for livestock grazing, the power plants have been used in coordination with farmers rather than against them.

Sheepherder JR Howard accidentally found himself in the middle of Texas' burgeoning clean energy transition. In 2021, he and his family began contracting with solar farms — sites with hundreds of thousands of solar modules — to use his sheep to eat the grass.

What was once a small business has turned into a full-scale operation with more than 8,000 sheep and 26 employees.

"Just the growth has been kind of crazy for us," said Howard, who named his company Texas Solar Sheep. "It's been great for me and my family."

Following the herd
Some agriculture experts say Howard's success reflects how solar farms have become a boon for some ranchers.

Reid Redden, a sheep farmer and solar vegetation manager in San Angelo, Texas, said a successful sheep business requires agricultural land that has become increasingly scarce.

"Solar grazing is probably the biggest opportunity that the sheep industry had in the United States in several generations," Redden said.

The response to solar grazing has been overwhelmingly positive in rural communities near South Texas solar farms where Redden raises sheep for sites to use, he said.

"I think it softens the blow of the big shock and awe of a big solar farm coming in," Redden said.

Fielding more research
Agrivoltaics itself isn't new. Solar farms are land-intensive and require a lot of space that could be used for food production. Agrivoltaics compensates by allowing the two to coexist, whether growing food or caring for livestock.

There is a lot still unknown about the full effects of solar grazing, said Nuria Gomez-Casanovas, an assistant professor in regenerative system ecology at Texas A&M University.

Not enough studies have been done to know the long-term environmental impacts, such as how viable the soil will be for future agriculture, although Gomez-Casanovas suspects solar grazing may improve sheep productivity because the panels provide shade and can be more cost-efficient than mowing.

"We really have more questions than answers," Gomez-Casanovas said. "There are studies that show that the land productivity is not higher versus solar alone or agriculture alone, so it's context-dependent."

As one of Texas' largest solar sheep operators, Howard has more clients than he can handle. He expects to add about 20 more employees by the end of this year, which would nearly double his current workforce. As for the sheep, he has enough already.

Chevron and partners to develop innovative power plants to support AI-focused data centers

power partners

Houston-based Chevron U.S.A. Inc., San Francisco investment firm Engine No. 1, and Boston electric service company GE Vernova have announced a partnership to create natural gas power plants in the United States. These plants support the increased demand for electricity at data centers, specifically those developing artificial intelligence solutions.

“The data centers needed to scale AI require massive amounts of 24/7 power. Meeting this demand is forecasted to require significant investment in power generation capacity, while managing carbon emissions and mitigating the risk of grid destabilization,” Chevron CEO Mike Wirth, shared in a LinkedIn post.

The companies say the plants, known as “power foundries,” are expected to deliver up to four gigawatts, equal to powering 3 million to 3.5 million U.S. homes, by the end of 2027, with possible project expansion. Their design will allow for the future integration of lower-carbon solutions, such as carbon capture and storage and renewable energy resources.

They are expected to leverage seven GE Vernova 7HA natural gas turbines, which will serve co-located data centers in the Southeast, Midwest and West. The exact locations have yet to be specified.

“Energy is the key to America’s AI dominance, “ Chris James, founder and chief investment officer of investment firm Engine No. 1, said in a news release. “By using abundant domestic natural gas to generate electricity directly connected to data centers, we can secure AI leadership, drive productivity gains across our economy and restore America’s standing as an industrial superpower. This partnership with Chevron and GE Vernova addresses the biggest energy challenge we face.”

According to the companies, the projects offer cost-effective and scalable solutions for growth in electrical demand while avoiding burdening the existing electrical grid. The companies plan to also use the foundries to sell surplus power to the U.S. power grid in the future.