This week's roundup of Houston innovators includes Matthew Costello of Voyager, Arielle Rogg, and Nathan Childress of Solar Slice. Photos courtesy

Editor's note: Every week, I introduce you to a handful of Houston innovators to know recently making headlines with news of innovative technology, investment activity, and more. This week's batch includes a logistics startup founder, a marketing expert, and a solar energy innovator.

Matthew Costello, CEO and co-founder of Voyager Portal

Houston logistics SaaS innovator is making waves with its expanded maritime shipping platform. Photo courtesy of Voyager

For several years now, Matthew Costello has been navigating the maritime shipping industry looking for problems to solve for customers with his company, Voyager Portal.

Initially, that meant designing a software platform to enhance communications and organization of the many massive and intricate global shipments happening every day. Founded in 2018 by Costello and COO Bret Smart, Voyager Portal became a integral tool for the industry that helps users manage the full lifecycle of their voyages — from planning to delivery.

"The software landscape has changed tremendously in the maritime space. Back in 2018, we were one of a small handful of technology startups in this space," Costello, who serves as CEO of Voyager, says on the Houston Innovators Podcast. "Now that's changed. ... There's really a huge wave of innovation happening in maritime right now." Read more.

Arielle Rogg, principal and founder of Rogg Enterprises

Arielle Rogg writes in a guest column for InnovationMap about AI in the workforce. Photo via LinkedIn

Arielle Rogg isn't worried about artificial intelligence coming for her job. In fact, she has three reasons why, and she outlines them in a guest column for InnovationMap.

"The advent of AI pushes us humans to acquire new skills and hone our existing abilities so we can work alongside these evolving technologies in a collaborative fashion. AI augments human capabilities rather than replacing us. I believe it will help our society embrace lifelong learning, creating new industries and jobs that have never existed before," she writes in the piece. Read more.

Nathan Childress, founder of Solar Slice

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

Nuclear engineer and entrepreneur Nathan Childress wants consumers to capture their own ray of sunlight to brighten the prospect of making clean energy a bigger part of the power grid. That's why he founded Solar Slice. The new venture offers a fulfilling way to encourage and promote solar energy and a greener planet.

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.

Recent 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,” Childress says, adding that “they’re more just projects that sound good, that are not actually taking any action." Read more.

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

Houston entrepreneur launches new venture to shine light on sustainability

energy transition

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.

------

This article originally ran on EnergyCapital.

Ad Placement 300x100
Ad Placement 300x600

CultureMap Emails are Awesome

U.S. News declares Houston hospital No. 1 in Texas for the 15th year

Top of the Chart

Houston Methodist Hospital and over a dozen more Houston-area hospitals have earned bragging rights in U.S. News & World Report's newly released rankings of the Best Hospitals for 2026-2027.

Every year, U.S. News annually evaluates nearly 4,500 U.S. hospitals to determine which meet the publication's rigorous standards and offer the best care for patients across 14 adult specialties and 23 procedures and conditions. New to this year's batch of rankings, U.S. News introduced regional rankings in cancer; cardiology; heart and vascular surgery; orthopedics; and rehabilitation.

Houston Methodist Hospital was the only Texas institution named on U.S. News' Best Hospitals Honor Roll, a prestigious list of the 20 best medical centers in the country. Houston Methodist also reigns as Texas' best hospital for the 15th consecutive year.

The hospital also shines among the nation’s best in 10 specialties:

  • No. 5 – Gastroenterology and GI Surgery
  • No. 7 – Obstetrics and Gynecology
  • No. 10 – Cardiology, Heart, and Vascular Surgery
  • No. 11 – Pulmonology and Lung Surgery
  • No. 13 – Neurology and Neurosurgery
  • No. 19 – Cancer
  • No. 21 – Orthopedics
  • No. 23 – Diabetes and Endocrinology
  • No. 24 – Geriatrics
  • No. 43 – Urology
Houston Methodist also earned high performing distinctions across one regional specialty (Rehabilitation) and 21 procedures and conditions.

"This recognition reflects the remarkable dedication of our physicians and employees and their tireless focus on delivering unparalleled care to our patients," said Houston Methodist president and CEO Marc L. Boom, M.D. in a press release. "While we are honored by this recognition, its true significance lies in what it represents — an unwavering commitment to putting patients first."

Elsewhere in Houston, The University of Texas MD Anderson Cancer Center ranked as the No. 1 best cancer hospital in the nation for the 12th year in a row.

"This ranking is a tremendous honor, and it reflects our unwavering commitment to continue making progress in our mission to end cancer," said UT MD Anderson president Peter WT Pisters, M.D. "We are deeply grateful to everyone who made this recognition possible: our faculty and staff, volunteers, donors, and the patients and families we are honored to serve."

MD Anderson also earned national rankings in two specialties — Urology (No. 6) and Gastroenterology and GI Surgery (No. 16) — and it received high performing distinctions in six procedures and conditions: Colon Cancer Surgery; Ear, Nose, and Throat Surgery; Gynecological Cancer Surgery; Leukemia, Lymphoma, and Myeloma Treatment; Lung Cancer Surgery; and Prostate Cancer Surgery.

The additional Houston hospitals that ranked among the best in Texas for 2026-2027 are:

  • No. 3 – Houston Methodist Sugar Land Hospital (tied with Baylor University Medical Center Dallas)
  • No. 5 – Baylor St. Luke's Medical Center, Houston
  • No. 6 – Memorial Hermann Hospital, Houston
  • No. 7 – Houston Methodist The Woodlands Hospital
  • No. 10 – Memorial Hermann Greater Heights Hospital (tied with St. David's Medical Center, Austin)
  • No. 14 – Houston Methodist Baytown Hospital
  • No. 15 – Memorial Hermann Memorial City Medical Center, Houston
  • No. 21 – Houston Methodist Clear Lake Hospital, Nassau Bay; St. Luke's Health-The Woodlands Hospital; University of Texas Medical Branch, Galveston (also tied with six more Texas hospitals)
  • No. 30 – Memorial Hermann Sugar Land Hospital (tied with five other Texas hospitals)
  • No. 36 – HCA Houston Healthcare Kingwood (tied with Parkland Health-Dallas)
---

This article originally appeared on CultureMap.com.

Houston helps power Texas’ rise as AI infrastructure hub, new report finds

eyes on ai

Houston plays a major role in Texas’ rapidly evolving AI economy, a new report indicates.

The report from Build American AI, a pro-AI advocacy group, notes Houston’s growing AI presence includes:

  • A factory being built by AI chipmaker NVIDIA and electronics manufacturer Foxconn that will produce AI supercomputers and infrastructure systems
  • Houston Methodist’s use of ambient AI to listen to health care providers’ conversations with patients, eliminating the need for manual notetaking
  • An abundance of AI products and services for the energy sector

Across the state, billions of dollars in new AI investments are fueling advancements in construction, manufacturing, energy production, logistics, and health care, according to the report.

“Texas is not merely a place where AI products will be used. Texas is becoming one of the places where the AI economy is being assembled,” the report says.

Particularly noteworthy are four major AI-related projects around the state representing an investment of more than $140 billion, including Google’s $40 billion buildout of AI data centers.

“While California had a headstart in building the software era, Texas will build the infrastructure era,” says the report. “That is not a slogan. Economic research has revealed for decades that innovation happens where the local conditions make building and collaboration possible, and Texas is positioned to be a central hub.”

According to the report, components of Texas’ infrastructure era include:

  • Energy leadership
  • Top-tier hospitals
  • Semiconductor investments
  • Construction capabilities
  • Data center growth
  • Major companies and universities

On the workforce front, Stanford University’s 2026 AI Index found Texas had 80,547 AI job postings in 2025, accounting for 8 percent of the national total.

“Texas no longer needs to ask whether AI will reshape the economy. It already has,” the report concludes. “The question is whether Texas will merely host part of that future or lead it.”

Who are Houston's top innovators? Nominate now for 2026 Houston Innovation Awards

Calling All Innovators

Calling all Houston innovators: The 2026 Houston Innovation Awards, presented by InnovationMap, return this fall to celebrate the best and brightest in the Houston innovation ecosystem right now.

We're asking you to nominate Houston's top innovators and startups for this year's awards. Nominations are open now through August 27 and can be made on behalf of yourself, your organization, and other influential leaders in the local innovation scene.

The annual awards program recognizes the most innovative individuals and companies in Houston across 10 prestigious categories.

This year's awards will honor the following categories:

  • Minority-founded Business, honoring an innovative startup founded or co-founded by BIPOC or LGBTQ+ representation.
  • Female-founded Business, honoring an innovative startup founded or co-founded by a woman.
  • Energy Transition Business, honoring an innovative startup providing a solution within renewables, climatetech, clean energy, alternative materials, circular economy, and beyond.
  • Health Tech Business, honoring an innovative startup within the health and medical technology sectors.
  • Deep Tech Business, honoring an innovative startup providing technology solutions based on substantial scientific or engineering challenges, including those in the AI, robotics, and space sectors.
  • Startup of the Year (People's Choice), honoring a startup celebrating a recent milestone or success. The winner will be selected by the community via an interactive voting experience.
  • Scaleup of the Year, honoring an innovative later-stage startup that's recently reached a significant milestone in company growth.
  • Incubator/Accelerator of the Year, honoring a local incubator or accelerator that is championing and fueling the growth of Houston startups.
  • Mentor of the Year, honoring an individual who dedicates their time and expertise to guide and support budding entrepreneurs.
  • Trailblazer, honoring an innovator who's made a lasting impact on the Houston innovation community.

You have three weeks to submit nominees, so don't delay — nominate today at this link or fill out the form below. Qualified nominees will receive a formal application to complete, which will be reviewed by our esteemed panel of judges to determine the finalists and winners.

More announcements about the 2026 Houston Innovation Awards are coming soon, including an introduction to this year's panel of judges. Interested in sponsoring the 2026 Houston Innovation Awards? Please contact sales@innovationmap.com.