These five deals were the largest rounds raised by Houston startups, according to InnovationMap. Photo via Getty Images

Editor's note: As 2022 comes to a close, InnovationMap is looking back at the year's top stories in Houston innovation. When it came to the money raised in Houston, these five startups raised the most, according to reporting done by InnovationMap.

Houston unicorn chemicals company raises $200M series D

Solugen closed its series D funding round at $200 million. Photo via Getty Images

Houston-based Solugen has announced its latest round of investment to the tune of $200 million. The company, which reached unicorn status after its $357 million series C round last year, uses its patented Bioforge processes to produce "green" chemicals from bio-based feedstocks.

"Solugen is reimagining the chemistry of everyday life with enzymes found in nature. We make chemicals better, faster, cheaper, and without fossil fuels from right here in Houston, Texas. Whether you care about the climate, local competitiveness, or just plain old profits, we have good news: it's working," the company states in its news release. Read more.

Houston microgrid tech company announces $150 investment

Houston-based VoltaGrid provides small-scale, self-contained microgrids that can operate independently of major power grids or in tandem with other microgrids. Photo via voltagrid.com

VoltaGrid, a Bellaire-based startup that specializes in distributed power generation via microgrids, has hauled in $150 million in equity funding.

Founded in 2020, VoltaGrid provides small-scale, self-contained microgrids that can operate independently of major power grids or in tandem with other microgrids. VoltaGrid’s product consists of natural gas engines, portable energy storage, natural gas processing and grid power connectivity. Read more.

Houston company raises $138M for next-generation geothermal energy

The future of geothermal energy is here — and just got a big payday. Photo via Getty Images

Houston-based startup Fervo Energy has picked up $138 million in funding to propel its creation and operation of carbon-free power plants fueled by geothermal energy.

Fervos says the series C round will help it complete power plants in Nevada and Utah and evaluate new projects in California, Idaho, Oregon, Colorado, and New Mexico, as well as in other countries.

California-based investment firm DCVC led the round, with participation from six new investors. Read more.

Houston company closes $76M series C round to fuel its mission of reducing carbon emissions

Syzygy Plasmonics has raised a series C round of funding. Photo courtesy of Syzygy

A Houston-based company that is electrifying chemical manufacturing has closed its largest round of funding to date.

Syzygy Plasmonics closed a $76 million series C financing round led by New York-based Carbon Direct Capital. The round included participation from Aramco Ventures, Chevron Technology Ventures, LOTTE CHEMICAL, and Toyota Ventures. The company's existing investors joining the round included EVOK Innovations, The Engine, Equinor Ventures, Goose Capital, Horizons Ventures, Pan American Energy, and Sumitomo Corporation of Americas. According to a news release, Carbon Direct Capital will join Syzygy's board and serve as the series C director. Read more.

Fast-growing energy fintech startup raises $50M series B

The series B capital will allow the company to enhance its core product, while also adding on other workflows that focus on emissions and renewable energy. Image via combocurve.com

Houston-based ComboCurve announced today that it has raised $50 million through a series B funding round led by Dragoneer Investment Group and Bessemer Venture Partners.

Founded in 2017, the company is a cloud-based energy analytics and operating platform that uses sophisticated software to forecast and report on a company's energy assets, including renewables.

The series B capital will allow the company to enhance its core product, while also adding on other workflows that focus on emissions and renewable energy. Read more.


The Artemis Fund, which focuses on providing access to capital to women-led companies, made its first investment. Getty Images

New Houston venture capital firm makes first investment

Follow the money

The new female-founded venture capital fund that launched in Houston in April has made its first investment. The Artemis Fund led Burbank, California-based U-Nest's $2 million Seed round.

U-Nest is a user-friendly app that allows for users to create a 529 college savings plan in less than five minutes and $25. This tool provides access to financial tools that previously were only available to wealthy families who could afford financial advisers.

Syndicate partners, including The Draper Dragon Fund, Band of Angels, and Pasadena Angels, also contributed to the round.

"I'm very excited that The Artemis Fund has led my seed round because they've proven to be an amazing partner that brings a lot of value to the company beyond the money," says U-Nest founder, Ksenia Yudena, in a news release. "During the fundraising process, they made a lot of strategic introductions to the partners and advisers that helped us grow the business. They also coordinated the due diligence with other co-investors that made the process very smooth."

Prior to launching her startup, Yudena managed $1.2 bullion in business as vice president at Capital Group America Funds, and she has over 10 years of experience in financial services.

"I believe that we need more female led funds, because they understand the needs and struggles of the female founders," Yudena continues in the release. "We're on the same page in all matters related to the fundraising and building the successful company."

The Artemis Fund was founded by Stephanie Campbell, Leslie Goldman, and Diana Murakhovskaya, all of whom have years in investment experience from various institutions across the country and here in Houston. The three women wanted to provide a platform to funnel funds to female-founded startups that are constantly overlooked by other VC funds. Only 2 percent of funding from VC firms goes to women-led institutions, the release cites.

Goldman was introduced to the U-Nest team through one of the startup's advisers.

"We are thrilled to announce this as our first investment," Goldman says in the release. "We just need 14 more founders like Ksenia. With her drive, determination, deep expertise in this area, and her ability to attract top, seasoned talent, she sets the bar high for us as we look for additional portfolio companies."

U-Nest's mission of making financial information more accessible to families who need it most was especially attractive for the fund.

"Through her experience, [Yudena] saw a real world need for access to education planning and developed an incredibly impressive product to meet that need," Goldman continues in the release. "U-Nest squarely aligns with the Artemis thesis: stellar management team, traction with a product that will have tremendous impact on people's lives, scalable with a large addressable market opportunity, and a realistic exit strategy that can produce outsized returns."

Peter Mansfield serves as U-Nest's chief marketing officer and previously served as a consultant to Marqeta, which has a slew of successful clients — to the tune of Square, Affirm, DoorDash, Kabbage and Instacart — and recently closed a Series E valuation of $2 billion.

"We couldn't be more excited to have Artemis lead our round. From our first meeting it was clear that The Artemis Fund team understood our mission to eradicate the college loan crisis and shared our desire to champion women entrepreneurs," Mansfield says in the release. "The Artemis Fund is a perfect fit for U-Nest."

The Artemis Fund was founded by Diana Murakhovskaya (left), Leslie Goldman (center), and Stephanie Campbell.Courtesy of The Artemis Fund

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Houston startup raises $6M to scale home-based healthcare platform

fresh funding

As healthcare systems race to expand care beyond hospitals and into the home, investors are placing bigger bets on the infrastructure needed to make that shift possible.

This month, Rosarium Health announced it has raised $6 million in seed funding led by Kalos Ventures, with participation from ResilienceVC, Rock Health Capital, Symphonic Capital, Black Tech Nations Ventures and others.

The investment will help the Houston-based startup continue to build its platform, which features a national network of 800-plus clinicians and 3,000-plus contractors to coordinate home accessibility upgrades and modifications for seniors and people living with disabilities.

For founder and CEO Cameron Carter, the company’s mission grew out of firsthand caregiving experiences.

“From my own personal caregiving experiences, I realized that the benefits exist on paper, but not in reality,” Carter said in a news release. “Families are being left to figure out the paperwork and installations all on their own, which shouldn’t be how this works.”

While Medicare Advantage and Medicaid plans have expanded coverage for home-based services and accessibility modifications, the logistics behind delivering those services often remain fragmented.

Rosarium’s platform coordinates the entire process, from clinical assessments and referrals to contractor management, documentation, reimbursement and installation.

“A clinician can document that a home isn’t safe and a plan can approve a benefit, but there’s no one that’s responsible for making sure the work actually gets done,” Carter says. “We built the missing piece.”

The company was founded in 2021 as Rose Health and was a 2023 participant in the Texas Medical Center’s Accelerator for HealthTech program. It has scaled quickly, building a network of more than 800 clinicians and 3,000 contractors across 34 states.

Rosarium is currently in-network for 1.2 million Medicare and Medicaid lives, with projected coverage expected to reach nearly 4 million by the end of the year, according to the release.

“We’re excited to back Cameron because he and the team at Rosarium are building the infrastructure healthcare needs right now to make the home a safe and comfortable place of care,” Kate Ballinger, investor at Kalos Ventures, added in the release.

As part of the recent investment, Ballinger will join Rosarium’s board of directors.

With eyes on the future, Rosarium plans to grow its partnerships with Medicaid and Medicare Advantage plans, including CalViva and Community Health Plan of Imperial Valley, strengthening its presence in California while expanding access to underserved communities.

Additionally, Carter predicts that home-based healthcare will be part of a broader transformation happening across the industry.

“There’s a growing recognition that health outcomes are shaped by what happens in the home,” he said in the release. “The future of healthcare isn’t just treating people after something goes wrong. It’s creating environments that help prevent those problems in the first place.”

Houston business mogul Tilman Fertitta acquires Caesars in $17.6B deal

Money Moves

Houston billionaire Tilman Fertitta may currently be serving as America’s ambassador to Italy, but his company is as busy as ever. Fresh off its move to revive the Houston Comets WNBA franchise, his company, Fertitta Entertainment, has announced a $17.6 billion deal to acquire Caesars Entertainment, Inc.

Speculation about the deal has been circulating since at least March, according to various media reports. The deal combines Fertitta’s well-known Golden Nugget casino brand with all of the properties in the Caesars’ portfolio, including Las Vegas hotels Caesars Palace, Harrah's, Paris Las Vegas, Planet Hollywood, Horseshoe, The LINQ Hotel, Flamingo, and The Cromwell.

Overall, the combined company will include 60 domestic casino resorts and gaming facilities; online gaming including sports betting, iCasino, and Caesar’s online poker platform; retail sports betting at over 200 third-party locations through the William Hill brand; and over 550 Fertitta Entertainment outlets, including more than 450 Landry's full-service restaurants across America. The companies will combine their loyalty programs, Caesars Rewards, Golden Nugget's 24 Karat Select Club, and Landry's Select Club.

The terms will see Caesars’ shareholders receive $31 per share. Fertitta Entertainment will also acquire approximately $11.9 billion of Caesars' outstanding debt.

The transaction will be financed through a combination of equity contributed by Fertitta Entertainment, assumed Caesars' debt, and new committed debt financing arranged by a group consisting of 10 banks. It is subject to approval by Caesars’ shareholders and government regulators.

Fertitta Entertainment is the Houston-based company behind a diverse array of hospitality businesses, including The Golden Nugget, The Post Oak Hotel, River Oaks District, the Kemah Boardwalk, and Houston’s Downtown Aquarium.

It also operates a number of prominent restaurant brands, including Mastro's Restaurants, Del Frisco's Double Eagle Steakhouse, Morton's The Steakhouse, The Palm, McCormick & Schmick's, Landry's Seafood House, The Oceanaire Seafood Room, and Saltgrass Steak House.

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This article first appeared on CultureMap.com.