Tige Savage of Revolution Ventures and Sandy Guitar of HX Venture Fund explain how they're working together to fund Houston companies in a recent Q&A. Photos courtesy

The HX Venture Fund is a fund of funds that makes investments as a limited partner in venture capital funds across the country — VC funds that want to add Houston companies to their portfolios. HXVF is is paving the way for those investments by setting up immersive days for venture capitals visiting Houston.

One of these HXVF Engage VC days is taking place this week on Wednesday, April 27. Houston entrepreneurs can hear from partners at Revolution — a Washington, D.C.-based firm with three investment funds and strategies — at a fireside chat kicking off the visit at 8:30 am at The Ion.

Tige Savage, co-founder and managing partner of Revolution Ventures, and Sandy Guitar, managing partner of HX Venture Fund, join InnovationMap for a Q&A about how the two organizations are working together to put funding in the hands of Houston tech entrepreneurs.

InnovationMap: Tige, tell me briefly about Revolution and its family of funds. What types of companies are you looking for?

Tige Savage: We started Revolution about 17 years ago. I co-founded it with Steve Case, the founder of AOL and later the chairman of AOL Time Warner. I ran the venture capital group for that media company — that's how he and I got to know each other. AOL was based in Washington DC, so when Steve and I partnered up to launch our firm, we based it in Washington. We knew that to do the investing of the importance and scale that we had in mind, that it was an idea that was bigger than just Washington DC. So, we hopped on airplanes, and we went to where we thought the most interesting best ideas were. And as we spent our time in the market, we realized that there were a lot of opportunities in a lot of places other than New York City and Silicon Valley — we obviously have nothing against New York City or Silicon Valley, and we make investments in those places. But we realized that there was a lot going on in the country. It really gave us an opportunity to start building ecosystems and investing across the country. We looked back and realized we were generating returns in places like Florida, Washington, DC, and Portland, Oregon, et cetera — and there were great opportunities and great entrepreneurs in those places. And the barriers to building companies in those kinds of places had gotten much smaller than they'd been historically — the internet enabled talent to be in more places we've seen that amplified in a major way through the pandemic.

We started investing, and we raised capital from the outside world — and we did that in three efforts. One is something called the Rise of the Rest seed fund that is a very ecosystem focused investment vehicle. They make hundreds of investments out of their $150 million fund — small investments really to be involved in those communities. Imagine that's a very large top of funnel approach for our organization that allows us to project ourselves in a major way. David Hall is managing director of the fund and will be at this event tomorrow. He's been involved in revolution from the very early days. In fact, he was the very first person I hired.

Revolution Ventures is the fund I'm involved in. We are mostly series A investment effort with a much more concentrated portfolio. We're very focused on this same strategy of investing across the entire country. Then we have a growth fund called Revolution Growth that's sort of a later stage fund — call it series C plus, maybe series D, investor. They take larger stakes, but it's also a concentrated portfolio.

We have a few things that we think are unique about Revolution. One is what we call "place" — it's this geographic approach that we've taken from the start we're real believers that there's opportunity everywhere. We've spent a lot of time, money, capital, et cetera, working on those ecosystems and being in them. That's why places lake Houston are so exciting for us. Secondly, is policy. We're in Washington, it's in the DNA of what we do. It used to be very out of favor for tech companies to say they cared about policy, where we've always known that that's very important. If you go to some of the biggest tech companies today they'll tell you that the most important thing to them and the biggest risk they have is policy and regulatory.

We have a history of investing in billion dollar categories where technology is ripe to make the the business model, the consumer value proposition, the supply chain, the margin structure — something like that — better. That's why we called the firm Revolution, targeting places where technology can revolutionize existing categories, largely for the benefit of consumers.

IM: Sandy, what is it about Revolution that makes it a good fund for Houston companies?

Sandy Guitar: We've met with and built relationships with over 400 venture funds, but have to date have only invested in 14. So ours is a super selective process and we are just honored to be limited partners of Revolution. The reasons that make Revolution such a fit are manyfold. One is we seek investment strategies that we think will find deals in Houston. Revolution's strategy of using both the Rise of the Rest at the seed level, but a concentrated portfolio at the series A level is exactly the kind of strategy that we think works. Their generalist approach, but with specific expertise within various technologies means that they can be nimble from a technology point of view, as they look for deal flow in Houston, and they can allow for a force rank that doesn't force them in one tech bucket. We think that's a great advantage to seasoned venture capitalists.

Second of all, we're looking for investment strategies that create high growth companies, which can be innovative to our investors, such as the HEB, Shell, Chevron, Insperity, Lyondellbasell, et cetera. Those investors at HX Venture Fund rely on us to introduce them to opportunities for co-investment at the company or fund level and for opportunities to be customers to the portfolio companies of our VCs. We believe Revolution is producing the kinds companies that are going to be and are of interest to our limited partners as they try to innovate from within. And then third of all, we're looking for really strong track records that show expertise in selecting, growing and exiting companies. We want Houston entrepreneurs to benefit from that kind of acumen. That takes a lot of track record and lot of time in VC to show proof points of all three of those parts of the company formation process, and Revolution has that in spades.

IM: Tige, do you have Houston startups already in your portfolio and how is HXVF helping you grow your presence in Houston?

TS: Across our funds, between the Rise of the Rest fund and Revolution Ventures, I think there are 19 Texas investments, one in Houston. We also have a company called Big Commerce, which is in the growth fund that's a Texas and Australia-based company. Goodfair is an investment of the Rise of the Rest fund. They made an early investment — love the strategy of really trying to make fashion more affordable and more environmentally conscious and more economically achievable.

We are equally fortunate to have HX involved. Not only are they a great investor, but they're also a great facilitator of intersections for firms like ours that are actively interested in deploying capital in interesting places. We're only a handful of folks, so it takes a lot of leverage. Our Rise of the Rest strategy is an institutional effort, but having partners in the market really matters. This is why we're so excited to be partnered with Sandy and the gang there, because we really view that strategy as a unique and interesting one.

IM: Sandy, tell me about these events you’ve been putting on for your portfolio funds at HXVF.

SG: This is our second event this year already, and we've done about half a dozen of these so far of what we call VC engage days. The idea of the VC engage day is to really connect all of our communities together. In the mornings, we like to make sure that the venture capitalist coming in has an opportunity to speak with our ecosystem and that anybody for free can come and listen to these very experienced and successful venture capitalists. From there, we curate one-on-one meetings between select entrepreneurs and venture capitalists that are part of the day. We also do one-on-ones with our limited partners and the venture capitalists. And then, at the end of the day, we have a private dinner to provide more bespoke conversations either with our limited partners or with the Founder's Circle — 20-plus serial entrepreneurs here in Houston that provide a voice to us at HXVF.

TS: What was just described — that's is not a typical thing. LPs don't do that. We're obviously excited about it. It's a thing unique to Houston. HXVF is doing a lot of work to make these things happen.

IM: Tige, as someone looking in from DC into the Houston market, what do you see happening in the Houston market? What are you most excited about getting to tap into on your visit?

TS: Houston is known for a number of industries and is smart to leverage its engineering talent and try to focus that on ways to amplify it in technology. We think that the opportunities around sort of innovative manufacturing or around logistics around climate are particularly interesting to our funds, because when we talk about revolutionizing large categories in ways that make things better for consumers, those are all major elements that can have that kind of impact.

Houston's an extremely multicultural place. The engineering talent is extremely robust. The ability for large corporations to invest in and take advantage of what's going on in tech is extremely exciting. Finding a way for catalytic activity to happen within within these large businesses is sometimes a challenge. What we're most interested in is seeing where that's happening.

The ecosystem is really blooming. This is sort of the bread and butter of what we do. Collaboration, capital, and network density are what we've always thought are the three key things that are differentiators for a market. And those things are all coming together.

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This conversation has been edited for brevity and clarity.

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Former NASA astronaut, official joins Venus Aerospace board

astronaut appointment

Retired Air Force colonel and former NASA astronaut Pamela Melroy, who previously served as deputy administrator of NASA, recently joined the board of directors at Houston-based Venus Aerospace.

Venus Aerospace, a startup founded in 2020, develops rocket engine technology, including rotating rocket detonation engines for hypersonic flights. These engines promise higher power, greater fuel efficiency and lower emissions than conventional rocket engines or jet engines, according to the Interesting Engineering website. The global rocket propulsion market is expected to grow from $9.5 billion in 2025 to $29.9 billion by 2034, according to a forecast by ResearchAndMarkets.com.

“Advanced rocket propulsion has been of interest to me for over a decade, and Venus Aerospace’s recent achievements in demonstrating the stability of rotating detonation rocket engines represent a significant development,” says Melroy, who left NASA earlier this year and is now a self-employed consultant living in Arlington, Virginia.

Melroy, a member of the United States Astronaut Hall of Fame, has built an illustrious career in the aerospace sector. Aside from being a NASA official, she was:

  • One of only two female astronauts to command a space shuttle mission
  • Deputy program manager of Orion space exploration initiatives at aerospace and defense contractor Lockheed Martin
  • Senior technical adviser and director of field operations for the Federal Aviation Administration’s Office of Commercial Space Transportation, where she came up with the first safety guidelines for commercial human spaceflight
  • Deputy director of the Tactical Technology Office at the Defense Advanced Research Projects Agency (DARPA).
  • An adviser for the establishment of the Australian Space Agency

Venus Aerospace said in a news release that as a leader at three federal agencies, “Melroy shaped America’s strategy in space, accelerated commercial space partnerships, and deepened space exploration.”

Sassie Duggleby, co-founder and CEO of Venus Aerospace, called Melroy “a preeminent leader in the world of aerospace.”

In May, Venus Aerospace completed the inaugural test flight of its rotating detonation rocket engine. The startup, whose headquarters is at the Houston Spaceport, says it’s the only company in the world that has manufactured a flight-proven, high-thrust rotating detonation rocket engine.

On the horizon for Venus Aerospace is production of Stargazer M4, a high-speed aircraft capable of two-hour global travel.

Venus Aerospace’s investors include Airbus Ventures, America’s Frontier Fund, Trousdale Ventures, and Prime Movers Lab. The startup also gets support from the Air Force Research Laboratory (AFWERX), the Air Force, NASA and DARPA.

Jordan Blashek, co-founder and managing partner of America’s Frontier Fund, which backs startups creating breakthrough technologies, said his firm’s investment in Venus Aerospace “underscores our focus on supporting American companies that are revolutionizing industries of the future.”

“With recent hypersonic advancements from China and Russia, safeguarding American innovation and securing our industrial base has never been more urgent,” Blashek added. “Venus Aerospace is poised to redefine hypersonic flight and ensure America’s continued leadership in aerospace innovation.”

Since its founding, Venus Aerospace has raised $78.3 million in investments, according to PitchBook data.

Texas-based energy startup raises $1 billion on heels of Houston expansion

Powering Up

Austin-based startup Base Power, which offers battery-supported energy in the Houston area and other regions, has raised $1 billion in series C funding—making it one of the largest venture capital deals this year in the U.S.

VC firm Addition led the $1 billion round. All of Base Power’s existing major investors also participated, including Trust Ventures, Valor Equity Partners, Thrive Capital, Lightspeed Venture Partners, Andreessen Horowitz (a16z), Altimeter, StepStone Group, 137 Ventures, Terrain, Waybury Capital, and entrepreneur Elad Gil. New investors include Ribbit Capital, Google-backed CapitalG, Spark Capital, Bond, Lowercarbon Capital, Avenir Growth Capital, Glade Brook Capital Partners, Positive Sum and 1789 Capital Management.

Coupled with the new $1 billion round, Base Power has hauled in more than $1.27 billion in funding since it was founded in 2023.

Base Power supplies power to homeowners and the electric grid through a distributed storage network.

“The chance to reinvent our power system comes once in a generation,” Zach Dell, co-founder and CEO of Base Power, said in a news release. “The challenge ahead requires the best engineers and operators to solve it, and we’re scaling the team to make our abundant energy future a reality.”

Zach Dell is the son of Austin billionaire and Houston native Michael Dell, chairman and CEO of Round Rock-based Dell Technologies.

In less than two years, Base Power has developed more than 100 megawatt-hours of battery-enabled storage capacity. One megawatt-hour represents one hour of energy use at a rate of one million watts.

Base Power recently expanded its service to the city of Houston. It already was delivering energy to several other communities in the Houston area. To serve the Houston region, the startup has opened an office in Katy.

The startup also serves the Dallas-Fort Worth and Austin markets. At some point, Base Power plans to launch a nationwide expansion.

To meet current and future demand, Base Power is building its first energy storage and power electronics factory at the former downtown Austin site of the Austin American-Statesman’s printing presses.

“We’re building domestic manufacturing capacity for fixing the grid,” Justin Lopas, co-founder and chief operating officer of Base Power, added in the release. “The only way to add capacity to the grid is [by] physically deploying hardware, and we need to make that here in the U.S. ... This factory in Austin is our first, and we’re already planning for our second.”

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This article originally appeared on EnergyCapitalHTX.com.

Expert on Houston’s energy advantage: Building affordability, reliability for all

Guest Column

As the energy capital of the world, Houston has been at the forefront of innovation, powering industries and communities for generations. Many Houston families, however, are facing a reality that undermines our leadership: high energy bills and ongoing concerns about grid reliability.

Affordability and reliability are not just technical issues; they’re equity issues. To remain the world leader in energy, we must ensure that every household has access to affordable and dependable power.

Affordability: The First Step Toward Equity

According to the recent 2025 study by The Texas Energy Poverty Research Institute, nearly 80% of low- to moderate-income Houstonians scaled back on basic needs to cover electric bills. Rising costs mean some Houstonians are forced to choose between paying their utility bill or paying for groceries.

Additionally, Houston now has the highest poverty rate among America’s most populous cities. Energy should not be a privilege for only half of our city’s population. That’s why affordability needs to be at the center of Houston’s energy conversation.

Several practical solutions exist to help address this inequity:

  • We can increase transparency in electricity pricing and help families better understand their electricity facts labels to make smarter choices.
  • We can expand energy efficiency programs, like weatherizing homes and apartments, swapping out old light bulbs for LEDs, and adopting smart thermostats.
  • Incentives to help families invest in these changes can deliver long-term benefits for both them and apartment complex owners.

Many small changes, when combined, can add up to significant savings for families while reducing overall demand on the grid.

Reliability: A Shared Community Priority

The memories of Hurricane Beryl, Derecho, and Winter Storm Uri are still fresh in the minds of Texans. We saw firsthand the fragility of our grid and how devastating outages are to families, especially those without resources to handle extreme weather. Reliability of the grid is an issue of public health, economic stability, and community safety.

Houston has an opportunity to lead by embracing innovation. Grid modernization, from deploying microgrids to expanding battery storage, can provide stability when the system is under stress. Partnerships between utilities, businesses, and community organizations are key to building resilience. With Houston’s innovation ecosystem, we can pilot solutions here that other regions will look to replicate.

Energy Equity in Action

Reliable, affordable energy strengthens equity in tangible ways. When households spend less on utilities, they have more to invest in their children’s education or save for the future. When power is stable, schools remain open, businesses continue to operate, and communities thrive. Extending energy efficiency programs across all neighborhoods creates a fairer, more balanced system, breaking down inequities tied to income and geography.

Studies show that expanding urban green spaces such as community gardens and tree-planting programs can lower neighborhood temperatures, reduce energy use for cooling, and improve air quality in disadvantaged areas, directly reducing household utility burdens.

In Houston, for example, the median energy burden for low-income households is 7.1% of income, more than twice that of the general population, with over 20% of households having energy burdens above 6%.

Research also demonstrates that community solar programs and urban cooling investments deliver clean, affordable power, helping to mitigate heat stress and making them high-impact strategies for energy equity and climate resilience in vulnerable neighborhoods.

Public-Private Partnerships Make the Difference

The solutions to affordability and reliability challenges must come from cross-sector collaboration. For example, CenterPoint Energy offers incentives through its Residential and Hard-to-Reach Programs, which support contractors and community agencies in delivering energy efficiency upgrades, including weatherization, to low-income households in the greater Houston area.

Nonprofits like the Houston Advanced Research Center (HARC) received a $1.9 million Department of Energy grant to lead a weatherization program tailored for underserved communities in Harris County, helping to lower bills and improve housing safety

Meanwhile, the City of Houston’s Green Office Challenge and Better Buildings Initiative bring private-sector sponsors, nonprofits, and city leadership together to drive energy reductions across millions of square feet of commercial buildings, backed by training and financial incentives. Together, these partnerships can result in real impact that brings more equity and access to affordable energy.

BKV Energy is committed to being part of the solution by promoting practical, consumer-focused strategies that help families save money and use energy more efficiently. We offer a suite of programs designed to provide customers with financial benefits and alleviate the burden of rising electricity bills. Programs like BKV Energy’s demonstrate how utilities can ease financial strain for families while building stronger customer loyalty and trust. Expanding similar initiatives across Houston would not only lower household energy burdens but also set a new standard for how energy companies can invest directly in their communities.

By proactively addressing affordability, energy companies can help ensure that rising costs don’t disproportionately impact vulnerable households. These efforts also contribute to a more resilient and equitable energy future for Houston, where all residents can access reliable power without sacrificing financial stability.

Houston as a Blueprint

Houston has always been a city of leadership and innovation, whether pioneering the space race, driving advancements in medical research at the Texas Medical Center, or anchoring the global energy industry. Today, our challenge is just as urgent: affordability and reliability must become the cornerstones of our energy future. Houston has the expertise and the collaborative spirit to show how it can be done.

By scaling innovative solutions, Houston can make energy more equitable, strengthening our own community while setting a blueprint for the nation. As the energy capital of the world, it is both our responsibility and our opportunity to lead the way to a more equitable future for all.

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Sam Luna is director at BKV Energy, where he oversees brand and go-to-market strategy, customer experience, marketing execution, and more.