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Houston solar company expands in Puerto Rico, receives DOE funding

island opportunities

Sunnova's platform is expanding in Puerto Rico. Photo courtesy of

A Houston renewable energy company has announced two initiatives that are hoping to provide more grid stability on the island of Puerto Rico.

Sunnova announced that it's expanding its Sunnova Sentient Virtual Power Plant platform. The company has also been selected by the United States Department of Energy’s Grid Deployment Office to be a part of a $440 million investment from the Puerto Rico Energy Resilience Fund.

Sunnova's VPP platform is expanding in Puerto Rico through a collaboration between the Sunnova Power Flex Program and LUMA's Customer Battery Energy Sharing program in Puerto Rico. This plan is "to transform the role of distributed solar and storage customers in enhancing grid stability during peak demand periods, all while offering them financial incentives for their participation," according to Sunnova's release.

Puerto Rican residents can opt into the Sunnova Flex Power Program and will be compensated for the power supplied by their batteries. According to Sunnova, a battery could earn up to $1,000 for this first pilot year.

“We are incredibly excited about the possibilities that our industry-leading VPP platform—delivered to our customers through our Sunnova Flex Power Program—holds for the people of Puerto Rico,” John Berger, CEO of Sunnova, says in the release. “As we continue to spearhead the transition towards a cleaner and more robust future, extending our VPP platform will not only help reshape the energy landscape in Puerto Rico but also empower our valued customers to play an integral role in bolstering grid stability. We eagerly anticipate the transformative impact this program will have on our customers and the Puerto Rican community at large.”

Sunnova has 52,000 solar and storage customers on the island and has installed storage to a capacity of 800 MWh.

“We're excited to collaborate with Sunnova on this important initiative, which signifies a major step in our ongoing efforts to enhance energy reliability for Puerto Rico. We're dedicated to achieving a more stable energy supply, reducing disruptions, and securing a resilient energy future, ultimately benefiting the people of Puerto Rico,” Jessica Laird, VP of Customer Experience at LUMA, says in the statement.

Sunnova's selection by the DOE Grid Deployment Office makes the company one of the eight to receive chunk of a $440 million commitment to install rooftop solar and batteries in PR.

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Greentown Labs names first head of philanthropy

new hire

Greentown Labs has named its first-ever head of philanthropy in an "all hands on deck" move to advance philanthropic support for climatetech ventures.

Stacey Harris will join the clean energy incubator and brings more than 15 years of experience to the role, having led major partnerships at organizations like Make-A-Wish International, Movember, Net Impact and the Greater Phoenix Economic Council, according to a release from Greentown.

Harris will be based out of Greentown's Boston-area incubator but will support both its Texas and Massachusetts locations. Greentown maintains headquarters in Houston and Somerville, Massachusetts.

“Stacey brings national reach, local roots, and the entrepreneurial spirit we need,” Georgina Campbell Flatter, CEO of Greentown, said in the release. “She understands that philanthropy isn’t just about raising funds—it’s about building a movement, sustaining an ecosystem, and accelerating change together.”

In her new role, Harris will be tasked with designing and leading a philanthropic strategy that aligns with Greentown's corporate partnerships.

The incubator said in the release that Harris's hire is coming at a "pivotal moment," and the organization is "calling for all hands on deck" to support the clean energy space. "This includes inspiring states and local governments to lean in, individuals and family offices to step up, foundations to mobilize resources, and industry to invest boldly," the release states.

"Philanthropy has the unique power to accelerate innovation where it matters most—by backing the people and ideas that can change the world,” Harris added in the release. “At Greentown, I see an incredible opportunity to partner with local communities in Massachusetts and Texas, while also mobilizing catalytic funds that fuel entrepreneurs globally. I’m energized to work across donors, foundations, and industry to ensure these founders have what they need to go further, faster—together.”

Harris is the latest in a series of new hires for Greentown.

Lawson Gow, founder of The Cannon co-working space and former managing partner at Helium Capital, was named Greentown's Head of Houston in July. Flatter was also named as the organization's new CEO in February, after Naheed Malik was named its new CFO in January.

Houston companies team up on $700M floating solar projects in Texas

float on

Diamond Infrastructure Solutions has given Third Pillar Solar exclusive rights to access Diamond’s Texas reservoirs for the possible launch of utility-scale floating solar installations. Both companies are based in the Houston area.

The potential investment in the floating solar project exceeds $700 million, and the project is expected to generate up to 500 megawatts of solar energy.

“Our agreement with Third Pillar marks a bold step forward in how we think about infrastructure and sustainability. By transforming underutilized water surfaces into clean energy assets, Diamond is advancing its commitment to innovation while delivering long-term value,” Ed Noack, CEO of Diamond Infrastructure Solutions, said in the release.

Dow Chemical Co. and a fund directed by Macquarie Asset Management announced the formation of Diamond in 2024. Dow holds a majority stake in Diamond, which owns Gulf Coast infrastructure used by Dow and other industrial customers at five locations in Texas and Louisiana.

The solar installations are scheduled to be built and in operation by the end of the decade.

The agreement between Diamond and Three Pillar “demonstrates the growing appetite for utility-scale energy solutions and highlights how floating solar can enhance and transform the value of existing infrastructure, all while providing cost-competitive energy, preserving agricultural land, reducing evaporation losses, and existing out of public view,” Jaimeet Gulati, CEO of Third Pillar, added in the realease.

Founded in 2022 and majority-owned by renewable energy investor Glentra Capital, Third Pillar develops, owns and operates floating photovoltaic solar installations. The installations are designed to float in places such as wastewater lagoons, reclaimed sand and gravel pits and industrial reservoirs. Third Pillar’s development pipeline contains more than 60 projects.

Rice Alliance names participants in 22th annual energy forum

where to be

The Rice Alliance for Technology and Entrepreneurship has named the 100 energy technology ventures that will convene next month at the 22nd annual Rice Alliance Energy Tech Venture Forum, as part of the second annual Houston Energy and Climate Startup Week.

Half of the startups, which hail from nine countries and 19 states, will pitch during the event, which culminates in the annual recognition of the “Most Promising Companies." The 12 companies that were named to Class 5 of the Rice Alliance Clean Energy Accelerator will present during Demo Day to wrap up their 10-week program.

In addition to pitches, the event will also host keynotes from Arjun Murti, partner of energy macro and policy at Veriten, and Susan Schofer, partner at HAX and chief science officer at SOSV. Panels will focus on corporate innovation and institutional venture capital. Attendees can also participate in one-on-one office hours with founders and investors.

The forum will take place Sept. 18 at Rice University’s Jones Graduate School of Business.

The 2025 presenting companies include:

  • Aeromine Technologies
  • AlumaPower
  • Ammobia
  • Aqua-Cell Energy
  • Aquafortus
  • Aquora Biosystems
  • Arculus Solutions
  • Artemis Production Solutions
  • AtmoSpark Technologies
  • AtoMe
  • Badwater Alchemy
  • C+UP
  • Carbon Blade
  • Circul8 Energy & Environment
  • CO2 Lock
  • Direct C
  • DirectH2
  • Ekona Power
  • Exum Instruments
  • Fathom Storage
  • Flyscan Systems
  • Geokiln Energy Innovation
  • Glint Solar
  • Hive Autonomy
  • Horne Technologies
  • Hydrogenious LOHC Maritime
  • Innowind Energy Solutions
  • Iron IQ
  • Kewazo
  • LiNova Energy
  • Lukera Energy
  • Lydian
  • Mcatalysis
  • Metal Light
  • Mithril Minerals
  • Moment Energy
  • Moonshot Hydrogen
  • Muon Vision
  • PolyQor
  • Polystyvert dba UpSolv
  • Precision Additive
  • RapiCure Solutions
  • Resollant
  • SiriNor
  • Skyven Technologies
  • Sperra
  • SpiroPak
  • Sweetch Energy
  • Teverra
  • Utility Global
  • Xplorobot

Companies participating in office hours include:

  • Active Surfaces
  • Advanced Reactor Technologies
  • Advanced Thermovoltaic Systems
  • Ai Driller
  • Airbridge
  • Airworks Compressors
  • Austere Environmental
  • Brint Tech
  • CarbonX Solutions
  • Cavern Energy Storage
  • Celadyne Technologies
  • CERT Systems
  • CubeNexus
  • Deep Anchor Solutions
  • Ellexco
  • Emerald Battery Labs
  • Equipt.ai
  • FAST Metals
  • FieldMesh
  • FlowCellutions
  • Fluidsdata
  • GrapheneTX
  • GS VORTEX SYSTEMS
  • Installer
  • Kanin Energy
  • MacroCycle Technologies
  • Modular MOPU
  • NANOBORNE
  • NetForwards
  • Oxylus Energy
  • PetroBricks
  • PHNXX
  • RASMAG Energy
  • RedShift Energy
  • RENASYS
  • RenewCO2
  • Resonantia Diagnostics
  • Respire Energy
  • Safety Radar
  • SeaStock
  • Secant Fuel
  • SolGrapH
  • Stratos Perception
  • Terraflow Energy
  • Think Energy Holdings
  • Turnover Labs
  • Utiltyx
  • Zenthos Energy

Find information about the full day of events here, or click here to register.

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