The climate technology sector has experienced significant changes since its emergence in the 2000s, initially driven by concerns about global warming and investments in renewable energy startups. Despite early setbacks due to challenges in scaling complex technologies, recent years have seen renewed efforts to address barriers facing deep tech startups as they seek commercialization.
A persistent issue for climate tech companies is navigating the path from initial discovery through demonstration and deployment. Startups often encounter fragmented support systems, insufficient ecosystem connectivity, and inadequate planning for critical demonstration stages. These gaps can delay funding and stall progress toward commercial viability.
Securing capital remains a challenge for many deep tech ventures, particularly during the demonstration phase. The lack of specialized financial instruments tailored to the unique risks and long development timelines of these projects means that some startups struggle to attract investment needed for full-scale demonstrations. Additionally, founders frequently lack connections or expertise required to form effective partnerships with industry players.
To address these obstacles, various organizations are developing new support structures and financing tools. Foundations, family offices, and state governments are increasingly providing catalytic capital to fill funding shortfalls in energy technology. Financial innovations such as the Deployment-Simple Agreement for Equity (D-SAFE), announced by Elemental Impact and Wilson Sonsini, are designed to de-risk early activities related to demonstration projects by simplifying agreements around permitting, project design, budgeting, contracting, and community engagement.
Blended finance vehicles now allow philanthropic sources to leverage their resources alongside market-rate investors in support of deep tech projects. Ecosystem support organizations are also offering targeted programs at different startup stages: fellowships like Breakthrough Energy Fellows and Activate provide nondilutive financing and mentorship at the discovery stage; accelerators such as New York’s For Climate Tech program connect companies with industry executives and supply chain partners; project developer firms like Mark1 collaborate with institutions including Rocky Mountain Institute to guide late-stage startups through engineering and construction processes.
Government initiatives such as Massachusetts’ Critical Mass program offer customized assistance for late-stage technology demonstrations. Large engineering procurement construction firms—Black & Veatch, Fluor, Halliburton’s Naviscale—run or sponsor accelerators that use their industry experience and networks to help growth-stage startups prepare for large-scale deployments.
RTI International has been active in energy technology development for over three decades at its Durham, North Carolina laboratories. Its RTI Pilot Xcelerator (RPX) facility supports clean energy startups with pilot project opportunities aimed at bridging the gap between concept development and commercial readiness. Successful collaborations have included work with Syzygy Plasmonics, Lydian Labs, and Aether Fuels.
In October 2025, RTI began expanding its RPX facility—a project expected to be completed in 2026—that will double its technology demonstration space to 25,000 square feet while adding 3,000 square feet of office space. A future addition will feature a one-megawatt photovoltaic solar array intended for testing renewables-to-X technologies. The facility operates on a “plug-and-play” model providing utilities and engineering support so that startups do not need to invest heavily in infrastructure before conducting pilot trials.
The RPX offers a suite of commercialization services including market intelligence research, regulatory analysis, supplier scouting, techno-economic assessments, life-cycle analyses, community benefits evaluations, and bankability assessments. By collaborating with developers and investors throughout this process, RTI aims to ensure participating startups are positioned effectively for further investment into demonstration-scale projects.
Representatives from RTI will be available at the upcoming Trellis Conference in San Jose from October 27-29 to discuss opportunities offered by the RPX facility.
