SunHydrogen Issues Shareholder Letter Addressing Key Questions
CEO Tim Young provides candid update on Austin pilot findings, manufacturing strategy, and the company’s dual-track technology roadmap
CORALVILLE, IA, April 23, 2026 (GLOBE NEWSWIRE) — SunHydrogen, Inc. (OTCQB: HYSR), the developer of a breakthrough technology that produces renewable hydrogen using only sunlight and water, today issued the following letter to its shareholders.
To Our Shareholders and Valued Supporters,
This letter is our answer to the questions you have been asking. You deserve a clear picture of where we are, what we are working through, and why we believe the work being done right now is the right work.
First, I want to say that I am genuinely proud of our team and grateful for the dedication of our partners. Based on published data, SunHydrogen has achieved higher solar to hydrogen efficiency than any other entity working on direct solar to hydrogen conversion, using materials and processes that can produce economical renewable hydrogen. That is not a small thing, and it is the foundation everything else is being built on.
SunHydrogen’s plan consists of three phases. First, validate multi-panel outdoor operation and identify real-world performance data. Second, convert those learnings into a controlled manufacturing workflow and demonstrate repeatability in a 100 square meter pilot, preferably at a customer site. Third, use a validated platform and process to secure early deployments and offtake agreements, then scale from there. Phase one is progressing and giving us the answers we need.
As you are aware, we chose the Hydrogen ProtoHub at UT Austin’s J.J. Pickle Research Campus as the site for our first multi-panel outdoor deployment. This was not a casual decision. The ProtoHub is co-managed by GTI Energy and UT Austin’s Center for Electromechanics, and it recently received the 2026 Robert Zalosh Hydrogen Safety Excellence Award from the Center for Hydrogen Safety. We wanted our technology validated in the most credible environment possible, with partners who bring decades of hydrogen safety and systems expertise. GTI Energy provides safety review and on-site systems integration support for our installation, and their involvement reflects the seriousness with which we are approaching this demonstration.
The January 2026 update confirmed that all four initial panels generated hydrogen under Austin sunlight, and that our system efficiency remains the highest achieved using commercially manufactured solar materials in an integrated outdoor system. It also confirmed that performance did not meet the targets previously achieved in Iowa and validated by Honda R&D, and that the variation was traced to a specific substrate manufacturing process.
More specifically, the findings showed a voltage decrease in the solar substrates that impacted performance, and a coating degradation that allowed water to penetrate the semiconductor layer. We have been working with our manufacturing partner CTF Solar in Germany to address the voltage issue, and we worked with our coating material supplier to address the protection of the semiconductor. We have validated our improvements at lab scale in Iowa and I am glad to report that we have now prepared commercial scale reactors which we will deploy back in Austin next month. We have high confidence in the corrective measures taken. We know this has taken longer than any of us wanted. Thank you for your patience while we worked through these adjustments.
A full performance dataset covering output, efficiency, durability, and consistency will be released once the corrected panels have completed sufficient run time to produce a meaningful and representative set of results. We will not release partial data that could be misread as the full picture
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SunHydrogen Issues Shareholder Letter Addressing Key Questions, source
