Item 7.01. Regulation FD Disclosure. On January 6, 2026, Tecogen Inc., a Delaware corporation(“ Company”), posted on LinkedIn a note regarding the applications and benefits of using Tecogen natural gas and hybrid chillers for data centers as well as a note on its website at www. Tecogen. com in the section identified as “ Investors/Presentations” a document entitled “ Frequently Asked Questions - The Future of Data Center Cooling,” a copy of which appears below.