'Bubble wrap' window coating could save huge amounts of energy worldwide

Researchers at the University of Colorado Boulder have developed MOCHI (Mesoporous Optically Clear Heat Insulator), a silicone-based, air-filled gel that achieves >90% porosity while reflecting only ~0.2% of incoming light; a 5 mm sheet demonstrated strong thermal insulation in lab tests by blocking heat transfer without blurring visibility. By engineering nanoscale pore networks that suppress gas-phase heat conduction while minimizing light scattering, MOCHI promises a thin-film retrofit for glazing that could materially reduce building heating and cooling loads (buildings account for roughly 40% of global energy use), ease peak electricity demand and enable passive solar heat capture, provided it can be produced at scale. The technology is currently lab-scale and time‑intensive to fabricate, but uses common, inexpensive ingredients and a stable silicone matrix; commercialization will hinge on scaling, manufacturing speed, climate-specific optimization and long‑term durability testing (study published in Science).

Analysis

University of Colorado Boulder researchers have developed MOCHI (Mesoporous Optically Clear Heat Insulator), a silicone-based gel that achieves more than 90% porosity while reflecting only about 0.2% of incoming light; a 5 mm lab-scale sheet demonstrated strong thermal insulation in an experiment where a flame could be held over a palm without noticeable burning, and the study is published in Science. The team engineers a nanoscale pore network by templating with surfactants and replacing them with air, producing tiny channels that suppress gas-phase heat conduction because molecules collide with pore walls rather than each other, yielding aerogel-like thermal performance without the usual haze. The primary commercial opportunity is retrofit and new-construction glazing: thin-film application could reduce heating and cooling loads (relevant given buildings account for roughly 40% of global energy use), enable passive solar heat capture on cloudy days, and help flatten peak electricity demand. Key commercialization risks are explicit in the article: MOCHI is currently time-intensive and lab-scale, requires scaling into a continuous, repeatable manufacturing process, climate-specific pore optimization, and long-term field durability proof, although ingredients are common, relatively inexpensive, and the silicone matrix is chemically stable.

Key Decisions for Investors

• Monitor CU Boulder commercialization signals and any spinout or licensing deals closely, as successful pilot-scale production would be a clear inflection for building-material and glazing equities
• Prefer companies with existing large-area glazing manufacturing, lamination capabilities, or retrofit distribution channels for potential early partnerships, while evaluating supplier exposure to silicone and coating-process equipment
• Defer large directional allocations until published field durability, per-square-meter cost, and climate-optimized performance data are available; consider staged or option-like exposure to limit downside given current lab-scale status