HelioSkin, Cornell's solar fabric

Researchers at Cornell and Arizona State University are developing HelioSkin, a lightweight, stretchable, 3D-printed solar fabric inspired by heliotropism, for canopies and facades. The DW video notes it has not yet been tested in the field.

According to the Cornell Chronicle of 20 Feb 2025, the project received US$650,000 in NSF Phase I and applied for US$5 million for Phase II. The bar is high: an NREL review of 27 Sep 2012, with 2,128 measured rates, found median module degradation of 0.5% per year.

A folding surface is likely to add mechanical wear to solar wear, and that weighs on the residual value of a facade asset. Without field data, its likely use is where rigid panels do not fit.

The advance is bringing generation to unused surfaces. The evidence that matters now is degradation measured in the field, year after year.