This paragraph explains why I do not place much short term hope...

This paragraph explains why I do not place much short term hope in the Pilkington deal and am focussed only on Tata Steel.

"DyeTecs technology is designed to utilise optimised Transparent Conductive Oxide (TCO) glass and Dye Solar Cell (DSC) materials manufactured by the JV partners, and enables downstream suppliers in the glass market to mass produce high performing DSC TCO glass based products for use in BIPV, BAPV and AIPV environments. Initial DyeTec efforts will result in the development of prototype DSC based BIPV glass panels and related equipment sets, laying the foundation for future high volume manufacturing capability."

They are working on the processes and machines, not the consumer product. So when they are done, they still won't have a product to sell to consumers, they will need to go find "downstream suppliers" who want to take the risk.
Tata Steel is so much closer to realisation.