Polysolar was displaying his invention at the French Fair on Parker's Piece, close to the main shopping streets.
Now, if I got it correctly, Polysolar is a new type of photovoltaic panel which is formed by etching the power-generating circuits into a sheet of glass, and then sandwiching it between two more sheets. Compared with the crystalline PV panels which dominate the industry, its dead simple and therefore potentially very cheap. It produces less power than conventional PV but it has the potential to be used as a roofing material or as a facade. Building Integrated PV, or BIPV. There's a new acronym for you.
They have already completed several installations in Taiwan and China, but they now have sorted MCS accreditation and are ready to hit the UK, as it's all eligible for the feed-in tariff.
And I only went there to get a baguette for breakfast.