SunPower, a company owned by NYSE listed Cypress Semiconductor Corp is planning an IPO on the Nasdaq in Q4 2005.

The filing provides for an offering of up to $100 million of common stock, plus an option granted to the underwriters to purchase up to an additional $15 million to cover over-allotments.

And according to this article, there are quite a few other solar companies also interested in IPOs - QCells,  ErSol Solar Energy AG and sources at wafer maker PV Crystalox Solar AG and component and systems maker Renewable Energy Corp AS (REC) all said they were considering listing in Europe.