World Sales of Solar Cells Jump 32 Percent

Eco-Economy Indicators 2004: :

There've been indications of this and here are the stats. One thing in addition caught my attention:

"While the off-grid sector was the initial major market for solar cells, the grid-connected sector has grown significantly since 1996, after the implementation of the 70,000 Roofs Program in Japan. In 2003, the grid-connected sector represented 77 percent of the total market worldwide."