as noted today in lulu's post Epiworks further expanded their volume production capacity in March 2014......I wonder what their capacity is today?

The report below is from 2010, regarding expansion of their production capacity.

Epitaxial wafer house EpiWorks has finished the second phase of the expansion of its Champaign, IL, production facility. The company, which now has a solar-cell wafer product line, has doubled its cleanroom space for III-V semiconductor substrate manufacturing.

EpiWorks provides 4- and 6-inch wafers to the wireless and solar industry as well as 2-, 3-, 4-, and 6-inch substrates to the semiconductor laser and detector industry. The phase II expansion provides enough cleanroom space for EpiWorks to produce more than 200,000 6-inch wafers per year at the facility, according to the company.

"We have carefully planned the additional cleanroom space and production capacity with customers to ensure that EpiWorks continues to stay ahead of demand," said David Ahmari, the company's executive VP. "With the new cleanroom online, the additional wall-to-wall capacity also enhances our ability to quickly add more production tools and provides greater flexibility for new product development."

http://www.mcilvainecompany.com/industryforecast/semiconductor/updates/2010%20updates/jan2010update.htm