Day4 began working with NSP in early 2010 to further deepen its PV cell supply, according to the company.

The company said that after several months of co-operation, both organizations determined it would be mutually beneficial to establish an official arrangement to cover the upcoming year.

Day4 Energy president George Rubin said that the confirmed co-operation from NSP strengthens Day4’s cell supply through 2011 ensuring both Day4 Energy, as well as its Day4 solarSYSTEMS manufacturing franchise partners, have everything required to be successful.

"We look forward to expanding on the foundation of successful cooperation we have put in place during the past year with NSP," Rubin said.