Business Briefs for the Week of Oct. 20, 2008

Sioux Center, Iowa-based Interstates Construction Sevices recently opened an office in Casa Grande, Ariz. The new office marks the company's fifth regional office.

Boston-based Riverside Partners recently announced the acquisition and merger of Solar Works, Ontario, Vt., and Solar Wrights, Bristol, R.I., into the largest solar energy integrator in the Northeast. The new company brings together the region's leading designer and installer of commercial solar systems with the region's largest residential solar energy provider.

Pfingsten Partners , Deerfield, Ill., recently acquired Technibus, a Canton, Ohio-based manufacturer of custom-engineered metal enclosed bus duct products for the power generation, petrochemical, commercial, and industrial markets. The company's products include bar-type bus ducts capable of transmitting power from 600V to 38,000V.