Electrical supply marketing groups Equity/EDN Marketing Group, Concord, OH, and IMARK Group have joined as of Jan. 1, 2009.

The combination of IMARK / Equity/EDN creates an organization with an 18% market share in the electrical supply industry, according to a press release, with combined revenues approaching $15 billion.  The groups say that greater economies of scale will provide members with lowered operating costs, improved member returns, and added economic value for new and existing IMARK/Equity/EDN Members.

According to its Web site, IMARK is a member-owned marketing group with 176 independent electrical distributors in the U.S., including more than 70 distributors that rank in the top 200 in the country. IMARK distributors have more than …