Hoku Scientific Inc., the Kapolei-based clean energy technology company, may soon be moving.

The company said it has an agreement to sell its 14,000 square-foot facility at Campbell Industrial Park to the Operating Engineers Local Union No. 3, pending a number of contingencies, including the union selling its building in Honolulu.

Hoku last year said it was exploring a sale of its headquarters, manufacturing and research facility, along with the 99,000 square feet of land it sits on. Hoku said it will disclose terms of the transaction when it announces its quarterly financial report later this week.