Over the years, our capabilities have been enhanced by the acquisition of complementary engineering, construction and service firms.  Key to these capabilities is a professional staff with the technical expertise and innovative spirit necessary to offer effective solutions in today's dynamic regulatory and business environments.

Solution-Mined Caverns

Originally formed as a joint venture partnership in 1977 between Parsons Brinckerhoff (PB) and Kavernen Bau und Betriebs-GmbH (KBB) the preeminent German subsurface storage and solution mining technology firm, PB-KBB was incorporated in 1978.

In 1989, PB-KBB gained complementary expertise with the strategic acquisition of Fenix & Scisson, Inc, a firm renowned since 1950 for development of both solution and hard rock mined storage caverns. 

With the acquisition of Underground Technology Group (formerly Sofregaz US) in 2001, PB further consolidated it's position of industry leadership.

In 2002, PB-KBB became a wholly-owned subsidiary of PB and the name was changed to PB Energy Storage Services.

Conventionally Mined Caverns