In 2008, ICIS, part of Reed Business Information UK, acquired Heren Energy (now ICIS Heren). Patrick Heren originally founded Heren Energy in 1993, with the aim of providing independent price assessments and indices for the wholesale gas and power markets. These impartial gas and power indicators soon became industry benchmarks, used extensively throughout Britain and Europe for short- and long term contracts.

The company is highly regarded for its integrity, reliability and editorial excellence. The authoritative multilingual reporting staff deploy their knowledge across the wider commercial, economic, regulatory and legal spectrum, providing a rich analysis of trends that define the energy marketplace.

ICIS Heren's long experience and deep knowledge of the energy marketplace underpins the company's leadership in gas, power and carbon publishing.