Our Partners

Green Tech Mining & Services


Green Tech Mining & Services LLC (GTMS) was specifically established by the government as a Special Purpose Vehicle (SPV) for the mere purpose of introducing innovative and green mining waste remediation technologies to the Sultanate of Oman.  The Joint Venture was formed in 2018 by the state owned Oman Mining Company LLC (OMCO) together with the region’s premier partner in new green technology solutions-  Gulf Green Tech LLC (GGT) to tackle the resource development of the country.

GTMS focus on remediating the contaminated mining sites in the country with the aim to deliver our promise of restoring the surrounding environment to its original state. It is our duty as a team and as experts in the industry to make a change and make a difference. Green Tech Mining & Services not only aims to restore the environment to a safe and liveable landscape, but actually turning the disregarded waste sites into valuable assets for the Sultanate of Oman.

Our Vision is to become the preferred partner for environmental, sustainable, and profitable mining waste remediation whilst creating a “Green” mining industry in the country.

Gulf Green Tech LLC & Services


Gulf Green Tech is a solar energy provider and renewable energy promoter based in Muscat, Oman. Our founders have been instrumental in pioneering grid-connected solar photovoltaic technologies domestically and we aim to become a trusted strategic partner for our clients. We have a strong focus on delivering high-quality products and services while advocating for value-adding activities, employment and career advancement opportunities in the Sultanate of Oman. Our vision goes beyond the design, installation and maintenance of renewable energy systems. We want to partner with clients to promote clean technology and development while providing significant energy savings and carbon footprint reduction. Gulf Green Tech – The region’s premier partner in renewable energy solutions



Ernst Grissemann

CEO & Chairman

Klaus Müller

Chief Technology Officer & Board Member


Member of Tanfeedh Mining Lab and Former C-Level executive in worldwide leading environmental services providers.

International recognized adviser in engineering standards consolidation. 


Built the PDO Nimr Water Treatment Plant in Oman.


Awarded with Global Water Award 2011.

Shell Regional Technology Manager Middle East and North Africa (2010 – 2013)

Shell Global Technology Manager Joint Ventures (2013 – 2016)


MSc in Petroleum Engineering at Mining University Leoben, Austria.