Enefit’s Utah Team

Rikki Hrenko-Browning

Chief Executive Officer, Enefit American Oil

Ms. Hrenko-Browning leads the Enefit American Oil team and is based in the Salt Lake City office. Prior to that she was a Project Director in Enefit (Eesti Energia) working on international shale oil development projects. Ms. Hrenko-Browning graduated with Distinction from Carnegie Mellon University and holds an M. Sc. in Environmental Policy and Management.


Ryan Clerico

Head of Development and Environment, Enefit American Oil

Mr. Clerico is in charge of obtaining and managing all permit applications and permits applicable to the project (exploration, mining, processing, air, water and overall environment), including overseeing and maintaining monitoring plans and field studies and the development and execution of any mitigation and compliance programs.


Nathan Davis

Chemical Process Engineer, Enefit American Oil

Mr. Davis is a chemical engineer with experience in oil and gas, oil sands and hard rock mineral processing. He has managed projects including design of new industrial plants, redesign and automation of existing facilities, and laboratory and in-field pilot testing of various unit operations towards development of new processes.


Michelle Faulk

Accountant and Office Manager, Enefit American Oil

Ms. Faulk is an experienced office manager, who is responsible for a accounting, contract management and office management in Enefit American Oil´s office in Salt Lake City.



Indrek Aarna

Head of Research and Development, Enefit

Dr. Aarna is responsible for design and development of the Enefit retorting technology for all Enefit shale oil development projects, in Estonia and abroad. He is a Board Member of Enefit Outotec Technologies and holds a PhD in Chemistry from Brown University.


Erkki Kaisla

Mining Development Manager, Enefit

Mr. Kaisla is a mining engineer with over 15 years of experience responsible for all mine development projects in Enefit, in Estonia and abroad.



Kaido Kaarli

Financial Controller, Enefit

Mr. Kaarli manages all finance functions in Enefit´s international projects in Utah, Jordan and Germany. Mr. Kaarli has over 10 years of experience in finance management, has graduated from Emory University and holds an MBA in Business Management.