Executive Team

Arun Narayanan

Chief Executive Officer

As Stem’s Chief Executive Officer, Arun Narayanan leads the company’s software-forward vision to drive growth and deliver exceptional, software-driven value to our customers. Arun is a seasoned business and digital leader with over 27 years of in software technology, operations, data and analytics across industries, including oil and gas and renewable energy. He comes to Stem having served as the CEO at RES Digital Solutions, a global independent renewable energy company where he oversaw innovation, and the creation of software products and solutions designed to accelerate the digital journey for renewables. Previously, Arun was the Chief Data Officer of Anglo American where he led the digital strategy to build their data analytics platform, VOXEL and was with Schlumberger for more than 21 years focused on building and executing the best-in-class software for the oil and gas market. Arun holds a bachelor’s degree from the University of Mumbai, a master’s degree in computer science from Iowa State University of Science and Technology, and MBA’s from both the University of Houston and the University of Texas at Austin.

Taylor Beeninga

Chief Human Resources Officer

Taylor Beeninga serves as Stem’s Chief Human Resources Officer. Taylor, who joined Stem in February 2024 as Human Resources Director, has quickly made a significant impact by spearheading several transformative HR initiatives that have strengthened the company’s talent strategy and organizational culture. With over a decade of experience leading HR strategy at Amazon, Taylor brings a wealth of expertise in human resources management, specializing in workforce development, employee engagement, and strategic talent acquisition. Taylor’s appointment to the ELT underscores Stem’s commitment to fostering a dynamic and inclusive workplace, and she is poised to drive meaningful progress in aligning HR strategies with the company’s long-term vision.

Michael Carlson

President, Managed Services & OEM Hardware

As Stem’s President, Managed Services & OEM Hardware, Michael Carlson manages the company’s day-to-day operations, program execution, deployment, and manufacturing. A global business executive, Michael brings 30 years of experience in finance, technology, and operations management across multiple industries and specifically 20 years of energy expertise in leveraging technology to drive value through business transformation and grid modernization. Prior to joining Stem, Michael served as Vice President at Koch Engineered Solutions, where he defined and executed the Electric Technologies strategy with an emphasis on Operational Technology software solutions. He also spent more than 12 years at General Electric, Siemens, and ABB, where he was responsible for global software strategies and solutions, product management, and delivery services. Across these roles, he transformed software solutions using advanced technologies to digitalize operations for the energy grid. Michael holds a B.S. in Business Administration with emphases in accounting, management, and computer science from Union College and an MBA in Finance from Pepperdine University.

Saul Laureles

Chief Legal Officer & Secretary

Saul Laureles serves as Stem’s Chief Legal Officer & Corporate Secretary. In this role, Saul leads the company’s global legal function, including corporate governance, securities and mergers & acquisitions (M&A), as well as environmental, social, and governance compliance. Saul brings more than 20 years of legal and strategic business experience including handling complex legal and financial matters and advising executives and board members. Before joining Stem, Saul served as Director, Corporate Legal Affairs and Assistant Corporate Secretary at Schlumberger Limited, the world’s leading oilfield services company, which he joined in 2007. Saul earned his J.D. from the University of Michigan Law School and B.A. from the University of Chicago.

Tatjana Legans

VP, Marketing & New Businesses

Tatjana Legans is a seasoned energy technology professional with an accomplished career spent driving growth, innovation, and market leadership across the energy transition landscape. She joined STEM in April 2024, bringing deep strategic expertise in marketing, product positioning, and new business development honed through years of leadership roles in energy technology and clean energy solutions.

In her expanded role as Vice President of Marketing & New Businesses, Tatjana leads the company’s marketing strategy and go-to-market initiatives while spearheading efforts to identify and accelerate new growth opportunities that expand STEM’s influence and commercial footprint. She is committed to scaling Stem’s impact, advancing innovation, and unlocking new lines of business across evolving energy markets.

Tatjana earned her BS in Finance and Economics and her MBA from Eastern Washington University.

Ryan McCool

Chief Technology Officer

As the Chief Technology Officer, Ryan McCool defines and executes Stem’s technology strategy, ensuring alignment between product vision and engineering execution. Ryan leads the software and infrastructure teams, driving innovation, scalability, and operational excellence in support of Stem’s mission to optimize energy solutions in the solar and storage industry. A technology executive with over 20 years of experience, he has successfully developed industrial software products and corporate technology strategies. Prior to joining Stem in May 2025, Ryan served as the Global Director of Digital Product Development at FLSmidth, where he successfully led the consolidation and growth of a product development organization focused on software and industrial process optimization. He has a track record of transforming traditional on-premise software to cutting-edge multi-tenant SaaS solutions, leading teams across different regions, including Asia, Europe, Australia, South America, and North America. He has worked with established corporations and emerging R&D divisions and has learned and shared the best practices from each. Ryan is poised to play a pivotal role in driving Stem’s ongoing evolution.

Brian Musfeldt

Chief Financial Officer

As Stem’s Chief Financial Officer, Brian Musfeldt manages the company’s corporate and project financing efforts. He is a seasoned executive with nearly 30 years of finance and management experience, providing leadership in strategy and operational efficiency in the clean technology and energy industries. Brian returns to Stem after having served as CFO of AlsoEnergy from 2017 to 2023, an instrumental player in AlsoEnergy’s sale to Stem in 2022.

Brian recently served as CFO of ikeGPS, a platform technology company supporting above ground grid resiliency and capacity expansion for utilities, where he led its financial strategy through increasingly stringent requirements for utility grid compliance. He has also served as CFO at MST Global Inc, an industrial network and software provider for mining and other critical infrastructure companies.

Brian began his career as a certified public accountant, with six years at KPMG / Arthur Anderson as an audit manager focused on the high-tech and manufacturing sectors. He earned his MBA from Colorado State University.

Kevin Smart

SVP Sales

As Stem’s Sr. Vice President of Sales for the Software Division, Kevin leads Stem’s global sales, technical sales engineering, and customer success. His leadership focuses on training teams in North America, Europe, India, and Japan to build long-standing, trusted customer relationships.

Kevin has served in sales leadership roles with over 27 years of experience in the renewable energy and software industries. Kevin joined Stem as part of its 2022 acquisition of AlsoEnergy, where he served as the Vice President of Sales and Marketing. In that role, he helped establish PowerTrack as an industry-leading SaaS platform for the monitoring and control of renewable energy assets.

Prior to joining AlsoEnergy, Kevin held various sales leadership and alliances roles at CEC Greatwall, Satcon, HP, Informatica, Sybase and Arthur Anderson.

Kevin earned a bachelor’s degree from Alma College and his MBA and J.D. from Willamette University and Willamette University School of Law.

Matt Tappin

President, Software Products

Matt Tappin serves as the President of Stem’s Software Division. In this role, Matt oversees all of Stem’s software and solar efforts, focusing on asset management, economic optimization and edge devices for energy storage and solar assets. Matt joined Stem as it became a public company in 2021 to lead corporate development, overseeing the company’s inorganic growth strategy, including mergers and acquisitions (M&A), investments, joint ventures, and related matters. Prior to joining Stem, he held senior corporate development positions at Royal Dutch Shell, where he focused on investments in the electricity sector, and Centrica, where he led corporate development for the distributed energy business globally. Earlier in his career, he was an investment banker in Lazard’s Power, Energy & Infrastructure Group and a corporate attorney at Simpson Thacher & Bartlett. Matt earned his J.D. from Duke University School of Law and B.A. from Washington University in St. Louis.