Our Team

Christian Wentzel


Christian is the co-founder and chairman of Solar Provider Group. In his career in the solar industry, Christian’s companies have built and interconnected more than 300 large-scale projects in the US, Canada and across Europe. In his prior career in the traditional energy world, Christian has arranged or participated in more than $5 billion of investments. Prior to founding Solar Provider Group, Christian worked for Traxis Partners, Goldman Sachs in the Power Group, and for Credit Suisse in Energy M&A, all in New York City. Christian is a CFA charter holder and has an MBA from the London Business School as well as a BA in Economics from Columbia University.

Sebastian Seyfarth


Sebastian is the co-founder and CEO of Solar Provider Group. Throughout his career he has been involved in the construction and development of solar PV facilities totalling more than 100MW of installed generation capacity. With SPG, Sebastian has positioned the company to construct approximately 50+ MW of ground mount and 20+ MW of rooftop projects in 2016 throughout Canada, US and UK. Sebastian has a Bachelor in Business Administration from the Munich School of Management.

Steve Kiesling


Steve Kiesling serves as Chief Financial Officer of Solar Provider Group. Holding a broad range of experience, Steve excels in understanding client, company, and situational needs to create effective solutions. Prior to his current role, Steve served as Executive Vice President for Sunstarter Solar, spearheading its development in the residential solar space. Earlier in his career, he worked as an analyst covering investments in energy, natural gas, private equity, and public equities. Steve graduated magna cum laude with a B.S. in Finance and Economics from Tulane University and graduated with an MBA from the University of California, Los Angeles.

Kumar Thottupurath

Staff Accountant

Kumar co-ordinates all of SPG’s finances. Prior to joining the group, Kumar was part of a major business house in the Middle East and has gained over 20 years of experience. He has played major roles in Accounting, Finance and Taxation. Kumar worked in Dubai and Hong Kong before moving to Toronto. In Hong Kong he was a key team player in setting up a start-up venture as part of the ME business house. In Canada he learned Canadian taxes and specializes in corporate tax and now focuses on international taxes. Kumar is a Commerce graduate and also holds MBA from University of Northern IOWA.

Kumar says “there is a scope for potential saving in every transaction, if you look for it”.

AJ Kiani

Vice President, Global Operations

AJ is Vice President of Global Operations at Solar Provider Group. He has over 15 years of construction experience, with 8 years in solar energy and various other renewable technologies. AJ has amassed an impressive portfolio of projects built to date and has been crucial in the development of Solar Provider Group as a global entity. He comes from a background in Mechanical Engineering Technology, Business Administration, and Construction Project Management.

Jason Chiang

Director of Business Development (U.S. & Asia)

Jason Chiang serves as the Director of Business Development at Solar Provider Group, responsible for driving the company’s strategy and market development activities in the U.S. and Asia. Since joining Solar Provider Group, Jason has successfully built multiple solar markets and worked with various small to large enterprises and non-profits in developing customized solar solutions with streamlined contract offerings and financing. Prior to joining Solar Provider Group, Jason worked at BAE Systems, responsible for identifying, developing and winning over $100 million U.S. and foreign government contracts. Jason holds a BE in Electrical Engineering from Stony Brook University and an MBA from St. John’s University.

Kent Au

Director of Project Management

Kent has a background in Architectural Technology and has worked in various architectural firms prior to joining Solar Provider Group in 2012. His experience in building construction aided in Kent’s seamless transition into the rooftop solar industry. He has managed over 10 MW of Ontario FIT projects and has worked on various projects in California and United Kingdom. As a result of experience, Kent has been a key player in all phases of the project life cycle and has obtained expertise in solar engineering, procurement and construction.

Michal Tvrdon

Project Development Manager

Natalie Zavaglia

Human Resources Manager & Talent Coach

Patrick Collie

Project Manager

Alexander Creem

Energy Consultant

Carl-Niklas Wentzel

Director, UK Solar Provider

Paul Green

Project Engineer

Tom Helliwell

Business Development Consultant

Pete Kleckowski

Project Coordinator

Devin Le Drew

Construction Manager

Chris Mavity

Project Manager

Peter McMurtry

Project Developer

Provas Mondal

Project Engineer

Lucas Redrup

Project Engineer

Andrew Ross

Project Developer

Paul MacDonald

Site Foreman

Blaire Stewart

Business Development & Marketing Manager

Jacky Tran

Project Developer


Contact Us


  • Canada
    1 Atlantic Avenue, Suite 105,
    Toronto, ON, M6K 3E7
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  • United States
    5657 Wilshire Blvd, Suite 310,
    Los Angeles, CA 90036
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  • United Kingdom
    Vine Farm, Wendy,
    Royston, SG8 0HJ  +447718985615
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  • Germany
    Teutschenthal, Germany
    Carl-Wentzel-Straße 30
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