Great Circle Solar Management Corporation

A Leading North American Solar Platform

$3 billion+
in operating
solar assets

Full lifecycle asset creation & operation

50+ active development projects across all major North American solar markets

Premier list of counterparties, lenders & investors

Solar rooftop, BESS, utility scale ground mount & hosted Back Up Power

What We Do

Solar Asset
Management

As our core business, we seek to align our business model and profit purpose 100% with our clients’. Acting on a direct fiduciary basis for the special purpose vehicles of our investor clients, we support the technical, commercial operation, risk management, and regulatory needs of investment and to focus on all elements of asset optimization and return realization.

Solar Asset
Development

Great Circle Solar brings everything needed for asset creation and ownership in the growing Distributed solar and BESS sector in North America.

We can deploy our capital, or yours, or invest together.

We excel at portfolio triage and full development management for new builds & existing buildings.

Our work include technological suitability screening, economic viability, ESG advisory services, navigating jurisdictional renewable energy credit or tax incentive programs, system sizing and design, contractor and equipment RFP administration, construction project coordination and management, securing interconnection with local utilities, power offtake negotiations with tenants, and more, to optimize our clients’ specific development and investment needs.

Other Distributed Energy Resources and Storage

Under the banner of our affiliate, Great Circle Power Corp, we offer bespoke energy management solutions to our clients’ need for on-site, infrastructure connected emergency back-up power and energy storage. We work with our clients to understand their energy requirements, and offer services in support of the procurement, contracting, acceptance and commissioning of the appropriate energy solution for their facilities.

Our Team

Leadership Continuity: Our senior team has worked together for 10+ years

Clarke Herring,
Founder &
CEO

Clarke founded GCS in 2010 and has seen the firm grow to the point where it now manages approximately $3 billion in rooftop, ground mount utility-scale solar assets and other distributed generation assets. Clarke holds a Masters in Philosophy from Cambridge University and an HBA (with distinction) from Western University’s Richard Ivey School of Business.

Karen Wharton, CA, CFA, MBA
Director of Commercial

Karen, with GCS since 2010, leads the commercial group, focusing on power generation and real estate. Her role involves client mandates, business evaluations, negotiations, and deal structuring. She is a Chartered Accountant, Chartered Financial Analyst, and has an MBA from the University of Toronto.

Robert Barkley, P.Eng, MBA
Director of Operations

Bob, active in renewable energy since 2006 and part of GCS since 2013, oversees operations and technical oversight for solar and DER portfolios. He has a broad expertise in development, construction, and operations, holds a Professional Engineers of Ontario registration, and an MBA from Western University's Ivey School of Business.

Cathy Harris,
Dirctor of Client Financial Reporting

Cathy joined GCS in 2014 and heads our team of Financial Analysts and Project Accountants. Alongside our Asset Management Associates, she ensures clients receive accurate financial deliverables on time and in line with relevant credit agreements. She manages the audits for all our clients’ entities and is responsible for all account management services.

Clarke Herring,
Founder &
CEO

Clarke founded GCS in 2010 and has seen the firm grow to the point where it now manages approximately $3 billion in rooftop, ground mount utility-scale solar assets and other distributed generation assets. Clarke holds a Masters in Philosophy from Cambridge University and an HBA (with distinction) from Western University’s Richard Ivey School of Business.

Karen Wharton, CA, CFA, MBA
Director of Commercial

Karen, with GCS since 2010, leads the commercial group, focusing on power generation and real estate. Her role involves client mandates, business evaluations, negotiations, and deal structuring. She is a Chartered Accountant, Chartered Financial Analyst, and has an MBA from the University of Toronto.

Robert Barkley, P.Eng, MBA
Director of Operations

Bob, active in renewable energy since 2006 and part of GCS since 2013, oversees operations and technical oversight for solar and DER portfolios. He has a broad expertise in development, construction, and operations, holds a Professional Engineers of Ontario registration, and an MBA from Western University's Ivey School of Business.

Cathy Harris,
Director of Client Financial Reporting

Cathy joined GCS in 2014 and heads our team of Financial Analysts and Project Accountants. Alongside our Asset Management Associates, she ensures clients receive accurate financial deliverables on time and in line with relevant credit agreements. She manages the audits for all our clients’ entities and is responsible for all account management services.

Commercial Team

Andrew Cimino,
Senior Asset Management Associate

Andrew has been with GCS since 2019, serving as the main coordinator for the management of certain development and operational projects. He supports daily interactions with stakeholders including term lenders, developers, EPC providers, landowners, insurance providers, and oversees system monitoring and operations.

Melanie Warnock,
Senior Project Administrator

Melanie has been with GCS since 2013, overseeing the team's daily operations and facilitating inter-departmental communication. She plays a pivotal role in developing the firm's Distributed Energy Resources (DERs), ensuring project compliance with agreements, permits, and regulations, and addressing unexpected challenges.

Saphren Gill,
Asset Management Associate

Saphren joined GCS in 2023 after graduating from Queen’s Smith School of Business. She assists the commercial team’s senior leadership on our development and operating projects.

Connor Chapman,
Asset Management Associate

Connor joined GCS in 2023 after graduating from Ivey School of Business. He assists the commercial team’s senior leadership on our development and operating projects.

Andrew Cimino,
Senior Asset Management Associate

Andrew has worked at GCS since 2019, coordinating key development and operational projects. He manages daily communications with stakeholders such as term lenders, developers, EPC providers, and landowners, and supervises system monitoring and operations.

Melanie Warnock,
Senior Project Administrator

Melanie has been with GCS since 2013, overseeing the team's daily operations and facilitating inter-departmental communication. She plays a pivotal role in developing the firm's Distributed Energy Resources (DERs), ensuring project compliance with agreements, permits, and regulations, and addressing unexpected challenges.

Saphren Gill,
Asset Management Associate

Saphren joined GCS in 2023 after graduating from Queen’s Smith School of Business. She assists the commercial team’s senior leadership on our development and operating projects.

Connor Chapman,
Asset Management Associate

Connor joined GCS in 2023 after graduating from Ivey School of Business. He assists the commercial team’s senior leadership on our development and operating projects.

Operations Team

Mitch Gorman,P.Eng
Senior Project Engineer

Mitch is a Professional Engineer that has been with GCS since 2015. He brings 20 years of experience in Project Management and Engineering in the fields of solar power, distributed energy, energy efficiency and hydraulics to his work with GCS.

Charl De Reuck,P. Eng
Project Engineer

Charl is a Professional Engineer with 10 years of project management/development, and engineering practice in the fields of solar power, structural engineering, and civil engineering across a wide range of sectors. He specializes in triaging, developing and managing solar projects from conception to commercial operation.

Jerick Astejada,
Journeyman Electrician (309A Certification)
Senior Operations Manager

Jerick joined the Great Circle team in 2014 and has been specializing photovoltaics power generation since 2007. He oversees system monitoring, operational reporting, conducts inspections, and manages each site’s spare parts procurement in coordination with, or separately from the O&M provider.

Deonnie Macabales,
Operations Manager

Deonnie has been active in the solar energy sector since 2013 and is responsible for daily performance monitoring via SCADA. From the Great Circle operations centre, Deonnie remotely monitors over 100 sites every day to help identify any potential performance issues and to proactively inform O&M contract providers of any system Issues.

Mitch Gorman, P.Eng
Senior Project Engineer

Mitch is a Professional Engineer that has been with GCS since 2015. He brings 20 years of experience in Project Management and Engineering in the fields of solar power, distributed energy, energy efficiency and hydraulics to his work with GCS.

Charl De Reuck,P. Eng
Project Engineer

Charl is a Professional Engineer with 10 years of project management/development, and engineering practice in the fields of solar power, structural engineering, and civil engineering across a wide range of sectors. He specializes in triaging, developing and managing solar projects from conception to commercial operation.

Jerick Astejada,
Journeyman Electrician (309A Certification)
Manager of Operations

Jerick joined the Great Circle team in 2014 and has been specializing photovoltaics power generation since 2007. He oversees system monitoring, operational reporting, conducts inspections, and manages each site’s spare parts procurement in coordination with, or separately from the O&M provider.

Deonnie Macabales,
Operations Manager

Deonnie has been active in the solar energy sector since 2013 and is responsible for daily performance monitoring via SCADA. From the Great Circle operations centre, Deonnie remotely monitors over 100 sites every day to help identify any potential performance issues and to proactively inform O&M contract providers of any system Issues.

Mark Vinarao,
Operations Analyst

Mark works with the Operations Team tasked to perform daily system checks to optimize performance and minimize downtime.

Johanna Pineres,
Project Manager​

Johanna joined the Operations team in 2020 and manages the interconnection, procurement and construction aspects of most of GCS’s US development projects. She has a background in Industrial Engineering and Project Management.

Chris Byron,
Project Manager– Great Circle Power​

Chris has been with the firm since 2017 building out and maintaining our fleet of DERs for back up power, and peak shaving. He’s often on the road ensuring all our assets are providing peak performance.

Hanna Dimatatac,
Project Manager, O&M

Hanna joined the GCS team in 2023 and handles the deployment of Operations & Maintenance contractors and ensures compliance with our Health & Safety policies.

Mark Vinarao,
Operations Analyst

Mark works with the Operations Team tasked to perform daily system checks to optimize performance and minimize downtime.

Johanna Pineres,
Project Manager​

Johanna joined the Operations team in 2020 and manages the interconnection, procurement and construction aspects of most of GCS’s US development projects. She has a background in Industrial Engineering and Project Management.

Chris Byron,
Project Manager
Great Circle Power​

Chris has been with the firm since 2017 building out and maintaining our fleet of DERs for back up power, and peak shaving. He’s often on the road ensuring all our assets are providing peak performance.

Hanna Dimatatac,
Project Manager, O&M

Hanna joined the GCS team in 2023 and handles the deployment of Operations & Maintenance contractors and ensures compliance with our Health & Safety policies.

Accounting/Finance Team

Jocelyn Lumbao, CPA, CGA
Senior Financial Analyst

Jocelyn manages the full-cycle accounting for numerous client entities, prepares ad hoc analysis and performance reports to assist the asset management team, conducts quantitative analysis of financial data, collaborates with external auditors and tax accountants in annual audit and tax return preparation.

Trevor St. Louis,
Senior Financial Analyst

Trevor brings decades of experience in finance and accounting, having worked progressively more senior roles both domestically and overseas.  He has also spent some years working in IT directly supporting accounting users and building and designing systems that interface with accounting systems.

Marynel Samson,
Project Accountant

Since 2016, Marynel has been handling the full-cycle accounting needs of several of our client entities. She brings a deep understanding of our processes and what it takes to keep our clients happy.

Jeremiah Bolima,
Project Accountant​

Jeremiah has been with GCS since 2019, contributing first as a bookkeeper, then as a Project Accountant, supporting our clients’ needs.
Susan Harris, Bookkeeper, Great Circle Solar

Susan Harris,
Bookkeeper

Susan joined the team in 2020 and has wide-ranging responsibilities supporting many of the business entities we manage.

Jocelyn Lumbao, CPA, CGA
Senior Financial Analyst

Jocelyn manages the full-cycle accounting for numerous client entities, prepares ad hoc analysis and performance reports to assist the asset management team, conducts quantitative analysis of financial data, collaborates with external auditors and tax accountants in annual audit and tax return preparation.

Trevor St. Louis,
Senior Financial Analyst

Trevor brings decades of experience in finance and accounting, having worked progressively more senior roles both domestically and overseas.  He has also spent some years working in IT directly supporting accounting users and building and designing systems that interface with accounting systems.

Marynel Samson,
Project Accountant

Since 2016, Marynel has been handling the full-cycle accounting needs of several of our client entities. She brings a deep understanding of our processes and what it takes to keep our clients happy.

Jeremiah Bolima,
Project Accountant​

Jeremiah has been with GCS since 2019, contributing first as a bookkeeper, then as a Project Accountant, supporting our clients’ needs.
Susan Harris, Bookkeeper, Great Circle Solar

Susan Harris,
Bookkeeper

Susan joined the team in 2020 and has wide-ranging responsibilities supporting many of the business entities we manage.

FAQ

A “Great Circle” is the shortest pathway between two points on a sphere. Inspired by this concept, Great Circle Solar provides a direct and efficient route for North American institutional and real estate owners to adopt, host or own Solar and Distributed Energy Resources (DERs).

Not exactly. We manage the whole process of assessing specific sites for suitability, working with clients to create financial models and business cases for the project, designing the system, running RFPs for installation counterparts, overseeing procurement of materials, managing the construction at site and confirming completion and commissioning of the system so it can be safely energized. We engage installation partners to complete the construction of our clients’ solar assets.

Great Circle is prepared to step in at any stage of the development process, however, the earlier you involve our team, the better. Due to our decades plus experience in the solar sector, we know the potential hurdles that developing solar projects will face and can mitigate their impact.  We can also offer different ownership options or structures to optimize a client’s solar program rollout.

We work with our clients to determine their objectives and tailer our work to address their unique needs and priorities. We draw upon our expertise to raise considerations our client might not have otherwise considered. Our firm is wholly-independent and we seek to align our business model and profit purpose 100% with equity. We act on a direct fiduciary basis for the special purpose entities of our investor clients, with a mandate to support the local technical, commercial operation and regulatory compliance of our clients’ investments and to focus on all elements of asset optimization and return realization.

Many of the systems we manage are located in Ontario, Canada. However, we are currently developing sites in New Jersey and California and anticipate building in Alberta in 2024.

Yes! We received our Certificate of Authorization from the Professional Engineers of Ontario in 2023 (100604254).

In addition to standard Commercial and General Liability policies, the firm maintains comprehensive Errors & Omissions coverage in Canada and the United States.

Net metering is a billing method that credits owners of solar energy systems for the surplus electricity they supply to the grid. It involves:

  1. Solar Energy Production: Excess electricity generated by rooftop solar systems during the day is fed back into the grid.
  2. Electricity Metering: A meter records both electricity consumed, and electricity sent to the grid, effectively running backward when excess electricity is produced, crediting the owner.
  3. Billing and Credits: At billing time, the utility company calculates the net electricity usage, crediting or sometimes paying the owner if more electricity was produced than consumed.

The details of net metering can differ based on local regulations and utility policies, impacting the financial benefits and savings from solar energy investments. Some areas offer credits equal to the retail rate of electricity, while others may offer a reduced rate.

Yes, a solar power system offsets power from the grid, which will have a calculated level of carbon intensity depending on the power generation systems in that grid. Since solar power is emissions-free, if the grid has related emissions, solar power will decrease the end-users’ scope 1 emissions (direct greenhouse gas (GHG) emissions that occur from sources that are controlled or owned by an organization). Also, most ESG scorecards give points for buildings with rooftop solar systems, such as the LEED and the WAIRE programs, among others. In short, an investment in a solar system can be an asset to both the company’s finances and addressing climate change.

Partner With Us!

Careers

Great Circle Solar has grown significantly since its founding in 2010. We are always interested in meeting extraordinary people with strong technical, financial, or commercial experience and an interest in solar and distributed generation.

The firm also runs active internship programs for engineering and business students seeking exposure to renewable energy investment and operational management.

Reach us at hr@greatcirclesolar.com

Contact

Head Office Location

330 Bay Street, Suite 1210 

Toronto, Ontario               

Canada, M5H 2S8      

416-365-4227    

Email for General Inquiries

info@greatcirclesolar.com