Our Leadership Team
Jerry Isbell
Jerry Isbell
Jerry Isbell
Jerry Isbell, Co-Founder of Global Power Solutions LLC, has extensive experience in project management, facility operations, and energy storage systems. Previously Associate Director of North America at Sungrow, he led service teams and improved commissioning and customer support. Jerry’s background includes construction management and te
Jerry Isbell, Co-Founder of Global Power Solutions LLC, has extensive experience in project management, facility operations, and energy storage systems. Previously Associate Director of North America at Sungrow, he led service teams and improved commissioning and customer support. Jerry’s background includes construction management and technology roles at Gehan Homes and the City of San Antonio. A Certified Scrum Master and OSHA 30 practitioner, he holds an Associate of Arts in Computer Networking and brings strong operational expertise to Global Power Solutions.
Lee Maddox
Jerry Isbell
Jerry Isbell
Lee Maddox, Co-Founder of Global Power Solutions, is a Certified Risk Manager with decades of experience in risk management, power generation, and operations. He spent 14 years as Vice President at a commercial insurance agency, specializing in oil and gas accounts with revenues over $10 million. He later co-founded a power generation com
Lee Maddox, Co-Founder of Global Power Solutions, is a Certified Risk Manager with decades of experience in risk management, power generation, and operations. He spent 14 years as Vice President at a commercial insurance agency, specializing in oil and gas accounts with revenues over $10 million. He later co-founded a power generation company using stranded natural gas and served as COO of a public water reclamation and civil construction firm, scaling it to 200 employees and $24 million in revenue. Maddox also founded Clarity Power Solutions, which merged with Global Power Solutions, where he now focuses on growing its leadership in solar inverter and battery services.
Ernest Lira
Donna M. Galaretta
Donna M. Galaretta
Ernest Lira, Co-Founder of Global Power Solutions LLC, is an experienced leader in energy solutions. Before co-founding the company, he served as Senior Field Service Manager for PV and BESS at Sungrow North America, where his team was recognized as Sungrow's top global service team for two consecutive years. He also led PV field service
Ernest Lira, Co-Founder of Global Power Solutions LLC, is an experienced leader in energy solutions. Before co-founding the company, he served as Senior Field Service Manager for PV and BESS at Sungrow North America, where his team was recognized as Sungrow's top global service team for two consecutive years. He also led PV field service teams across North and Latin America.
Earlier in his career, Ernest held key roles at US Well Services, HOLT CAT, and KACO New Energy, with a focus on operations and expense management. He began as an Electronics Technician III at Schlumberger, building his technical foundation. His leadership and commitment to innovation continue to drive success in the energy sector.
Donna M. Galaretta
Donna M. Galaretta
Donna M. Galaretta
Donna M. Galarreta, Chief Financial Officer of Global Power Solutions, LLC is a Certified Public Accountant and holds a Bachelor of Science in Accounting. She is responsible for the finance, accounting, tax and human resource functions. She oversees the financial health of the organization, compliance with the tax obligations for the or
Donna M. Galarreta, Chief Financial Officer of Global Power Solutions, LLC is a Certified Public Accountant and holds a Bachelor of Science in Accounting. She is responsible for the finance, accounting, tax and human resource functions. She oversees the financial health of the organization, compliance with the tax obligations for the organization, ensures the organization’s day-to-day activities run smoothly and efficiently. Donna has over 20 years in finance and operational management of multimillion organizations.