Unlike most firms in this field, DCfusion has deep experience in the higher voltage DC industry which spans numerous markets and channels. With more than 30 years of combined experience working on higher voltage DC projects alone, DCfusion founders are among the pioneers who first brought the idea of higher voltage DC to the global market’s attention.  Higher voltage systems are now being deployed in many areas around the world. 

Timothy E. Martinson - Co-Founder


Mr. Martinson is an experienced professional with more than 30 years of work developing and deploying value-based engineered system solutions for Fortune 100 Global Power and Control OEMs across the country.  As CEO of DCfusion, Mr. Martinson is responsible for spearheading new business development with industry leaders to establish collaboration between OEM’s, Architects, Design Build Firms, Academia and Government to help bring 380Vdc microgrid applications to the market.

He also chairs the Telecom and Data Center marketing committee of EMerge Alliance, an open industry association leading the rapid adoption of safe DC power distribution in commercial buildings through development of EMerge Alliance standards. For the Society of Telecommunications Engineers (SCTE) Mr. Martinson is the co-chair of the 380V dc Standards Committee, which is applying standards to their Energy 2020 initiative.

Prior to establishing DCfusion, he and Mr. David Geary established the StarLine DC Solutions for Universal Electric Corporation.  Earlier in his career, he held several positions at Direct Power Technologies, Inc. and for 17 years was at Eaton Corporation. His past responsibilities include Industry Manager, Segment Manager, Automation Systems Business Unit Manager and other leadership initiatives focused on emerging technologies.  He has experience in marketing, sales strategies, and technology implementation via complete systems. Additional expertise: Data Center, Wireless and Wireline Telecommunication, Cable and a variety of manufacturing such as Automotive, Steel, Material Handling and Beverage. 

Martinson holds a Bachelor of Science degree in Marketing/Logistics from Ohio State University, Columbus.

David E. Geary, PE -  Co-Founder | Principal Engineer

Mr. David E. Geary, PE, is a licensed professional electrical engineer with a distinguished career spanning more than 30 years, during which he has brought innovation and leadership to a variety electrical engineering projects in many markets, including government and private infrastructure engineering, design, construction and operations. Mr. Geary is considered one of the pioneers and experts in the new evolution of higher-voltage dc power distribution for telecom/data centers and DC microgrids as it relates to alternative energy integration with energy storage in DC microgrids.  He is a multiple patent holder, a key contributor to evolving worldwide dc standards and codes and is a regular speaker and presenter at many industry events, conferences and policy planning summits.

As Co-founder / Principal Engineer at DCfusion, llc., Mr. Geary provides technical engineering innovation, vision and leadership for the use and development of alternative energy solutions, as well as higher voltage (380/400V dc) electrical system topologies for data centers and technology facilities. He is a leader in the movement for green technologies through his work with many companies to develop energy storage, alternative energy sources and DC power distribution system components in an effort to develop efficient power systems for a more sustainable future. 

Geary holds a Bachelor of Science Degree in Electrical Engineering from the University of Maryland, College Park, and is a registered professional engineer in the jurisdictions of Maryland, Virginia and Washington, DC

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