MYR Group subsidiaries located throughout the various regions of the United States offer clients a nationwide network of resources in terms of manpower, tools and equipment.

RENEWABLE ENERGY ELECTRIC DELIVERY SERVICES

GREAT SOUTHWESTERN CONSTRUCTION, INC.

1701 GOLF ROAD, SUITE 3-1012, ROLLING MEADOWS, IL 60008 847.290.1891 MYRGROUP.COM NASDAQ: MYRG

MYR GROUP INC. IS AN EQUAL OPPORTUNITY EMPLOYER M/F/D/V ©2014MYRGROUPINC. SERVICE OFFERINGS EPC CONSTRUCTION NOTABLE PROJECTS Great Southwestern Construction, Inc. (GSWC) has GSWC offers the expertise required to Cedar Creek - earned a strong reputation in performing a variety of engineer, procure, and construct (EPC) Cedar Creek Wind Energy, LLC electrial construction services for clients throughought substations, transmission lines and • 74 miles of 230kV transmission line the nation. Services include construction and collector systems for wind power • New 230kV interconnect switching substation maintenance of transmission lines, distribution systems development. GSWC has an established Keenan II Wind Farm - Oklahoma and substations for electric utilities, cooperatives, track record of cost-efficient and timely The Delaney Group municipalities and private developers. GSWC has the project completion for all sizes and types • 10 miles of 138kV transmission line capability to complete electrical installations of any of projects. We are well-positioned to • New 35kV/138kV substation meet the needs of our clients through type and size, from high voltage transmission to low • 140,000 cicuit feet of 35kV collection system an EPC form of project delivery in the voltage controls. Emphasis on continuous improvement • 5 miles distribution under-build utilizing 336CSR in the area of safety, equipment, quality, management electrical power market. development and field supervision continue to make Rugby Wind Power - North Dakota GSWC a leader in the industry. Iberdrola Renewables • 10 miles of single circuit 230kV transmission line • 38.3 miles of 34.5kV overhead and underground collector system SAFETY IS LIFE • New 230/34.5kV collector substation It sustains our employees, customers and company, and is a company core value. Our culture embraces constant Goshen II Wind Farm - Idaho innovation and improvement in our safety practices M.A. Mortenson as the catalyst that sets us apart today, tomorrow and • New 161kV substation beyond. For us, this is not an option; it’s a requirement to • Addition to existing switchyard be the best in the industry. We strive to deliver the best safety training, tools, support and mentoring to each Red Hills Wind Farm - Oklahoma Acconia/M.A. Mortenson and every one of our employees. In turn, we expect and • 4 miles 138kV transmission line receive behavioral excellence and integrity that fuels • 20 miles of 34.5kV collector system success and innovation. • New 34.5/230kV substation

Magic Valley Wind Farm - Texas GREAT SOUTHWESTERN Magic Valley Wind Farm I, LLC (Blattner Energy) • Engineer-Procure-Construct (EPC) Project Established in 1977, Great Southwestern Construction, • New 138kV substation Inc. (GSWC) has successfully completed hundreds of • 258,000 circuit feet of 34.5kv underground transmission, substation and distribution projects. In collector system 2000, GSWC became a subsidiary of MYR Group Inc. (MYR Group), a publicly traded (Nasdaq: MYRG) holding Cedar Point Wind Farm - Colorado company of premier nationwide specialty electrical RES Americas construction companies. In addition to GSWC, MYR • East and West 230kV/34.5kV substation Group’s subsidiaries include: The L.E. Myers Co., Harlan • Missile Site Capacitor Yard Works Electric Company, Sturgeon Electric Company, Inc., MYR Transmission Services, Inc. and MYR Group Construction Alta Wind Farm - California Canada, Ltd. With roots dating to 1891 and over 3,500 Balfour Beatty Construction employees nationwide, MYR Group has delivered some • New 34.5/230kV collector substation of the largest transmission, distribution and substation • Foundations, structural steel bus, switches, projects in the U.S. and is one of the largest specialty circuit breakers, cap bank, control building, grounding, conduit, cable and finish rock contracting firms in the U.S.