G-Tower, PLLC is a U.S based support structure (tower & pole) solutions company with presence in Turkey. G-Tower provides tower engineering, inspection, procurement and project management services to the utility scale wind, small wind, power transmission & distribution, lighting, solar, offshore wind and wireless industries.

We focus only on the support structure portion of energy projects.


  • Treats each customer and project as its own.
  • Delivers more than is expected.
  • Strives to provide quality engineering.
  • Is committed to delivering reliable, comprehensive tower solution services to meet the needs of its customers.
  • Offers sound advice and timely cost-effective solutions to technical issues.
  • Supports clean energy.
  • Supports local businesses.

G-Tower’s mission is to be a reliable partner in order to enhance and add value to the projects of its customer.


Tower & Pole Engineering Services

  • Steel monopole design
  • Steel lattice tower design
  • FRP Composite pole & tower design
  • Wood pole design
  • Drafting & detailing
  • Design of tower accessories
  • Finite element analysis
  • Engineering review
  • In-place cost comparison
  • Foundation design
  • Transmission line design
  • Technical advisory and management

Other Tower & Pole Services

  • Tower & pole supply
  • Tower & pole accessories supply
  • Determination of fabricator
  • Fabrication inspection
  • Site inspection
  • Project management
  • Procurement services
  • After sales services
  • Business plans,investors and strategy
  • Expert Witness
  • Client’s Engineer
  • Investor’s Engineer


G-Tower maintains an active network of consultants, engineers and manufacturers that work on our projects from time to time. G-Tower works with several American pole manufacturers for its projects in the continental North America, depending on project type, size and location. G-Tower works with a reputable lattice and pole manufacturer based in Europe for its global projects. In addition to lattice tower and pole manufacturers, below is a list of our industry partners:


Rota International

Expertise in logistics and container services. Based in Manhattan, NY   www.rotaint.net

CMD Logo

CAD Mountain Designs

Tower drafting and detailing expertise. Based in Hazleton, PA www.cadmountain.com

APF Logo

All-Pro Fasteners

Expertise in manufacturing fasteners and fasteners related items. Headquarters in Arlington, TX   www.apf.com

Northstar Lighting

Expertise in lighting and camera lowering devices.
Headquarters in Chicago, IL


Expertise in transmission line and wireless tower construction
Headquarters in Ankara, Turkey


Expertise in structural engineering services. Headquarters in Istanbul, Turkey www.intacinsaat.com


Expertise in construction management services.
Based in Ankara, Turkey


Following commencement in May of 2013, G-Tower completed several support structure projects across the five continents of North America, Europe, South America, Asia and Africa. G-Tower provided support structure solutions over 20 countries including the U.S, Canada, Puerto Rico, Brazil, Peru, Turkey, Norway, Ireland, Scotland, Oman, South Africa, Kenya, Senegal, Nigeria, Zimbabwe and Rwanda for multiple clients.

List of reference projects can be provided upon request.

List of reference letters can be provided upon request.



G-Tower attended to AWEA Wind Power Show in Chicago

G-Tower was happy to participate to the top wind energy event in the continental North America.


G-Tower is contributing Canada’s energy infrastructure

G-Tower signed a long-term contract with Canada’s one of the top power utility companies to provide engineering management and transmission line project engineering services to 1800km long 230kv, 115kv, 44kv and 25kv transmission and distribution project in Ontario.


G-Tower moved to Boulder, CO

We are pleased to announce that as of March 2016, G-Tower is based in Boulder, Colorado. We are so excited to be in the renewable energy capital.


DWEA’s SMART Wind Consortium Support Structure Virtual Meeting

G-Tower participated to the DWEA’s SMART Wind Consortium Support Structure Subgroup’s virtual meeting and made a presentation. Click here to see a copy of Gunes’ presentation.


ASCE SEI Electrical Transmission & Substation Structures Conference

G-Tower participated to the ASCE SEI Electrical Transmission & Substation Structures Conference in Branson, Missouri with its project partner CAD Mountain Designs as exhibitor.


DWEA’s SMART Wind Consortium Support Structure Subgroup Meeting

G-Tower attended to the DWEA’s SMART Wind Consortium Support Structure Subgroup Meeting in National Renewable Energy Laboratory (NREL) in Golden, Colorado and made a presentation. Click here to see a copy of Gunes’ presentation.


Small Wind Conference 2014

G-Tower participated to the Small Wind Conference in Stevens Point, Wisconsin as exhibitor and speaker. Click here  to see a copy of Gunes’ presentation.


Small Wind Conference 2013

G-Tower participated to the Small Wind Conference in Stevens Point, Wisconsin as exhibitor.


Gunes Demirbas

Günes Demirbas, P.E.

Gunes has over 15 years of engineering and project management experience specializing in tower business including wind towers up to 6 MW, electric transmission & distribution towers up to 600 kV, telecommunication towers and lighting poles. Prior to start G-Tower, he worked for well-known tower manufacturers; Valmont Industries and Mitas Energy. He holds M.Sc. (Geotechnical) and B.Sc. Degrees in Civil Engineering from Middle East Technical University. He is a currently licensed Professional Engineer in Colorado and Texas; holding NCEES record. He enjoys travelling, cycling, swimming and hiking.

Didem Ergin
Vice President

Didem Ergin, P.E.

Didem is an environmental engineer with over 10 years of diverse technical and project management experience. Her expertise includes managing the environmental aspects throughout the life cycle of a wide range of large capital projects, including site selection and alternative analysis; schedule and budgeting; impact assessments; federal, state, and local permitting and regulatory compliance; environmental plan preparation; and auditing, reporting, and agency negotiations. Didem is a licensed P.E in Texas. Didem has worked for top-notch environmental consultancy and engineering firms throughout her career.

Vice President

Ali Gulgeze, P.Eng.

Regional Manager

Hasip Mahir Ergin

After graduated from Istanbul Kabatas High School, Mahir studied Mathematics. He holds M.Sc. and B.Sc. degrees in Mathematics. Because of his passion and interest in wind energy, he decided to join G-Tower in 2018. He is based in Ankara, Turkey. He is responsible from quality control of all the manufactured tower and pole products within Turkey prior to ship overseas. In addition to that he supports business development activities in the Middle East. He enjoys watching soccer and spending time with his two children Can & Umut Efe.


Matt Rogers, P.E.

Matt is a licensed Professional Engineer in Colorado with approximately 10 years of experience in consulting and project management. He holds an M. E. in Engineering Management and a B.Sc. in Civil Engineering from Colorado University Boulder. He performs statistical analysis and modeling projects for a variety of mid-sized businesses. He excels in stakeholder management, multi-million-dollar contract negotiations and purchase orders, cost-effective system engineering, health and safety auditing, and logistics coordination. He enjoys hiking in wilderness and traveling.

Media Director

Ozan Özkan

Ozan is studying Cinema Television in Istanbul University. He is based in Istanbul, Turkey. Due to his interest in smart cities and sustainability, he decided to join G-Tower in 2018. He is responsible from visual marketing activities of G-Tower. In addition to that he overseas and manages web design and social media activities of the company. Ozan enjoys practicing yoga, wing chun and reading.



World Map

Principal Office

Boulder, CO
United States

Branch Office

Kas, Antalya