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Our Staff

Pterra is comprised of a committed and dedicated group of professionals. Each of our principals have extensive experience in the power industry and have leading technical roles in their fields of specialization in electric power. In addition. Pterra staffs projects with capable technical personnel of proven skills and commitment.

Ric Austria

Executive Principal, Pterra founder

Mr. Austria is a founder of Pterra, LLC. He has over 35 years’ experience in electric power transmission planning, operations, voltage simulation and analysis, design and engineering, and brings this knowledge to help clients worldwide in the power industry. He is a renowned expert in the specialized fields of system reliability, transmission and distribution planning, integration of new technologies and system analysis. …

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Ramon Tapia

Managing Principal, Pterra founder

Mr. Tapia is a founding member of Pterra, LLC. He has 37 years of experience in transmission planning and operations. He has led and conducted transmission studies nationwide and overseas to assist Transmission Owners and ISO’s to develop sound solutions for the planning and operation of their interconnected power systems. ….

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Ketut Dartawan

Managing Principal, Pterra Founder

Mr. Dartawan is a Co-founder and Managing Principal of Pterra, LLC. He has 20 years of experience in power system studies. He has directed and participated in numerous analytical studies on electrical transmission and distribution. He has managed and conducted over 100 system impact, siting, generator deliverability, distribution and transmission studies in the United States and other countries involving proposed solar PV installations, wind farms, among others. …

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Dr. Moises Gutierrez

Principal Consultant, Pterra Founder

Dr. Gutierrez is a founder of Pterra, LLC and has more than 40 years of experience which includes interconnection studies, transmission access studies, power system expansion studies, dynamic modeling, dynamic analysis of power systems, feasibility studies, substation layout studies, switching and lighting surge analysis, transformer and induction machine model reduction, software model development, and teaching engineering and software courses. …

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Mario Infantado

Senior Consultant, Pterra Partner

Mr. Infantado is a partner of Pterra, LLC who has over 25 years of experience in electric power system studies and operations. He has been involved in numerous transmission and distribution studies for transmission and generation interconnection projects, conducting load flow analysis, dynamic stability simulation, short circuit analysis, harmonics analysis, and thermal and voltage transfer analyses to analyze operating limits and transfer capabilities of existing power grids. …

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Francis Luces

Engineering Manager

Francis Luces is a Power System Consultant with Pterra Philippines Inc. He has more than 5 years of cumulative graduate-level experience in electric power engineering focusing on electric power system analysis. At Pterra Philippines, he performed and participated in many studies involving generator and transmission interconnection projects, solar PV electrical fatal-flaw assessment, power system expansion projects, …

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Cherry Mae Bautista

Power System Consultant

Ms. Bautista is a Power System Consultant who has engaged in different projects such as network studies, site assessment, and interconnection studies for new generation and transmission system, power system expansion and validation of synchronous machine and power plant dynamic control model in the US and in the Philippines. …

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Ted Christopher Garcia

Power System Consultant

Ted Christopher Garcia is a Power System Consultant with Pterra Philipines. He is proficient in Transfer Limit Analysis, N-1 and N-1-1 Analysis, including Security Constrained Re-dispatch (SCRD), and Constraint Analysis acquired through his experience in transmission studies. He is also active in studies of short circuit analysis and harmonic analysis. …

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Anthony Austria


Mr. Austria has been with Pterra since 2007 as a student intern, junior engineer and now Consultant. His areas of expertise include power flow, transfer analysis and transient modeling, and has applied his skills to studies involving the integration of new generation, primarily solar and wind, as well as the transmission studies of large interconnected networks. His recent work involved power exchange capacities among South Asian countries of India, Bangladesh, Sri Lanka, Bhutan and Nepal, as well as between the various Indian states. He has also been active in studies of transient and temporary overvoltages and voltage flicker of solar inverters….

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Aldrin Reyes

Power System Consultant

Aldrin Reyes is a Power System Consultant at Pterra Philippines Inc. He has recently participated in large network analysis involving power flow, fault analysis, and transfer limit analysis with the aid of several power system analysis tools such as PSS/E, TARA, and PSLF. He has conducted thermal and voltage analysis for generator interconnection studies and performed power system modeling for legacy power plants.

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More of Our Team:

  • Wit Lastiani
  • Claudett Padilla
  • Carolyn Steuhl
  • Ryan Villajuan
  • Hannah Infantado
  • Andrew Austria
  • Mariz Ponce
  • Carla Sajines Padilla
  • Dana Infantado

For a full summary of our resources available for specific needs, please contact us at