It all starts with relationships

Deana Strunk


Deana Strunk is the owner of Amshore Renewable Energy. The company specializes in developing sustainable energy solutions for utility companies and independent power producers looking to expand their renewable energy projects.

Amshore has originated and developed solar and wind energy facilities generating 2.9 gigawatts of power covering over a half a million acres. She’s also owner of Amshore Ventures LLC.

Deana has more than 40 years in the energy business. Before helping establish and owning Amshore Renewable Energy, she was Vice President and Director at American Shoreline, Inc., an oil and gas exploration and development company established in 1979.

Prior to her energy career, she worked in the legal, transportation and banking industries.

Tylan Shelton

Project Developer

Tylan Shelton is a Project Developer at Amshore Renewable Energy. He is responsible for the full range of activities in developing commercial-scale wind and solar projects throughout the United States. Tylan has the overall responsibility for managing delivery of projects as well as assisting senior leadership with project financing and transactions. Business Development is a key part of Tylan’s role to ensure new development opportunities are identified in target areas of the market.

Tylan has been in the Wind Industry since 2006 and has been involved with the construction, development, repower and or asset management of over 3 gigawatts of renewable energy projects. He was the owner and President of Big Sky Wind Energy Inc. from 2009 to 2020.

Tylan attended the School of Architecture at the University of New Mexico and the Wind Energy program at Amarillo College. He later sat on the Advisory Board for the AC Wind Energy program and was on the Board of Directors of the Class 4 Winds Trade Organization. Tylan has been a speaker or panelist at dozens of landowner meetings, commissioner hearings, school board meetings, college campuses and community forums.

Aida Guzman


Aida Guzman is Associate Project Developer at Amshore Renewable Energy.

She has more than 35 years of experience. Aida manages Amshore real estate contracts for development projects including processing of lease procurements, rental/easement agreement payments and support landowner relations and conveyance of real estate documentation to landowners. She also supports with title review and curative efforts and supports the team with specific legislative and public relations campaigns, efforts and due diligence. She provides additional support with lease/project mapping, recordation of documents in various counties and title search support.

Aida studied legal at Del Mar College. She is an active member of the local Desk and Derrick Club of Corpus Christi, Texas.

John Heymann


John C. Heymann is Development Advisor at Amshore Renewable Energy. He was previously Chief Operating Officer overseeing the company’s general development operations.

He began his career in 1975 at Pennzoil Producing Company in Houston, Texas, analyzing and summarizing oil and gas leases purchased by the company, covering lands in the State of Texas. Later, in 1976 he went to work as a landman for a public drilling fund company, Centura, Inc., and subsequently, American Shoreline, Inc. where he ran title, purchasing and administering oil and gas leases for the company. John eventually became the Land Manager and Executive Vice President of Operations for American Shoreline, Inc. where he oversaw all aspects of the exploration and production operations of the company ranging from buying oil and gas leases to selling production from those leases to pipelines and end users.

John has a bachelor’s degree in Business Administration and a master’s degree in Business Administration from the University of Texas at Austin with a concentration in finance and accounting. He also graduated from the University of Texas School of Law in 1988. John was licensed to practice law in Texas on May 5, 1989, and has been Board Certified in Oil, Gas and Energy Law since December of 1995.

Scott Casterline

Amshore Ventures

Scott Casterline is President & Chief Ventures Officer of Amshore Ventures LLC. Amshore Ventures is focused on capitalizing on the tremendous opportunity in renewable energy development by seeking out new business models and growth opportunities.

Scott has run businesses for more than 30 years with a special focus in contract negotiation, client and career management, legal and other areas of business leadership. 

Scott received his bachelor’s in business administration (BBA) with a major in finance from Baylor University.

Mark Ward

Amshore Ventures

Mark Ward is Managing Director at Amshore Renewable Energy, responsible for developing and executing growth strategies for the company. As part of those strategies, he brings added value to the development of existing and future customer projects with the integration of innovative technologies that include artificial intelligence (AI) and energy storage.

Mark has more than 35 years of experience primarily in the power and energy sectors. He has served in senior management positions for private equity, independent power producers, investor-owned utilities and engineering and construction firms. His experience includes business and strategy development, project development, and management, mergers and acquisitions, asset management and generation planning. During his career, he has planned, developed, constructed, acquired/sold, financed and managed more than 10,000 megawatts of coal, coal gasification, natural gas, wind, solar and waste-to-energy assets valued at nearly $11 billion.

Prior to joining Amshore, Mark was Director of Renewables at Tampa Electric Company, managing the company’s solar program valued at more than $1.7 billion. He executed the company’s renewable energy strategy that includes more than 1,200 megawatts of utility-scale solar and its first energy storage project. He also led the purchase of more than 7,000 acres of land, procurement of more than 9 million solar modules, project development and construction of utility-scale solar projects to meet corporate business growth goals.

Previously, Mark founded the Global Sustainable Energy Group LLC (GSEG) which provided energy consulting services to private equity, renewable energy companies, power EPC companies and utilities. Earlier, he formed Mesa Power Group with T. Boone Pickens where he served seven years as an executive officer. He has also held a variety of other energy-related leadership positions at companies including TXU Energy, Shaw Group, Entergy Asset Management and Nichols Research Corporation (NCR). Early in his career, he also served in the US Army Missile Command.

Mark has a bachelor’s degree in Mechanical Engineering from the University of Alabama in Huntsville, and he continued his education with post graduate studies in engineering management and engineering optics.

Cas Purdy


Cas Purdy is Chief Administrative Officer (CAO) at Amshore Renewable Energy. As part of the senior leadership team, he is responsible for maximizing the company’s operating performance and helping achieve corporate objectives. Cas has a broad range of responsibilities including strategic planning, finance, legal, human resources, information technology, marketing, communications and more.

He has 20+ years of experience in business leadership focused on strategic planning, growth initiatives, corporate operations, marketing and communications. Previously, he was Vice President and Head of Marketing at cybersecurity leader Trustwave. During his tenure there, he and his team drove brand awareness and pipeline creation for the company resulting in growth and an eventual $850M acquisition by Singapore’s leading telco provider Singtel. He also held leadership roles at IBM, Websense (now Forcepoint) and Guidance Software (now part of OpenText).

He received his bachelor’s degree in Public Relations from the University of Texas at Austin, and he studied French at the University of Paris (La Sorbonne).

Leo Anzaldua

Leo Anzaldua leads and directs the accounting and finance functions at Amshore. He has more than 30 years of financial experience. For more than a decade, Leo was Controller/Vice President of Finance at ClimbTech. Before ClimbTech, he was Director of Accounting at Personal Administrators. Leo studied business administration at The Tecnológico de Monterrey in Mexico.