Aeterra is a full-service environmental and sustainability consulting firm that provides operating businesses and their owners with meaningful, practical, business-focused advice. Our services include transaction advisory and due diligence, ESG and sustainability, compliance, and investigation and remediation.

Aeterra was formed in 2021 by a group of experienced professionals who have focused throughout their careers on providing environmental advice for clients engaged in transactions.

Aeterra is ideally positioned to provide high-quality, responsive, and pragmatic environmental services that are accretive to business and asset value. We provide value-added insights and plans related to the financial implications of environmental issues. We also assist operating companies with compliance and help companies create thoughtful, practical plans to address ESG.


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    Transaction Advisory

    We perform business-focused environmental due diligence for buy- and sell-side transactions, with scope customized to reflect the transaction’s relative risk.

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    ESG Advisory

    We complement transaction due diligence before and after the close with advice on measures relating to environmental, social, and governance concerns.

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    Compliance Services

    We assist companies in achieving compliance with environmental permitting requirements, along with advice to management on operating plans, training, and staffing.

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    Investigation & Remediation

    We perform site investigations and implement remediation plans developed by Aeterra’s professionals.

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    Energy Audits

    We help clients evaluate and reduce operational costs, including analysis to optimize energy use, evaluate energy contracts, and offer alternatives.

As both companies and investors adjust to rapidly changing economic conditions and must address the growing importance of ESG, there is a significant need in today’s marketplace for thoughtful, business-focused environmental services.

Aeterra’s professionals are uniquely qualified to meet this need. We keep the interests of investors and owner/operators front and center as we conduct due diligence, develop remediation plans, and provide practical advice, including portfolio company operating plans and input on appropriate training and staffing.

Leadership Team

Our team of professionals has decades of cumulative experience in providing environmental services to financial and strategic buyers and sellers. Key principals include:

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    Philip G. Newton

    President & CEO

    Philip Newton founded environmental advisory firm GaiaTech in 1993 and was a pioneer in developing business-focused environmental due diligence, site investigations, remediation, and related consulting services to meet the financial and planning needs of private equity investors, portfolio operating companies, strategic buyers, and financial institutions. Newton sold a majority stake in GaiaTech to private equity firm MSouth in 2008. He led the firm until its sale by MSouth in 2014 to a publicly traded company then acted as a business advisor to the company.

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    Kristen Magee

    Senior Vice President

    Kristen Magee has more than 15 years’ experience as an environmental due diligence and ESG professional, specializing in mergers and acquisitions, regulatory compliance, and ESG advisory services. She has represented financial investors, strategic buyers, and lenders in thousands of buy- and sell-side environmental diligence projects in the U.S. and internationally. Magee also helps clients integrate and manage ESG in ways that make sense for firms and their portfolio companies. In her previous role, Magee founded a regional office and managed a team of environmental and ESG professionals.

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    Alan Rogney

    Senior Vice President

    Alan Rogney has more than 15 years in the environmental consulting industry; he specializes in due diligence advisory services, particularly for buy and sell-side M&A transactions. His representative clients have included numerous private equity firms and other financial investors, attorneys, banks, lenders, and real estate parties. In his previous role, Rogney managed the due diligence group of more than 50 individuals at a large environmental consultancy.


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