William K. Robertson

Overview

Quintana Infrastructure & Development LLC (QID) is an investment holding and operating company headquartered in Houston, Texas. Established in 2011 by William K. Robertson, QID specializes in adaptive infrastructure investments across sectors such as energy and power, data and technology infrastructure, industrial end markets, and resource management. The firm seeks to make investments and manage operations of assets for itself or on behalf of like-minded partners, aiming to deliver superior returns for stakeholders through responsible and creative capital deployment. QID's investment strategy is opportunistic, focusing on long-term holds while remaining ready to monetize as market conditions present favorable opportunities. The firm emphasizes management and field-level personnel who make honest, deliberate, nimble, and value-guided decisions. QID's approach includes the development of greenfield and brownfield assets into operating companies, acquisition of mature assets for repositioning or repurposing, and provision of growth capital to evolving businesses. The firm maintains an eye for generational assets, or those that offer long-term, stable, and inflation-protected returns. QID's portfolio includes investments in various infrastructure sectors, such as data centers, broadband fiber, wireless network-related infrastructure, industrial gases, waste management, water logistics, energy transition projects, and midstream and downstream energy infrastructure. The firm has also partnered with Astarte Capital Partners to form QAI Capital, targeting over $1.5 billion of lower mid-market infrastructure projects in North America. This partnership combines QID's investing, operating, and development expertise with Astarte's asset management and ESG framework, focusing on infrastructure verticals of data and technology, industrial and environmental, and decarbonization and energy transition. QID's investment philosophy centers on stewardship of assets for the long term, ensuring that customers are satisfied today and comfortable in sustaining their commitments tomorrow. The firm remains opportunistic in its investment selection and timing, preferring to prepare for a long-term hold but ready and willing to monetize as market conditions precipitate favorable opportunities. QID's approach is guided by a commitment to responsible and creative investment practices that deliver superior returns for stakeholders.

Investment Focus

• Adaptive infrastructure investments
• Long-term hold strategy
• Opportunistic investment selection
• Focus on responsible and creative capital deployment
• Interest in sectors such as energy, technology, industrial, and environmental infrastructure

Portfolio Companies