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Welcome to Castalia - Castalia The world’s most water stressed cities turn to Castalia to develop strategies that will provide high-quality, reliable service to residents We turnaround under-performing utilities, bring in private finance, and promote wise use of secure water resources
Team - Castalia Want to know more about Castalia?Our Diverse Team of Experts
About - Castalia Castalia is the trusted advisor of corporations, utilities, governments, international agencies and infrastructure investors around the world We solve complex, strategic assignments and deliver sustainable, measurable results
David Ehrhardt - Castalia David leads Castalia’s work on market solutions to provide access to essential services His areas of expertise are private finance and regulation of infrastructure and utilities
Join - Castalia You have an opportunity to ask questions about Castalia, the work environment and the kind of work you can expect to do You will also be asked general questions about yourself and your professional education and experience
News - Castalia Castalia led a session at the ADB Forum on affordable housing in Central Asia, presenting strategies to engage the private sector and close the housing gap Read more
Castalia Contributes to Regulatory Reform Discussion at CREF 2025 At the 2025 Caribbean Renewable Energy Forum (CREF), Castalia joined the Caribbean Development Bank (CDB) and the Inter-American Development Bank (IDB) to present recent findings on regulatory frameworks and investment readiness in the renewable energy sector
Assessing Bus Fleet Decarbonization Options with the Zero-Emissions Bus . . . Castalia worked alongside the New Zealand Transportation Agency Waka Kotahi to help the Agency assess bus fleet decarbonization options The result is a model that calculates emissions and total cost of ownership based on technology type, route type and bus fleet size