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© TNC

the team

Justus Raepple Profile

Justus Raepple

TNC Facility Program Lead

Justus serves as TNC’s program lead to the Nature for Water Facility. He began his TNC career as a deal lead in its impact investment unit, NatureVest, where he was responsible for developing and structuring transactions in new product areas. Following this, he served as a conservation finance lead to the Resilient Watersheds Strategy with a focus on driving sources of long-term sustainable funding into sourcewater protection programs, including the network of 40+ water funds TNC is involved with. Prior to TNC Justus spent half a decade in the private finance sector, principally conducting private and public equity investing in the hedge fund space. Justus received a bachelor’s degree from the University of Toronto in economics and international relations.

Michael Vice

Michael Vice

Pegasys Facility Program Lead

Michael serves as Pegasys’ program lead to the Nature for Water Facility. At Pegasys, Michael leads the Innovative Finance Practice. His team comprises multi-disciplinary professionals who create bespoke funds and facilities that aim to address critical livelihoods and ecosystem challenges across the Global South. Michael’s work includes the development of resource mobilization strategies and investment plans to help capitalize these funds and facility, with a distinct focus on using innovating approaches to attract private sector capital. Prior to joining Pegasys, Michael was a Sustainability Engineer at JG Afrika, conducting designs and construction supervision of sustainable infrastructure including solar PV, rainwater harvesting and waste-to-energy. He is a registered Professional Engineer, with a Masters of Engineering from the University of Cape Town in Sustainability and Systems Thinking. Michael was also part of the inaugural cohort for the Impact Finance Innovations Programme at the University of Oxford’s Saїd Business School, and has a Certificate in ESG Investing from the CFA Institute.

Brooke Atwell

Brooke Atwell

Engagement Manager

Brooke Atwell serves as an Engagement Manager for the Facility and is the Associated Director for The Nature Conservancy’s Resilient Watersheds strategy, where she works to conserve watersheds around the world by developing sustainable watershed investment programs that meet the needs of biodiversity and communities. Brooke develops and executes a global strategy to mainstream nature-based solutions in the climate and water sectors and manages the strategy’s portfolio of flagship programs. She has a strong background in collaborative strategic planning, program management, economic and financial analyses for NbS, strategic communications, and operational and relationship management in cross-cultural, multidisciplinary settings. She has a Bachelor of Science degree in environmental science from the University of Virginia.

Jack Beard

Jack Beard

Science Technical Lead

Jack is a hydrologist with expertise in nature-based solutions, climate change and water resources. His key interest is exploring how water resources challenges interface with ecology, climate and society. Jack is a consultant at FutureWater, a Dutch research and consultancy organisation, and recently moved to the UK to work with TNC on the Norfolk Water Strategy. Outside of work, he loves getting out into nature—whether that be hiking, climbing, cycling or swimming.

Hannah Benn

Hannah Benn

Engagement Manager

Hannah is an economist specialising in socially and ecologically sustainable development. Hannah has developed specialised skills in a range of economic, financial, and analytical methods relevant for sustainable development. These include Social Cost Benefit Analysis (SCBA), Multi-Criteria Decision Analysis (MCDA), environmental valuation techniques, financial modelling, funder mapping and analysis, and various assessment methods for climate change resilience and socio-economic impact. Through her work on Water Funds, Hannah has (i) assessed economic impacts in the context of sustainable livelihoods, climate change resilience and urban development, (ii) designed innovative finance structures, fit for a range of purposes of including largescale ecosystem enhancement, localised livelihood development, and regional climate impact readiness, and (iii) produced feasibility studies and business cases to communicate effectively to a range of audiences including government officials, private financiers, implementation agents as well as project beneficiaries. Hannah holds a master’s degree from the University of Edinburgh in Ecological Economics.

Kasuna Chirwa

Kasuna Chirwa

Program Coordinator

Kasuna serves as a Program Coordinator on the Facility, mainly focusing on the Operational aspects and coordination of engagements on the Facility. She has professional experience in Financial Management, Project Governance as well as Programme & Project Management. She has worked in the Telecommunications industry with complex and multiple projects varying from the deployment of Telecommunications infrastructure, Revenue Assurance, and ensuring the Operational Compliance and Operational efficiencies in line with industry Frameworks.

Juan Diego González Parra

Juan Diego González Parra

Science Technical Lead

Juan is a Water Resources Engineer with more than 10 years of experience in water-related environmental projects, including technical and policy development, as well as project management and coordination of interdisciplinary teams. He is a civil engineer and holds a master`s degree in water resources engineering (Universidad Nacional de Colombia). Juan has worked in several water-related projects in water sector consultancies and government agencies, involving hydrologic and hydraulic modelling of watersheds and aquatic ecosystems, and advised the development of technical documents, guidelines, and regulations in Colombia, related to integrated water resource management, including water quality, environmental flows, riparian zones, and sediment management. Until 2021, Juan worked with the Ministry of Environment and Sustainable Development in Colombia, where he was in charge of the development and advisory on the application of technical standards and regulations related to sustainable watershed management. Juan also has experience as a trainer to diverse background audiences, including government agencies, non-government experts and communities, on sustainable water management.

Tamryn in from of a white background

Tamryn Heydenrych

Engagement Consultant

Tamryn is an Environmental Scientist with a background in environmental and sustainability consulting. She has worked in a wide range of sectors and environments and joins the Nature for Water Facility as a consultant to assist in bridging the gap between all the role players.

A short haired white woman with arms crossed in front of a green, natural background

Nancy Lilly

Communications Coordinator

Nancy coordinates and manages media and communications for the Facility.  She is a Natural Resource Communications professional and a systems thinker with over 10 years of experience connecting people with their environment.  Based in Virginia, in the United States of America, she has a background in municipal stormwater outreach and education, community based science, and behavior change campaigns.  If you haven’t heard from Nancy, she is most likely on a boat or deep in the undergrowth of the Appalachian forests.  

Deepti in front of a lite gray background

Deepti Maharaj

Engagement Manager

Deepti is a management consultant with experience in water resource management. She has worked on policy analysis and institutional development in the South African water sector as well as strategy formulation and implementation programming for various water projects in South Africa and the SADC region. She has been involved in many policy development projects across the remit of integrated water resource management as well as involvement in several water resource management institutional development processes in the SADC region. Her other work includes policy and regulatory projects in groundwater, water-use efficiency and water stewardship.

Elisabeth in front of a gray background with a pink shirt on

Elisabeth Makumbi

Engagement Manager

Elisabeth Makumbi is an admitted attorney in South Africa and an Engagement Manager at Pegasys. Elisabeth has experience in fund design specifically on mobilising investment for sustainable initiatives and infrastructure in Africa and Asia. She has a multifaceted consulting background in technical, legal and governance disciplines across various infrastructure sectors. She uses innovative financing approaches and alternative funding mechanisms to leverage public and private investment for sustainable infrastructure. In her most recent experience, she is assisting with establishing a fund in the Mekong region that will attract funding from multiple sources to finance identified social and environmental investment and adaptation opportunities. She was also the key resource in conceptualising a Sinking Vehicle and Impact investment Vehicle that will create a financial sustainable mechanism to fund the Cubango-Okavango River Basin (CORB) Fund’s interventions, using external capital. Alongside this task, she was responsible for establishing the statutory governance structures for the CORB Fund, including the Board of Directors and registration of the company.  Elisabeth is also the team lead for the establishment of the Green Guarantee Company which required funding from the Green Climate Fund. To access the funding a strategic gender assessment and Environmental and Social (E&S) Management system was required by the client. She was instrumental in designing both the gender assessments that ranged across 19 countries as well as building the E&S Management System and Operational Manual. Currently, she is also the project lead of the Sustainable Manufacturing and Environmental Pollution (SMEP) programme which will tackle the problem of pollution and environmental degradation generated by manufacturing processes in DFID’s priority countries across Sub-Saharan Africa and South Asia. She was also on the legal workstream for the C40 South Africa Building Programme and drives the development and implementation of energy efficiency policies and programmes for new buildings in South African cities to ensure that they work towards a net zero carbon performance.  Prior to her work at Pegasys, Elisabeth was a Gender and Legal Consultant at the World Bank Group, based in Washington DC working on the Women, Business and the Law Report. She also worked at Webber Wentzel Attorney as an admitted attorney in the commercial litigation team. She also holds a LLB from the University of Pretoria and Masters in Law from Georgetown University in Washington DC.

Douglas with a verdant background

Douglas Nyolei

Science Technical Lead

Douglas is a land and water resources specialist/engineer with a wealth of experience in the agriculture, water and environment sectors covering field practice, project management and research for development. He has successfully supported efforts aimed at improved agricultural productivity and sustainable land and water management in agricultural landscapes for improved food and water security systems. As a trainer/facilitator, he has provided numerous capacity building trainings to farmers/local communities, governments, non-governmental organizations and academic personnel on agricultural land and water management and the application of ICT based decision support tools (GIS, Remote Sensing and IoT) for sustainable management and development of land and water resources, especially in agricultural landscapes. Douglas holds a PhD (Doctor of engineering sciences) in Hydrology and Water Resources Management (Vrije Universiteit Brussel -VUB, Belgium), a Master of Science in Water Resources Engineering (Katholieke Universiteit Leuven - KUL, Belgium) and a Bachelor of Science in Environmental and Biosystems Engineering (University of Nairobi - UoN, Kenya).

Carlos Andrés Rogéliz Prada

Carlos Andrés Rogéliz Prada

Science Technical Lead

Carlos is a Civil Engineer with a Masters in Hydraulic Resources. He leverages his extensive knowledge of hydrological and hydraulic mathematical modeling to develop successful nature-based solutions programs in Colombia that sustainably manage water resources for the benefit of people and nature. He specializes in providing thoughtful consultation for projects related to the analysis of hydrographic basins, hydraulic studies of rivers, management of geographic information systems, and generation of software and applications that analyze and compile large quantities of information.

Thomas Skurtis

Thomas Skurtis

Engagement Manager

Thomas is passionate about environmental and sustainable development issues and uses his financial and project management skills to design and implement innovative solutions that benefit both nature and people. Thomas has 15 years of blended experience in project finance, development finance, renewable energies, and nature-based solutions. This allows him to bring different perspectives on how to effectively engage stakeholders in conservation programmes. For the past 3 years, Thomas has led the Blue Energy Mechanism initiative, a joint Conservation International and The Nature Conservancy effort to set up Payment for Ecosystem Services schemes with the hydropower sector. Outside of work, nature is also very much a central part of his life, as he enjoys mountain biking and hiking whenever he can.

Carolin Solik

Caroline Solik

Call for Proposals Manager

Caroline manages the Call for Proposals for the Facility. Caroline works on both water and resilience projects, with a focus on the sustainable livelihoods and social inclusion elements of water infrastructure projects. She has developed strong technical and managerial expertise in the planning, design and delivery of water and livelihood programs across southern and eastern Africa through her involvement in donor-funded regional water programs. Her technical engineering skills are coupled with a strong understanding of the gender equality, social inclusion and climate issues associated with infrastructure interventions, and she has led the research and development of bespoke climate change risk and vulnerability assessments, livelihood hotspot mapping analyses, and gender guidelines for the UKAID-funded Climate Resilient Infrastructure Development Facility.

Erik Spiro

Erik Spiro

Engagement Manager

Erik is an Engagement Manager for the Facility. He has experience in broad-based strategy, financial & market modelling, and enterprise growth experience consulting for investment funds and businesses in Europe. He has since pivoted to climate and development, working with organizations such as the African Development Bank and the Gates Foundation. His NbS experience includes costing and funding analyses, and portfolio design.

Anne-Louise Vernes

Anne-Louise Vernes

Knowledge and Impact Manager

Anne-Louise is the Knowledge and Impact Manager for the Facility. Based in London, she has a strong background in natural resource management and climate change adaptation. She has supported the pre-feasibility assessment of several Water Funds and co-authored the How-to Guide for preparing Watershed Investment Programs alongside TNC. Anne-Louise has a background in institutional and policy analysis and has experience in designing stakeholder mapping and engagement tools. Additionally, she has been involved in the design of multiple M&E frameworks for large scale projects and has led the knowledge management of the UK’s flagship forestry program. She holds a Master’s of Public Administration in Development Practice from Columbia University’s School of International and Public Affairs (SIPA).

Trees in winter fog

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