Executive Team

Renato Redentor Constantino

Executive Director

Red has worked for over a decade with international environment and development campaigning organizations, spanning South, Southeast, East, and Central Asia. He is the author of “The Poverty of Memory: Essays on History and Empire”. He writes for several publications, and his essays on history, memory, environment and development have been translated into several languages. 


Arielle Celine Tabinga

Executive Assistant

Celine is an Environmental Planning and Management graduate of Miriam College with a major in Urban Planning and Green Architecture. She was an intern of Project NOAH (Nationwide Assessment of Hazards), a disaster risk and reduction management program.

Project Management Team

Francis Joseph Dela Cruz

Partnerships and Advocacy Advisor

Francis has been a campaigner on various social and environmental issues, including coal and clean energy, for the past three decades. He is also an experienced facilitator and trainer on campaigning, project management and leadership. He first got involved with ICSC in June 2015 by promoting renewable energy solutions in Haiyan-affected areas in Samar and Iloilo. Francis heads ICSC’s project management unit and is the Convenor of Aksyon Klima Plipinas, a national network of over 40 civil society groups working on climate change issues.

Reginald Rex Barrer

Transitions Advisor

Rex is an environmental scientist and planner with more than twenty years of progressive experience in addressing changes in the climate, environment, and in organizations locally and abroad. He holds Masters degrees in environmental science and management, from the Yale School of Forestry and Environmental Studies, and in human resources development, from the University of the Philippines School of Labor and Industrial Relations.

Maria Celina Paula Valencia

Transitions Analyst

Paula works on transition projects with a focus on low carbon development. Her previous roles in the private sector gave her solid experience in the region's renewable energy sector, as well as rapport with private and government entities in the national and international levels. She is currently writing her masters thesis on environmental ethics and intergenerational justice.

Energy Policy Team

Engr. Jose "Viking" Logarta Jr.

Energy Policy Advisor

A licensed chemical engineer, Viking is one of the country's top energy economists and is energy policy advisor to both government and the private sector on energy and environment issues in the Philippines and in Southeast Asia. He advises electric cooperatives, other distribution utilities, and renewable energy developers as a partner in Asian Energy Advisors. He currently focuses on solving RE issues and implementation challenges faced by the utilities and generators in the Philippines transitioning to a restructured energy sector.

Atty. Pedro "Pete" Maniego, Jr.

Senior Policy Advisor

Pete is an energy law expert, industrial engineer, economist, management consultant and professorial lecturer. He chaired the National Renewable Energy Board for almost six years. He has over 45 years of experience in senior executive positions in the energy, metals, and other sectors. He also currently advises the Climate Change Commission and chairs the board of the University of the Philippines Engineering Research and Development Foundation.

Angelika Marie David

Research Assistant

Angge is a natural resource economics graduate. She previously worked on projects on sustainable development and ecotourism before joining ICSC. Her current research work focuses on the environmental monitoring and permitting of coal-fired power plants.

Jeffrey Koon

Research Assistant

Jeff is an economics graduate. His research work is on energy regulatory processes, particularly on renewables.

RE-Charge Pilipinas Team

Maria Golda Hilario

Associate for Program Development

Golda has had over a decade of experience in research and policy analysis in the areas of sustainable agriculture, livelihood systems and trade. Before rejoining ICSC, she was the general manager for the Philippine office of a regional institute. She currently supports the social enterprise incubation of RE-Charge and manages ICSC's agenda on energy access, sustainable energy community application, and gender.

Arturo Tahup

Project Coordinator

Uro is a veteran disaster risk reduction and management (DRRM) practitioner, trainer, rescuer, firefighter, community organizer and coalition builder. He has helped survivors of typhoons and floods in his hometown in Rizal and in Western Samar rise from the ruins and build their resilience. He now coordinates the RE-Charge Pilipinas project, including the Solar Scholars training program, aspiring for the convergence of DRRM, renewable energy, and low carbon development.

Orlando Quesada

 Community Outreach Officer

A local of Guiuan, Eastern Samar, Orlan works closely with our partner communities particularly in Guiuan's Suluan Island; Marabut, Samar; and Tacloban City, Leyte. He is also RE-Charge Pilipinas' gender person, continuing to provide gender sensitivity orientations to all interns and volunteers.

Prior to being ICSC's community outreach officer, Orlan has been our gender research consultant and community facilitator in Sulu-an.

Kenneth Lopez

Facility Administrator

Kenay assists the RE-Charge Pilipinas team in administration of the office and the solar facility. She has worked as an administrative staff for various private firms and organizations for over ten years. She recently worked as an area manager for a local social enterprise in Tacloban City.

Glinly Alvero

Community Outreach and Technical Officer

Glinly, a Haiyan survivor from Abuyog, Leyte, works for the RE-Charge Philippines project and Solar Scholars training program. He was a member of the One Tacloban relief operation and continues to volunteer for various NGOs in the region. A skilled outdoorsman, he also facilitates trainings on first aid, ropemanship, and other outdoor skills.

Climate Policy Team

Angelo Kairos Dela Cruz

Associate for Climate Policy

As head of the climate policy team, AK works on ICSC's policy initiatives by innovating strategies that transform policy discussions to positive actions. He led the campaign for the passage of the People's Survival Fund, and now leads initiatives to help local governments and communities access the Fund. He also leads the organization's convenorship of GCFWatch, a Southern CSO-led initiative established to help promote and accelerate civil society readiness to engage the Green Climate Fund.

Lourdes Tibig

Climate Science Advisor

Lourdes, a meteorologist and climatologist, is a member of the Climate Change Commission's National Panel of Technical Experts. She is a lead author of the upcoming Intergovernmental Panel on Climate Change Special Report on the Ocean and Cryosphere in a Changing Climate and was a lead author of Working Group II of the IPCC's Fifth Assessment Report. She was also previously chief of the Climate Data Section of the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) and researcher of the Manila Observatory.

Danica Marie Supnet

Research Coordinator

Danica leads ICSC's coordination with local academic institutions to localize the slow-onset events associated with climate change impacts in the country, as well as to craft adaptation proposals with local governments and communities. She also works on the local tracking initiative of climate adaptation finance in the Philippines.

Janssen Mozar Martinez

Climate Policy Analyst II

Janssen tracks climate finance and helps local governments and communities craft adaptation proposals, among other initiatives. He started out in ICSC as a research consultant.

Isabella Mendoza

Climate Policy Analyst I

Isabella joined ICSC in 2016 and worked as the Executive Assistant and Special Projects Coordinator. She is now part of the Climate Policy Team and works with local government units and organizations towards formulating their climate change action and resource mobilization plans.

Communications Team

Denise Fontanilla

Associate for Policy Advocacy

Denise has worked on climate change and other environmental campaigns, coordinating mass actions and communications initiatives with national and international civil society groups. She now coordinates advocacy and communications efforts of ICSC and advises the organization on the UN climate negotiations.

Joseph Manalo

Creatives Manager

Jo manages the production of ICSC’s creative products and the work of its creatives staff. He has over 17 years of art direction and graphic design experience for print, web, software and video applications. 

Aileen Camille Dimatatac

Media Coordinator

AC, a photojournalist, leads ICSC's relations with journalists and other media producers. She also produces photo and videos for the institute, aside from teaching communications courses at a state university. She has been a communications officer for an environmental NGO and a photojournalist for a newspaper.

Administration and Finance Team

Cheryl Guilas

Administration and Finance Manager

Che worked for a bookkeeping firm for 20 years before joining ICSC in 2013. More than just heading ICSC's administrative and finance team, she is considered the mother of the team.

Mary Ann Calma Santoalla

Business Support Coordinator

Annie has sixteen years of experience in humanitarian and human rights work and thirteen years of experience in the production and publication of public information and education and mass communication materials. She currently supervises events management and logistics for ICSC, among other administrative tasks.

Jacqueline Tumaliuan

Administration and Finance Assistant

Jackie, a certified bookkeeper, worked as an admin staff for a private school before joining ICSC in 2012.

John Herson Opena

Administration Staff

John is an information technology graduate. He was an equipment caretaker and data encoder before joining ICSC.

Ma. Dianna Benaya

Administration Staff

Dianne worked as the secretary of a parish church before joining ICSC in mid-2015. She also graduated from a short course in bookkeeping.


Chien Huan

Chien Huan finished his master degree in Zhengzhi University in Taiwan, focusing on international economic law and climate change policies. He is also a board member of the Taiwan Youth Climate Coalition (TWYCC). For his internship, he is mapping the synergies and tradeoffs of the Sustainable Development Goals and applying them to the context of the Philippines.

Melissa Smith

Melissa is undertaking an internship with ICSC, as part of her Master’s degree at the University of Uppsala, Sweden. Her graduate studies in Sustainable Development have fostered a strong regard for projects focused on adaptation and resilience. Her primary research interest is on the role of energy systems, and their future development in response to global climate change.