About Us
Main Signal.org is an international advisory firm that combines 25+ years of global expertise with deep local market understanding to deliver transformative impact across Africa and beyond.
To accelerate sustainable development across Africa by providing world-class advisory services that bridge global best practices with local realities, driving measurable impact for communities, businesses, and governments.
A world where sustainable development is the standard — where every building, supply chain, and health system is designed for both human prosperity and planetary health.
Visionary leadership driving sustainable transformation across Africa and beyond
Elizabeth Wangeci Chege is a distinguished sustainability leader and board-level strategist with over 25 years of transformative impact delivering climate-smart solutions across five continents. As Founding Director of Main Signal and Energy Efficiency & Cooling Officer at Sustainable Energy for All (SEforALL), she bridges public and private sectors to influence global and African government policies on sustainable cooling, energy efficiency, and resilient infrastructure.
She serves as Board Secretary of the World Green Building Council—the first Kenyan and the first woman to hold a continental leadership position—where she brings proven expertise in corporate governance, ESG integration, and strategic policy formulation. Her leadership has pioneered green building adoption across Africa, opened new investment channels in sustainable infrastructure, and shaped climate policy at the highest levels, including with the African Union Commission and G20 Presidency.
As a pioneering force in sustainable development, she co-founded the Kenya Green Building Society and championed the establishment of green building councils across African nations, directly influencing sustainable infrastructure development for more than 700 million people. She also spearheaded the collaborative development and launch of the Africa Manifesto for Sustainable Cities and the Built Environment, establishing the strategic framework now guiding policy decisions and investments continent-wide.
Energy Efficiency & Cooling Officer | Continental Lead | 2022 - 2026
Drive policy advocacy and technical implementation for sustainable cooling, energy transitions, and building efficiency supporting governments in crafting climate action plans and financing mechanisms aligned with international commitments.
Board Member | 2019 - Present | Vice Chair, Africa Regional Network | 2016 - 2021
Provide strategic governance oversight for the world's largest network of green building councils spanning 70+ countries. First Kenyan and first woman to hold continental leadership position.
Chief Executive Officer & Co-Founder | 2007 - Present
Built and scaled Kenya's leading sustainable construction consultancy, establishing market dominance in green building certification and delivering climate-smart solutions across East Africa's commercial, residential, and institutional sectors.
Founding Chairperson | 2011 - 2020
Built Kenya's premier green building industry body from inception, transforming it into the authoritative voice for sustainable construction policy and a leading policy influencer with government and private sector.
COP28, Dubai, UAE (2023)
Speaker at Sustainable Construction Talks: "Unleashing the potential of sustainable construction in the Global South"
COP27, Sharm El-Sheikh, Egypt (2022)
New York Times Climate Forward Debate participant; Buildings Pavilion interviews on women in energy efficiency
COP26, Glasgow, Scotland (2021)
Keynote speaker on Cities, Regions & Built Environment Day; discussed Africa's opportunity in sustainable construction
World Green Building Council Congress (2023)
Panel on climate action in Africa: strategies for sustainable urban development and green job opportunities
Africa Climate Summit 2023, Nairobi
Policy advocacy and speaker on sustainable cooling and energy efficiency
COP25, Madrid, Spain (2019)
Roundtable representative for Buildings in Africa
COP23, Bonn, Germany (2017)
Speaker and Moderator on African sustainable cities
COP21, Paris, France (2015)
Contributor to Conference of the Parties on built environment climate solutions
Africa Regional Network Summit, Mauritius (2018)
Speaker on green building expansion across Africa
East Africa Property Investment Forum, Nairobi (2018)
Speaker on sustainable real estate investment
Our Values
International perspective grounded in deep local market understanding
Every engagement designed to deliver measurable, lasting results
Forward-thinking solutions at the intersection of sustainability and development
25+ years of building relationships with governments, corporations, and NGOs
People-first approach to sustainable development and policy
Continent-wide expertise with a truly global reach
