Green Building Design Group

about Us

100% Black women owned

Multi-Disciplinary Data Analytics Partner

Guiding private and public sector clients to achieve the Sustainable Development Goals (SDGs) within infrastructure projects.

ESG Services - Your global partner of choice in the green economy

Our expertise & combined project team experience of over 40 years working in the green economy includes Climate Change Mitigation and Adaptation, Sustainable Development Goals (7, 9, 11, 17), Energy Performance Certificates, Carbon Reduction, Training and Education, Carbon Market Intelligence, Tax Incentives, Carbon Reporting, Measurement & Verification, ESG Reporting, Energy Services, Circular Economy and Sustainability Strategy Development.

E SDG logo UN emblem square trans WEB 1024x879 1 - Your global partner of choice in the green economy

We are actively using smart digital technologies to ensure Monitoring, Alarming, and ESG Reporting tools to enable enhanced safety and risk management for your real estate and manufacturing asset portfolios.
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Songo Didiza

Our solutions

Industries we Serve

We are always stronger when we collaborate.

Financial Services
Oil & Gas

Our Research

Our Team


Songo Didiza I Managing Partner

Songo Didiza is an entrepreneur and a green economy expert who founded the Green Building Design Group (GreenBDG) as a smart technology-enabled business solutions provider in South Africa, using innovative and circular approaches. 

Her industry experience spans across the energy, construction, financial services, manufacturing, government, NGO, property, oil & gas sectors in Sub-Saharan Africa.

She has been voted Sub-Saharan Africa’s Energy Innovator of the Year by the Association of Energy Engineers (AEE) in 2019. 

She is a trusted global advisor on the green economy and has advised on transactions exceeding USD 1 billion to fast track the green growth in Africa. She currently serves as a SA REITs Advisory Member developing an ESG Disclosure framework for the SA REITs Association and is a part-time university lecturer at the University of Cape Town.  

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Sumaya Mahomed | Partner

Sumaya Mahomed is an Renewable Energy expert and has played a pivotal role, having worked in countries in South Africa, Kenya and Uganda. 

Her expertise includes Management Consulting,  Renewable Energy Technologies; Electrical Maintenance Services; Training & Development; Science, Technology, Engineering; Results Based Financing Tools. She has technical experience in developing solar projects of above the 1 MW in size.

She has been voted Sub-Saharan Africa’s Energy Manager of the Year by the Association of Energy Engineers in 2022.  

She has a background in Chemical Engineering and Masters Programme in Sustainable Development.  She has registered for a MBA. She is a Board member of the Institute of Energy Professionals Africa (IEPA).

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Zadok Olinga | M&V Engineering Lead Mr.​

Zadok Olinga is an expert in Measurement and Verification (M&V) and Energy Efficiency assisting South African corporate companies obtain cost improvements in their operations. He has carried out M&V inspections and written energy efficiency technical reports on more than 80 projects on the Eskom EEDSM program, the Section 12I tax incentive, and the Section 12L tax incentive.

He has over 10 years of experience in energy efficiency projects, which includes the South African regulatory and tax environment, and knowledge of ISO 17020, SANS 50010, ISO 50001 standards and the IPMVP guideline for M&V. He holds accreditations as a Certified Measurement and Verification Professional (CMVP®) and Certified Energy Manager (CEM®), from the Association of Energy Engineers (AEE). He is the President-Elect of the Southern African Energy Efficiency Confederation (SAEEC). He is currently pursuing a PhD with a focus on microgrid renewable energy systems and optimisation around their implementation.

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Mutsa Kajese | Advisory Board Member

Mutsa Kajese is a non-executive global Advisory Board member to GreenBDG. He is the Founder of UbuntuLab, a Personal Growth Hub which focuses on instilling holistic development and to emerging global influencers and leaders globally. The programs under UbuntuLab, focus on personal growth through (re)connecting with your Authentic Self and take the participants on a journey of self-discovery and authenticity.

Mutsa has spoken in Germany, Belgium and was invited to present Ubuntu Education in Sustainable Development at the International Sustainable Transitions (IST) Conference in Sweden. He has trained young teachers in Kenya’s national Youth Empowerment Initiative and is a founding member of the TedX Harare organising committee. He is also the author of 30 Days of Transformation, A Guide to Your Authentic Self, now available on Amazon.


Our work within the entrepreneurial Network in South Africa

Green Building Design Group is a trusted sustainability  advisory services specialising in energy management, climate policy advisory and green building integrated services. The company has a combined project team experience spanning over 30 years in sustainable energy management  and green building services projects. We are Level 1 B-BBEE black women company (100% black female ownership). Our professional teams of sustainability experts comprise are ESG professionals, Green Star accredited professionals, economists, software engineers, sustainable energy engineers, programmers certified project managers, certified Measurement & Verification professionals in Sub-Saharan Africa.