The Green House consultants have 35 years of combined experience in the sustainability field, working in industry, consultancy and academia in South Africa, Australia, Denmark, the UK and the USA.

Our experience spans a variety of sectors including mining, minerals, chemicals, energy generation, bioenergy, biofuels, water, agriculture, food, consumer products, retail and building materials.

Who we are


Dr. Brett Cohen Dr. Yvonne Lewis Dr. Philippa Notten
BSc. Chem Eng. (UCT)
BSc. Chem Eng. Hons. (UCT)
PhD (USyd)
BSc. Chem Eng. (UCT)
Brett is a principal consultant at The Green House, with his focus areas including climate risks and opportunities, scenario and futures planning, technology assessment, industrial ecology, decision support, facilitation and strategy development. His interests include development of decision support frameworks, tools and modelling paradigms for supporting complex decision-making in the context of sustainability, in strategic, tactical and operational decision contexts. Yvonne is a principal consultant at The Green House specialising in carbon footprinting, environmental management and the quantitative assessment and modelling of systems in support of strategy, scenario development and futures work. Yvonne has a keen interest in sustainability metrics and indicators and experience in ecological footprinting and carbon footprint methodology development in the urban context. Pippa is an expert LCA practitioner with over 15 years of experience, primarily relating to life cycle assessment and product carbon footprinting in the food, retail, and consumer good sectors, and in the primary industries (mining and power generation). Pippa has worked as a consultant in the USA, Denmark and South Africa contributing to a number of industry, EU- and UNEP-funded research projects in the broad areas of process technology assessment, Life Cycle Assessment (LCA) methodology development and environmental decision-making.
[Read more] [Read more] [Read more]
Alexandra Logan Myra
Ilhaam Patel Alexandra Logan Myra Naik
BSc. Chem Eng. (UCT)
MSc Chem Eng. (UCT)
BSc. Hons. (Earth. Sci.) (Stellenbosch)
MSc Sust. Dev. and Clim. Change (UCT)
BSc. (Ecol and Environ. & Geogr. Sci.) (UCT)
BSc. (Hons) (Atmospheric Science) (UCT)
Ilhaam has an undergraduate and MSc in Chemical Engineering – the latter including Life Cycle Assessment (LCA) of bioenergy technologies. Since joining The Green House, she has been involved in research and analysis projects relating to the manufacturing, agriculture, energy, mining and dairy sectors, and in particular has been doing product LCAs and environmental product declarations. Alexandra’s MSc thesis in Sustainable Development and Climate Change focused on the sustainability of luxury safari lodges, particularly environmental sustainability. At The Green House she is involved in projects and research relating to climate change mitigation in South Africa, including extensive quantitative modelling work. Other research areas include energy efficiency and the commercial exploitation of alien invasive plants. After completing her  undergraduate and Honours degrees, Myra completed her M.Sc. focused on the potential impacts of forestation on climate change in Southern Africa. Myra has a passion for quantitative modelling of complex environmental systems.  Myra is currently involved in a variety of research and analysis projects at The Green House.
[Read more] [Read more]  [Read more]
Samantha Hendry This Could Be You
Samantha Galvin Work For Us
Samantha is our office manager, who uses her strong admin skills ensure the smooth running of the TGH office. Samantha comes from an event coordination and accounting background. The Green House is looking to appoint a senior consultant in 2016. Click here for further details. Applications remain open.
[Read more] [Read more]


Our carbon footprint

The Green House manages its carbon footprint by supporting poverty alleviating emissions reduction projects.

All offsets are purchased through the Credible Carbon Registry which is independently audited.

Click here to read more about Credible Carbon. View our offset certificate for 2014-152013-142012-132011-12 and for  2010-11.


The Green House is a proud supporter of the following organisations:

 Afrika Tikun

Afrika Tikkun provides education, health and social services to children, youth and their families, through centres of excellence in South African townships. Their aim is to empower communities to develop new generations of productive citizens. Click here to read more about their fantastic work.


Goedgedacht supports rural children and communities in the Western Cape. Click here to learn more.

Valley Devel Proje

Valley Development Projects seeks to improve the lives of people in the Ocean View and Masiphumelele communities in Cape Town. Divided into three major programmes, the Open Door Project, Early Learning Support Programme (ELSP) and Social Work programme, VDP addresses social issues using an integrated development approach. Click here to find out more.