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With green buildings, Kenya can secure a cleaner, healthier future

By Irene Wamanga | October 20th 2021
Solar panel [File]

On October 4, the world marked the annual United Nations World Habitat Day. The theme was 'Accelerating urban action for a carbon-free world'. This was in recognition that cities are responsible for 70 per cent of global carbon dioxide emissions, with transport, buildings, energy, and waste management accounting for the bulk of urban greenhouse gas emissions.

According to the World Bank, a global population of 4.2 billion people live in urban environments and this will increase by 2.5 billion people in the next three decades. This rapid growth in urban settlements is one of the key drivers of cement consumption.

With the rising levels of urbanisation, research firm IMARC’s report for East Africa Cement Market predicts stable growth in the next five years along the global compound annual growth rate of around five per cent. Currently, the residential sector holds the largest market share owing to a rise in the demand for better housing facilities from the middle-class population.

This a big opportunity for cement businesses that comes with an even bigger need to give consideration to our environment.

The first goal of the Paris agreement–2015 is to limit global warming to well below two degrees Celsius, and the second goal is to achieve a climate neutral world by mid-century. We therefore have a role alongside other key stakeholders in ensuring sustainable urbanisation.

Gas emissions

A sectoral breakdown by UN Habitat on the technically feasible and available mitigation measures to achieve a 90 per cent greenhouse gas emission reduction shows that the building sector can account for 58 per cent of the cut, followed by transport sector at 21 per cent, materials efficiency at 16 per cent and the waste sector at five per cent.

We have been taking an all-round approach with sustainability pillars on climate and energy, circular economy, water and biodiversity to avert the pressure placed on our environment, and more participation by other manufacturing industry players as well as the consumers can go a long way.

At the core of our cement business, we have to first look at the building materials supplied to the market and how they are contributing to the ‘Race to Zero’ carbon goal. As consumers become more aware of their role in sustainability, demand for green construction solutions is on the rise. This involves a more careful selection of materials and designs that leverage low carbon standards and incorporating low carbon cements in construction.

Sustainable building projects with futuristic features are taking shape in Kenya and we are seeing more consumers express the need to incorporate the ‘green construction’ theme in their buildings, especially in the applications of materials, water harvesting systems, water reticulation systems, solar panels to cater for lighting and water heating needs as well as features like large windows for maximum natural light and fresh air, among others.

Green construction has long been a goal for the construction industry and we have the ‘Houses of Tomorrow’ initiative and a range of Green Cement products running in line with this ambition.

Carbon footprint

On the ground, there is still demand for expert technical support to orient customers on sustainable buildings needs to help them understand the ‘green building’ concept but also to help them have a better understanding of low carbon footprint and how it matters, thus enabling them to make better and sustainable construction decisions.

By embracing a green construction mentality, cement producers and consumers will greatly contribute to sustainable urbanisation. These have to be complemented by other environmentally friendly ways of cement production such as reducing fossil fuels usage by bringing together waste producers to dispose of their waste in cement kilns and using solar as an alternative energy source.

The role of cement manufacturers can go beyond their production processes and construction solutions to ensuring they extend environment conservation initiatives to the market.

Such ways would include awareness of proper processes to dispose cement bags after they are used, with options ranging from reusing, recycling or fully embracing biodegradable bags since bags left behind after constructing can be a menace in waste management efforts.

The rapid urbanisation does not have to come at a cost to our environment. The ensure this, we have to answer the big questions that are: what are the sources of energy for this urban population?

What are the main transportation modes? How is waste being management? And most importantly from where I sit, what building materials are being used? As urban populations grow, these aspects directly impact on greenhouse gas emissions. There is evidence to show that businesses embedding sustainability into their overall strategy and core operations are more successful.

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