Green infrastructure

Module topical coverage

• Nature-based solutions
• Green energy
• Green materials
• Sustainable Urban Drainage Systems (SUDS)

Introduction

Green infrastructure centres on integrating nature-based solutions, energy-efficient technologies, and sustainable design principles into infrastructure to deliver resilient, future-ready solutions to the most pressing global problems.

Green infrastructure development goes beyond mitigating environmental harm, to actively restore ecosystems, enhance urban liveability and build structural resilience against both slow-onset and sudden climate hazards. Renewable energy systems, sustainable materials and adaptive drainage approaches, are just a few examples of such solutions.

As cities expand and climate uncertainties intensify, the need to reimagine infrastructure through the lenses of nature-based solutions is imperative. Nature-based solutions (NbS) is an umbrella term that encompasses the ‘actions to protect, sustainably manage and restore natural and modified ecosystems in ways that address societal challenges effectively and adaptively, simultaneously benefiting people and nature’ ¹.

NbS such as flood regulation, temperature moderation, water purification and habitat connectivity can offer solutions at lower lifecycle costs, while delivering extensive co-benefits for biodiversity and people. For instance, green energy not only reduces emissions but also underpins new infrastructure typologies, from grid-connected renewables to distributed micro-generation, that are more robust in a changing climate and offer greater system flexibility.

The sustainability of new and retrofitted infrastructure is also critically dependent on the materials employed. Innovative green materials, from recycled steel and rammed earth to mycelium composites and novel concrete blends, are reducing the carbon footprint of buildings and networks while fostering circular economies.

As urban flood risk grows, Sustainable Urban Drainage Systems (SUDS) have become central to managing runoff, restoring more natural hydrological cycles, and enhancing city landscapes with green corridors and multifunctional public spaces.

This module explores the links between infrastructure development and nature, recognising that the future of liveable, thriving communities depends on green approaches that deliver environmental, economic and social dividends.

¹ As defined by the International Union for Conservation of Nature.