Integrated Resource Management in Asian Cities: the Urban NEXUS (Water / Energy / Food Security / Land Use) Financed by: BMZ (German Federal Ministry for Economic Cooperation & Development) Political Partner: UN ESCAP United Nations Economic & Social Commission Asia Pacific Implementation Partner: Local Governments for Sustainability (ICLEI South Asia & South East Asia) 1 st Phase 2013-2015 2 nd Phase 2016-2018 Implemented by: GIZ German International Cooperation
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Integrated Resource Management
in Asian Cities: the Urban NEXUS
(Water / Energy / Food Security / Land Use)
Financed by:
BMZ
(German Federal Ministry
for Economic Cooperation &
Development)
Political Partner:
UN ESCAP
United Nations Economic
& Social Commission
Asia Pacific
Implementation Partner:
Local Governments for
Sustainability
(ICLEI South Asia & South
East Asia)
1st Phase 2013-2015
2nd Phase 2016-2018
Implemented by:
GIZ
German International
Cooperation
The Nexus approach highlights the interdependencies between achieving
water, energy and food security, trying to ensure an ecologically sustainable use
of globally essential resources.
It is based on an understanding of the synergies and competing uses of
water, land and energy-related resources.
The Nexus approach is a fundamental shift, from a sectoral approach to a
cross-sectoral, coherent and integrated perspective.
The Nexus approach challenges existing structures, sector policies and
procedures at global, regional, national provincial and local level.
The three "supply securities" water, energy and food depend on ecosystems
and on each other and should be used and protected in a balanced manner.
Introduction
Implemented by
Implemented by
Energy and water are interlinked:
• Water is used in the production of nearly all types of energy (coal,
geothermal, hydro, oil and gas, nuclear),
• Energy is the dominant cost factor in the provision of water and
wastewater services (extracting and conveying water, treating water,
distributing water, using water and collecting and treating wastewater).
Energy can account for up to 30% of total operating costs of water and waste
water utilities.
On average 15% of the world’s total water withdrawals are used for energy
production.
Water and energy interconnected
Robert C. Brears is the author of Urban Water Security (Wiley)