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Ensuring urban water security through better understanding of the water-energy-food nexus
ASEM Seminar on Sustainable Management of Water Resources in the Context of Urbanization
May 22 2014, Changsha City, Hunan Province, China
Josh Weinberg
Stockholm International Water Institute
About SIWI
The Stockholm International Water Institute (SIWI) is a policy institute that contributes to international efforts to combat the world’s escalating water crisis.
•Office in Stockholm, Sweden
•60 staff members + 10 associated experts
•Non-profit, politically neutral
•Founded in 1991
•Supported by the Swedish government, City of Stockholm and founders of the Stockholm Water Prize.
•Programmes and activities also funded by multi- and bilateral donors and international organisations/agencies.
World Water Week in Stockholm
• The annual meeting place for the planet’s most urgent water-related issues
• Over 2,500 participants, representing experts, practitioners, decision makers and business innovators from around the globe
• Exchange ideas, foster new thinking and develop solutions
Thematic areas
– Water governance
– Transboundary water management
– Climate change and water
– Water, food and energy nexus
– Water economics
Introduction to CEWP
• Promotes policy dialogue, joint research and business development in the water sector between EU and China.
• Activities are organized within three work areas o Rural water challenges
o Urban water challenges
o River Basin and Flood Management
Ministry of Water Resources of the People’s Republic of China and the Presidency of the Council of the European Union, represented by the Danish Minister of the Environment launched CEWP at the 6th World Water Forum in Marseille, France, March 2012 by signing of a Joint Statement.
Work Area 3 River Basin and Flood Risk Management
Work Area 2 Urban Water Challenges
Work Area 1 Rural Water Challenges
POLICY DIALOGUE
RES
EAR
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BU
SIN
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Structure
6
Ensuring Urban Water Security: Water-Energy-Food Nexus
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Programme Objectives:
• Promote opportunities for business and policy innovation in water, energy, food nexus
• Exchange between Chinese and European authorities on state of the art approaches and technologies
• Improve methods for analyzing synergies and conflicts between the major water uses of domestic, industrial, agricultural and energy production in developing urban areas
• Improved policy coherence between water and energy in China and the EU
Several activities underway or under development:
• Taihu Basin Urban Water Security Programme
• Managing water risks in China’s energy sector
• Managing energy risks in China’s Urban Water Sector
• Sustainable and intensive agriculture for urban areas
Water-Energy-Food Nexus
Nexus snapshots
•Global water demand (in terms of water withdrawals) is projected to increase by some 55% by 2050 (WWDR 2014)
•Global energy demand to grow by one-third by 2035 - with fastest growth in Asia at 2.3 per cent per annum. (IEA 2010)
•US & EU- 40-50 % water withdrawal for energy (Granit & Lindström, 2011).
•Food production and supply chains use 30% of total global energy demand (UNECE 2013)
Global trends and drivers - Increasing need for water, energy, food
Global trends and drivers - Increasing food demand – available land area for agriculture is reducing
FAO, 2011
Global trends and drivers - Water scarcity: Aggregated global water supply gap, estimated to be 40% by
2030 assuming no efficiency gains
More than 75% of river flows are allocated to agriculture, industries or domestic purposes
Water resources can be abundant but lack of investment makes them unavailable for exploitation
Increased climate variability intensifies existing problems
Water insecurity is the greatest resource risk to global economy
1. Energy production
•Water use in all steps of the thermal energy value chain
•Water storage for hydropower
•Water for bio fuels
2. Primary production
•Agriculture
(irrigation & rainfed)
•Forestry
•Fisheries
3. Industry & urbanization
• Domestic use
• Industrial use
• Waste water treatment
• Tourism
4. Environmental services
• Water quality management
• Biodiversity & conservation
• Flood & drought protection
• Navigation
Water-Energy-Food Nexus Water has multiple uses – all key for sustainable economic growth
Urbanization is driving demand for energy, food and water
60-80% of commercial energy consumption in cities Water needs for energy production will grow at twice the rate of energy demand. Urban lifestyles increase consumption of water intensive foods
Common Urban Nexus Challenges in China, Europe, and Asia
- Growing water and energy demand
resulting from urban growth
- Coherence of energy and water policy
- Linking resource management to
spatial planning
- Growing water demand for energy
production
- Need for optimisation of urban
infrastructure for water and energy
efficiency
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- Technical knowledge gap
on water risks in
unconvential energy
Opportunities for
Technical and Policy Innovations
• Wastewater and food waste to energy
• Less water for energy
• Less energy for water
• Modeling and data
• Reduce waste and improved resource efficiency
Practical Approaches to Nexus Planning
Conclusions: Policy and research priorities
23
The water-energy-food nexus approach is vital for sustainable intensification. Resource accounting and policy mapping of those sectors, leading to analyze and clarify the trade-offs and synergies across sectors. Coordinate energy and water planning for cities. In the Chinese context, for example, this would require integrating the strategies for achieving the energy efficiency targets and the “three red-lines” of water resource management. Identify practical institutional and governance structures that promote the implementation of nexus strategies and capacity building
Link to spatial planning and with local policy makers. Assessment and diagnois of physical, monetary and distributive impacts of competing water uses provides planners relavant information for decision making. Use the ‘nexus lens’ in research and innovation strategies. By outlining the key resources conflicts faced across sectors; and potential efficiency gains from the application of specific technologies, a nexus approach can point to where innovations can be expanded and developed.
Thank you – and welcome to World Water Week 2014!
Energy and Water