merging water & energy efficiency: a project of collaboration alliance for water efficiency...
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MERGING WATER & ENERGY EFFICIENCY: A PROJECT OF COLLABORATION
Alliance for Water EfficiencyAmerican Council for an Energy-Efficient Economy
Background 30 years of energy conservation and
increases in efficiency of energy use. 20 years of water conservation and increases
in efficiency of water use. Saving a drop of water saves energy; saving
a unit of energy saves water. Yet the two communities have historically not
worked much together. It is time to change that!
Water and Energy are linked
National Water Withdrawals
Source: US Geological Survey 2005
US Daily Water Withdrawals
49%
31%
11%
6% 3%
US Daily Water Usage
Power plant cooling
irrigation
public supply
industrial & mining
livestock & aquaculture
Total = 410 Billion Gallons in 2005
Source: US Geological Survey 2005
Energy Intensities of Water
Source: California Energy Commission, 2005
The Carbon Footprint of Water
River Network 2009
15% of U.S.Carbon
The Project Joint effort of AWE and ACEEE.
Supported by funding from the Turner Foundation.
Purpose: to identify the major research, program, and policy needs of the water-energy nexus for decision-makers and funders.
Establish the beginning of a national long term energy-water community.
http://www.allianceforwaterefficiency.org/blueprint.aspx
“Blueprint” Concept Pull together key decision-makers into a
strategic planning discussion. Identify issues and areas of mutual future
endeavor. Facilitate discussion in four key areas:
programs, policies, research, and codes and standards.
Gather recommendations. Publish report of stakeholder findings. Identify areas of immediate needed action.
December 9, 2010 Workshop Over 75 key
organizations and individuals in the water and energy communities were identified and invited.
Broad spectrum of interest groups were desired.
December 9, 2010 Workshop All 75 invited to a pre-workshop survey of
issues. 54 individuals representing 41 diverse
organizations attended a day-long workshop in Washington DC.
31 themes identified with votes on priority areas.
8 Main Themes emerged with recommendations.
5 Priority areas for immediate action identified.
8 Recommendation Themes1. Increase the level of collaboration between
the water and energy communities in planning and implementing programs.
2. Achieve a deeper understanding of the energy embedded in water and the water embedded in energy.
3. Learn from and replicate best practice integrated energy-water efficiency programs.
4. Integrate water into energy research efforts and vice versa.
8 Themes of Recommendations5. Separate water utility revenues from unit
sales, and consider regulatory structures that provide an incentive for investing in end-use water and energy efficiency.
6. Leverage existing and upcoming voluntary standards that address the energy-water nexus.
7. Implement mandatory codes and standards that address the energy-water nexus.
8. Pursue education and awareness opportunities for various audiences and stakeholders.
1: Increase Collaboration1-A: Establish ongoing water & energy
working groups to increase cooperation and to share best practices.
1-B: “Just add water”: integrate water & wastewater into existing energy efficiency programs.
1-C: Incentivize residential & business efficiency programs to gain additional savings related to embedded water & energy, and develop methodologies that fairly attribute the savings and costs.
1-D: Integrate energy & water audit practices, and provide integrated retrofitting recommendations, rebate programs and outreach & education efforts.
2: Embedded Energy & Water2-A: Develop methodologies for measuring
embedded water and energy and for developing water and energy factors to help drive programs, policies, and technology development & implementation. A national database is needed!
2-B: Develop baseline estimates of total energy use by water and wastewater utilities and estimates of water use by electric generation technologies.
3: Replicate Best Practices3-A: Survey existing programs to identify
examples of best practices programs exploring the water-energy nexus. Identify elements of success and replication potential.
3-B: Develop framework for collecting integrated data on energy and water savings, including a uniform format and metrics.
3-C: Inventory and assess current work related to green infrastructure and water efficiency.
4: Integrate Water & Energy4-A: Identify high priority research needs
by building a database of existing nexus-related research to identify gaps.
4-B: Assess the need for combined water and energy efficiency in various regions of the country depending upon resource constraints.
4-C: Develop water and energy foot printing methods for facility management, land use planning, and new development permitting.
5: Water Pricing Reform5-A: Prepare a report for local and state
policymakers and water utilities on lessons learned from energy experiences and on rate-related barriers to efficiency program implementation.
5-B: Conduct an energy-water decoupling pilot study for assessing options and issues for separating revenues and sales volumes.
5-C: Provide technical assistance related to rate setting.
6: Leverage Voluntary Standards6-A: Leverage existing and upcoming
national standards that fully link energy and water management.
6-B: Develop recommendations for better integrating water and energy efficiency into green codes, long-term building maintenance, and whole building rating systems.
6-C: Develop model land-use and planning codes.
7: Implement Mandatory Codes7-A: Explore opportunities to expand
products covered by DOE equipment standards to include more water-using products and to take into account direct and indirect water impacts when assessing efficiency opportunities.
7-B: Modify national model building codes to better incorporate water efficiency.
8: Pursue Education and Awareness8-A: Undertake utility education, outreach,
technical assistance and training programs to educate water and wastewater professionals on energy efficiency tools and technologies.
8-B: Create partnerships between energy and water utilities, industry organizations, and NFPs for joint public messaging.
8-C: Development knowledge-sharing programs on high- performance systems and designs for system operators, land use planners, and engineers to help them optimize energy and water efficiency.
8-D: Convene seminars for policymakers.
The Policy Agenda Implementing the preceding
recommendations will require intense collaboration among stakeholders and advocates.
Also will require government engagement and leadership.
Blueprint contains 9 needed policy directions for the national, state, and local levels.
Policy Needs
1. Regulatory structures and incentives that reward water and energy efficiency.
2. DOE Appliance and Equipment Standards for water-using appliances and equipment.
3. Building Codes that recognize water and energy efficiency.
4. Specific energy-water elements to add to existing legislation.
5. Tax incentives for water and energy efficiency.
Policy Needs
6. Collection of water and energy end-use data by federal agencies.
7. Better communication between regulatory and governance bodies.
8. Collaboration among federal, state, and local agencies in integrating water and energy in grant funding research, regulation, and technical assistance.
9. Coordination in new power plant siting or significant expansion of existing plants.
Moving Forward: 5 Key Priorities1. Develop baseline of total energy use by
water & wastewater utilities and water use by electric utilities.
2. Incorporate cost-effective energy/water measures into building codes, equipment standards, and tax credits.
3. Survey existing programs for best practices.4. Prepare a report for local and state
policymakers addressing the rate-related barriers in water.
5. Establish ongoing water and energy workgroups.
Baseline Estimates: Water UtilitiesHow much energy is used by water &
wastewater utilities? California is only state with comprehensive
data, gathered by California Energy Commission in 2005. 19% of California’s electric use related to water 32% of California’s gas load related to water heating
What are the numbers for other regions of the country?
Need to assemble data from utility electric bills and segregate by water source and treatment.
Baseline Estimates: Energy UtilitiesHow much water is used in generating
electricity? Important issue in state and regional
resource planning and power plant design & siting.
USGS report every 5 years – most recently for 2005: 49% of U.S. water withdrawals for thermoelectric power gen.
(201 Bgal/day) 41% of freshwater withdrawals (143 Bgal/day) U.S. Average of 23 gallons per kWh
Large variations by cooling type: Open-loop (43% in U.S.) – high use (50-65 gal/kWh), low
consumption (~1%) Closed-loop w/ towers (42%) – low use (1-2 gal/kWh), high
consump. (~70%) Closed-loop w/ ponds (14%) – mid use (14-24 gal/kWh) &
variable consump.
Regional Variations
Source: USGS. 2009. “Estimated Use of Water in the United States in 2005”
2005 Freshwater withdrawals for thermoelectric power production
Need for Better Regional Data
Source: J. Macknick, R. Newmark, and KC Hallett. 2011. “Future Projections of Water Demands for Energy”
Policy and technology choices can result in divergent regional water impacts. Ex. Macknick, et al. 2011 (NREL) – ReEDS modeling
of water withdrawal and consumption impacts of 21% increase in generation from 2006 to 2030 using different technology mixes.
Base case (BAU) All cooling towers scenario
Codes, Standards, and Tax Incentives Combined energy-water issues slip between
the cracks. Energy can be better addressed in IAPMO
code and water better integrated into IECC and ASHRAE 90.1.
Opportunities for upcoming new/revised equipment efficiency standards include clothes washers, dishwashers, toilets and showerheads.
Residential energy tax incentives expiring at end of 2011, for renewal investigate simple ways to include water efficiency in these programs (e.g. formula to convert water savings into energy savings).
Joint Efficiency Programs Although some energy utilities have
successfully promoted water efficiency programs, and vice versa, these programs have not yet been widely adopted.
Programs focus on water and wastewater treatment as well as building end uses.
We will highlight many of these programs and their lessons learned in a report aimed at utilities and regulators.
Embedded Energy in Water Pilots Nine joint pilot programs between California
electric & water utilities in 2008-09 to test the embedded energy connection
Purpose was to determine energy credit for “cold” water savings and potential for energy efficiency
Pilots with highest energy savings: System Leak Detection, Low Income High Efficiency Toilets
Other programs: Large Commercial, Recycled Water, Emerging Technologies for Water Pumping, Managed Landscapes
Source: http://www.energydataweb.com/cpucFiles/33/FinalEmbeddedEnergyPilotEMVReport_1.pdf
Embedded Energy in Water Pilots CPUC Calculator – identify programs made
cost-effective through partnerships and spread costs across water and energy utilities:
Source: http://www.aceee.org/proceedings-paper/ss08/panel11/paper12
Overcoming Utility Disincentives Report for local and state policy makers and
water utilities, covering:1. problems with current water rates,
particularly with regard to water efficiency programs which can lead to undercollection of fixed costs;
2. how some states address these issues for energy utilities with flat or increasing block rates, decoupling, lost base-revenue adjustments, and incentives;
3. recommendations on appropriate lessons and next steps for water utilities.
Joint Working Groups
Four working groups, following on the blueprint process, each based around one of our initial joint projects:
1. Codes, standards and tax incentives.2. Water utility disincentives and ways to
address them.3. Joint energy and water-saving programs.4. Research on energy-use connected to water
and water use connected to energy.
Coordinated Research There is a lot of work to do on the Water-
Energy nexus Coordination is needed to avoid duplication
and maximize impact of all efforts Coordinated funding is needed on both sides
Any Questions?
Download the Blueprint at: http://www.allianceforwaterefficiency.org/blueprint.aspx
Mary Ann Dickinson, Alliance for Water Efficiency 773-360-5100 maryann@a4we.org
Eric Mackres and Neal Elliott American Council for an Energy-Efficient Economy 202-507-4000 emackres@aceee.org and rnelliott@aceee.org
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