1 / 7

Energy for Water Management and Production

Energy for Water Management and Production. John J. Easton, Jr. Vice President of International Programs Edison Electric Institute Bi-Regional WEC Forum Mexico City, Mexico November 3, 2008. The Energy – Water Connection.

arleen
Download Presentation

Energy for Water Management and Production

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Energy for Water Management and Production John J. Easton, Jr. Vice President of International Programs Edison Electric Institute Bi-Regional WEC Forum Mexico City, Mexico November 3, 2008

  2. The Energy – Water Connection • The electric industry is the second largest user of water in the United States • Production from fossil fuels and nuclear energy uses 190,000 million gallons of water daily, accounting for 39% of all freshwater withdrawn nationwide • Each kWh generated from coal uses 25 gallons of water • Approximately 80% municipal water processing and distribution costs are for electricity • Increased electricity production and usage may lead to higher levels of GHG, which may impact availability of water to producers in certain regions Source: Sandia National Laboratories, EPRI

  3. The Energy – Water Connection

  4. Energy Needs of Water Services • Energy is required to: • lift water from depth in an aquifer • pump water in pipes • treat waste water • desalinate brackish or sea water • Reverse Osmosis • Distillation • Globally, commercial energy consumed for delivering water is more than 26 quads, 7 percent of total world consumption • A considerable amount of water is also delivered by utilization of human energy – e.g., use of treadle pumps and water transport by women and children Source: Dr. Alan Hoffman, US Dept of Energy

  5. Water-Energy Use in California: An Interesting Example • Energy demand associated with water use in CA is high for three reasons: • most of demand is located at considerable distance from source • water is heavy and moving it is energy intensive • water used for consumption must be treated, another energy intensive process • Annual water consumption is over 40 million acre-feet (one acre-foot = 326,000 gallons) • Energy required annually to pump and treat water exceeds 15,000 GWh, approximately 6.5% of total electricity used in the state per year Source: Dr. Alan Hoffman, US Dept of Energy

  6. Innovations • Minimize the impact of energy production on water quality and availability • Reduce the energy required to treat, pump and distribute water, including improvements in wastewater treatment processes and irrigation technology • Treating and reusing “non-potable process (“gray”) water in power production • Accessing currently unused water sources such as saline aquifiers • Delivering water and energy more efficiently to prevent losses

  7. Factors Increasing Public Supply/Treatment Energy Consumption • Age of water delivery system • Restrictions on water consumption may increase unit electricity consumption; economies of scale may be lost • Requirements for improved treatment • Advanced wastewater treatment results in 3 times the electricity use of a conventional trickling filter approach Source: EPRI

More Related