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Dan Arvizu at WREF 2012

Dan Arvizu at WREF 2012






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  • The format of this session will be a series of brief presentations, followed by a moderated Q&A session with speakers forming a panel. The Renewable Electricity Futures Study (RE Futures) is an initial investigation of the extent to which renewable energy supply can meet the electricity demands of the contiguous United States over the next several decades. The analysis examines the implications and challenges of renewable electricity generation levels—from 30% up to 90%, with a focus on 80%, of all U.S. electricity generation from renewable technologies—in 2050. At such high levels of renewable electricity penetration, the unique characteristics of some renewable resources, specifically geographical distribution and variability and uncertainty in output, may pose challenges to the operability of the nation’s electric system. The study focuses on key technical implications of this environment, exploring whether the U.S. power system can supply electricity to meet customer demand on an hourly basis with high levels of renewable electricity, including variable wind and solar generation. The study also begins to address the potential economic, environmental, and social implications of deploying and integrating high levels of renewable electricity in the United States. The bulleted list below summarizes the major topics summarized from the Renewable Electricity Futures study and to be presented by the speakers:- The study structure and methodology, including detailed electric sector modeling.- Overview of renewable electricity technologies, current deployment levels, technical potential, and grid integration characteristics.- Future electricity demand and possibilities for energy efficiency and demand-side flexibility options.- Modeled scenarios with up to 80% renewable electricity by 2050. The scenarios include multiple deployment pathways that transition away from fossil consumption to high renewable generation levels. Hourly operation is also modeled to explore the grid challenges associated with integration variable generation.- Economic and environmental implications of the high renewable generation scenarios.
  • Upper Right: NREL designed and built a Net Zero Energy Habitat for Humanity House about 5 miles from the NREL campus. Over the two years that NREL monitored the building it actually produced 3000 kWh more than it used (accounting for gas use). Key energy features of the building are: a) Highly Insulated R-30 Walls and R-60 roof, b) passive solar window design, c) energy recovery ventilation system, e) 4kW PV array, f) Solar domestic hot water system backed up by an instantaneous gas water heater. Upper Middle: NREL has collaborated with industry to develop a number of Building Integrated PV (BIPV) systems that can work with shingle style roofs, standing seam metal roofs, and flat “built-up” roofs. NREL has also partnered with industry to develop a combined PV-Thermal system (shown on the house) that simultaneously cools the PV array, and preheats the solar thermal array providing electricity and hot water while reducing the roof area needed for the panels.Upper Right: NREL has collaborated with industry to produce a variety of evaporative and desiccant based coolers that are more efficient than vapor compression technology. NREL has also developed a revolutionary concept “DEVap” that combines desiccant and evaporative cooling in a single element making it possible to do highly efficient evaporative cooling anywhere in the country. Analysis for a DEVap unit in Phoenix showed 80% energy savings compared to a typical vapor compression air conditioner (even accounting for the 1 to 2 month humid monsoon period in the summer).Bottom Left: NREL has collaborated with industry to develop electrochromic windows that can be controlled to darken when the sun is not wanted, and lighten when the sun is beneficial.Bottom Middle: NREL has collaborated with industry partners to develop two low-cost polymer based solar hot water systems. The system in a box can be purchased at Home Depot and installed as a do-it-yourself project for about $1000.Bottom Right: NREL has developed building energy simulation and optimization tools that enable the most cost effective package of efficiency and renewable technologies to be determined for any given savings level, in any building type, in any climate. Other NREL developed tools assist developers to design energy efficient community layouts accounting for trees and other buildings.

Dan Arvizu at WREF 2012 Dan Arvizu at WREF 2012 Presentation Transcript

  • Realizing a Clean Energy Future World Renewable Energy Forum 2012 Dr. Dan E. Arvizu Laboratory DirectorNREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC.
  • Energy Context
  • National Energy Imperatives Reducing Stimulating dependence on clean-energy foreign sources companies and job growth Protecting resources and reducing global warming 3
  • 4
  • Shares of renewable energy sources in total global primary energy supply is still smallSource: IPCC Special Report Renewable Energy Sources (SRREN) 5
  • Renewable energy costs are still higher than existingenergy prices, but in various settings renewableenergy is getting competitive 6
  • Ranges of global technical potentials of renewable energy sources is enormousSource: IPCC Special Report Renewable Energy Sources (SRREN) 7
  • Global renewable energy primary energy supply from 164 long- 8 term scenarios versus fossil and industrial CO2 emissions. Modeling suggests many outcomes.Source: SRREN SPM, Figure SPM.9 8
  • Many expect electricity demand to grow faster than renewable energy generationSource: ExxonMobilehttp://www.exxonmobil.com/corporate/files/news_pub_eo_2010.pdf 9
  • MIT’s Future of Natural Gas Study Low-CO2 generation Gas 10
  • A Profound Transformation is Required Today’s Energy Sustainable Energy System System TRANSFORMATION• Dependent on non-domestic sources • Carbon neutral• Subject to price volatility • Efficient• Increasingly vulnerable energy • Diverse supply options delivery systems• 2/3 of source energy is wasted • Sustainable use of natural resources• Significant carbon emissions • Creates economic development• Role of electricity increasing • Accessible, affordable and secure 11
  • Energy Sector Challenges R&D Investment Drives Innovation Asset Utilization Capital Intensive with Long National Strategies Driving Shaping the Market Energy Market Life Cycles 12
  • RE Sector Capacities Vary by Region Source: REN21 (2011) 13
  • RE has achieved varying degrees of penetrationCountry % Renewable Generation (2010)Australia 8%China 19% Highest penetration onDenmark 34% annual basisGermany 18%India 15%Ireland 13%Mexico 18%Spain 34%Thailand 8%United Kingdom 7%United States 11%Source: U.S. EIA, International Energy Statistics 14
  • As a result, different settings for RE integration Percentage of Electricity Generation by Type, 2010 Australia Denmark Germany Australia Nuclear Hydroelectric Geothermal Wind Ireland Spain United States Solar, Tide and Wave Biomass and Waste Total Conventional ThermalSource: U.S. EIA, International Energy Statistics 15
  • Renewable Portfolio StandardsApril 2012Source: DSIRE http://www.dsireusa.org/summarymaps/index.cfm?ee=1&RE=1 16
  • Renewable Share of Total Generation by StateUp Across the United StatesSource: U.S. Energy Information Administration, Form EIA-923, Power Plant Operations Report.Notes: Non-hydroelectric renewables include generation from wind, solar, geothermal, and other renewable sourcessuch as wood and wood wastes, municipal solid wastes, landfill gas, etc. Data for 2011 are preliminary. 17
  • Specific Implementation Challenges• Legal, market, and institutional barriers—Increasing power system flexibility needed to integrate variable RE (e.g., through larger balancing areas, new market rules) may require significant ecosystem-wide changes• Coordination—Due to the involvement of multiple agencies and jurisdictions, developing and implementing a shared vision could be challenging• Public support—The public may not understand or support actions necessary to integrate renewables• Customizing solutions—There is no one-size-fits-all solution to integrating variable renewables; countries need to determine the most appropriate combination of approaches 18
  • High-Penetration Renewables New study to be presented and discussed in WREF Thursday panel session 19
  • All regions of the country could contribute substantialrenewable electricity supply in 2050 20
  • Innovation, Integration, & AdoptionReducing Investment Risk• Enable basic and applied clean energy technology innovation• Accelerate technology market introduction and adoption• Integrate technology at scale• Encourage collaboration in unique research and testing “partnering” facilities• Provide analysis and expertise to inform decisions 21
  • Status of the Technologies
  • Multiple Promising PV Technologies 20x-100x 500x Cu(In,Ga)Se2 ~ 1-2 um c-Si ~ 180 um 23
  • Wind Technology Innovation• Modular large components – blades, drivetrains, and tall towers• Advanced drivetrain power conversion systems – superconducting direct drive generators• Flexible, ultra-large rotors and systems• Active controls for structural load reduction, improved wind plant performance, and grid-friendly operation• Floating offshore wind turbines• Airborne wind power systems 24
  • Biofuels InnovationNew conversion technologies are being developed, offering thepossibility of revolutionary, high volume methods for producing biofuelhydrocarbon fuels for our trucks, trains, ships, and aircraft . . . Biological Chemical Catalytic Pyrolysis/Bio-Oil Conversion Conversion Pathways Heterotrophic Algae Conversion Hybrid Conversion Technologies 25
  • Transportation Innovation Portfolio of technologies leading to 54.5 mpg Low rolling resistance tiresDegree of electrification Start/stop Regenerative braking(power electronics &energy storage ) 8 speed transmissionsElectric infrastructure Electric powered steeringLight weighting Variable Improved Diesel powered & or cylinder mgmt aerodynamics Alternative Fuels, H2Turbocharging, direct fuel injection, advanced combustion 26
  • Buildings InnovationHigh Performance Buildings BIPV Products & PV-T Array Compressorless CoolingElectrochromic Windows Polymer Solar Water Heaters Computerized optimization & simulation Tools 27
  • Efficiency/Integration InnovationBuildings• Whole building systems integration• Computerized building energy optimization tools• Advanced HVAC (Heating Ventilating and air conditioning)• Cost effective ultra energy efficient retrofitsGrid IntegrationInterconnection Standards• IEEE Standards Development• Standards Testing and ValidationSmart-Grid Data HubRE Grid Integration• Power Electronics for Interconnection monitoring and control• Grid-to-vehicle interfaceAdvanced Vehicles• Fuels utilization• Component technologies• Electric vehicle-to-grid interface 28
  • To achieve a clean energy vision, we must… • Invest in innovation • Invent the future we desire • Improve access to capital • Partner on a global scale 29
  • Visit us online at www.nrel.gov May 2011 30