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following key questions to be investigated in this study: • Will homebuyers value the features and benefits of ZEH? • How much are homebuyers willing to pay for ZEH? • What level of impact would further investment into R&D and public policies have on hastening the adoption of ZEH and the resultant energy savings by 2050? To answer these questions, the study will aim to: • Evaluate homeowner attitudes and opinions about the features and benefits of ZEH and their willingness to pay more for a home that has increased comfort and environmental performance and fixed monthly costs (accounting for a higher mortgage to pay for ZEH features, but no utility bill). • Determine at what year a ZEH becomes cost effective under various incentive scenarios. • Using technology diffusion curves, determine the projected rate of market adoption of ZEH and the final impact on energy consumption of the single-family housing stock to 2050. To achieve these goals, a combination of techniques was employed including: focus group and Internet-based market research; computer optimization techniques to calculate the optimal combination of today’s state-of-the-art energy efficiency and solar technologies to achieve ZEH; and calculations to project market diffusion of ZEH using market adoption curves and solar technology cost projections. The study was directed and conducted by independent sources, and its findings were endorsed by experts in the building industry, represented by the NAHB. The work at the NAHB Research Center was conducted through an NREL subcontract to McNeil Technologies. Mall in Washington, D.C. Activities include scoring algorithm development for the 10 contests; selection of expert judges for dwelling, architecture, engineering, Web sites, and house tours; review of team designs for code and regulation compliance; instrumentation system development, acquisition, and shakedown, as well as some installations of equipment; development of communications materials (brochures, media kits, official program, Web site materials, and graphics); review of educational exhibit designs; coordination of teams (including a face-to-face workshop in January with all teams and organizers and monthly conference calls); coordination of sponsors (including organizing and convening two sponsor meetings in Washington, D.C.); coordination of volunteers (including a procurement for management of volunteers); procurement of stagecraft and assembly of the solar village; and development of procedures for safe conduct of the entire event. These activities comprise the project thus far carried out by the NREL organizers and its subcontractors. We have prepared for crowds of more than 200,000 visitors to the Solar Decathlon and a massive media interest to view the future of solar energy and the next generation of solar practitioners and solar homes. For more information, see the Solar Decathlon Web site (www.solardecathlon.org). 3.2 Major Accomplishment: Adding Solar Analysis Capability to ENERGY-10 On May 5, 2005, ENERGY-10 Version 1.8 (a beta test version of this software) was released to a select community of building energy analysts via the NREL FTP site. ENERGY-10 E10 Online HELP has been updated for these new features. A new feature in Version 1.8 of ENERGY-10 is the ability to model and simulate the performance of a PV system that is either stand-alone or integrated with the building. This is an energy-efficient strategy, appearing as one of 14 strategies in the APPLY dialog box. This adds a powerful and unique capability to the program, allowing the user to study the hourly interaction between the building load and the PV array. The PV option contains 120 actual modules for user selection. The new PV capability in Version 1.8 will help ENERGY-10 users evaluate how a PV system will offset realistic building electrical loads, whereas very stylized loads have been used in other programs. If the PV system is integrated into the building skin, there will be thermal effects that are accounted for by changes in the building description, which is passed to the ENERGY-10 88 Task Title Solar Decathlon (NREL) Solar Decathlon (DOE/GO) PV in Buildings R&D ZEH Potential *FY 2004 funding 3. Results and Accomplishments FY 2005 Budget ($K) 1,270 166 100 180* 3.1 Major Accomplishment: Solar Decathlon 2005 During FY 2005, we prepared for successfully carrying out the 2005 Solar Decathlon, to be held September 29–October 19, 2005 on the National Photovoltaic R&D Technology DevelopmentPDF Image | DOE Solar Energy Technologies Program
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