Abstract
While distribution systems deliver power to buildings using alternating current (AC), the loads in commercial buildings have increasingly shifted to those using direct current (DC) power. In addition, on-site generation, such as rooftop solar (which provides a DC source of electricity), is becoming more common in commercial buildings. As a consequence, numerous DC-to-AC and AC-to-DC conversions occur in commercial buildings, each of which results in wasted energy. This makes converting building electrical systems from AC to DC power an attractive energy efficiency measure. In the present study, barriers and advantages of DC power in commercial buildings were examined by interviewing personnel who worked on four commercial construction projects in Colorado. The cases, two new construction and two retrofits, varied in their level of successful implementation. The participants included general contractors, facilities managers, engineers, and financial officers. Interviews were coded for statements about people, technology, and the construction process. The results revealed that successful implementation required an owner who championed the project, along with a team that demonstrated positive motivations (e.g., enjoying a challenge, accepting uncertainty). Technological issues faced by the projects were largely due to limited availability and incompatibility of DC parts. Finally, pre-construction processes (financing, bidding, and contracting) emerged as important differentiators between successful and unsuccessful projects. These findings provide a roadmap for increasing successful implementation of DC power in commercial construction projects.
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References
Birt, L., Scott, S., Cavers, D., Campbell, C., & Walter, F. (2016). Member checking: a tool to enhance trustworthiness or merely a nod to validation? Qualitative Health Research, 26(13), 1802–1811. https://doi.org/10.1177/1049732316654870.
Business Wire. (2013). Direct current power systems for commercial buildings to reach nearly $10 billion in market value by 2020, forecasts Navigant Research. Webpage. https://www.businesswire.com/news/home/20131203005617/en/Direct-Current-Power-Systems-Commercial-Buildings-Reach. Accessed 14 July 2020.
Business Wire. (2019). Navigant Research report shows the market for direct current power in energy efficient buildings is expected to reach $611 million in 2028. Webpage. https://www.businesswire.com/news/home/20190418005023/en/Navigant-Research-Report-Shows-Market-Direct-Current. Accessed 14 July 2020.
Chan, A. P. C., Darko, A., Ameyaw, E. E., & Owusu-Manu, D.-G. (2017). Barriers affecting the adoption of green building technologies. Journal of Management in Engineering, 33(3), 1–12. https://doi.org/10.1061/(ASCE)ME.1943-5479.0000507.
Cidell, J. (2009). Building green: the emerging geography of LEED-certified buildings and professionals. The Professional Geographer, 61(2), 200–215.
Faiers, A., Neame, C., & Cook, M. (2007). The adoption of domestic solar-power systems: do consumers assess product attributes in a stepwise process? Energy Policy, 35(6), 3418–3423. https://doi.org/10.1016/j.enpol.2006.10.029.
Garbesi, K., Vossos, V., & Shen, H. (2011). Catalog of DC appliances and power systems. Ernest Orlando Lawrence Berkeley National Laboratory. https://eta.lbl.gov/sites/default/files/publications/catalog_of_dc_appliances_and_power_systems_lbnl-5364e.pdf. Accessed 1 October 2020.
Gerber, D., Vossos, V., Feng, W., Marnay, C., Nordman, B., & Brown, R. (2018). A simulation-based efficiency comparison of AC and DC power distribution networks in commercial buildings. Applied Energy, 210, 1167–1187. https://doi.org/10.1016/j.apenergy.2017.05.179.
Gerber, D. L., Liou, R., & Brown, R. (2019). Energy-saving opportunities of direct-DC loads in buildings. Applied Energy, 248, 274–287. https://doi.org/10.1016/j.apenergy.2019.04.089.
Glasgo, B., Azevedo, I. L., & Hendrickson, C. (2018). Expert assessments on the future of direct current in buildings. Environmental Research Letters, 13(7). https://doi.org/10.1088/1748-9326/aaca42.
Hoffman, A. J., & Henn, R. (2008). Overcoming the social and psychological barriers to green building. Organization & Environment, 21(4), 390–419 https://www.jstor.org/stable/26162298.
International Organization for Standardization. (2019). Road vehicles, supply voltage of 48V: electrical requirements and tests. https://www.iso.org/standard/71607.html. Accessed 1 October 2020.
Karakaya, E., Hidalgo, A., & Nuur, C. (2014). Diffusion of eco-innovations: a review. Renewable and Sustainable Energy Reviews, 33, 392–399. https://doi.org/10.1016/j.rser.2014.01.083.
Killip, G., Owen, A., & Topouzi, M. (2020). Exploring the practices and roles of UK construction manufacturers and merchants in relation to housing energy retrofit. Journal of Cleaner Production, 251, 119205. https://doi.org/10.1016/j.jclepro.2019.119205.
Kontokosta, C. E. (2016). Modeling the energy retrofit decision in commercial office buildings. Energy and Buildings, 131, 1–20. https://doi.org/10.1016/j.enbuild.2016.08.062.
Marchionini, B. & Zheng, S. (2018). Direct current in buildings: a look at current and future trends. National Electrical Manufacturers Association. https://www.nema.org/Standards/ComplimentaryDocuments/NEMA DCP 1-2018 WATERMARKED.pdf Accessed 5 July 2020.
Meyer, G. (2004). Diffusion methodology: time to innovate? Journal of Health Communication, 9(sup1), 59–69. https://doi.org/10.1080/10810730490271539.
Meyer, M., Cross, J. E., Byrne, Z., Franzen, B., & Reeve, S. (2013). Green school building success: innovation through a flat team approach. In R. L. Henn & A. J. Hoffman (Eds.), Constructing green: the social structures of sustainability (pp. 219–238). Cambridge: MIT Press.
Moore, G. (2014). Crossing the chasm: marketing and selling high-tech products to mainstream customers (3rd ed.). New York: HarperCollins Publishers.
Murtagh, N., Roberts, A., & Hind, R. (2016). The relationship between motivations of architectural designers and environmentally sustainable construction design. Construction Management and Economics, 34, 61–75. https://doi.org/10.1080/01446193.2016.1178392.
Nogee, A., Clemmer, S., Paulos, B., & Haddad, B. (1999). Powerful solutions: 7 ways to switch America to renewable electricity. Cambridge.: Union of Concerned Scientists.
Pinto, J. K., & Slevin, D. P. (1989). The project champion: key to implementation success. Project Management Journal, 20(4), 15–20.
Porter, S. F., Denkenberger, D., Mercier, C., May-Ostendorp, E. P., & Turnbull, P. (2014). Reviving the war of currents: opportunities to save energy with DC distribution in commercial buildings. Conference paper. ACEEE Summer Study on Energy Efficiency in Buildings. https://www.kannahconsulting.com/wp-content/uploads/2016/08/3-817.pdf. Accessed 1 October 2020.
Puko, T. (2013). Pitt Ohio opts to use revived electric technology. Webpage. Trib Total Media. https://archive.triblive.com/business/local-stories/pitt-ohio-opts-to-use-revived-electric-technology/. Accessed 14 July 2020.
Rabin, B., Brownson, R., Haire-Joshu, D., Kreuter, M., & Weaver, N. (2008). A glossary for dissemination and implementation research in health. Journal of Public Health Management and Practice, 14(2), 117–123.
Rogers, E. M. (2003). Diffusion of innovations (5th ed.). New York: Free Press.
Sanderford, A. R., Overstreet, G. A., Beling, P. A., & Rajaratnam, K. (2015). Energy-efficient homes and mortgage risk: crossing the chasm at last? Environment Systems and Decisions, 35, 157–168. https://doi.org/10.1007/s10669-015-9535-8.
Silk, K. J., Hurley, A., Pace, K., Maloney, E. K., & Lapinski, M. (2014). A diffusion of innovations approach to understand stakeholder perceptions of renewable energy initiatives. Science Communication, 36(5), 646–669. https://doi.org/10.1177/1075547014549891.
Sinopoli, J. (2012). Using DC power to save energy and end the war on currents. https://www.greenbiz.com/article/using-dc-power-save-energy-and-end-war-currents. Accessed 1 October 2020.
Ton, M., Fortenbery, B., & Tschudi, W. (2008). DC power for improved data center efficiency. Lawrence Berkeley National Laboratory. http://www.chip2grid.com/docs/DCDemoFinalReport.pdf. Accessed 1 October 2020.
U.S. Department of Energy [DOE]. (2008). Energy efficiency trends in residential and commercial buildings. https://www1.eere.energy.gov/buildings/publications/pdfs/corporate/bt_stateindustry.pdf. Accessed 1 October 2020.
U.S. Department of Energy [DOE]. (2015a). A common definition for zero energy buildings. https://www.energy.gov/sites/prod/files/2015/09/f26/bto_common_definition_zero_energy_buildings_093015.pdf Accessed 1 October 2020.
U.S. Department of Energy [DOE]. (2015b). Powering new markets: utility-scale photovoltaic solar. https://www.energy.gov/sites/prod/files/2015/02/f19/DOE_LPO_Utility-Scale_PV_Solar_Markets_February2015.pdf Accessed 1 October 2020.
U.S. Energy Information Administration [EIA]. (2015). A look at the U.S. commercial building stock: results from EIA’s 2012 commercial buildings energy consumption survey (CBECS). https://www.eia.gov/consumption/commercial/reports/2012/buildstock/ Accessed 5 July 2020.
U.S. Energy Information Administration [EIA]. (2018). Frequently asked questions: how much energy is consumed in U.S. residential and commercial buildings? https://www.eia.gov/tools/faqs/faq.php?id=86&t=1. Accessed 1 October 2020.
Vossos, V., Gerber, D., Bennani, Y., Brown, R., & Marnay, C. (2018). Techno-economic analysis of DC power distribution in commercial buildings. Applied Energy, 230, 663–678. https://doi.org/10.1016/j.apenergy.2018.08.069.
Vossos, V., Heard, R., Mannarion, E., Johnson, K., Gerber, D., Khuttar, M., et al. (2019). Direct current as an integrating and enabling platform for zero-net energy buildings. Project report. California Energy Commission. https://ww2.energy.ca.gov/2019publications/CEC-500-2019-038/CEC-500-2019-038.pdf. Accessed 16 July 2020.
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The research reported in this publication was supported by The Energy Institute at Colorado State University.
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Aloise-Young, P.A., Ross, E.C., Dickmann, E.M. et al. Overcoming barriers to direct current power: Lessons learned from four commercial building case studies. Energy Efficiency 14, 10 (2021). https://doi.org/10.1007/s12053-020-09920-1
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DOI: https://doi.org/10.1007/s12053-020-09920-1