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Academic Journal
Supply Chain

“Why have Voluntary Time-of-Use Tariffs Fallen Short in the Residential Sector?â€

We investigate the causes behind the underwhelming adoption of voluntary Time-of-Use (TOU) tariffs in the residential electricity market. TOU tariffs are deployed by utilities to better match electricity generation capacity with market demand by giving consumers price incentives to reduce their consumption when electricity demand is at its peak. However, consumers in residential electricity markets are heterogeneous in their consumption preferences. Hence, utilities face a trade-off when deploying voluntary TOU tariffs---to provide aggressive price incentives that will only appeal to consumers with flatter profiles or milder incentives to appeal to a larger proportion of the market. Using a game-theoretic model, we identify the key factors that determine the viability of voluntary TOU tariff deployment. On the supply side, the gap between wholesale prices in the peak and off-peak periods determines how much the utility stands to benefit by inducing demand response. On the demand side, heterogeneity within target consumer sets determines how much demand response the utility can induce with a certain price incentive. We show that misaligned incentives between utilities and regulators lead to underwhelming TOU tariff adoption compared to the socially desirable level, and that this under-adoption is worse when consumption preferences are uniformly distributed. We also evaluate the degree of cross-subsidization across tariff structures to identify their implications for equity among the different consumer types, and find that low levels of voluntary TOU adoption are less equitable than the default tariffs.
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Book
Supply Chain

“Wind Power Energy Technology and Environmental Impact Assessmentâ€

Power generation for the existing electrical grid is largely based on the combustion of fossil fuels. Global concerns have been raised regarding the environmental sustainability of the system due to life cycle impacts, including land losses from fuel extraction and impacts of combustion emissions. An approach to reduce carbon emissions of fossil fuel-based energy employs the conversion of wind energy to electrical energy. The work presented describes modern wind power plants and provides an environmental assessment of a representative wind park from a life cycle perspective. The empirical analysis uses commercially available data, as well as information from an existing wind power plant. The life cycle assessment (LCA) study for a modern wind farm in the northwestern U.S. found that environmental benefits of avoiding typical electricity production greatly outweigh the impacts due to wind turbine construction and maintenance. Effects of component reliability, varying capacity factors, and energy portfolio are explored.
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Academic Journal
Management

“Withholding Requests For Disability Accommodation: The Influence Of Individual And Situational Attributesâ€

Prior research suggests that people with disabilities often do not request needed workplace accommodations, though relatively few studies address which factors influence the extent of such potentially self-limiting behavior. Drawing on workplace disability, help seeking, and social identity literature, this study proposes and tests a model of request withholding frequency using survey data from 279 people with hearing impairments. Consistent with expectations, older employees withheld requests less frequently; however, there was no main effect of gender. Moreover, the strength of the relationship between age and request withholding frequency was significantly weaker when the disability was more severe and when the age of disability onset was earlier. Similarly, disability severity influenced the strength of the relationship between gender and request withholding frequency, though the age of disability onset did not. These findings are consistent with social identity theory, in that those individual differences and disability attributes that shape social identities also appear to affect decisions to request disability accommodation. In practical terms, managers need to not only be supportive of disability accommodation requests but also recognize that some employees, such as young persons with disabilities, may need even more support, and support in a form that affirms or minimizes threats to other salient identities, such as their youth. Additional implications for management research and practice are discussed.
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