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| 1 |
ID:
132646
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2014.
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| Summary/Abstract |
This article offers the first national examination of the determinants of adoption of wind and solar energy generation on U.S. farming operations. The inclusion of state policies and characteristics in a multilevel modeling approach distinguishes this study from past research utilizing logit models of technology adoption which focus only on the characteristics of the farm operation. Results suggest the propensity to adopt is higher for livestock operations, larger farms, operators with internet access, organic operations, and newer farmers. The results find state characteristics such as solar resources, per capita income levels, and predominantly democratic voting increasing the odds of farm adoption. This research suggests the relevance of state policy variables in explaining farm level outcomes is limited, although in combination best practice net metering and interconnection policies-policies designed to encourage the development of small scale distributed applications-are shown to increase the likelihood of farm solar and wind adoption. The prevalence of electric cooperatives-which are often not subject to state renewable energy policies and often service farms-is negatively related with the propensity to adopt and suggests that policy design may be a factor
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| 2 |
ID:
179682
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About 1 in 10 rooftop solar photovoltaic (PV) customers who sign a contract to install a PV system cancel their contract before the system is installed. Although some cancelation risk is inherent in the solar industry, there may be ways to reduce cancelation volume, such as reducing project delays. Delays can occur at each stage of PV adoption processes, which take several weeks to months from contract signature to system operation. Using data from a recent survey of PV installers, we explore the factors that explain PV project delays and cancelations. The survey data suggest that PV adoptions take about 16 weeks, on average, from contract signature until system operation. Survey respondents consistently identified permitting, inspection, and interconnection (PII) processes as key drivers of project delays. Most respondents then suggested these PII-related delays increase contract cancelations. However, larger-scale installers report higher cancelation rates, and these installers rank changes in customer financial situations higher than PII-related delays as the main cause for cancelations. Most respondents also reported avoiding jurisdictions with particularly onerous PII requirements or charging more in these jurisdictions. On balance, the results provide a rationale for measures to streamline PII processes to reduce delays and potentially mitigate cancelation risk.
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| 3 |
ID:
175164
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Communities on the planet are faced with complex challenges: changing relations within and between human communities, changing relations with ecological and climatic conditions, and shifts in technology-human interconnections. The complex interconnections across issue areas – migration, environmental degradation and new technologies, for example – demand that scholars increasingly think across theories, paradigms, specialisms and disciplines. But how should we ‘hold things together’ as we try to make sense of complex realities in International Relations (IR)? This introductory article to the Special Issue ‘Facing human interconnections: thinking International Relations into the future’ discusses the open thematic of ‘human interconnections’ that is used to loosely structure the contributions. Analysis of human interconnections, as understood here, does not have a precise or fixed definition but is considered an open-ended notion with varied meanings and dimensions. Indeed, the authors engage it here in varied ways to explore their empirical, theoretical and political concerns. Yet, this notion also allows for interesting new questions to be posed on the potential and limits of IR as it faces the future, and debates around how we see interconnections between issue areas and ‘-isms’, how IR constructs ‘humans’ or ‘non-humans’ in interconnections, and what is at stake in bringing to our attention unacknowledged interconnections. Here we set out why human interconnection is an interesting notion to work with and why we need to keep its meaning open-ended. We also provide an account of six different orientations we observe amongst the authors tackling the dynamics of human interconnections in this Special Issue.
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| 4 |
ID:
092844
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2009.
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| Summary/Abstract |
The power system capacity adequacy has public good features that cannot be entirely solved by electricity markets. Regulatory intervention is then necessary and established methods have been used to assess adequacy and help regulators to fix this market failure. In regional electricity markets, transmission interconnections play an important role in contributing to adequacy. However, the adequacy problem and related policy are typically considered at a national level. This paper presents a simple model to study how the interconnection capacity interacts with generation adequacy. First results indicate that increasing interconnection capacity between systems improves adequacy up to a certain level; further increases do not procure additional adequacy improvements. Furthermore, besides adequacy improvement, increasing transmission capacity under asymmetric adequacy criteria or national system characteristics could create several concerns about externalities. These results imply that regional coordination of national adequacy policies is essential to internalise adequacy of cross-border effects.
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| 5 |
ID:
105735
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2011.
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| Summary/Abstract |
This paper deals with the practical problems related to long-term security of supply in regional electricity markets with transmission constraints. Differences between regulatory policies and market designs in terms of generation adequacy policies may distort the normal functioning of the neighboring markets, as well as the reliability of supply. We test the effect of heterogeneous regulatory design between two interdependent markets: energy-only market, price-capped market without capacity mechanisms and price-capped markets with forward capacity contracts obligation. We rely on a long-term market simulation model in system dynamics that characterizes expansion decision in a competitive regime. The results show that differences in market designs affect both price and reliability of supply in the two markets. We examine both the short and long terms effect, and how free-riding may occur where capacity adequacy policies are adopted in one market but not the other. The main finding is that the lack of harmonization between local markets in policies to ensure capacity adequacy may lead to undesirable side effects.
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| 6 |
ID:
099299
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2010.
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| Summary/Abstract |
Increased interconnection has been highlighted as potentially facilitating the integration of wind generation in power systems by increasing the flexibility to balance the variable wind output. This paper utilizes a stochastic unit commitment model to simulate the impacts of increased interconnection for the island of Ireland with large penetrations of wind generation. The results suggest that increased interconnection should reduce average prices in Ireland, and the variability of those prices. The simulations also suggest that while increased interconnection may reduce carbon dioxide emissions in Ireland, Great Britain would experience an increase in emissions, resulting in total emissions remaining almost unchanged. The studies suggest that increased interconnection would not reduce excess wind generation. This is because under unit commitment techniques which incorporate wind power forecasts in the scheduling decisions, wind curtailment is minimal even with low levels of interconnection. As would be expected an increase in interconnection should improve system adequacy considerably with a significant reduction in the number of hours when the load and reserve constraints are not met.
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| 7 |
ID:
092786
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2009.
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| Summary/Abstract |
This study analyzes the effects of additional interconnection on welfare and competition in the Irish electricity market. I simulate the wholesale electricity markets of the island of Ireland and Great Britain for 2005. I find that in order for the two markets to be integrated in 2005, additional interconnection would have to be large. The amount of interconnection decreases for high costs of carbon, since this causes the markets to become more similar. This suggests that in the absence of strategic behavior of firms, most of the gains from trade derive not from differences in size between countries, but from technology differences and are strongly influenced by fuel and carbon costs. Social welfare increases with interconnection, although at a decreasing rate. As the amount of interconnection increases, there are also positive effects on competition in Ireland, the less competitive of the two markets. Finally, it is unlikely that private investors will pay for the optimal amount of interconnection since their returns are significantly smaller than the total social benefit of interconnection.
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