stochastic modeling of financial electricity contracts abstract we discuss the modeling of electricity contracts traded in many deregulated power markets these forward futures type contracts deliver either physically or financially electricity over a specified time period and is frequently referred to as swaps since they in effect represent an exchange of fixed for floating electricity price we propose to use the heath jarrow morton approach to model swap prices since the notion of a spot price is not easily defined in these markets for general stochastic dynamical models we connect the spot price the instantaneous delivery forward price and the swap price and analyze two different ways to apply the heath jarrow morton approach to swap pricing either one specifies a dynamics for the non existing instantaneous delivery forwards and derives the implied swap dynamics or one models directly on the swaps the former is shown to lead to quite complicated stochastic models for the swap price even when the forward dynamics is simple the latter has some theoretical problems due to a no arbitrage condition that has to be satisfied for swaps with overlapping delivery periods to overcome this problem a practical modeling approach is analyzed the market is supposed only to consist of non overlapping swaps and these are modelled directly a thorough empirical study is performed using data collected from nord pool our investigations demonstrate that it is possible to state reasonable models for the swap price dynamics which is analytically tractable for risk management and option pricing purposes however this is an area of further research

wealth accumulation over the life cycle and precautionary savings this article constructs and simulates a life cycle model of wealth accumulation and estimates the parameters of the utility function the rate of time preference and the coefficient of risk aversion by matching the simulated median wealth profiles with those observed in the panel study of income dynamics and in the survey of consumer finances the estimates imply a low degree of patience and a high degree of risk aversion the results are used to study the importance of precautionary savings in explaining wealth accumulation they imply that wealth accumulation is driven mostly by precautionary motives at the beginning of the life cycle whereas savings for retirement purposes become significant only closer to retirement

the influence of temperature on spike probability in day ahead power prices it is well known that day ahead prices in power markets exhibit spikes and time varying volatility spikes and extremely high volatility are the results of short term frictions in demand and or supply conditions it is known that information on load or the reserve margin help to forecast spikes however these variables are not timely available for every market participant and this paper suggests to use temperature as a proxy interpreting the results from several switching regimes models the paper shows that the probability of spike occurrence increases when temperature deviates substantially from mean temperature levels

labor market opportunities and women s decision making power within households abstract despite the perceived importance of labor market opportunities in shaping married women s outside option and their bargaining power within households as a result this link has received very little empirical attention using longitudinal data on who makes the decision on a wide range of issues within mexican households and data from the administrative records of the mexican social security institute this paper identifies the effects of relative changes in labor market opportunities for men and women on both working and non working women s decision making power i find that increases in labor market opportunities improve women s decision making power as well as children s health using differential labor demand shocks across mexican industries caused by china s admission to the wto gives similar results

leaders riverboat gamblers or purposeful unintended consequences in the management of complex dangerous technologies utilities investment in nuclear generating technology and prior earnings growth were used to predict variations in three measures of plant operating safety the pattern of results is consistent wi

electricity market price volatility the case of ontario abstract price volatility analysis has been reported in the literature for most competitive electricity markets around the world however no studies have been published yet that quantify price volatility in the ontario electricity market which is the focus of the present paper in this paper a comparative volatility analysis is conducted for the ontario market and its neighboring electricity markets volatility indices are developed based on historical volatility and price velocity concepts previously applied to other electricity market prices and employed in the present work the analysis is carried out in two scenarios in the first scenario the volatility indices are determined for the entire price time series in the second scenario the price time series are broken up into 24 time series for each of the 24 h and volatility indices are calculated for each specific hour separately the volatility indices are also applied to the locational marginal prices of several pricing points in the new england new york and pjm electricity markets the outcomes reveal that price volatility is significantly higher in ontario than the three studied neighboring electricity markets furthermore comparison of the results of this study with similar findings previously published for 15 other electricity markets demonstrates that the ontario electricity market is one of the most volatile electricity markets world wide this high volatility is argued to be associated with the fact that ontario is a single settlement real time market

gender training and female empowerment experimental evidence from vietnam we combine an rct and a lab in the field experiment to explore how participating in an entrepreneurship and gender training affects the intra household bargaining position of women while male preferences dominate household decisions the training attenuates the bargaining gap considerably inviting husbands to participate in the training does not further improve outcomes

electricity prices large scale renewable integration and policy implications abstract this paper investigates the effects of intermittent solar and wind power generation on electricity price formation in germany we use daily data from 2010 to 2015 a period with profound modifications in the german electricity market the most notable being the rapid integration of photovoltaic and wind power sources as well as the phasing out of nuclear energy in the context of a garch in mean model we show that both solar and wind power granger cause electricity prices that solar power generation reduces the volatility of electricity prices by scaling down the use of peak load power plants and that wind power generation increases the volatility of electricity prices by challenging electricity market flexibility

roughing it up including jump components in the measurement modeling and forecasting of return volatility a rapidly growing literature has documented important improvements in financial return volatility measurement and forecasting via use of realized variation measures constructed from high frequency returns coupled with simple modeling procedures building on recent theoretical results in barndorff nielsen and shephard 2004a 2005 for related bi power variation measures the present paper provides a practical and robust framework for non parametrically measuring the jump component in asset return volatility in an application to the dm exchange rate the s p500 market index and the 30 year u s treasury bond yield we find that jumps are both highly prevalent and distinctly less persistent than the continuous sample path variation process moreover many jumps appear directly associated with specific macroeconomic news announcements separating jump from non jump movements in a simple but sophisticated volatility forecasting model we find that almost all of the predictability in daily weekly and monthly return volatilities comes from the non jump component our results thus set the stage for a number of interesting future econometric developments and important financial applications by separately modeling forecasting and pricing the continuous and jump components of the total return variation process

predicting price spikes in electricity markets using a regime switching model with time varying parameters this paper shows that a stochastic regime switching model can represent the volatile behavior of wholesale electricity prices associated with price spikes effectively the structure of the model is very flexible because the mean prices in the two regimes and the two transition probabilities are functions of the load and or the implicit reserve margin using price data from the single settlement market in pjm may 1999 to may 2000 the results show that the estimated switching probability from the low to the high regime predicts price spikes well if the reserve margin is measured accurately

hourly electricity prices in day ahead markets this paper focuses on the characteristics of hourly electricity prices in day ahead markets in these markets quotes for day ahead delivery of electricity are submitted simultaneously for all hours in the next day the same information set is used for quoting all hours of the day the dynamics of hourly electricity prices does not behave as a time series process instead these prices should be treated as a panel in which the prices of 24 cross sectional hours vary from day to day this paper introduces a panel model for hourly electricity prices in day ahead markets and examines their characteristics the results show that hourly electricity prices exhibit hourly specific mean reversion and that they oscillate around an hourly specific mean price level furthermore a block structured cross sectional correlation pattern between the hours is apparent

the price of power the valuation of power and weather derivatives abstract pricing contingent claims on power presents numerous challenges due to 1 the unique behavior of power prices and 2 time dependent variations in prices we propose and implement a model in which the spot price of power is a function of two state variables demand load and fuel price in this model any power derivative price must satisfy a pde with boundary conditions that reflect capacity limits and the non linear relation between load and the spot price of power moreover since power is non storable and demand is not a traded asset the power derivative price embeds a market price of risk using inverse problem techniques and power forward prices from the pjm market we solve for this market price of risk function during 1999 2001 the upward bias in the forward price was as large as 50 mwh for some days in july by 2005 the largest estimated upward bias had fallen to 19 mwh these large biases are plausibly due to the extreme right skewness of power prices this induces left skewness in the payoff to short forward positions and a large risk premium is required to induce traders to sell power forwards this risk premium suggests that the power market is not fully integrated with the broader financial markets

strotz meets allais diminishing impatience and the certainty effect abstract decision makers tend to exhibit a higher degree of impatience when considering a delay to an immediate reward than when contemplating an identical delay to an equal future reward this work argues that diminishing impatience originates from the distinction between the certain present and the risky future a simple functional representation of preferences exhibiting time inconsistency when the future is uncertain is derived experimental evidence which is inconsistent with other formulations that account for diminishing impatience supports the proposed approach the new theory uncovers a tight relation between diminishing impatience and well known behavioral regularities in choice under risk and uncertainty jel d12 d81

forecasting spot price volatility using the short term forward curve abstract we use high frequency real time spot prices and day ahead forward prices from the pennsylvania new jersey maryland wholesale electricity market to calculate describe and forecast spot price volatility we introduce the concept of forward realized volatility calculated from day ahead forward prices forward realized volatility improves forecasts of spot price volatility in the sense of higher r 2 s and significantly lower forecast errors when compared with forecasts based solely upon historical volatility the largest forecast improvements obtained when the change in forward realized volatility is large in magnitude splitting total volatility into its continuous and jump components is crucial for forecasting volatility at weekly and monthly horizons

stochastic price modeling of high volatility mean reverting spike prone commodities the australian wholesale spot electricity market it is commonly known that wholesale spot electricity markets exhibit high price volatility strong mean reversion and frequent extreme price spikes this paper employs a basic stochastic model a mean reverting model and a regime switching model to capture these features in the australian national electricity market nem comprising the interconnected markets of new south wales queensland south australia and victoria daily spot prices from 1 january 1999 to 31 december 2004 are employed the results show that the regime switching model outperforms the basic stochastic and mean reverting models electricity prices are also found to exhibit stronger mean reversion after a price spike than in the normal period and price volatility is more than fourteen times higher in spike periods than in normal periods the probability of a spike on any given day ranges between 5 16 in nsw and 9 44 in victoria

do gender and business trainings affect business outcomes experimental evidence from vietnam we use a randomized control trial to evaluate the impact of a business training for female clients of a microfinance institution in northern vietnam and we consider the impact on i business knowledge ii practices and ii outcomes as well as iv firm entry and exit decisions in addition we vary the nature of the intervention by inviting husbands to participate in the trainings for a subsample of our respondents to gauge both short term and medium term effects we combine data from two separate postintervention surveys we find evidence of economically substantive impacts on knowledge practices and outcomes and on the extensive margin entry and exit we also document that it takes time for the downstream outcomes of the trainings to materialize although we find evidence of medium term effects no such evidence exists for the short term inviting husbands to participate in the trainings does not affect any of our knowledge or practice measures but we document weak evidence for different

the effect of national context on perceptions of risk a comparison of planned versus free market managers a model is developed to explain the effect of national context on risk related decisions an essential feature of risk related decisions is substantial uncertainty or inadequate information as well as significant consequences regarding future outcomes we argue that differences in information flows and consequences across national institutional environments affect the perceived uncertainty of decision situations for this reason the institutional environment in which managers reside should play a fundamental and systematic role in influencing their perceptions of risk we test our model on managers from two environments that contrast in terms of information and consequences related to risk a free market economy the u s and a centrally planned economy the czech republic in 1992 our results indicate that the institutional environment does indeed play a strong and systematic role in explaining managers risk related decisions thus national environment appears to be an important contextual condition to which the propensity to take risks is sensitive

time discounting for primary and monetary rewards this paper reports a positive and statistically significant relation between short term discount rates elicited with a monetary and a primary reward chocolate the relation is most evident among people who like chocolate and are hungry this finding suggests that high short term discount rates are related to an underling individual trait consistent with models of presentbiased preferences

reprint unpacking the indirect effects and consequences of environmental abstract environmental regulation and its corresponding measures and control is an important issue but have not been fully investigated literature on the unintended consequences of regulation control and measures appears to be sparse through a series of exploratory case studies in china this paper examines the various unintended impacts of ecological civilisation ec regulation on firms operations and their related consequences to performance findings showed that there were interrelated themes that underpin the indirect and unintended effects of regulatory control and performance management this exploratory study can contribute to both theory building and provide important ec policy implications by a enriching the conceptual understanding of the unintended consequences of environmental regulation on firms behaviours and outcomes b providing policy maker important insights and practical advices for regulating environmental performance

moving closer to the action examining compensation design effects on firm risk we examine the influence of ceo equity based compensation on strategic risk taking by the firm building off the behavioral agency model agency theory and prospect theory we develop arguments about when equity based compensation elements will increase or decrease executive risk propensity and in turn strategic risk taking incorporating a behavioral perspective into our models of incentive alignment provides us with new and potentially more accurate predictions about how individual elements of ceo pay will influence risk selection as well as how equity compensation interacts with cash compensation and with other factors to influence risk preferences in general this study provides evidence that ceo equity based compensation significantly influences strategic risk but that this influence is more nuanced and complex than conventional treatments of executive compensation assume in particular we find that different forms of equity based pay exhibit dissimilar influences on strategic risk and that their influence changes as their value and vesting status change second we find that cash based forms of pay moderate the incentive properties of equity based pay indicating that cash based pay may affect how executives perceive risks associated with equity pay finally we find that stock price volatility and board actions each also moderate the incentive effects of equity based pay in sum our results argue for increased recognition of a behavioral perspective on executive compensation and greater precision in how we measure and model the incentive alignment properties of ceo compensation

efficient intra household allocations a general characterization and empirical tests the neoclassical theory of demand applies to individuals yet in empirical work it is usually taken as valid for households with many members this paper explores what the theory of individuals implies for households that have more than one member we make minimal assumptions about how the individual members of the household resolve conflicts all we assume is that however decisions are made outcomes are efficient we refer to this as the collective setting we show that in the collective setting household demands must satisfy a symmetry and rank condition on the slutsky matrix we also present some further results on the effects on demands of variables that do not modify preferences but that do affect how decisions are made we apply our theory to a series of surveys of household expenditures from canada the tests of the usual symmetry conditions are rejected for two person households but not for one person households we also show that income pooling is rejected for two person households we then test for our collective setting conditions on the couples data none of the collective setting restrictions are rejected we conclude that the collective setting is a plausible and tractable next step to take in the analysis of household behavior

modeling realized volatility on the spanish intra day electricity market abstract this paper models the realized volatility of the hourly prices from the six sessions of the spanish intra day electricity market for the period 2002 2014 based on the sequential organization of the market a model in which realized volatility depends on its own past and that of the other sessions is specified and then modified in two ways on the one hand total variation is decomposed into jump and non jump components and on the other hand egarch innovations are considered estimation results show significant volatility transmissions between the sessions out of sample forecast criteria select egarch innovations for sessions 1 and 2 while simpler models with no egarch innovations and no jump distinction are preferred for sessions 5 and 6 we argue how results are driven by the market structure the market design and the regulation of renewable generation

realized volatility and price spikes in electricity markets the importance of observation frequency abstract this paper uses high frequency spot price data from eight wholesale electricity markets in australia canada and the united states to estimate realized volatility and the frequency of price spikes i find similar levels of realized volatility in australia and north america with estimates ranging from 1500 to 2700 much greater than estimates reported previously in the literature in hourly data the frequency of price spikes ranges from approximately 35 to 40 in seven of eight markets i present evidence that increasing the lag length in the calculation of bipower variation improves jump detection in electricity prices

risk propensity in the foreign direct investment location decision of emerging multinationals a distinguishing feature of emerging economy multinationals is their apparent tolerance for host country institutional risk employing behavioral decision theory and quasi experimental data we find that managers domestic experience satisfaction increases their relative risk propensity regarding controllable risk legally protectable loss but decreases their tendency to accept noncontrollable risk e g political instability in contrast firms potential slack reduces relative risk propensity regarding controllable risk yet amplifies the tendency to take noncontrollable risk we suggest that these counterbalancing effects might help explain prior ambiguous findings on the relationship between experience slack and fdi decisions the study provides a new understanding of why firms exhibit heterogeneous responses to host country risks and the varying effects of institutions

forecasting realized volatility in electricity markets using logistic smooth transition heterogeneous autoregressive models we apply the non parametric realized volatility technique and the associated jump detection test to measure volatility and jumps in electricity prices then we propose a group of logistic smooth transition heterogeneous autoregressive lsthar models of realized volatility the models can simultaneously approximate long memory behavior and describe sign and size asymmetries they differ in the underlying heterogeneous autoregressive structure and the transition variable specification the out of sample forecast accuracy of the lsthar models is evaluated through the diebold mariano test and the superior predictive ability test in terms of the mean square error and the mean absolute error using high frequency prices from the australian new south wales nsw electricity market as empirical data we draw the following conclusions 1 introducing the logistic smooth transition structure with appropriate transition variable specification to the heterogeneous autoregressive models improves volatility forecasts 2 overall the lsthar model that uses the sum of beta function weighted past returns as the transition variable and includes past daily jumps as a predictor is the superior model for predicting volatility in the nsw market this model significantly outperforms the others

hyperbolic discounting and the standard model eliciting discount functions abstract experiments on static intertemporal choice find evidence of particularly extreme impatience toward immediate rewards while this is often taken as support for hyperbolic discounting it could also arise because the most likely participants in experiments may be those with the most immediate need for money we conduct a calibration exercise and find that the extreme impatience observed in experiments can be accommodated by a standard exponential discounting model with no discounting and expectation of a small increase in the base consumption level the calibration uses existing estimates of curvature of utility

intra household resource allocation an inferential approach if household income is pooled and then allocated to maximize welfare then income under the control of mothers and fathers should have the same impact on demand with survey data on family health and nutrition in brazil the equality of parental income effects is rejected unearned income in the hands of a mother has a bigger effect on her family s health than income under the control of a father for child survival probabilities the effect is almost twenty times bigger the common preference or neoclassical model of the household is rejected if unearned income is measured with error and income is pooled then the ratio of maternal to paternal income effects should be the same equality of the ratios cannot be rejected there is also evidence for gender preference mothers prefer to devote resources to improving the nutritional status of their daughters fathers to sons

estimating individual discount rates in denmark a field experiment we estimate individual discount rates with respect to time streams of money using controlled laboratory experiments these discount rates are elicited by means of field experiments involving real monetary rewards the experiments were carried out across denmark using a representative sample of 268 people between 19 and 75 years of age individual discount rates are estimated for various households differentiated by socio demographic characteristics such as income and age our conclusions are that discount rates are constant over the 12 month to 3 year horizons used in these experiments and that discount rates vary substantially with respect to several socio demographic variables hence we conclude that it would be reasonable to assume constant discount rates for specific household types but not the same rates across all households

estimating time preferences from convex budgets experimentally elicited discount rates are frequently higher than what seems reasonable for economic decision making such high rates are often attributed to present biased discounting a well known bias of standard measurements is the assumption of linear consumption utility attempting to correct this bias using measures of risk aversion to identify concavity researchers find reasonable discounting but at the cost of exceptionally high utility function curvature we present a new methodology for identifying time preferences both discounting and curvature from simple allocation decisions we find reasonable levels of both discounting and curvature and surprisingly dynamically consistent time preferences jel c91 d12 d81 understanding and estimating time preferences is obviously of great importance to economists marketers and policy makers consumers decide how much to invest in savings education real estate and life insurance how much to diet exercise and smoke whether to marry when to have children and what to leave in their wills while there has been substantial research estimating time preferences using aggregate consumption data 1 the bulk of the effort has occurred in laboratory environments 2 among the many laboratory techniques employed recent studies have favored multiple price lists mpl with monetary payments 3 with mpls individuals are asked multiple times to choose between smaller payment amounts closer to the present and larger amounts further into the future the interest rate increases monotonically in a price list such that the point where an individual switches from preferring sooner payments to later payments carries interval

consume now or later time inconsistency collective choice and revealed preference this paper develops a revealed preference methodology for exploring whether time inconsistencies in household choice are the product of nonstationarities at the individual level or the result of individual heterogeneity and renegotiation within the collective unit an empirical application to household level microdata highlights that an explicit recognition of the collective nature of choice allows the vast majority of household behaviour to be rationalised by theory that assumes preference stationarity at the individual level for our particular short panel data set simply permitting limited intrahousehold heterogeneity in time preferences allows the choices of 98 4 of the sample to be rationalised by a model that assumes exponential discounting at the individual level we also find that couples characterized by lower divergence in spousal discount rates are older more likely to have children and wealthier which we take as indications of experiencing higher match quality

risk preferences are not time preferences risk and time are intertwined the present is known while the future is inherently risky this is problematic when studying time prefer ences since uncontrolled risk can generate apparently present biased behavior we systematically manipulate risk in an intertemporal choice experiment discounted expected utility performs well with risk but when certainty is added common ratio predictions fail sharply the data cannot be explained by prospect theory hyperbolic discounting or preferences for resolution of uncertainty but seem consistent with a direct preference for certainty the data suggest strongly a difference between risk and time preferences jel c91 d81 d91 understanding individual decision making under risk and over time are two foundations of economic analysis 1 in both areas there has been research to suggest that standard models of expected utility eu and exponential discounting are flawed or incomplete regarding time experimental research has uncovered evidence of a present bias or hyperbolic discounting frederick loewenstein and o donoghue 2002 regarding risk there are number of well documented departures from eu such as the allais 1953 common consequence and common ratio paradoxes an organizing principle behind expected utility violations is that they seem to arise as so called boundary effects where certainty and uncertainty are combined camerer 1992 harless and camerer 1994 and starmer 2000 indicate that violations of expected utility are notably less prevalent when all choices are uncertain this observation is especially interesting when considering decisions about risk taking over time in particular certainty and uncertainty are combined in intertemporal decisions the present is known and certain while the future is inherently risky this observation is problematic if one intends to study time preference in isolation from