High quality indoor environments for sustainable office buildings

The quality of office indoor environments is considered to consist of those factors that impact occupants according to their health and well-being and (by consequence) their productivity. Indoor Environment Quality (IEQ) can be characterized by four indicators: • Indoor air quality indicators • Thermal comfort indicators • Lighting indicators • Noise indicators. Within each indicator, there are specific metrics that can be utilized in determining an acceptable quality of an indoor environment based on existing knowledge and best practice. Examples of these metrics are: indoor air levels of pollutants or odorants; operative temperature and its control; radiant asymmetry; task lighting; glare; ambient noise. The way in which these metrics impact occupants is not fully understood, especially when multiple metrics may interact in their impacts. While the potential cost of lost productivity from poor IEQ has been estimated to exceed building operation costs, the level of impact and the relative significance of the above four indicators are largely unknown. However, they are key factors in the sustainable operation or refurbishment of office buildings. This paper presents a methodology for assessing indoor environment quality (IEQ) in office buildings, and indicators with related metrics for high performance and occupant comfort. These are intended for integration into the specification of sustainable office buildings as key factors to ensure a high degree of occupant habitability, without this being impaired by other sustainability factors. The assessment methodology was applied in a case study on IEQ in Australia’s first ‘six star’ sustainable office building, Council House 2 (CH2), located in the centre of Melbourne. The CH2 building was designed and built with specific focus on sustainability and the provision of a high quality indoor environment for occupants. Actual IEQ performance was assessed in this study by field assessment after construction and occupancy. For comparison, the methodology was applied to a 30 year old conventional building adjacent to CH2 which housed the same or similar occupants and activities. The impact of IEQ on occupant productivity will be reported in a separate future pape

Oil prices and U.S. aggregate economic activity: a question of neutrality

Considerable research finds oil price shocks have had major effects on U.S. output and inflation. Several recent studies argue that the response of monetary policy-rather than the oil price shocks themselves-caused the fluctuations in economic activity. Stephen Brown and Mine Yucel show that an oil price increase will lead to a decline in real GDP and an increase in the price level that are of a similar magnitude if the federal funds rate is unconstrained-a finding consistent with the definition of monetary neutrality in which nominal GDP is constant. Brown and Yucel also find that holding the federal funds rate constant in the face of an oil price increase is an accommodative policy that boosts real GDP, the price level, and nominal GDP. In short, the monetary authority can use accommodative policy to cushion the negative effects of higher oil prices on real GDP, but at the expense of higher inflation.Power resources - Prices ; Gross domestic product ; Inflation (Finance)

Energy prices and state economic performance

Changes in energy prices have had sizable but differing effects on economic activity across the United States. The composition of each state's economy largely determines how its employment responds to changes in energy prices. In this article, Stephen Brown and Mine Yucel use simulations based on input-output analysis to assess the long-term consequences of changing oil prices on employment in each state in 1982, 1992, and 2000. Brown and Yucel find that because state economies are becoming more similar in their composition, the variation across states in the response to changing oil prices is narrowing. The authors' findings suggest that the grounds for regional divisions in the debate over national energy policy have lessened since the early 1980s and will continue to do so throughout the remainder of the 1990s.Power resources - Prices ; State finance

Deliverability and regional pricing in U.S. natural gas markets

During the 1980s and early '90s, interstate natural gas markets in the United States made a transition away from the regulation that characterized the previous three decades. With abundant supplies and plentiful pipeline capacity, a new order emerged in which freer markets and arbitrage closely linked natural gas price movements throughout the country. After the mid-1990s, however, U.S. natural gas markets tightened and some pipelines were pushed to capacity. We look for the pricing effects of limited arbitrage through causality testing between prices at nodes on the U.S. natural gas transportation system and interchange prices at regional nodes on North American electricity grids. Our tests do reveal limited arbitrage, which is indicative of bottlenecks in the U.S. natural gas pipeline system.Natural gas ; Arbitrage ; Pricing

The pricing of natural gas in U.S. markets

Stephen Brown and Mine Yücel examine how different natural gas users and the market institutions serving them affect the transmission of price changes throughout various markets for natural gas. Electrical utilities and industrial users buy much of their natural gas in a competitive spot market served by brokers and interstate pipeline companies. In contrast, most commercial and residential customers are dependent on local distribution companies, which earn a regulated rate of return and buy their gas under long-term contracts. ; Using time-series methods, Brown and Yücel find that even in the long run, changes in prices are not transmitted uniformly throughout the various markets for natural gas. Electrical and industrial customers have seen a greater benefit from falling natural gas prices than commercial and residential customers. Differences in market institutions and in the ability of the end users to switch fuels may account for the lack of uniformity.Power resources - Prices

The energy industry: past, present and future

Economic policy ; Power resources - Prices

What drives natural gas prices?

For many years, fuel switching between natural gas and residual fuel oil kept natural gas prices closely aligned with those for crude oil. More recently, however, the number of U.S. facilities able to switch between natural gas and residual fuel oil has declined, and over the past five years, U.S. natural gas prices have been on an upward trend with crude oil prices but with considerable independent movement. Natural gas market analysts generally emphasize weather and inventories as drivers of natural gas prices. Using an error-correction model, we show that when these and other additional factors are taken into account, movements in crude oil prices have a prominent role in shaping natural gas prices. Our findings imply a continuum of prices at which natural gas and petroleum products are substitutes.

Energy prices and aggregate economic activity: an interpretive survey

In this paper, we survey the theory and evidence linking fluctuations in energy prices to aggregate economic activity. We then briefly examine the implications of this research for both monetary policy and energy policy in response to oil price shocks. Research seems to provide relatively reliable guidance for monetary policy. Because the precise channels through which oil price shocks affect economic activity are only partially known, however, research offers less guidance about how energy policy should cope with oil price shocks.Energy policy ; Monetary policy ; Petroleum industry and trade

Gasoline and crude oil prices: why the asymmetry?

Many consumers complain that gasoline and crude oil prices have an asymmetric relationship in which gasoline prices raise more quickly when crude oil prices are rising than they fall when crude oil prices are falling. Many also regard the asymmetry they observe as evidence of market power in the petroleum industry. Most previous research provides econometric evidence of the asymmetry, confirming at least part of what consumers suspect. In this article Stephen Brown and Mine Yucel extend the inquiry by examining the market conditions underlying the asymmetric relationship between gasoline and crude oil prices. They find the observed asymmetry is unlikely to be the result of monopoly power. The remaining explanations for the asymmetry suggest that policies to prevent an asymmetric relationship between gasoline and crude oil prices are likely to reduce economic efficiency.

Oil prices and aggregate economic activity: a study of eight OECD countries

Power resources - Prices ; Organisation for Economic Co-operation and Development