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1 |
ID:
166402
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Summary/Abstract |
Many studies have estimated the effects of rising air temperatures due to climate change on electricity infrastructure systems, but none have quantified impacts in terms of potential outages down to the neighborhood scale. Using high-resolution climate projections, infrastructure maps, and forecasts of peak electricity demand for Los Angeles County (LAC), we estimated vulnerabilities in the electricity infrastructure to 2060. We considered rising air temperatures under IPCC RCP 4.5 and RCP 8.5 at 2 km2 grid cell resolution, two local government population growth scenarios, different efficiency implementations of new residential and commercial buildings, air conditioners (AC), and higher AC penetration. Results were that generators, substations, and transmission lines could lose up to 20% of safe operating capacities (MW). Moreover, based on recent historical load factors for substations in the Southern California Edison service territory, 848–6,724 MW (4–32%) of additional capacity, distributed energy resources, and/or peak load shifting could be needed by 2060 to avoid hardware overloading and outages. If peak load is not mitigated, and/or additional infrastructure capacity not added, then all scenarios result in > 100% substation overloading in Santa Clarita, which would trigger automatic outages, and > 20% substation overloading in at least Lancaster, Palmdale, and Pomona in which protection gear could trip outages within 30 min. Several climate change adaptation options are discussed for electricity infrastructure and building stock with consideration for trade-offs in system stability and other energy and environmental goals.
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2 |
ID:
182737
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Summary/Abstract |
Does extreme heat have causal effects on exports? If so, how do the effects evolve? This paper exploits monthly fluctuations in the number of extremely hot days within a city to identify their effects on firm-level exports in that city. We find robust evidence that hot temperatures have persistent adverse effects on firm-level exports. Specifically, export losses gradually arise following a heat shock, beginning from an undetectable impact and eventually accumulating to a large and significant impact. An additional >30 °C day in a month could generate cumulative losses up to 0.83% of a firm's annual exports twenty-four months later. The negative effects of extreme heat are mainly through its adverse impacts on the firm's investment, capital, and production output. Capital-intensive sectors and FDI-related enterprises are among the most affected by high temperatures. Our findings support the “no-recovery” hypothesis after weather extremes and have implications for future climate change policies.
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3 |
ID:
182738
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Summary/Abstract |
Does extreme heat have causal effects on exports? If so, how do the effects evolve? This paper exploits monthly fluctuations in the number of extremely hot days within a city to identify their effects on firm-level exports in that city. We find robust evidence that hot temperatures have persistent adverse effects on firm-level exports. Specifically, export losses gradually arise following a heat shock, beginning from an undetectable impact and eventually accumulating to a large and significant impact. An additional >30 °C day in a month could generate cumulative losses up to 0.83% of a firm's annual exports twenty-four months later. The negative effects of extreme heat are mainly through its adverse impacts on the firm's investment, capital, and production output. Capital-intensive sectors and FDI-related enterprises are among the most affected by high temperatures. Our findings support the “no-recovery” hypothesis after weather extremes and have implications for future climate change policies.
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