How to balance supply and demand have become a long-term question in the electricity market, and anomalies related to calendar issues are critical factors to affect the resource allocation. This paper introduces a test method to control all potential calendar anomalies, and assess the significance of all possible calendar effects in different time frequencies. We implement our test method to the largest electricity trading platform in the United States. Using the high-frequency intraday trading data, we assess the calendar effects in different time frequencies (Day-of-the-week, Hour-ofthe-day, Month-of-the-year, Day-of-the-month and season). Our results confirm that calendar effects exist in every dimension of time frequency, and specify those calendar effects with statistical significance. Moreover, this study discovers commonalities between electricity markets and financial markets, which makes it feasible to apply the management of financial markets to electricity markets. Besides, the detected calendar effects depict periodic patterns of market inequilibrium and facilitate the implementation of corresponding technical solutions in electricity markets.

Carbon Capture, Utility and Storage (CCUS) is essential for achieving carbon neutrality and has great development potential in China. CCUS, as a long‐term new investment, can address global warming and has significant social and economic impacts. This paper assessed the socio‐economic effects of CCUS investment based on carbon neutrality in China by combining the dynamic GTAP model and the Input‐output method. The result indicates that: CCUS investment may accumulate US$ 67.09 billion and US$ 776.61 billion from 2026 to 2030 and 2056 to 2060, respectively, based on International Energy Agency (IEA) investment scenario. Moreover, the corresponding value may increase to 8.26 billion and 743.21 billion US dollars from 2026 to 2030 and 2056 to 2060, respectively, based on Asian Development Bank (ADB) investment scenario; CCUS investment may stimulate gross value‐added of US$ 1.2 billion and US$ 10.4 billion based on ADB and IEA investment scenarios, respectively. CCUS investment may mainly promote the machinery industry, metal manufacturing industry, other service industries, power equipment manufacturing industry, and light processing manufacturing industry; Furthermore, ADB and IEA investment scenarios showed that CCUS industrial investment may indirectly create about 12,796 and 103,886 jobs, respectively, and US$ 85 million and US$ 692 million of labor employment income, respectively, in 2030. The corresponding values may increase to 0.82 million and 0.85 million jobs, respectively, and US$ 5,168 and US$ 5,396 million employment income, respectively, in 2060.

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This paper examines the impact of trust on informal financial development. We isolate the inherited component of trust for 19 countries using US census data and relate it to firms' access to trade credit. We discover that trust disproportionately elevates the use of trade credit by companies that face obstacles to obtaining funds from formal channels. Further analyses show that the effect is more pronounced in finance-dependent industries and that better access to trade credit promotes sales growth. Our results are robust to alternative samples, different estimations of inherited trust and various model specifications.