Long-term contracts and asset specificity revisited: An empirical analysis of producer-importer relations in the natural gas industry

This paper discusses long-term contracts as a particular organizational form situated somewhere between full vertical integration and short-term, market-based trading in the natural gas industry. We focus on the determinants of the duration of contracts under changing technical, economic, and institutional conditions. Using 311 long-term contracts we find that duration decreases as international market structures grow more competitive, and that contracts linked to an asset-specific investment extend, on average, three years longer.