Risk Reduction Potential of Weather Index-based Insurance in Agribusiness –
The Importance of the Aggregation Level of Yield Time Series

Niels Pelka, Oliver Mußhoff

Published: 01.06.2015  〉 Volume 64 (2015), Number 2, 76-88  〉 Resort: Articles 
Submitted: N. A.   〉 Feedback to authors after first review: N. A.   〉 Accepted: N. A.

ABSTRACT

Weather index-based insurance is not sufficiently used in agriculture as of yet. Basis risks are considered to be a major reason for this. By the use of weather in-dex-based insurance, basis risks remain with the farmer. However, weather index-based insurance can be interesting for agribusiness companies, specifically those which aggregate yields of several farms amongst themselves. This paper investigates the importance of the aggregation level of yield time series for the hedg-ing effectiveness of weather index-based insurance following the example of a sugar processing company. This investigation is based on empirical sugar beet yield data from 40 sugar beet producing farms in Northern Germany. Furthermore, we work with the aggregated sugar yield time series of roughly 5,000 farms, which account for sugar beets used in the sugar processing company in question. At the same time, this highly aggregated yield time series de-scribes the quantity risk of the sugar processing com-pany. Our results empirically show that in conse-quence of aggregating the sugar yield time series, basis risk is diminished and risk reduction potential is raised through the use of weather index-based insur-ance. The risk reduction potential of weather index-based insurance can, therefore, be underestimated if it is derived from studies pertaining to yield time series at the individual farm level. The focus of the present study may be relevant for agribusiness companies, as well as for potential providers of weather derivatives.
CONTACT AUTHOR
NIELS PELKA
Dept. für Agrarökonomie und Rurale Entwicklung,
Georg-August-Universität Göttingen,
Platz der Göttinger Sieben 5, 37073 Göttingen
E-Mail: npelka@gwdg.de
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