Similar title to Krey, V. ORCID: https://orcid.org/0000-0003-0307-3515 & Riahi, K. ORCID: https://orcid.org/0000-0001-7193-3498 (2009). Risk Hedging Strategies under Energy System and Climate Policy Uncertainties. IIASA Interim Report. IIASA, Laxenburg, Austria: IR-09-028