Umbrella clause
Arbitrary, unreasonable and/or discriminatory measures
Other
https://www.iareporter.com/articles/italy-is-facing-a-new-renewable-energy-arbitration-at-icsid/ (requires subscription)
https://globalarbitrationreview.com/italy-faces-new-renewables-claim (requires subscription)
https://www.iareporter.com/articles/analysis-investors-claims-in-encavis-v-italy-fail-on-the-merits-as-tribunal-finds-that-amendments-to-italian-renewable-energy-incentives-scheme-served-legitimate-public-purpose-and-fulfill/ (requires subscription)
https://globalarbitrationreview.com/article/german-fund-loses-solar-claim-against-italy (requires subscription)