Case T-51/09: Judgment of the General Court of 7 July 2010 — Commission v Antiche Terre (Arbitration clause — Programme concerning the promotion of energy technologies for Europe (Thermie) — Contract concerning the project for the building in Umbertide (Italy) of an electricity generating plant using an innovative agro-forestry biomass combustion technology — Substantial amendment to the conditions for performance of the contract — Termination — Reimbursement of sums paid — Interest)