Grasshopper Solar Corporation v. Independent Electricity System Operator: Past Practices May Be Too Far Removed to Satisfy the Test for Estoppel by Convention Past Practices May Be Too Far Removed to Satisfy theGrasshopper Solar Corporation v. Independent Electricity System Operator: Past Practices May Be Too Far Removed to Satisfy the Test for Estoppel by ConventionFCL2020-09-17T21:30:31+00:00