Pan Am. World Airways, Inc. v. Florida Pub. Service Comm'n, 427 So.2d 716, 717 (Fla. 1983). See also Manatee County v. Marks, 504 So.2d 763 (Fla. 1987); Florida Power Corp. v. Public Serv. Comm'n, 487 So.2d 1061 (Fla. 1986); Citizens v. Public Serv. Comm'n, 464 So.2d 1194 (Fla. 1985); Florida Tel. Corp. v. Mayo, 350 So.2d 775 (Fla. 1977). An agency's interpretation of its own rules is entitled to great deference.
Under black letter contract law, consideration "need not be money or anything having monetary value, but may consist of either a benefit to the promisor or a detriment to the promisee." Fla. Power Corp. v. Public Service Comm'n , 487 So. 2d 1061, 1063 (Fla. 1986). There is no legal basis to restrict the Graves Amendment in this way.
Although it is not the proper role of this Court to reweigh or reevaluate evidence presented to the PSC, Gulf Power Co. v. Public Service Commission, 480 So.2d 97 (Fla. 1985); Polk County v. Florida Public Service Commission, 460 So.2d 370 (Fla. 1984), we may examine the record to determine whether the order complained of meets the essential requirements of law. Florida Power Corp. v. Public Service Commission, 487 So.2d 1061 (Fla. 1986). The PSC's order, we believe, may not stand for two reasons.