The Monthly Calculation of Transmission Services and Charges - AMSE basically involves the calculation of revenue to be paid to Transmission service providers (transmission utilities and ONS) and charges for use of the Transmission System - EUST and Sector to be charged for each user of the Basic Grid and Border Grid.

The process of AMSE considers all parameters needed for the calculations of revenue (Annual Revenue, Adjustment Installment of Previous Cycles, among others), charges (tariffs, demands and contracted generation), as well as all the variables involved (Variable Installment due the unavailability of facilities; Financial Additional due to Overtaking Demand; New Agents; ONS Modulated Budget; Revenue from New Works).

AMSE ended the year with 105 transmission utilities and 278 users, 272 permanent and six temporary. The total charges and revenues paid in the year amounted to R$ 13.603 billion.

The payment of utility receipts transmission has started in 2012, according to ANEEL Resolution no. 454/2011, which established the criteria and conditions for the commercial operation of reinforcements and expansions of transmission facilities to be integrated to the BIPS.