Under this law, power grid operators are requested to "buy all the grid connected power produced with renewable energy within the coverage of their power grid, and provide grid-connection service for the generation of power with renewable energy". This should be achieved through grid connection agreements between grid operators and renewable power generation companies. When local grids are saturated, and cannot accommodate all the incoming electricity or easily transmit the electricity surplus through to adjacent grids, grid companies typically curtail electricity generated by wind farms.