Figure 1 Commercial arrangements for GESS and its interaction with GSF ................................................... 10 Figure 2 Structure of the novel long-term services agreement with EnergyAustralia...................................... 11 Figure 3 Round-trip efficiency and usage over two-year operational period ................................................... 13 Figure 4 Availability and daily cycle count over two-year operational period ................................................... 14 Figure 5 Net-revenue breakdown over two-year operational period ................................................................ 15 Figure 6 Revenue breakdown over two-year operational period...................................................................... 15 Figure 7 Average VIC trading interval prices by half-hour period and month over two-year operational period ............................................................................................................................................................................. 16 Figure 8 Average VIC trading interval prices by month over two-year operational period .............................. 16 Figure 9 Average interval FCAS prices by month and service over two-year operational period .................. 17 Figure 10 Average GESS operational profile by half-hour period and month over two-year operational period ............................................................................................................................................................................. 17 Figure 11 Impact of forecast error on GESS dispatch on 1 March 2019 ......................................................... 21