An integrated renewable energy source and energy storage system, RES-ESS, facility configured to supply electric power to an electric grid at a grid interconnection point and having a point of grid interconnect, POGI, limit representing a maximum electric power value to be supplied from the RES-ESS facility to the electric grid, the RES-ESS facility comprising: a renewable energy source, RES, configured to produce electric power, wherein the electric power produced by the RES comprises RES direct current, DC, electric power; at least one first power inverter coupled between the RES and the grid interconnection point, wherein the at least one first power inverter is configured to convert RES DC electric power to RES alternating current, AC, electric power; an energy storage system, ESS, configured to be charged with electric power produced by the RES; and at least one second power inverter coupled i) between the ESS and the grid interconnection point, and ii) between the at least one first power inverter and the grid interconnection point, wherein the at least one second power inverter is configured to a) convert RES AC electric power to ESS DC electric power when charging the ESS with RES AC electric power, and b) convert ESS DC electric power to ESS AC electric power when discharging the ESS AC electric power to the electric grid; wherein the RES-ESS facility is configured to divert RES AC electric power to the at least one second power inverter in an amount sufficient to avoid supplying RES AC electric power to the electric grid in excess of the POGI limit; and characterized in that an aggregate output capacity of the at least one first power inverter is sized to exceed the POGI limit, and wherein the RES-ESS facility is configured to generate a time-varying charge/discharge control signal for the ESS using a time-dependent forecast of energy production of the RES and a state of charge, SOC, schedule for the ESS. a renewable energy source, RES, configured to produce electric power, wherein the electric power produced by the RES comprises RES direct current, DC, electric power; at least one first power inverter coupled between the RES and the grid interconnection point, wherein the at least one first power inverter is configured to convert RES DC electric power to RES alternating current, AC, electric power; an energy storage system, ESS, configured to be charged with electric power produced by the RES; and at least one second power inverter coupled i) between the ESS and the grid interconnection point, and ii) between the at least one first power inverter and the grid interconnection point, wherein the at least one second power inverter is configured to a) convert RES AC electric power to ESS DC electric power when charging the ESS with RES AC electric power, and b) convert ESS DC electric power to ESS AC electric power when discharging the ESS AC electric power to the electric grid; wherein the RES-ESS facility is configured to divert RES AC electric power to the at least one second power inverter in an amount sufficient to avoid supplying RES AC electric power to the electric grid in excess of the POGI limit; and characterized in that an aggregate output capacity of the at least one first power inverter is sized to exceed the POGI limit, and wherein the RES-ESS facility is configured to generate a time-varying charge/discharge control signal for the ESS using a time-dependent forecast of energy production of the RES and a state of charge, SOC, schedule for the ESS.