Method, implemented by computer means (DIS), for controlling the electric power produced by a facility of photovoltaic panels (PV1, PV2, ..., PVN) in order to establish a power reserve, the facility comprising a set of N inverters (OND1, OND2, ..., ONDN) for managing the power produced (Pp1, Pp2, ..., PpN) by said photovoltaic panels, the method, carried out iteratively on successive inverters among the set of N inverters, comprising: - issuing respective setpoints (CONS1, CONS2, ..., CONSN) to a number k of inverters among the set of N inverters, so that each produces a maximum power (a), the number k being less than the number N and the k inverters being determined for a given iteration of the method, - obtaining, from the k inverters, measurements of the maximum power (MES1, MES2, ..., MESN) respectively produced by the k inverters and storing in memory said measurements for the k inverters (c), said memory also storing N-k measurements obtained from N-k additional inverters during at least one prior iteration of the method, - estimating, by reading the contents of the memory (MEM), a total maximum power able to be produced by the set of N inverters of the facility (d), - obtaining information relating to an amount of reserve power to be established, and determining an overall power to be produced such that the difference between said overall power and said total maximum power corresponds to said amount of reserve power to be established (e), - maintaining the setpoints of the k inverters so as to produce a maximum power, and issuing setpoints respectively to N-k additional inverters in order to produce a target power that is less than the maximum power, so that the sum of the N-k target powers and of the k maximum powers corresponds to said overall power to be produced (f), - selecting from the N inverters one or more next inverters to replace the k inverters in a next iteration of the method. - issuing respective setpoints (CONS1, CONS2, ..., CONSN) to a number k of inverters among the set of N inverters, so that each produces a maximum power (a), the number k being less than the number N and the k inverters being determined for a given iteration of the method, - obtaining, from the k inverters, measurements of the maximum power (MES1, MES2, ..., MESN) respectively produced by the k inverters and storing in memory said measurements for the k inverters (c), said memory also storing N-k measurements obtained from N-k additional inverters during at least one prior iteration of the method, - estimating, by reading the contents of the memory (MEM), a total maximum power able to be produced by the set of N inverters of the facility (d), - obtaining information relating to an amount of reserve power to be established, and determining an overall power to be produced such that the difference between said overall power and said total maximum power corresponds to said amount of reserve power to be established (e), - maintaining the setpoints of the k inverters so as to produce a maximum power, and issuing setpoints respectively to N-k additional inverters in order to produce a target power that is less than the maximum power, so that the sum of the N-k target powers and of the k maximum powers corresponds to said overall power to be produced (f), - selecting from the N inverters one or more next inverters to replace the k inverters in a next iteration of the method. <EOS>