A nonaqueous electrolytic solution for an energy storage device having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution comprising 0.001 to 10 % by mass of a carboxylic acid ester compound represented by the following general formula: wherein each of R 1 and R 2 independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkynyl group having 3 to 6 carbon atoms, an aralkyl group having 7 to 13 carbon atoms, an aryl group having 6 to 12 carbon atoms, or a -C(=O)-OR 4 group, and when R 1 and R 2 are each an alkyl group, then R 1 and R 2 may be bonded to each other to form a ring structure; R 3 represents a hydrogen atom, a halogen atom, or an alkyl group having 1 to 6 carbon atoms; X represents a -C(=O)- group, an -S(=O)- group, an -S(=O) 2 - group, an -S(=O) 2 -R 5 -S(=O) 2 - group or a CR 6 R 7 group, n represents an integer of 1 to 3 when X is a -C(=O)-group, n is 1 when X is an -S(=O)- group, an -S(=O) 2 - group, or a CR 6 R 7 group, n is 1 or 2 when X is an -S(=O) 2 -R 5 -S(=O) 2 - group; when n is 1, then L and R 4 may be the same as or different from each other and represent an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkynyl group having 3 to 6 carbon atoms, an alkoxyalkyl group having 2 to 6 carbon atoms, a cyanoalkyl group having 2 to 6 carbon atoms, an aralkyl group having 7 to 13 carbon atoms, or an aryl group having 6 to 12 carbon atoms, when n is 2, then L represents an ethylene group, a propane-1,3-diyl group, a butane-1,4-diyl group, a pentane-1,5-diyl group, a hexane-1,6-diyl group, a propane-1,2-diyl group, a butane-2,3-diyl group, a 2,2-dimethylpropane-1,3-diyl group, a 2-butene-1,4-diyl group, a 3-hexene-2,5-diyl group, a 2-butyne-1,4-diyl group, or a 3-hexyne-2,5-diyl group, and when n is 3, then L represents following structures, wherein * represents a bonding site: and R 5 represents an alkylene group having 1 to 4 carbon atoms, in which at least one hydrogen atom may be substituted with a halogen atom or an alkyl group having 1 to 4 carbon atoms, and each of R 6 and R 7 independently represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, in which at least one hydrogen atom may be substituted with a halogen atom, wherein at least one hydrogen atom of the alkyl group having 1 to 6 carbon atoms, the cycloalkyl group having 3 to 6 carbon atoms, the alkenyl group having 2 to 6 carbon atoms, the alkynyl group having 3 to 6 carbon atoms, the alkoxyalkyl group having 2 to 6 carbon atoms, the cyanoalkyl group having 2 to 6 carbon atoms, the aralkyl group having 7 to 13 carbon atoms, or the aryl group having 6 to 12 carbon atoms as R 1, R 2, R 4, or L, may be substituted with a halogen atom. wherein each of R 1 and R 2 independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkynyl group having 3 to 6 carbon atoms, an aralkyl group having 7 to 13 carbon atoms, an aryl group having 6 to 12 carbon atoms, or a -C(=O)-OR 4 group, and when R 1 and R 2 are each an alkyl group, then R 1 and R 2 may be bonded to each other to form a ring structure; R 3 represents a hydrogen atom, a halogen atom, or an alkyl group having 1 to 6 carbon atoms; X represents a -C(=O)- group, an -S(=O)- group, an -S(=O) 2 - group, an -S(=O) 2 -R 5 -S(=O) 2 - group or a CR 6 R 7 group, n represents an integer of 1 to 3 when X is a -C(=O)-group, n is 1 when X is an -S(=O)- group, an -S(=O) 2 - group, or a CR 6 R 7 group, n is 1 or 2 when X is an -S(=O) 2 -R 5 -S(=O) 2 - group; when n is 1, then L and R 4 may be the same as or different from each other and represent an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkynyl group having 3 to 6 carbon atoms, an alkoxyalkyl group having 2 to 6 carbon atoms, a cyanoalkyl group having 2 to 6 carbon atoms, an aralkyl group having 7 to 13 carbon atoms, or an aryl group having 6 to 12 carbon atoms, when n is 2, then L represents an ethylene group, a propane-1,3-diyl group, a butane-1,4-diyl group, a pentane-1,5-diyl group, a hexane-1,6-diyl group, a propane-1,2-diyl group, a butane-2,3-diyl group, a 2,2-dimethylpropane-1,3-diyl group, a 2-butene-1,4-diyl group, a 3-hexene-2,5-diyl group, a 2-butyne-1,4-diyl group, or a 3-hexyne-2,5-diyl group, and when n is 3, then L represents following structures, wherein * represents a bonding site: and R 5 represents an alkylene group having 1 to 4 carbon atoms, in which at least one hydrogen atom may be substituted with a halogen atom or an alkyl group having 1 to 4 carbon atoms, and each of R 6 and R 7 independently represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, in which at least one hydrogen atom may be substituted with a halogen atom, wherein at least one hydrogen atom of the alkyl group having 1 to 6 carbon atoms, the cycloalkyl group having 3 to 6 carbon atoms, the alkenyl group having 2 to 6 carbon atoms, the alkynyl group having 3 to 6 carbon atoms, the alkoxyalkyl group having 2 to 6 carbon atoms, the cyanoalkyl group having 2 to 6 carbon atoms, the aralkyl group having 7 to 13 carbon atoms, or the aryl group having 6 to 12 carbon atoms as R 1, R 2, R 4, or L, may be substituted with a halogen atom.