A compressed air energy storage (CAES) system comprising: a compression train comprising: a first compressor configured to compress air; a second compressor configured to further compress air; and a compressor path configured to provide passage of compressed air from the first compressor to the second compressor; an intercooler coupled to the compressor path; a storage volume configured to store compressed air egressing from the compression train; a compressed air path coupled to the compression train and the storage volume, the compressed air path configured to provide passage of compressed air egressing from the compression train to the storage volume; and a heat recovery system coupled to at least one of the compressor path and the compressed air path, the heat recovery system configured to draw heat from at least one of the compressor path and the compressed air path to a first liquid, wherein the heat recovery system comprises: a first evaporator configured to evaporate the first liquid to a first gas; a first generator configured to produce electricity based on an expansion of the first gas; a second evaporator configured to evaporate a second liquid to a second gas via heat drawn from the compressed air path; and a second generator configured to produce electricity based on expansion of the second gas; wherein the intercooler is configured to provide heat from compressed air egressing from the first compressor to the first liquid; and characterized in that the heat recovery system is further configured to convey heat from the second gas to the first liquid to evaporate the first liquid via the first evaporator. a compression train comprising: a first compressor configured to compress air; a second compressor configured to further compress air; and a compressor path configured to provide passage of compressed air from the first compressor to the second compressor; an intercooler coupled to the compressor path; a first compressor configured to compress air; a second compressor configured to further compress air; and a compressor path configured to provide passage of compressed air from the first compressor to the second compressor; an intercooler coupled to the compressor path; a storage volume configured to store compressed air egressing from the compression train; a compressed air path coupled to the compression train and the storage volume, the compressed air path configured to provide passage of compressed air egressing from the compression train to the storage volume; and a heat recovery system coupled to at least one of the compressor path and the compressed air path, the heat recovery system configured to draw heat from at least one of the compressor path and the compressed air path to a first liquid, wherein the heat recovery system comprises: a first evaporator configured to evaporate the first liquid to a first gas; a first generator configured to produce electricity based on an expansion of the first gas; a second evaporator configured to evaporate a second liquid to a second gas via heat drawn from the compressed air path; and a second generator configured to produce electricity based on expansion of the second gas; wherein the intercooler is configured to provide heat from compressed air egressing from the first compressor to the first liquid; and characterized in that the heat recovery system is further configured to convey heat from the second gas to the first liquid to evaporate the first liquid via the first evaporator. a first evaporator configured to evaporate the first liquid to a first gas; a first generator configured to produce electricity based on an expansion of the first gas; a second evaporator configured to evaporate a second liquid to a second gas via heat drawn from the compressed air path; and a second generator configured to produce electricity based on expansion of the second gas; wherein the intercooler is configured to provide heat from compressed air egressing from the first compressor to the first liquid; and characterized in that the heat recovery system is further configured to convey heat from the second gas to the first liquid to evaporate the first liquid via the first evaporator.