Dear Samarjit,

Technology for CA cold storage abound nowadays. Also, the cost of building one is not as much as 2 or 3 years ago.

Banana precoolers & ripening rooms have been around for 2 decades and in the past few years i saw some applications in pineapple and mango. I believe, in the apple storage it has been for very long time.
Applying it to other commodity (fruits, vegetable, flowers) which are living organism is a matter of finding the correct conditions necessary for them to undergo all the physiological and pathological processes associated with each produce.

Regarding the energy bill, sometimes its not the design that matters most. A lot of factors are from owners attitude, operators' education, etc. . . .

Energy economics is a very complex science and a lot of so called expert have little understanding in energy management.

For any urgent need send me an email or PM.

Regards
Winfredy