You have many power sucker applicant. Buy your applicant according need and not bigger than you need. Check the watt usage and the star saving energy.

2) Fridge (LG side-by-side) --> Fridge suck power the most in your house. Don't set the temp max. Either medium or low if food not that much.
4) Cooker Hood ---> don't on all the way. The blower motor is high power and suck power alot.
6) A/C (2 x 1hp & 1 x 1.5hp Inverter type) --> set the temp 25c and set everything to auto. Trust me, you save a lot.
7) Water Pump x 1 --> What the hell you need a water pump in apartment. Ii is a power sucker machine.
8) Water Heater x 2 (storage type not instant type) --> You only have 2 person. Why need storage type? Imagine you need boil the water more than you need. ain't it waste? And if you keep on whole day, it will boil again if temp drop.
9) Bathroom Exhaust Fan x 1 --> power sucker too.