That’s a big luxury and need today. In Mumbai, a powercut is rare, but in many other parts of India, uninterrupted electric supply is rare. Again, it is a matter of using what we have wisely.
Switch off lights, fans, and anything that consumes electricity when not in use. Decrease your bills by exploring solar power. Switch to lower consumption versions of appliances. Switch off all things not needed when leaving home. These measures will help extend the utility of existing power resources as well as save money on electricity bills.
When cooking, use gas wisely. A flame that extends beyond the base of that utensil is gas going waste and only charring food on the sides of the utensil. Turn it lower and save yourself some cleaning effort while you’re at it.
Keep your ingredients ready or easily accessible while cooking, so that you don’t cook food unnecessarily longer, consuming more fuel and making the food less tasty. Use pressure cookers to speed up cooking and save fuel too.
Solar cookers are great, if you live in a place where you have sunlight, and an area where you can place your cooker safely. Food cooks slowly, retains maximum nutrients, utensils are extremely easy to clean, and no bills of any sort. Sunlight is free Solar cookers are extremely easy and inexpensive to make.