For most Indian electricity consumers, the answer is Go Solar Now!
Solar PV is a proven technology and with today’s reduced costs, the levellized cost of Solar electricity is lower than the grid electricity tariff for a lot of consumers.
For example, if a consumer’s electricity tariff is Rs. 6.5/ unit and he decides to go solar today, he can expect an IRR of anywhere between 14% – 16%, however if he delays the decision to go solar by even a year, his returns will go down to 12% – 13%.
However, if your cost of grid electricity is very low, it may make sense to wait for some time.
Run the MySunCalculator to get an unbiased view on if you should go solar now or wait.