if I have to assume average daytime load of 120kWp. Then how to calculate consumption to design PV system.

Hi Rohan,

welcome to the forum and thanks for your request.

You could calculate the energy amount by 120kW * 24h *365 = 1,051,200 kWh. With this energy amount you could create a load profile at the page consumption:

If you have a lower average load and 120kW as peak load as you wrote (120kWp), then you might calculate with a lower value and set the values accordingly to reach a higher peak load.

I hope this clarifies your question. If you have further questions, please feel free to ask.

Best regards,
Frederik