Hi everyone! My background is in biomass and biogas and I am getting stuck with solar. I had designed a financial model for a 24/7 operating manufacturing plant in Singapore. Electricity will be generated by solar during the day and re-purchased from the grid during the night.
Electricity purchase / sales prices are determined per 30 min intervals and vary a lot (anywhere from 0.04 - 0.20 cents per interval). I have annual prices from the past 10 years, which I can use for different scenarios. The size of PV is 2.7MWp and it is oversized to generate the entire “requirement” of the plant’s 24/7 electricity demand, with excess sold to the grid. Electricity demand is quite constant during the entire time of operations.
Here comes the challenge:
What would be the most elegant solution to get an estimation of my generation in kWh (per 30 min interval?) to which I can attach the 30 min prices to estimate my income on annual basis. This would need to feed in the financial model. The national research institute has published a solar generation profile, to be used as an estimate of generation, but it comes with 0 explanation how the numbers were obtained and I find it too risky/ questionable to use.
So far, I had played with pvLib and got 30 min GHI and POA profiles (I really don’t know what to do with that). I installed PVsyst and Heliosolar but best I could get was hourly generation.
Really looking forward to get some guidance. Developers usually use annual guaranteed output of PV I understand.
Maybe I am making the entire thing quite complicated