Installer asks for last month's irradiance
- Caller
Hi, I'm putting in a proposal for a rooftop system in Phoenix. Can you pull the radiation figures for March?
- Agent
Sure. Can I have the postcode or coordinates for the site?
- Caller
Use 33.45 and minus 112.07.
- Agent
Got it. For March at that location, the average daily global horizontal irradiance was 5.9 kWh per square metre. I can email the full daily breakdown to you now.