I recently installed a 6 kWh solar system with enphase-enlighten monitoring system, but am having trouble interpreting the data. In the attached screenshot I've highlighted energy usage on 04/24 from the app.

I'm confused as to why from ~9-12pm my system was producing from 3-5 kW but yet I was still importing ~3.8 kW from the grid. The rise in demand from 9-12pm was because I turned the spa heating on. You can see similar spikes in usage later on the evening when spa heating turned on again

It almost seems like while my system is producing energy, that energy is not actually being used, and I'm still importing from the grid as before I had solar?

Any explanations are appreciated.
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