I’m seeing power spikes exactly every 15 minutes, during power generation only, up to 2 kW. Any thoughts on whether this is a physical effect or a computation error of some kind? I have no appliances that would draw this during the day. The problem seemed to start on Jun 3.
https://pvoutput.org/intraday.jsp?id=56013&sid=50713&dt=20180711&gs=0&m=0
Thanks.