nova-exarch
New Member
Our system is NEM (HI), 12 panels (255W Solar World Sunmodule SW 255) with Enphase M215-60-2LL inverters on the panels. The design sheet says it has a max of 2.58kW AC. Quick internet searches for 2.5W systems show they can produce 250-300ish per month (depending on conditions). The previous owners showed us their utility bill showing 250-270 was fairly common in summer months.
In the year we've been here we've seen a steady decrease on the power sent to the grid (I double checked, they're reading the meter correctly):
DATE REC
6/10/2023 26
5/11/2023 30
4/12/2023 37
3/13/2023 42
2/9/2023 68
1/11/2023 79
12/12/2022 53
11/10/2022 41
10/11/2022 79
9/9/2022 152
8/10/2022 140
7/12/2022 179
6/10/2022 207
At first I attributed the decrease to the rainy season, cloudiness, and maybe even dirty panels. I finally located the Enphase Envoy unit (it was disconnected and shoved in a corner of the garage by previous owners) and got it connected and have had it running for over a week now. It's showing that the system is producing 80/week:
Time Period Energy Generated
Currently 1.08 kW (it's somewhat cloudy today, I've seen this go as high as 2.2-2.3)
Today 1.61 kWh (early in the day)
Past Week 82.5 kWh
Meanwhile... the wonderful meter is only showing 7kWh difference from the last meter reading from a month ago.
Any ideas on where the juice is going???
In the year we've been here we've seen a steady decrease on the power sent to the grid (I double checked, they're reading the meter correctly):
DATE REC
6/10/2023 26
5/11/2023 30
4/12/2023 37
3/13/2023 42
2/9/2023 68
1/11/2023 79
12/12/2022 53
11/10/2022 41
10/11/2022 79
9/9/2022 152
8/10/2022 140
7/12/2022 179
6/10/2022 207
At first I attributed the decrease to the rainy season, cloudiness, and maybe even dirty panels. I finally located the Enphase Envoy unit (it was disconnected and shoved in a corner of the garage by previous owners) and got it connected and have had it running for over a week now. It's showing that the system is producing 80/week:
Time Period Energy Generated
Currently 1.08 kW (it's somewhat cloudy today, I've seen this go as high as 2.2-2.3)
Today 1.61 kWh (early in the day)
Past Week 82.5 kWh
Meanwhile... the wonderful meter is only showing 7kWh difference from the last meter reading from a month ago.
Any ideas on where the juice is going???