Anotherpower.com Forum
Renewable Energy Questions/Discussion => Solar (heating or electric) => Topic started by: Freejuice on March 01, 2012, 05:37:41 pm
-
That enphase kool aid ain't too bad considering today's production:
https://enlighten.enphaseenergy.com/public/systems/jstg59025
-
Are those the Evergreen panels you recently purchased? Looks good.
-
Hi Rich,
Thanks, yes they are the Evergreen's ( ESE 210's) I really wanted the 225's Sun was selling but moved too late to snag any of them....groan
-
I wound up with the 215's instead of the 225's as well. In my case I have limited real estate on my city homes flat roof on which to deploy more panels, so higher panel efficiency can make a difference. Rich
-
Rich,
Sorry I have 215's as well the most I have seen them produce is about 207 watts on the M-215 enphase inverters....today was a record day made almost 30 KWH with the solar alone.... as windy as it was todat too I feel sure I probably went over 40 KWH.
If you run the graph it shows the panels today peaking out around the low 190's
https://enlighten.enphaseenergy.com/public/systems/jstg59025
-
I have 215's as well the most I have seen them produce is about 207 watts
Hey Gavin, that sounds pretty darn good to me!
207(real life) / 215(ideal conditions) = only 7% different, including losses and under less than prime conditions.
G-
-
Hi Glen,
Yea its these cool days in early, early spring which helps :)
LOL, I bet this summer I will be lucky to see 175 watts per panel.
Enphase claims these inverters ( M-215's) are rated 96% efficiency.
Most of the panels hover around 4-6 watts of each other during the day. Only once or twice so far have I seen them break the 200 watt threshold. They usually cap at around 190 or so.
Yesterday was the best they have done for total output it was like 4260 watts for a short peak. ( damn it, after checking my invoice they are indeed 210 watt panels...what was I thinking? maybe after I missed out on the 225's I drilled down to the 215's and still missed out....so I guess I still had that on the brain....oh well)....
Anyway, 4620 is my potential max and after those losses I was lucky enough to hit 4260.....I'm happy.
I have about a 125 foot run to the main breaker panel, so enphase and another fellow who hangs around this board suggested I "center-feed" each sting of 11 panels to cut down on line losses.
So each string has a junction box between the 5th and 6th panel. for L1, L2, Neutral and Ground.
Since I was determined to grid tie, I went with enphase because they claimed 96%, which is about the best for string inverters too and they also had a 25year warranty...hopefully they will still be in business in 25 yrs.