I started to build my panel but...... Im needing some railing for it and another plexisheet + my potting material got spilt by my dog. But other than that their going fine. Ive heard of thoese cells. I believe they are a thin film type, and atually gain power up to 10% more after first being exposed to sun light. (something to do with how their made) I was goning to use them since other people have said good things but, got a good deal on some siemmens cells. 5inch.