Renogy 4pcs, 300 Watt 24 Volt Monocrystalline Panel 1200W Grid Large Solar System Residential Commercial House Cabin Sheds Rooftop, 300W

So I've only ever had 100W panels, so when I decided to go to 24v, I didn't realize how much larger 300W is to 100W, which may be why the other reviewers are surprised at the size. I didn't see measurements. I also didn't know how it would actually ship, which it went out by truck freight. Since I had ordered 4 panels. Thank goodness, the driver let me know, since I live in a remote area, so I could guide them to my home. They came during the day, and were very communicative, had a smart phone so I could share location with them. I was very happy with the delivery services. But just so you know, if you live in a town, where they have two streets with the exact same name, its possible according to the shipper, that the driver could just drop them at the address and leave, without any verification if its the right street LOL. Which I guess they can do. But I'm so thankful to the driver for taking that extra step. These are mono crystalline panels. They are high end, well made panels. Mono Crystalline however, has lower specs, if there's partial shading. But when there's no shading you get the benefits of mono crystalline.

First solar panel purchase. Shipping speed was decent, packing was a bit on the week side, but for the size of the panel and with the free shipping I guess it was ok. As soon as it was delivered noticed a foot print on cardboard box about in center. Took it out of box and other than a couple of scratches on corner of frame it looked ok. Took it outside and check open voltage and it was good. Have had it for almost a week and it puts out about 230 watts with direct sunlight. The advertised watts is 270, in a lab, so I'm very happy with output. The size is large but I'd rather put 1 or 2 of these up than 5 or 6 smaller panels. Have it powering the lights and chargers in my garage hooked up to a 1000 watt inverter and a 100 ah gel battery and all works well.

These 300 watt panels were the exact same size as my 250 watt panels (from a different vendor years ago). They are producing at least 30 more watts than the old ones which is what I calculated it should be so they are 300 watt panels. I will order more as budget allows and end up swapping out the rest of my 250 watt panels.

As you can see in the pictures, the top panel (1 of 5) did not have a protection layer. Direct contact with the cardboard box exterior. Also, no corner protection for some panels. However, panels seemed to be undamaged surprisingly. Packing tape residue was on the top panel due to not have a Styrofoam sheet protection. Will need to clean that off. Hope to test panels on the next sunny day which I have off work and will report back. Overall, everything appears to be physically fine with the order.

I've several panels of various sizes by Renogy, my latest 5 were 270w panels, roof mounted, and I must confess this is an excellent product with superior standards it seems. The panels are well made and priced decently. The customer service is also exceptional with knowledgeable folks of solar related issues. Thanks Renogy

These panels are rated at 300 watts but 250 is more like it, and that is wattage to the MPPT inverter. The open circuit voltage is 37.67 volts, it should be 39.82. So I called Renogy technical support. Renogy support first wanted to see a picture of my Fluke 787, so I sent it, I guess they did not believe me. Then they wanted me to measure the open circuit wattage. I informed them that if a circuit is open there is no wattage as nothing is connected. Then they apologised and asked me to measure the open circuit current, I gave up. They also said that if the panels are producing 300 watts all is ok, strange as the support ticket was for under performance. I have eight Renogy panels and that is all that I ever will own.

Not wired properly. Still haven't gotten it to work yet. I waited too long to be able to return it but it was listed as only cosmetic issues. So far it's been a waste of money.

The solar panels arrived when expected. They look great and work great. Buying through amazon prime saved me alot of shipping money