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Jinko solar panel review

Jinko panels sold and installed by Solar4Ever

Jinko Eagle MX 265W - 60 polycrystalline cells. 1650mm x 992mm x 40mm

Voltage 29.8V x Current 8.88A = 265W

Price $235 ($0.89 per watt)
Power loss on 30 °C day = 0.4 x 25 = 10%

Power loss on 40°C day = 0.4 x 35 = 14%

Includes 3 x Maxim DC optimisers !!

Jinko JKM 270W - 60 polycrystalline cells. 1650mm x 992mm x 40mm

Voltage 31.7V x Current 8.52A = 270W

Price $215 ($0.80 per watt)
Power loss on 30°C day = 0.4 x 25 = 10%

Power loss on 40°C day = 0.4 x 35 = 14%

Jinko Eagle 290W - 60 monocrystalline cells. 1650mm x 992mm x 40mm

Voltage 29.8V x Current 8.88A = 265W

Price $250 ($0.86 per watt)
Power loss on 30°C day = 0.39 x 25 = 9.75%

Power loss on 40°C day = 0.39 x 35 = 13.65%

About Jinko solar panels

Run of the mill Tier 1 brand, which sounds bad, but simply means that the panels are very good quality, the company is huge and financially strong, but nothing special, except...

They are the first company, in Australia, to have incorporated Maxim DC optimisers into their Jinko Eagle MX 265W polycrystalline panel, and that is really something worth talking about.

(Trina have an almost identical panel out now too)

The Jinko Eagle MX with Maxims explained...

In a comparative three day test run by one of the top solar companies in Australia, MC Electrical in Queensland, Maxim enhanced Jinko panels connected to a Fronius string inverter produced 10% more power than SolarEdge with 32 cells partially shaded (using flyscreen).

So a simple solar panel, on its own, conclusively outperformed the leading product in the World for combatting shade on rooftops.

You can read the entire blog here ... Real life test on Jinko Maxims

Everyone understands that shade is the enemy of solar and even if you have a perfect unshaded roof, you are still going to lose power from passing clouds, from bird droppings, from dust and pollen. Anything at all that partially or completely blocks sunlight getting to the 60 individual cells (or 72 or 96 depending on panel) and reduces power production.

If the current of a partially shaded panel drops, then all of the other panels connected on the same string drop in current to match the worst performing one.

SolarEdge mostly fix this by connecting a DC optimiser/MPPT tracker to every panel and then one panel can't bring down the performance of all the others.

The quite remarkable Jinko Eagle MX goes two steps better. Each of its three DC in-built optimiser/MPPT trackers (we'll called them by the manufacturer name now...Maxims) is attached to twenty cells inside the solar panel (replacing the diodes that would usually be there), so the panel is split into three sections. If there is shade over any of those twenty cells, the Maxim instantly responds adjusting the voltage and current for just those twenty cells. This greatly minimises the lost power from the panel, and much more importantly, the entire string of panels that the shaded one is connected to as well. Remarkable indeed from three little circuits inside the panel.

Therefore, if you have shade you can solve it in the most effective manner possible for about 20% of the cost of installing SolarEdge (or Enphase micro inverters).

And there's more...

As the Jinko Eagle MX panel with its Maxims is able to instantly adjust the current of the panel to match that of the others on the string, it means you can create strings of panels that are on different roof orientations. For example, let's say the inverter needs the voltage from 6 or 7 panels to properly fire up in the morning. You only have enough space on your North roof for 5 panels. No problem. Create a string of, let's say 13 panels, 5 on North and 8 on East for the morning sun. You can't do that with ANY other panel connected to a string inverter.

And there's more...

Shading of a few cells of a solar panel over a long time can cause hotspots, fractures and partial or full panel failure. Ironically, a little shade is worse than a lot. If there's a lot, then a normal panel will be able to shut down a third, two thirds, or the entire panel using 3 diodes. The Jinko Eagle MX has replaced these diodes with Maxim DC optimisers, and they stop the heat build up in the first place, so no damage. If you have the time, or inclination, there's a white paper by Maxim here that explains all... White Paper by Maxim

And then, of course, there is the catch....

Enphase and SolarEdge have long been known to push a weak, on the bordline, TV reception over the edge, and Maxims are no exception. Before you buy these panels, assess your own TV reception strength and talk to your neighbours. If it's strong, no problem, but if it's weak, then perhaps go talk to a TV antenna person first about what can be done about upgrading TV reception. You have been warned. We do not take any responsibility...and we'll get you to sign a piece of paper to that effect before we take your order. The real life test by MC Electrical explains more on this... Real life test on Jinko Maxims

We hear on the solar grapevine that Jinko have a new model coming out that addresses the TV problem and we've emailed Jinko to confirm or deny. If they fix this problem and embed the Maxims into larger panels (e.g. 290W) then it's going to be very hard to justify selling ANY other solar panel.

Jinko have a nice little video (totally non technical) on YouTube about these panels

https://www.youtube.com/watch?v=6j3N314-1Ss

And one more catch....
Whilst saving yourself a couple of thousand dollars with these panels over buying a SolarEdge or Enphase system is very attractive, please remember that the panels are connected to a 'string' inverter. Therefore you will not get reporting on the performance of each individual panel as you would with SolarEdge and Enphase.

 

 

 


 


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