Solar Panel Backsheet Defects Rising Says DuPont PV Reliability Report

solar panel back sheet failure

Backsheet failures from the field. Images: Crap Solar FB Page

On the 19th of June DuPont, the world’s largest chemical company, released their Global PV Reliability 2019 Field Analysis report.  It contains disturbing news on the reliability of plastic backsheets used for solar panels. [Read more…]

Sunrise TV Gets It Wrong: Installing Batteries Will Lose Most Households Money

CH7 Sunrise Solar Power And Battery Segment

Mainstream media gets it wrong on batteries. In other shock news Pope declares he’s a Catholic.

If you told me two years ago you spent $46,000 on a solar and battery system and it saved you $4,000 a year, my reaction would be, “I’m sorry.  I’m so, so sorry.” [Read more…]

What Is A Cast Monosilicon Solar Panel?

what is a cast mono solar panel?

You’ve probably heard of mono and poly panels. Now there’s a third type: ‘cast-mono’. But what the hell is it?

Silicon is the Queen of solar power.  Some people say Coal is King, but I say our Queen can kick your King’s arse. [Read more…]

6th Canberra Battery Test Centre Report — 61% Of Tested Batteries Faulty

Battery Test Centre June 2019 update

The Canberra Battery Test Centre has released their latest six monthly report.  It took them 9 months to get it out, but I’m glad they took their time, as it’s a beauty. [Read more…]

New Solar Panel Reliability Scorecard For 2019 — GCL, JA, And Longi Do Well

PVEL solar panel scorecard - June 2019

A new Module Reliability Scorecard was published earlier this month.  It reveals the sadistic practices of a standards organization that subjected solar panels to torturous tests so they could announce which ones came out on top. [Read more…]

SCOOP! — Canadian Solar Product Warranty: Now 12 Years

Canadian solar product warranty increased

Today I spoke with Michael Rush, the head of Sales and Marketing for Canadian Solar in Australia.  Well, I say I spoke to him today, but you’re actually reading this during my tomorrow — so my today is now your yesterday.  I guess time really is a wibbly wobbly thing.

He told me some interesting things.  They included: [Read more…]

Simple Payback Time For 6.5 kW Of Rooftop Solar By Australian Capital — June 2019

solar panel payback

Discover typical solar payback in 2019 for each of Australia’s state capitals.

One year and one month ago I wrote about the simple payback time of rooftop solar, which is how long it takes the savings from solar power to equal the cost of a system.  In most Australian capitals it took around 5 years or less, which meant rooftop PV was one of the best investments households could make.

I have done the same thing again — except differently [Read more…]

6.6 kW Solar System: How Many Solar Panels?

Solar panels - 6.66kW system

6.66 kW is the largest solar system most people are allowed (without resorting to export limiters). How many panels do you need to reach the magic number?

If someone casually asks me how much solar they should install, I may simply tell them they should fill their roof with as much capacity as they reasonably can.  But after learning the details, I often recommend installing as close to 6.66 kilowatts as possible. [Read more…]

Green Power Vs. Rooftop Solar: Solar Easily Wins But Having Both Is Greenest

GreenPower vs. solar power - which is greenest?

A while back a reader asked me for a post on rooftop solar vs. Green Power.  Or, if you spell as badly as a government national program — GreenPower.  So here it is: [Read more…]

Delta and Huawei Commercial Inverters Beat Fronius & SMA In PVEL Testing

PVEL testing - top performing solar inverters

And you thought the election was a shock result…

I have good news.  PVEL —  a standards testing company — has released a solar inverter scorecard.  It describes how a dozen different tests were performed on a variety of inverters and which were the top performers [Read more…]