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…]

SolarQuotes To Help Pollinate Install More Off-Grid Solar In India & Nepal

A family in India with a solar powered light

An entrepreneur demonstrating a new solar powered light in India. A little solar power can go a long way.

Starting today, SolarQuotes will be helping Indian and Nepalese families install off-grid solar systems. Specifically 3.3 watt, 17 watt-hour off-grid solar systems. [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…]

Large 72 Cell Solar Panels Can Go On Home Roofs But Beware Of Shoddy Installers

72 cell vs 60 cell solar panel - size

Large 72 Cell Solar Panels Can Go On Home Roofs But They Must Be Clamped Correctly

This article is about big solar panels.  Bigger than the standard sized 60 cell panels commonly installed on residential roofs.  Those are only around 1m by 1.65m.  I’m talking about larger ones with 72 cells that are about 1m by 2m.  These larger panels are mostly used for commercial installations and solar farms, but they can be used on household roofs provided they are installed properly.

Unfortunately, this doesn’t always happen. [Read more…]

The Best Tilt For Solar Panels By Australian Capital: It’s Not Equal To Latitude

best solar panel tilt angles

This article is about the best angle to tilt solar panels for the maximum possible energy yield over a year.  It’s a common belief that panel tilt from horizontal should equal a location’s latitude, but this is not quite correct. [Read more…]

Pmax And NOCT: How Solar Panels Perform In The Heat

Pmax And NOCT - solar panels

Solar panel output reduces (slightly) as the temperature rises.

It’s an unfortunate fact the hotter it gets the worse solar panels perform.  As fossil fuel generators can suffer even greater efficiency loss due to heat, this is nothing to get all steamed up about.  But it’s still not a good thing.  [Read more…]

PERC Solar Panels And LeTID — Cause For Concern But Not Panic

PERC solar panels - Light and elevated Temperature Induced Degradation (LeTID)

Solar panel manufacturers are always on the lookout for low cost improvements they can make to get an edge over the competition.  Or rather, stay in competition, as they are involved in a Red Queen Race1 where they have to run as fast as they can just to stay where they are. [Read more…]

Solar Panel Direction: North Doesn’t Always Give Most Energy

solar panel direction

Optimal Orientation For Solar Panels In Australian Capitals: Directly North Isn’t Always Best

It is generally accepted the best direction to face solar panels to get the maximum possible output is directly north.  While this is not a bad direction, it is often possible to get a very small boost by having them face slightly away from due north.  Usually facing them a little to the east will improve output, but in some locations a small nudge to the west is best. [Read more…]

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