Strategically Blogging

Lasers Assisting with Cancer Surgery

Allen Nogee 09/03/2015

Finally an exciting new laser medical application that could save many lives.

The End of Non-LED Lighting is Approaching

Philip Smallwood 09/02/2015

A few weeks ago, EdisonReport reported that GE will be discontinuing some incumbent lighting technology luminaires, and will no longer be producing any new custom non-LED luminaire configurations starting in 2016. 

IKEA Lives Up to its Promise to Only Sell LED Bulbs

Stephanie Pruitt 08/18/2015

In 2012, IKEA, the world’s largest home-furnishings retailer, vowed that it would only sell LED lamps in its stores by 2016. Three years later, it looks as though the retail giant is keeping its word and getting a head start.

The End of the Smartphone Era Has Arrived. Bring in the Lasers.

Allen Nogee 08/06/2015

It’s really hard to believe that it has been just a little over 8 years since Apple introduced the iPhone, the smartphone which more or less started the smartphone revolution. In 2014, close to 1.2 billion smartphones were shipped, with Apple and Samsung leading the pack. But smartphone shipments are slowing, so manufacturers are doing what they can to get new customer by adding lasers.

Remembering Dr. Roland Haitz

Shonika Vijay 08/06/2015

We heard about the passing of Dr. Roland Haitz in late June and we wanted to take this moment and remember the pioneering figure behind the evolving world of LEDs. We give our condolences to Dr. Haitz’s family, friends and the many lives his research and work touched.

The solar market and the 2nd-Derivative Paradox

By Tom Hausken
How could equipment sales in an exponentially-growing market be anything but upward? It happens all the time. Welcome to the 2nd-Derivative Paradox. That's my name for the trap that one can fall into when it comes to capital equipment markets. Solar is a great example. It's hard to explain the paradox, though, so bear with me.

Start with installed capacity. If you are a power generator, you think in terms of the cumulative installed generating capacity in the world. This is what the users actually use. The figure shows three scenarios how that might play out, and they all look pretty much the same in this chart. Nice, steep slopes. Note how they all start at the same point and end up at the same point.



Then look at panel shipments. But the solar panel industry isn't interested in what's already out there. It needs to ship new panels every year. The shipments amount to a 1st derivative: the new capacity that's added to the infrastructure every year. Now the differences in the scenarios show through, as shown in the second figure. But the scenarios all show steep upward growth. What's to worry about?


Now look at panel manufacturing equipment. The solar manufacturing equipment industry, and that includes lasers--isn't even interested in solar shipments, but the need for more manufacturing capacity to make the panels. You only need more equipment when you are shipping more panels than before. That amounts to a 2nd derivative of the cumulative generating capacity, and can give wildly different results. New equipment is shipped in all three scenarios, but in the "sustaining" scenario the equipment shipments are flat year after year, while in the "slowing" scenario they start out strong, but then decline. Ouch.

Other traps. Of course we would all like to live in the "growing" scenario. The trouble is, strong positive exponential growth doesn't last indefinitely, no matter what they say. And that's not even considering some ups and downs along the way, like this year. A slight shift in the solar panel shipments wreaks total havoc for equipment shipments.



Other things that juice equipment sales. The same trap exists in other industries, too. But there are other details to consider. First, there is usually some churn in suppliers. Machines also get obsolete. And there is also the early obsolescence forced by things like Moore's Law. These all have to be considered.

Watch that 2nd derivative. Don't get me wrong. I love solar. I had a summer job at TI testing solar cells back in the Jimmy Carter era. We all believe it's going to be a great thing in coming decades. But it's not enough that the cumulative generating capacity will be on a steep upward slope for years to come, because when it comes to manufacturing equipment, it's the 2nd derivative that counts.

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