Digital delivery is here and we’re going to need 10x the broadband capacity in a couple of years.  Now he has the right-of-ways for all the fiber we need.

And what about that new electrical grid?  Is it feasible to lay towers over tracks?  I don’t know, but I do know that he now has a path to take all the new electrons from solar and wind farms in the Southwest and the Texas Panhandle to Southern Cal and the Midwest.

One thing’s for sure: No one ever accused him of thinking short-term.

Just add water

March 27, 2009

Next week MIT will announce a new electrolyzer that is cheap, efficient, and works at room temperature.  So just by using a little water, electricity can be stored as Hydrogen, to be converted back as needed using a fuel-cell.

This could make it radically simpler and cheaper to store electricity than it is now with batteries.

The missing piece of the puzzle then is a much cheaper fuel-cell.

Georgia Tech researchers can treat the surface to create microscopic pyramids which repel water and dust (to maintain full eficiency), and help capture more light and reflect less.

Currently in solar cells one photon excites one electron and the rest of the energy is dissipated as heat, but using ‘quantum dots’ that trap the photon longer more electrons can be affected.

This kind of thing is why I think solar efficiencies won’t come gradually but rather in a series of major breakthroughs.

Germany is installing 6 Multibrid M5000 turbines offshore from French company Areva.

Each produces 5MW (about 5,000 homes).  Blade diameter is 120M.  Carbon fiber is used throughout to make them lighter and stronger.  They are mostly assembled onshore, so a lot easier to install.

Stimulating a new economy

January 19, 2009

Feldstein and Stiglitz both warn ‘what after the stimulus money is gone?’.  We have been propped up by two bubbles the last decade.  What will prop us up after we’ve used our borrowed money in two years?

Friedman puts it nicely: “If we spend $1 trillion on a stimulus and just get better highways and bridges — and not a new Google, Apple, Intel or Microsoft — your kids will thank you for making it so much easier for them to commute to the unemployment office or mediocre jobs.”

Fortunately I do see the foundation for a new economy in two specific elements of the emerging package:

A third element of the package is a wildcard: Healthcare reform.  Universal healthcare is a moral imperative, but the real value of reform is in increasing efficiency.  The current system is so expensive it is a real drag on the economy.  We must reduce costs and optimize delivery using technology, standardization, regulation and reorganization to a point where cost per insured is cut in half, otherwise we will still be at a disadvantage.  Most of this change will depend on Obama and Dashle’s reform skills, and not on how much we spend via stimulus package.

A fourth one is necessary for a world-wide recovery: Chinese people must start spending and enjoying the fruits of their labor.  The China-lends-us-money-so-we-can-buy-their-products dynamic is over.  This is obviously beyond our control, but well within the command of the central party committee.  Credit cards anyone?

Dirt cheap energy

January 19, 2009

A massive investment in solar and wind energy will reduce harmful emissions as well as our dependence in foreign oil.

More importantly however, it will usher in a new era of increasingly cheap energy, in two phases:

Stage One – First five years

Wind and light from the sun are free, therefore the raw materials for solar and wind energy have zero cost.  The only variable costs of these facilities are insurance, maintenance, minimal payroll and maybe land lease.

However the initial capital investment, and servicing the debt that goes with it, is higher than traditional plants.  So if the cost of a kw/h from wind or solar is higher than one from coal or gas it is due to the higher initial capital investment.

When the government spends 32 billion in solar/wind production and transmission infrastructure these capital costs will be nationalized as part of the stimulus package, and there will also be no direct interest expense to be paid by each project.  Perhaps the government will retain part of the profits, or have some other mechanism of recapturing some of the taxpayers’ investment.  But even so the wholesale price is likely to be much lower than coal’s.

Stage Two – Beyond 2014

The explosive investment in solar and wind technologies will radically increase their efficiencies.

Between 1980 and 2000 wind cost per kw fell from $2,600 to $790, mostly via increase in blade size and more efficient design.

Photovoltaic cell efficiency is still less than 20%.  They are also expensive due to their exotic materials and complex build processes.  This means there’s another 80% worth of energy to obtain from the same area via optimizations, as well as lower capital costs from streamlined construction.  In other words, there is a lot of room for improvement.

Thanks to a recent wave of venture capital investment, government programs, and academic interest, there are hundreds of new startups, labs and individuals doing promising research in this area where only a handful were just three years ago.  These actors will only speed up their research as the market for their products explodes overnight.  Each one is attacking the problem in a different way, and as is common with high-risk ventures, most will fail, some will succeed, and one will find a technology that is truly radical.

It is that one company that finds a new material or process which doubles the PV or turbine efficiency that will change the game entirely.  I have little doubt there will be one or two such disruptive players.

Let’s do the math: If we manage to increase efficiency of PV cells to 50%, and lower production costs to one third, that would reduce the cost of solar energy (non-subsidized) to one eighth what it is today!

Piezoelectric wheels

December 27, 2008

I’ve been hearing about the Tokyo sub installing piezoelectric pads in their turnstiles to generate electricity from travelers’ steps.

Now an Israeli company is testing roads that gather electricity from cars passing by.

Why not on car wheels?  I’ve been thinking about this for a while.  I don’t know how much can be obtained, but if it can supplement even 30% of the car’s needs that would really improve range for an electric vehicle.

I suppose you’d need piezoelectric tiles on the inside of the tire, around a large-diameter axle.  As one goes under the weight it generates a positive charge.  At the same time pressure is released from another tile, which generates a negative charge.

Sounds simple, i’m sure there’s a gotcha there I’m not seeing.  Any EE out there would care to explain my folly?

Not so clean coal

December 26, 2008

A dike broke in Tennessee, releasing 800 olympic pools’ worth of coal ash sludge from a powerplant.  No fatalities and little structure damage resulted, fortunately.  But the 400 acres of land now covered under up to 6 feet of toxic sludge will take years to clean up.

That’s right.  Hillary at State was shrewd, almost machiavelian.

But putting Steven Chu at Energy effectively ends five decades of inaction on energy independence and transition to renewables.

It’s not just that he is a highly able and regarded Nobel winning physicist, or that he’s been at the forefront of renewable research for a decade, or that he’s been administering a 1.5B annual budget at Lawrence Berkeley.  Those are definitely welcome qualities to be sure, especially compared to the industry types and career politicians that have held the post recently.

However it is his understanding of how industry and academia can work together that will prove most valuable.  He negotiated a 500 million partnership between Berkeley and BP, and navigated through the touchy IP issues, with many critics at Berkeley breathing down his neck.

This addresses what I think is the biggest risk to Obama’s energy plan (other than the obvious political opposition by the GOP and oil/gas/coal):  The tendency for industry and academia to distrust each other and not work together openly and timely.

PBS’s News Hour ran a good piece from May 07 this week.

Too bad this announcement was overshadowed by the Blogojevich hoopla.