Moore’s Law depended (and still depends) on a constant flow of breakthrough technologies, processes, scale, and designs. You can’t necessarily predict how Moore’s Law will continue to hold two years from now, or five years from now, but you can be confident that through some combination of technologies, processes, and designs, the price/performance of IT will continue to decline at an exponential rate.
The top five green energy stories of 2008 give an indication that the same types of forces are at play in the green energy world. Numbers 1, 2, and 3 each represent a potential 10x reduction in the cost of the most expensive part of a particular energy flow. For number 4, Gore used the bully pulpit of a Nobel Prize and Oscar (and, oh yeah, he was nearly president) in a most constructive way. And number 5 illustrates that green energy technologies are on a growth rate of doubling about every 18 months.
Did these stories excite you as much as they did me? Were there other green energy stories in August that you feel are more important?
I wrote on Monday about why I am optimistic that we will come out of this energy mess in excellent shape. But, my optimism is not unalloyed – there are a lot of questions still to answer.
Is there truly enough capturable solar energy streaming down on the Earth to power a good lifestyle for all 9 billion of us in 2050? Clearly not, at least at the U.S.’s current per capita energy intensity. What about at 50% of our current energy use? That’s a target that many think we can accomplish here in the U.S., so why not around the world?
What about all the C02 we’ve stuck up there already? Can we do something about it that won’t end up causing as many problems as it solves? Certainly sensible steps like reversing deforestation will help a lot, but do we have time, and do we know how? Can we grow a rainforest from a burned-out meadow, even if it use to be a rainforest? This is not clear – but we should figure it out.
Can we do any of this fast enough? I’ve argued that the technology and knowledge are here for reducing our energy footprint in the U.S. by 50% and replacing all of the remaining energy needs with renewables, but is there time and will to do it? The sheer manpower that it will take? Even if owners of commercial real estate were willing to do the necessary retrofits to achieve the goals, because they are cost effective? More importantly, if every one agreed to do it, are there enough architects, contractors, HVAC installers, and electricians to do the work?
There’s a similar question for residences – most residences get enough solar energy flux on the roof to offset a good portion of their electricity use – but even if the cost were free, after first year saving, who would do the 100 million installations? Even if spread over ten years, that would keep 25,000 installers busy every day.
There are many more such questions – can we successfully combine distributed power generation (e.g., on residences) with utility energy on a gigantic scale? Where do all the materials to do these installations come from?
I’d love to hear your questions and comments about whether you’re optimistic, the obstacles you see in the road ahead, and your ideas on how to overcome the roadblocks.
The signs are pointing to a critical convergence that, to be honest, is coming just in time. The world’s will is aligning. Climate change, oil prices, pollution, growth, commuting – these and other factors are forming a message in society’s mind that says “things are not good and they must be fixed.” Businesses and governments, at the same time, are realizing that the changes needed to achieve sustainability are not going to be a drag on the economy but can actually be profitable while being good for society as a whole. Of course, the high and rising price of oil has something to do with this as well.
And technology is improving – finally – to the point that our remaining energy needs, after the 50% reduction in energy intensity possible via efficiency, can be cost-effectively replaced by renewables. Scientific and technical announcements just in the last two weeks – factor of 10 reductions in fuel cell and hydrogen splitting catalyst costs; new materials lighter, stronger, and cheaper than carbon fiber; and new ways to collect sunlight and convert it to electrical, thermal, and chemical energy – will, when available commercially, combine with all the other technologies that continue to stream out of labs and corporations, to drive the prices of sustainable energy down, down, and farther down.
So what we’re seeing at this moment in history is a powerful combination – the will to change with the technical ability to make the change, and the understanding that the change is cost-effective and in many cases profitable.