Economist Writing Every Day

The story of renewable energy changing the world for the better has always been about solving two parallel concerns: figuring out 1) how to produce clean, renewable power cheaply and 2)how to store the power generated for long periods of time. Over the last decade the cost of solar and wind power generation has plummeted. It’s not just that its cheaper per megawatt than fossil fuels, its also that the rate of cost decline shows not signs of slowing. But to fully displace fossil fuels also requires solving the “intermittency problem”. You can store piles of coal and barrels of oil, but how do store solar power for use when the sun doesn’t shine?

If we allow ourselves a moment’s credulous excitement and believe the press releases from Form Energy, a major step towards solving the intermittency problem has been made. I am in no position to judge the credibility of their technology or their capacity to effectively scale its development and distribution, but I find the opportunity to engage in a little futurism too exciting to resist. (Warning: I’m an economist, not an engineer. But even if I have the specifics wrong here, it’s still a fun exercise.)

The new technology in question is an iron-based battery that stores power for upwards of 100 hours. This reads to me as meaning two things:

1. Power is going to become very cheap
2. The batteries are going to be heavy

The second part is important. These aren’t the batteries that Tesla wants to put in their cars. They are, however, the batteries that can make for a local power station…or perhaps enable a perpetually self-powered large train?

If you’ve been daydreaming about high-speed rail remaking day-to-day American life, today is potentially a very big day for you. If you want to see millions of travelers speeding along rails in the 21st century, however, you need to lure them out of their cars and business-class flights with a speed and cost proposition that is not just better, but irresistible. Even more, you need to lure them in numbers sufficiently vast that cities (states? nations?) face a value proposition so great that its worth making fixed cost investments measured in hundreds of billions of dollars. A 10% reduction in cost isn’t going to do that. Appeals to community, civic duty, environmental stewardship — I’m pretty sure that will have much effect. What I think might do it, however, is cutting travel costs in half.

Why stop at half though? What happens if a $500 billion investment means urban residents can travel for a twentieth of the cost we associate with cars and planes today? What if that investment only truly pays off if other cities on a route make commensurate investments? It’s easy to point out the challenges of multi-state coordination in a country with highly polarized politics. What’s maybe easier to forget are the challenges that success might bring.

In a world where public transit pushes the marginal cost of travel to a tiny fraction of that faced by travelers in regions without similar fixed cost investments, the urban-rural divide becomes all the starker. Furthermore, its not every urban center that participates – it’s only the ones in the network. Automobiles, while not necessarily inexpensive, evolved into a relatively democratic mode of travel. Combined with the interstate highway system, hamlets and towns could pop up all over the country, and sometimes hang around long after local industry had dissipated or fled. In a world extraordinarily low-cost transit, the gravity of the dense urban areas could become irresistible. Pick a side in a congress heavily gerrymandered along urban-rural lines, and imagine you’re a representative from either side, and it doesn’t take much reflection to realize that no one will be on the sidelines for these votes. If you’re from a rural district, your political life and the future of your party depends on stopping free high speed rail from ever seeing the light of day. Perhaps ironically, though, if the costs per mile of NYC subway are a relevant metric, union negotiated prices may be an even bigger obstacle.

We’ve spent the last year adapting to technologies that left us thinking half of us could work from home, that we could live anywhere, dispersing us to every corner of the globe in a thin layer of extremely online exurbanites. Today we got a glimpse of a different technology, one that might pull us closer together again while taking a major step towards addressing global climate change and increasing the wealth of billions of people at every decile of the income distribution. We’ve lived our lives on landscapes defined by the maps first drawn by sailors, caravans, and indigenous peoples. Maps full of rivers, mountains, and intricate webs of roads. If the next round of massive fixed costs investments allows those along its chosen network to enjoy the benefits of near costless travel, don’t be surprised when the defining maps of the future look like the London Tube.

Was there a Great Stagnation in technological development? Definitely maybe! Are we still in one? Definitely maybe not! Am I the correct person to adjudicate such things? Absolutely not.

When we talk about stagnation, we focus on the sort of innovation that is most pertinent to economic growth, which means technology as it relates to production. More than just important, with any small amount of reflection on the human condition and how far we have come as a species, in a certain light the technology underlying production is very nearly the only thing that matters.

Only, in a far more comfortable and modern way, it’s not. With all due respect to the protests of those who used to hike 10 miles to three jobs, uphill all 4 ways, every day through the snow, our lives are about consumption. And before you cast me into The Pit of a Thousand Shopping Malls, I mean consumption in a very broad sense. Consumption of time with family and friends; consumption of the 5 senses; of active introspection and passive entertainment; of every new Zelda game they can possibly create.

And all I’d really like to do today is cheer you with a delightful reminder that there will never be a great stagnation of consumption goods. There really won’t be! Not because human genius is unlimited (though maybe it is, if you include exponential AI learning). Rather, it is because our wants are infinite, and from those wants we can fabricate a cheery synthesis of Say’s Law and the unrelenting optimism of Endogenous Technical Change – that Demand Creates its Own Innovation.

That might be overly cute, but I’m not taking the “infinity” in play here lightly. That infinity of wants is not a product of our imagination or the broad dimensions in which we can consume. That infinity is born of our capacity for niche refinement, for variation. If you don’t believe me, go a farmers market. Go a Wegmans. Go to your local Asian grocery store. Google “heirloom tomatoes.”

Our consumptive lives will never stop improving because each new good brings with it the infinite possibilities of small changes, of bigger/narrower/weirder/quieter/redder/hotter/faster/easier/drowsier/friendlier/adjective/adjective… And with each new variation comes a roll of the dice that just might send us down forking paths of inspiration and radical departure from past convention, toward that new way of living our lives that no one had thought possible before.

There was a time when we didn’t have enough calories, so we innovated ways to make more calories. Once we had enough calories, we invented better calories. Then we invented foods. Then meals. Then experiences. Then stories. Then identities. Each stage of innovation brings with it not the disappearing of low-hanging fruit, but an expanding horizon of all the possible ways our life-sustaining caloric consumption goods might evolve, and the infinite stories they might help us tell through the lives we live. And we will never run out of stories to tell.