I never used to listen to very many podcasts. But lately I've started doing it while heading to/from meetings, either in the car or on the train. This past week I listened to a Bankless podcast talking about crypto and AI, and one of the arguments that was made was that it's probably a safe bet to assume that we're going to need dramatically more compute and electricity in the future.

This seems obvious enough. If you recall, there's no such thing as a wealthy, low-energy nation. If you're a wealthy country, you consume a lot of energy. And that's why Build Canada recently argued that we need a kind of energy revolution. By 2050, it's likely Canada will have 2-3x the electricity demand that we have today. So today I thought I would share a few related charts.

Here's electricity production by source across the world. Coal dominates.

Looking at renewables more closely, we again see that wind and solar are making a run for it. And if you consider that solar is one of the fastest growing energy sources, it's not inconceivable that it will start to become a more dominant source in the near term. In the US, solar PV projects make up the largest share of new planned generation capacity.

But the US is not winning this race today. Right now it's China. (Chart below sourced from here.) They have the largest cumulative solar capacity, followed by the EU, and then the US. That said, coal still forms a dominant part of China's energy mix, and the country continues to construct coal-fired power plants to meet its short-term energy needs.

It's unfortunate that Canada is not on this list. That needs to change.

Cover photo by Benjamin Jopen on Unsplash

One of the things that you need to do when you're constructing a building is arrange for new utility connections. Sometimes there's enough capacity to support what you're building and sometimes the capacities need to be upgraded (which usually becomes the responsibility of the developer).

But according to this recent Financial Times article, some new applicants in west London are now being told that there won't be "sufficient electrical capacity for a new connection" until, oh I don't know, maybe 2035. And it could affect all new housing projects with 25 or more units.

This is a pretty wild piece of news. And it certainly won't be good for overall housing supply. The three west London boroughs that are being impacted by this capacity issue were responsible for about 5,000 new homes between 2019-2020. That's about 11% of London's total housing supply.

So what and who is to blame for this? The Greater London Authority is saying that data centers are at least partially responsible. Too many new data centers in the area with high electrical loads.

I don't know exactly what is going on here (maybe some of you do), but now feels like a good time to turn our attention to solar power. I recently visited a large 3,000 panel rooftop installation here in the Greater Toronto Area, and so naturally there is a blog post in the works. Stay tuned.

One of the main criticisms of cryptocurrencies is that they consume a lot of energy and are therefore not sustainable. But all blockchains are not created equal and there are different ways in which transactions on a blockchain can be validated.

Bitcoin and Ethereum use something known as "proof of work" (though Ethereum plans to change this sometime next year). This method of validation does indeed use quite a bit of energy.

But another way to validate and maintain security on a network is through something known as "proof of stake." This is what Solana and many other blockchains are now using. Put differently, there's no "mining" required, which is the work that is so energy intensive.

To demonstrate the difference, the Solana Foundation recently published this comparison chart:

To try and further put this into context, the entire Solana network is currently doing about 20 million transactions per year. Right now, they are claiming that this is equivalent to the electricity usage of about 986 American households.

If you'd like to take a look at the footnotes, click here.