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A learning a day, since May 12 2008, by Rohan.
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China grid progress

2024-11-22 20:33:00

As an energy enthusiast who has been following the deployment of solar and wind energy over the past 7 years, there was always a big question – when will China ramp up installation?

Climate is influenced by global emissions. And there’s a limit to how much we’d be able to achieve if China didn’t take massive steps toward decarbonization.

The answer to that question, it seems, was over the past couple of years. Yale’s School of Environment had a fascinating in-depth article. A few salient notes:

In 2022, China installed roughly as much solar capacity as the rest of the world combined, then doubled additional solar in 2023.

Massive wind farms were already operating in northern China, and now a series of utility-scale clean energy bases involving many of China’s massive state-owned utility companies were planned for the relatively empty western desert regions. These bases, a combination of vast solar arrays and wind farms, are to be connected to markets in eastern China through high-speed transmission lines. The projects take advantage both of high solar radiation in the desert and large amounts of cheap, available land. China aims to build more than 200 such bases to help to raise its renewables capacity to about 3.9 terawatts by 2030, more than three times its 2022 total.

This chart tells the story.

Installation is one half of the battle. The next part is deployment and there are still challenges to be overcome.

Renewables now account for half of China’s installed capacity, but there has also been a surge in permits for new coal-fired power plants, and China still generates about 70 percent of its electricity from fossil fuels. This means actual renewable energy use is lagging behind installed capacity.

This is largely due to problems with China’s giant grid, which prefers high-speed transmission from reliable sources to the challenge of integrating variable renewable power and the associated challenge of matching intermittent supply to demand. For the grid companies, China’s coal-fired power plants are steady and predictable, and they are allowed many more hours of grid access than renewables. In addition, anxieties about energy security are now high on the policy agenda, reinforced by geopolitical tensions and recent droughts that affected hydropower output and resulted in power cuts. In China, energy security still means coal.

They’ve identified grid unification as the key lever here.

To use its renewables capacity efficiently however, China has recognized that power system reforms are long overdue. The National Development and Reform Commission recently announced plans to create a unified national power market by 2030, merging its six regional grids into one nationwide electricity market to better manage fluctuations in supply and demand. If that can be achieved, China could not only enhance its position as the global leader in installed capacity for renewable but might also make better use of the clean energy it produces.

The end outcome is inevitable – cheap renewable energy is going to win. The journey will be fascinating to watch.

Creating focus

2024-11-21 20:21:00

The most important lever a leader has to create focus is to simplify the priority list.

Strength and shadow

2024-11-20 20:11:00

Every strength or good trait has a dark side when overused.

There is no shadow without light, and vice versa.

Bouncebackability

2024-11-19 20:09:00

I wrote my first ever cover letter in my first semester of college. I remember acknowledging that, while I didn’t have too many skills, I did have bouncebackability.

The person who interviewed me asked whether that was a real word – I explained that it was made up. But it summed up what I knew I would do. I will fall – but you can count on me to bounce back.

I think that prediction definitely held true.

It remains a skill I look for to this day – in others and in myself. Falling is a given even with experience. Experience just reduces the frequency of falls.

The key is bouncebackability – regardless of the conditions.

Failure isn’t the falling down, it is the staying down.

Good Energy by Casey Means

2024-11-18 20:41:00

Casey Means’ book, at a high level, was all about 3 lessons:

(1) The conventional medical system is good at dealing with any acute issue that requires urgent attention. For anything chronic, it is useless.

(2) It is useless because it focuses on treating symptoms in silos rather than understanding the body as a whole. Dr Means makes the case that most chronic issues have the same underlying cause – metabolic dysfunction. When our metabolism works well, our cells are able to process all the energy we ingest and produce “Good Energy.” When it doesn’t, it leads to “Bad Energy” and this shows up with all sorts of chronic ailments and longer-term issues like diabetes.

(3) To clean up our act, we need to do 3 things.

First, we need to eat stuff that results in good energy. In simple terms, this means staying away from anything processed and eating a diverse collection of foods.

Second, it means respecting our biological clock. Sleeping well, respecting our circadian rhythms by getting enough sunlight and eating timely meals so our digestive system has time to do its work.

Third, it means doing things that modern lifestyles have taken away – movement, exposure to varying temperatures, and non-toxic living. Our bodies do better when they’re exposed to varying temperatures and, of course, the less toxins/more organic materials we use, the better.

While this is the high-level summary, I think Casey Means’ book excels in the detail. For all fellow fans of Peter Attia’s Outlive, I think this book is a great complement that outdoes Outlive in a few respects.

The single biggest takeaway from Outlive is the importance of exercise. Specifically, focusing on stability/mobility, then more time in Zone 2, then improving our grip strength, and growing our V02 Max by working out at high intensity. This takeaway alone has had a profound impact on my life.

Next, it emphasized the importance of protein and sleep. Those changed how I approached things too.

My only gripe with the book was that Peter Attia often recommended expensive scans and rushed to treatment (e.g., strong recommendations for statins) the moment he saw a symptom trending in the wrong direction.

Casey Means, on the other hand, takes an approach that feels closer to first principles. She focuses on lifestyle changes first. That resonated.

Since reading this book, I’ve been on a mission to “clean up my act.” Here are a few changes I’m working on:

(1) Sleep: I haven’t needed any convincing on the importance of sleep and generally sleep 7-8 hours daily, and longer on weekends. However, I still did a 6 hour day once every 2 weeks. I’ve been doing a better job at holding the line at 7 hours minimum.

(2) Movement: Casey Means did a good job explaining the importance of movement throughout the day. One small change has been targeting 7000 steps every day. I notice I don’t hit this when I’m working from home – so there’s more work to do here.

I’ve been more religious about the morning run once the sun rises to get light. And I’m working on adding 20 push ups every day.

(3) Nutrition: My morning protein shake used to have spinach and fruits. I incorporated seeds (Flax, hemp, chia) recently. I’ve added a scoop each of plant protein and whey as well.

I’ve become more disciplined about salad, nuts, and such during the day. And I’ve switched from white rice to (traditional) red rice and have reduced quantities over time. I’ve grown up as a rice eater – so this is a big change.

(4) Meal timing: The next big change is eating closer to 2 hours before bed. This is a no-brainer move – and way better than my previous average of 15 minutes. The other related change is going for a 15 minute walk after dinner most days to aid digestion.

(5) Next on the roadmap: I plan to go back to trying a CGM/continuous glucose monitor in the new year. I’d first tried one a few years ago and didn’t make the most of it. I know better now and I’m excited to try it and then follow it up with a few blood tests to see if these changes are taking effect.

(6) What I don’t intend to do: It is also worth calling out what I don’t intend to do. First on that list is cold water/ice baths. I’m all for naturally exposing my body to varying temperatures. But this feels like punishment I’d love to avoid unless absolutely necessary.

Second, Casey Means is a proponent of removing all grain/rice altogether from my diet. One idea I’ve applied as I’ve made changes is to ensure I’m ensuring there is a feeling of joy vs. punishment. I love rice. I’ve come to realize I can eat a lot less of it and I can also switch to low glycemic index/more nutritious varieties easily. I plan to do that.

One of the central tenets of this blog is “to learn and not to do is not to learn.” Outside of shaping my synthesis on diet and metabolism, the number of changes I’m working on is testament to how it has inspired a profound learning experience. It is among the most impactful I’ve ever read.

And for that, I’m grateful.