Buffett's 4/10 Review: Too Much Clean Energy Hype, Not Enough Moat

Pull up a chair and let me open a Cherry Coke. I’ve been looking over your portfolio, and I have to say, it looks a bit like a Greenpeace wishlist crossed with a young fellow's brokerage account. You’ve got a grand vision for saving the planet, and I commend you for that. But as I’ve always told our Berkshire shareholders, our primary job isn’t to predict what the world will look like in thirty years; our job is to find wonderful businesses trading at fair prices today.

You've built a portfolio entirely around a single macroeconomic theme—the energy transition. Now, I know a thing or two about energy. Berkshire Hathaway Energy is one of the crown jewels of our company, generating massive amounts of wind and solar power. We love it because it produces steady, regulated, predictable cash flows. But looking at your holdings, I see a lot of folks paying steep prices for the promise of growth, rather than the certainty of earnings. Charlie Munger used to say that investing in something just because it’s a good cause without looking at the price tag is a good way to end up with neither money nor a cause. Let’s see what we’re really working with here.

Let’s look at your overall allocation. You've got over 62% of your money parked in Growth strategies and another 14% in pure Speculation. Charlie would have needed a stronger prescription of glasses to find the value in this setup! You are heavily exposed to Europe at nearly 32% and North America at 28%, but the real concentration is in the sectors: between Energy, Utilities, and broad market ETFs that are heavily skewed toward clean tech, you are entirely beholden to one industry.

There are businesses here I understand and admire. NextEra Energy at 11.4% and Iberdrola at 8.1% are fantastic utilities with massive scale advantages. They have real, durable competitive moats and throw off reliable cash. We actually own BYD (5.1%) at Berkshire—Charlie brought that to me years ago, and it's a magnificent operation.

But then I look at your cash reserves, sitting at a meager 3.9%. Cash is a depreciating asset, sure, but I always insist on keeping a loaded elephant gun ready for when Mr. Market gets depressed and puts wonderful businesses on sale. At less than 4% cash, you barely have a popgun. You’ve given yourself absolutely no dry powder to take advantage of market panics.

🚩 Paying Up for Hype: You've got over 10% in Tesla and a nearly 6% chunk in Enphase. These are innovative companies, but a wonderful business becomes a terrible investment if you pay too high a price for it. Where is your margin of safety? You are paying top dollar for future growth that may or may not materialize exactly as Wall Street hopes.

🚩 Thematic Diworsification: You are holding three different thematic ETFs—the clean energy ETF (ICLN), the solar ETF (TAN), and the lithium ETF (LIT)—totaling over 27% of your portfolio. Diversification is protection against ignorance. By buying these thematic baskets, you are paying management fees to hold a few good businesses alongside a whole lot of mediocre ones just because they fit a "green" label.

🚩 Macroeconomic Vulnerability: Clean energy infrastructure is incredibly capital intensive. When you build wind farms and solar arrays, you have to borrow a lot of money upfront. Because your entire portfolio is tied to this one sector, you are enormously vulnerable to high interest rates and changes in government subsidies. If the political winds shift, this portfolio catches a severe cold.

🚩 Running on Fumes: As I mentioned, that 3.9% cash allocation is a glaring blind spot. When you are fully invested in highly volatile, speculative growth stocks without a cash buffer, you turn yourself into a forced spectator during market crashes, rather than an eager buyer.

I'm going to give this portfolio a 4 out of 10. You've picked a growing industry and you own a few outstanding, cash-producing utilities, but you've thrown margin of safety out the window in favor of chasing hot trends.

Here is what I would suggest you do:

1. Build your cash reserves: Bring that cash pile up to at least 10% to 15%. Idle money earns nothing, but the option value of cash during a market panic is priceless. You need dry powder.

2. Trim the thematic ETFs: Stop buying the whole haystack. Identify the two or three best-in-class companies with durable competitive advantages and own them directly.

3. Seek out steady earners: Balance this heavy growth speculation with businesses that make money today, in any economic environment, regardless of who is sitting in Washington or Brussels. Think consumer staples, financials, or traditional industrials.

Remember, "Rule No. 1: Never lose money. Rule No. 2: Never forget Rule No. 1." Right now, you are risking a lot of capital on the hope that the future plays out exactly as everyone currently expects. That’s a dangerous game. Focus on value, build a moat around your capital, and let compounding do the heavy lifting over time.