What are the best renewable energy stocks for 2021?

Hunting for the best renewable energy stocks for 2021 led me to the top holdings in a clean energy ETF and then to two UK stocks that I think fit the bill.

| More on:

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

potted green plant grows up in arrow shape

Image source: Getty Images

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

Taking a look at the holdings of the most popular clean energy ETFs is a good place for me to start my hunt for the best renewable energy stocks for 2021.

The top holding in the iShares II plc Global Clean Energy ETF  is Vestas Wind Systems, a Denmark-based manufacturer of wind power plants and wind turbines. Second is Orsted, another Denmark-based wind farm developer, which also does bioenergy and thermal power. Also in the top 10 holdings are the likes of US-based Xcel Energy and Nextera Energy and Enel, an Italian company. These three are power companies. They do have natural gas operations but also have sizeable renewable businesses.

All these companies are profitable. All, except Enel and Orsted, have grown their revenues over five years. However, buying foreign stocks in a Stocks and Shares ISA means extra forms to fill in, restricted dealing hours and foreign exchange transactions on buying, selling, or receiving dividends. Buying something like the iShares Global Clean Energy ETF or the Invesco Global Clean Energy ETF cuts out the fuss and would get me exposure to 80 or so clean energy stocks.

UK renewable energy stocks

But, I prefer picking UK-based stocks for my Stocks and Shares ISA. There are two that I am looking at closely as potential best of British renewable energy stocks for 2021. The first is SSE (LSE:SSE), an electricity generator, and the second is Ceres Power (LSE:CWR), a fuel cell company.

Almost two-thirds of SSE’s operating profits come from its renewable division. It has plans to treble its renewable power generation by 2030. That would be essential if millions of electric vehicles are tapping into the grid. I think once investors start to notice SSE is moving towards being the UK’s “pre-eminent green energy company”, its share price could soar.

However, transitions like this can be tricky to pull off. The company thinks £7.5bn worth of investment will be needed over the next five years. Furthermore, Ofgem is slashing the returns it allows companies like SSE to make between 2021 and 2016. That would make generating funds for investment harder and potentially affect the company’s ability to maintain its dividend. Perhaps SSE would have to seek alternative funding sources if Ofgem gets tough, potentially diluting existing shareholder returns.

Hydrogen stock

Ceres Power makes solid oxide fuel cells that generate power from natural gas and sustainable fuels like hydrogen, ethanol, and biogas. The company is also investing in reversing the process to make electrolysis cells that can produce hydrogen by splitting water. Revenue has grown from £1.11m to £31.68m over the five years to 2020, but the company is still making losses.

Ceres licences its technology to others to manufacture in return for royalties and milestone payments. Thus, Ceres runs an asset-light business model, which could be scaled up quickly without making large capital expenditures.

Shipping seems like a good application for hydrogen fuel. Ceres has licensed its tech for this use. But German engineering giant Bosch has also licensed it for land base use and owns around 18% of Ceres. Ceres is a speculative stock, but if hydrogen can grab a decent share of the future energy mix and Ceres can continue to find new licensing partners, this renewable energy stock could power up my portfolio. There is also the potential for a Bosh buyout.

James J. McCombie has no position in any of the shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Group of young friends toasting each other with beers in a pub
Investing Articles

FTSE 100 shares: has a once-a-decade chance to build wealth ended?

The FTSE 100 index has had a strong 2025. But that doesn't mean there might not still be some bargain…

Read more »

Passive income text with pin graph chart on business table
Investing Articles

I asked ChatGPT for its top passive income ideas for 2026 and it said…

Stephen Wright is looking for passive income ideas for 2026. But can asking artificial intelligence for insights offer anything valuable?

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

Here’s how a 10-share SIPP could combine both growth and income opportunities!

Juggling the prospects of growth and dividend income within one SIPP can take some effort. Our writer shares his thoughts…

Read more »

Tabletop model of a bear sat on desk in front of monitors showing stock charts
Investing Articles

The stock market might crash in 2026. Here’s why I’m not worried

When Michael Burry forecasts a crash, the stock market takes notice. But do long-term investors actually need to worry about…

Read more »

Person holding magnifying glass over important document, reading the small print
Investing Articles

Is this FTSE 250 retailer set for a dramatic recovery in 2026?

FTSE 250 retailer WH Smith is moving on from the accounting issues that have weighed on it in 2025. But…

Read more »

Young Black woman using a debit card at an ATM to withdraw money
Investing Articles

I’m racing to buy dirt cheap income stocks before it’s too late

Income stocks are set to have a terrific year in 2026 with multiple tailwinds supporting dividend growth. Here's what Zaven…

Read more »

ISA Individual Savings Account
Investing Articles

Aiming for a £1k passive income? Here’s how much you’d need in an ISA

Mark Hartley does the maths to calculate how much an investor would need in an ISA when aiming for a…

Read more »

Two business people sitting at cafe working on new project using laptop. Young businesswoman taking notes and businessman working on laptop computer.
Investing Articles

Is investing £5,000 enough to earn a £1,000 second income?

Want to start earning a second income in the stock market? Zaven Boyrazian breaks down how investors can aim to…

Read more »