Is it worth me buying National Grid shares at just under £11?

National Grid shares are close to their post-rights issue high, but there could still be value remaining in the stock. I investigated whether this is the case.

| 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.

National Grid engineers at a substation

Image source: National Grid plc

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.

National Grid (LSE: NG) shares have dipped 3% from their 23 April post-rights issue high of £11.03. This seven-for-24 exchange occurred on 10 June last year and secured £7bn in new funding.

That said, the stock is still 22% higher than the £8.75 low it hit since that event.

So, does the dip represent a pullback closer to the stock’s fair value? Or does it mean a better opportunity to buy an already undervalued stock at an even cheaper price?

I took a deep dive into the business and ran the key numbers to find out.

The business

The firm’s 15 May full fiscal-year 2024/25 results revealed that operating profit increased 10% year on year to £4.934bn. Profit before tax jumped 20% to £3.65bn, while earnings per share (EPS) increased 8% to 60p.

Meanwhile, record capital investment of around £10bn was made – an increase of 20% on the previous year. This was in line with the firm’s government-mandated plans to invest around £60bn in power infrastructure over five years.

These investment plans are a significant risk, in my view. On the one hand, they could be fully- or partly-funded through further rights issues, but this risks shareholder value dilution.

On the other, they could just add to the firm’s substantial debt burden. More specifically, it has a net debt-to-equity ratio of 5.9 compared to the 3 or less considered healthy.

That said, analysts forecast its earnings will increase 11.1% a year to the end of fiscal-year 2027/28. This is the key driver for any firm’s share price (and dividends) over the long run.

How does the share valuation look?

On the key price-to-sales ratio, National Grid’s 2.8 figure is very overvalued against its competitors’ average of 1.1. These comprise E.ON at 0.5, Engie at 0.6, Enel at 1, and Iberdrola at 2.3.

It also looks very overvalued at a price-to-earnings ratio of 18.2 compared to the 13.7 average of its peer group.

However, on the price-to-book ratio it looks undervalued at 1.4 against its competitors’ average of 2.

I ran a discounted cash flow analysis using other analysts’ figures and my own to get to the bottom of the valuation. This highlights where any firm’s share price should be, based on cash flow forecasts for the underlying business.

In National Grid’s case, the analysis shows the shares are 5% undervalued – almost the same as the dip. Therefore, the ‘fair value’ for the stock is £11.26.

So will I buy?

I have mainly focused on shares with a 7%+ dividend yield since I turned 50. However, I do occasionally buy growth stocks geared to share price gains.

That said, my minimum requirement for these is that they must be at least 30% underpriced to their fair value.

One reason for this is that anything less could be largely wiped out in volatile markets. The other is that there are plenty of other FTSE 100 and FTSE 250 stocks that are at least as undervalued as this.

Consequently, I will not be buying National Grid as a growth stock prospect. And with its 4.5% yield, I will not be buying it as a dividend stock either.

Simon Watkins has no position in any of the shares mentioned. The Motley Fool UK has recommended National Grid Plc. 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

British bank notes and coins
Investing Articles

Here’s a £30-a-week plan to generate passive income!

Putting a passive income plan into action need not take a large amount of resources. Christopher Ruane explains how it…

Read more »

Close-up of British bank notes
Investing Articles

Want a second income? Here’s how a spare £3k today could earn £3k annually in years to come!

How big can a second income built around a portfolio of dividend shares potentially be? Christopher Ruane explains some of…

Read more »

Close-up of British bank notes
Investing Articles

£20,000 for a Stocks and Shares ISA? Here’s how to try and turn it into a monthly passive income of £493

Hundreds of pounds in passive income a month from a £20k Stocks and Shares ISA? Here's how that might work…

Read more »

Snowing on Jubilee Gardens in London at dusk
Investing Articles

£5,000 put into Nvidia stock last Christmas is already worth this much!

A year ago, Nvidia stock was already riding high -- but it's gained value since. Our writer explores why and…

Read more »

Investing Articles

Are Tesco shares easy money heading into 2026?

The supermarket industry is known for low margins and intense competition. But analysts are bullish on Tesco shares – and…

Read more »

Smiling black woman showing e-ticket on smartphone to white male attendant at airport
Investing Articles

Can this airline stock beat the FTSE 100 again in 2026?

After outperforming the FTSE 100 in 2025, International Consolidated Airlines Group has a promising plan to make its business more…

Read more »

Investing Articles

1 Stocks and Shares ISA mistake that will make me a better investor in 2026

All investors make mistakes. The best ones learn from them. That’s Stephen Wright’s plan to maximise returns from his Stocks…

Read more »

Portrait Of Senior Couple Climbing Hill On Hike Through Countryside In Lake District UK Together
Investing Articles

I asked ChatGPT if £20,000 would work harder in an ISA or SIPP in 2026 and it said…

Investors have two tax-efficient ways to build wealth, either in a Stocks and Shares ISA or SIPP. Harvey Jones asked…

Read more »