Investors tracking the ng share price (LSE: NG.) have had a lot to digest recently. Hovering around 1,280p on the London Stock Exchange—and its American Depositary Receipts (NYSE: NGG) trading near $85—National Grid plc finds itself at a critical structural crossroads. Under the leadership of Chief Executive Zoë Yujnovich, the utility giant is rapidly transitioning from a defensive, slow-and-steady dividend play into an aggressive, green-transition powerhouse. This guide breaks down the driving forces behind the latest movements in the NG share price, evaluates its high-profile capital expenditure plans, and helps you determine whether this stock belongs in your long-term portfolio.

The May 2026 Catalyst: Decoding National Grid's Full-Year Results

In mid-May 2026, National Grid plc released its highly anticipated full-year financial results for the fiscal period ending March 31, 2026. For investors monitoring the ng share price, this report served as a critical health check. It revealed a business performing strongly on an operational level, yet facing the complex financial realities of high-intensity capital reinvestment.

The Headline Numbers at a Glance

National Grid's financial metrics for the year showed solid progress across key areas. Here is how the performance stacked up against the previous fiscal year:

(Source: National Grid plc Investor Relations FY25/26 Results Presentation)

Why Did the Stock Drop Post-Earnings?

Despite an 8% growth in underlying EPS at constant currency and a robust operational performance, the immediate market reaction was cautious. The ng share price experienced a sharp post-earnings drop of over 7%.

This drop highlights a classic psychological disconnect in the stock market. Retail and institutional income investors traditionally buy utility stocks like National Grid as "bond proxies"—safe, predictable businesses with low volatility and high cash payouts. However, seeing capital expenditure surge past £11.6 billion and net debt climb to £44.2 billion spooked conservative investors who fear the balance sheet is being stretched too thin.

Yet, for forward-looking growth and infrastructure investors, this massive spending represents the foundation of a highly lucrative, multi-decade expansion of regulated assets.

The £70 Billion Green Upgrade: Capital Expenditure vs. Mounting Debt

At the core of the ng share price investment thesis is the sheer scale of the green energy transition. National Grid has formally committed to its largest investment program in company history: spending at least £70 billion over the five-year period from 2025/26 to 2029/30. This is a massive upgrade from the £60 billion capital plan announced in 2024.

What is "The Great Grid Upgrade"?

National Grid operates as a regulated monopoly, owning and running the high-voltage electricity transmission network in England and Wales, alongside gas and electricity distribution networks in the UK and the US Northeast.

The £70 billion mega-project—dubbed "The Great Grid Upgrade"—is aimed at doing three things:

1. Grid Electrification & Green Integration: Connecting massive new offshore wind developments in the North Sea and onshore solar arrays to the national power grid.
2. Alleviating Curtailment Constraints: National Grid is actively addressing billions of pounds in "curtailment" costs—payments made to wind and solar generators to turn off when the grid is overloaded. Expanding transmission lines ensures this cheap, green energy actually reaches homes and businesses.
3. Fulfilling Surging Tech Demand: The exponential rise of artificial intelligence, high-performance computing, and localized data centers requires a massive doubling of localized power grid transmission capacity.

The Debt Dilemma and RIIO-T3 Price Controls

While building miles of new cables and sub-stations guarantees long-term asset growth, it must be funded today. Capital expenditure rose over 20% in the last year alone, driving net debt up to £44.2 billion. In a "high-for-longer" interest rate environment, servicing this level of debt is expensive.

To balance this, National Grid relies on the regulatory framework. In the UK, the Office of Gas and Electricity Markets (Ofgem) regulates returns via the RIIO-T3 price control framework. This framework allows National Grid to earn a guaranteed, inflation-linked return on its Regulated Asset Base (RAB). As National Grid pours billions into upgrading the network, its asset base grows, unlocking higher permitted revenues in future years.

Management expects this dynamic to drive a compound annual asset growth rate of 10% and an underlying EPS growth rate of 8% to 10% through 2030.

The Dividend Dilemma: Is a 3.7% Yield Still Worth It?

For decades, National Grid has been a cornerstone of UK income portfolios, trusted for its reliable dividend that historically grew in line with inflation.

For the full year ending March 31, 2026, National Grid recommended a final dividend of 32.14p per share. Combined with the interim dividend of 16.35p paid in January 2026, the total dividend for the year is 48.49p, representing a 3.8% year-on-year increase that directly matches the UK CPIH inflation rate.

Key Dates for Dividend Hunters

If you want to capture the upcoming 32.14p payout, you must pay attention to the official schedule:

• Ex-Dividend Date: May 28, 2026
• Record Date: May 29, 2026
• Payment Date: July 23, 2026

Note for Investors: If you purchase shares on or after May 28, 2026, you will not receive this final dividend payout. Consequently, expect the ng share price to experience a technical downward adjustment of approximately 32.14p on the morning of May 28th, reflecting the cash leaving the company’s books.

Yield Compression: The New Normal

Historically, National Grid shares traded at a valuation that yielded 5% to 6%. At a share price of roughly 1,280p, the trailing dividend yield now sits at roughly 3.78%.

This yield compression is a direct result of the company's changing identity. National Grid is no longer a slow, stagnant cash cow. Because it is retaining more cash to fund its capital programs—maintaining a payout ratio of roughly 74%—the dividend yield is hovering near five-year lows. While income purists might look elsewhere for yield, the trade-off is a much higher potential for long-term capital appreciation as the company’s underlying asset base expands.

From the £7B Rights Issue to Today: Shareholder Dilution and Recovery

To fully understand where the ng share price is trading today, we must look back to May 2024.

At that time, National Grid shocked the London Stock Exchange by launching a highly dilutive, fully underwritten £7 billion rights issue. Offered at a steep discount of 645p per share on a 7-for-24 basis, the move was designed to rapidly repair the balance sheet and establish an equity buffer to support their then-£60 billion capital plan.

The Impact of Dilution

When a company suddenly issues over 1 billion new ordinary shares, the earnings and dividends are instantly spread thinner, reducing the value of existing shares in the near term.

Following the 2024 announcement, the ng share price plummeted from over 1,150p to below 850p. However, look at the recovery since then:

• 2024 Dip: ~850p
• Mid-2025 Recovery: ~1,100p
• May 2026 Level: ~1,280p

This steady upward trajectory demonstrates that while rights issues dilute and disappoint short-term traders, long-term investors who supported the capital raise at 645p have been richly rewarded with substantial capital gains. The balance sheet repair worked, and the capital generated has successfully driven regulated asset growth.

National Grid Share Price Forecast: Valuation and Outlook

When evaluating the ng share price from a valuation standpoint, we must weigh its growth targets against current pricing.

Currently, National Grid trades at a Price-to-Earnings (P/E) ratio of approximately 16.4x (based on underlying EPS of 78.0p and a share price of 1,280p). Depending on statutory GAAP adjustments and amortization, some analysts put the forward P/E ratio closer to 19.6x. This sits at a noticeable premium compared to the broader FTSE 100 average, which typically hovers around 11x to 13x.

So, is National Grid overpriced, or does it deserve this premium?

The Bull Case

• Inflation-Linked Moat: In an inflationary world, National Grid's regulated assets are explicitly indexed to inflation, protecting real-world earnings.
• Guaranteed Returns on Green Spending: Governments have legally binding net-zero targets. The £70 billion transition program is not optional; it is a structural necessity. This provides National Grid with guaranteed, regulatory-approved cash flows for decades to come.
• Strong EPS Growth: A utility company projecting compound annual EPS growth of 8% to 10% is rare. If management hits these targets, the P/E ratio will rapidly compress, driving the share price higher.

The Bear Case

• Massive Execution Risk: Executing a £70 billion mega-project across two continents (UK and US Northeast) leaves the company exposed to supply chain bottlenecks, rising copper and transformer costs, and right-of-way planning delays.
• Rising Interest Rates: If macroeconomic interest rates remain high, servicing £44.2 billion in net debt will eat into profits, potentially leading to future capital raises or a freeze on dividend growth.
• Political and Regulatory Changes: Any negative shift in regulatory allowed returns under future Ofgem price controls could drastically alter the cash-flow trajectory.

Frequently Asked Questions (FAQ)

Why did the National Grid share price drop in May 2026?

Despite reporting strong FY25/26 underlying earnings growth of 8%, the stock fell because investors reacted cautiously to the massive scale of the new £70 billion capital investment program and the increase of net debt to £44.2 billion.

When is the next ex-dividend date for LSE: NG.?

The next ex-dividend date for National Grid shares is May 28, 2026. To receive the final dividend of 32.14p per share, you must own the stock before this date. The dividend is scheduled to be paid out on July 23, 2026.

How does the LSE ticker NG. compare to the NYSE ticker NGG?

LSE: NG. represents the standard ordinary shares traded in British pence (GBX) on the London Stock Exchange. NYSE: NGG represents American Depositary Receipts (ADRs) traded in US Dollars on the New York Stock Exchange. Five ordinary LSE shares make up one NYSE ADR, meaning the ADR price is higher and reflects transatlantic currency movements.

Is National Grid still considered a defensive stock?

National Grid is shifting from a pure defensive utility to an infrastructure growth stock. While its monopoly position and regulated revenues provide defensive characteristics, its £70 billion capital spending plan and elevated debt levels introduce higher volatility and execution risk than in the past.

Conclusion: The Long-Term Verdict

For income-seeking investors, the ng share price represents a transitional phase. If your goal is strictly maximizing immediate cash yield, National Grid’s current 3.78% yield may feel underwhelming compared to historical averages or cash-equivalent yields.

However, if you are looking for structural, long-term wealth compounders, National Grid’s pivot is highly compelling. By aggressively investing £70 billion into the backbone of the UK and US green transition, the company is building an unmatched monopoly asset base that is virtually guaranteed to generate growing, inflation-linked revenues for decades.

With a target compound asset growth rate of 10% and EPS growth up to 10% through 2030, any near-term pullbacks in the share price represent a highly attractive entry point for patient, long-term investors.