National Grid Transco, PLC Nati (NGG) Stock Price & How to Invest

National Grid plc owns and operates regulated energy networks on both sides of the Atlantic. In the UK it runs the high-voltage electricity transmission system in England and Wales and, through National Grid Electricity Distribution (the former Western Power), the local power networks serving roughly 8 million customers in the Midlands, South West England and South Wales. In the US it owns Niagara Mohawk in upstate New York, the KEDNY and KEDLI gas utilities in Brooklyn, Queens and Long Island, and electric and gas utilities in Massachusetts, plus FERC-regulated transmission in New England. A smaller arm, National Grid Ventures, holds interconnectors to Europe and minority investments. The company has spent three years simplifying: it sold the electricity system operator to the UK government, a majority of its UK gas transmission business, National Grid Renewables and Grain LNG. The NYSE-listed NGG is an American Depositary Receipt, and one ADR represents five ordinary shares listed in London as NG.

For the year to March 2026, National Grid reported statutory revenue of ~£17.7 billion, underlying operating profit of ~£5.68 billion (up 9% at constant currency) and underlying EPS of 78.0p, up 8% at constant currency. Capital investment hit a record ~£11.6 billion, up 18%, driving group asset growth of 10.9%, and the full-year dividend rose 3.8% to 48.49p. Net debt ended the year at ~£44.2 billion. In an October 2026 pre-close update the company said it now expects to land slightly above its 13-15% EPS growth guidance for 2026/27, helped by ~£130 million of one-off gains in its venture portfolio. Half-year results are due 5 November 2026.

The investment picture is about visible, regulated growth rather than surprise. Management guides to at least £70 billion of capex from 2026/27 to 2030/31, ~10% annual asset growth and 8-10% annual underlying EPS growth from the 78.0p base, with roughly two-thirds of that spend already covered by regulatory settlements. In exchange, shareholders accept a dividend that grows only with UK CPIH inflation, a 2024 rights issue that diluted holders, rising leverage and constant negotiation with Ofgem and US state commissions. At ~$82 per ADR, NGG trades at roughly 15-16 times trailing underlying earnings with a ~4% yield.

Regulation is the core risk. Ofgem and US state commissions set allowed returns, and political pressure on household bills in both the UK and New York can squeeze outcomes, as the March 2026 FERC order cutting New England transmission returns showed. Pending decisions on Massachusetts Gas and the downstate New York gas utilities could disappoint. Funding is the second risk: net debt was ~£44.2 billion and FFO to net debt slipped to 13.0%, with regulatory gearing guided to rise from 61% toward the high 60s by 2030/31. The 2024 rights issue raised ~£7 billion and diluted holders, and the scrip dividend keeps adding shares. Higher interest rates raise financing costs and lower the value placed on long-dated utility cash flows. Delivery risk is real on a £70 billion program that depends on supply chains, planning consent and skilled labor. Operational incidents also matter: the March 2025 fire at a substation that shut Heathrow drew scrutiny, and US law firms have announced investor investigations, though no filed class action was found. Storms add costs. For US holders, sterling moves change the dollar value of earnings and dividends, and UK dividends are paid in pounds and converted.

5 analysts publish price targets on NGG, averaging $89.94 against a $81.77 price as of October 2026, or +10.0%. The published targets run from $71.00 to $98.00, a moderate spread, and the ratings split 3 buy, 1 hold, 1 sell. A price target is what an analyst published on a date, not a prediction, and sell-side ratings skew positive across the whole market.

Read the full NGG forecast and price target for the target table, the recent rating actions by firm, and how the consensus has shifted.

We give no verdict on National Grid Transco, PLC Nati. Both cases are real, which is why the question is contested at all, so here is the strongest version of each.

The case for buying. RIIO-T3 and the UK transmission build. The single largest driver is UK Electricity Transmission, where Ofgem's RIIO-T3 price control began in April 2026 and runs for five years. The most optimistic published target, $98.00, assumes this works close to its best case.

The case against. Regulation is the core risk. The most pessimistic target, $71.00, is roughly what NGG is worth if this bites instead.

Read the full bull and bear case on NGG, including what would have to change to break either one. Walnut is not an investment adviser.

A simple financial snapshot. These are approximations and refresh quarterly; for current figures see National Grid Transco, PLC Nati's investor relations page or your broker.

• ADR price (NGG): ~$82 (1 ADR = 5 ordinary shares)
• Market cap: ~$82 billion (~£61 billion)
• Revenue (FY to Mar 2026): ~£17.7 billion (~$23.6 billion)
• Underlying EPS (FY to Mar 2026): ~78.0p (~$5.20 per ADR)
• P/E (trailing underlying): ~15.7x (~14x on 2026/27 guidance)
• Dividend yield: ~4.0% (48.49p per share, ~$3.24 per ADR)

Utilities are usually valued on earnings, dividends and the premium paid over regulated asset value. National Grid's regulated assets plus other businesses totaled ~£72 billion at March 2026 against ~£44 billion of net debt, so the ~£61 billion equity value implies a premium to book asset value, consistent with investor confidence in growth. The trailing P/E of ~15.7x on underlying EPS falls toward ~14x if 2026/27 EPS grows 13-15% as guided. Statutory EPS was lower at 65.5p, putting the statutory P/E near ~19x. The ADR has traded between ~$73 and ~$95 over the past year.

Other names that sit close to NGG: same theme, named as a direct competitor, or held beside it in the same funds. Each entry says which. Worth a look if you are thinking about diversification within a thesis rather than concentration on one ticker.

There are three common ways to get NGG exposure. Buy shares (or fractional shares) directly at any major broker. Hold an ETF that includes it, which spreads the position across many companies. Or build it into a focused thematic portfolio, so NGG sits alongside other stocks that express the same thesis.

Walnut takes the portfolio route. Describe a thesis where NGG fits (for example “AI infrastructure” or “dividend-growth large-caps”) and the AI proposes 5 to 6 constituents with target weights. You review the plan and fund it through your own broker when you're ready.

New to this? Start with how to invest in stocks, see how to analyze a stock with AI, or compare the best AI stock analyzers.

NGG is a slow, regulated compounder: ~10% asset growth and 8-10% EPS growth guided to 2031, a ~4% dividend yield, and real exposure to regulators, interest rates, sterling and execution on a record build.

Whether NGG is worth buying today depends more on your time horizon and what you already hold than on any single call. We walk through valuation, what would have to go right, and the risks in is NGG a buy or a sell?, and where the stock could go from here in the NGG stock forecast.

For income investors, whether NGG pays a dividend and how the payout looks is covered in does NGG pay a dividend? And to weigh NGG against a peer, read the full side-by-side comparisons: NGG vs ES and NGG vs ED.