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ValueScreener company report

National Grid plc (NGG)

NYSE / Utilities / Regulated Electric

Share price

79.07 USD Market dataClose of Oct 15, 2026

Market capitalisation

79.50B USD Market dataClose of Oct 15, 2026
Market data
Oct 15, 2026
Filed accounts
FY2025, filed May 29, 2025
Ratios computed
Oct 14, 2026
Filed years
9, FY2017 to FY2025
Four kinds of sourceSEC filingCompany statementMarket dataComputedWhat each means
SEC filingFiled with the SEC
Read from a statement the company filed with the SEC, with the form, fiscal year, filing date and accession beside it.
Company statementCompany statement
What the company says about itself in a filing: an 8-K item, the auditor, its own segment names.
Market dataMarket data
Prices, market value and what analysts publish, with the date they are as of.
ComputedComputed by ValueScreener
Worked out by us from the other three, with the inputs and the formula one press away. A score is a research output, not a rating or a recommendation.
Reading

1 of 10

Overview

What the business is, what it costs, and how it reads on four questions.

Market dataSEC filingComputed

Four questions, at a glance

Quality

Return on invested capital, after tax

4.5% Computed

From the FY2025 filing

Read quality

Valuation

Price to earnings

20.60x Computed

FY2025 accounts, priced at the latest close

Read valuation

Cash generation

Free cash flow yield

-3.3% Computed

FY2025 accounts, priced at the latest close

Read cash generation

Revenue and net income, by fiscal year

FY2016 Revenue: 13.21B GBPFY2016 Net income: 2.59B GBPFY2017 Revenue: 15.04B GBPFY2017 Net income: 7.79B GBPFY2018 Revenue: 15.25B GBPFY2018 Net income: 3.55B GBPFY2019 Revenue: 14.93B GBPFY2019 Net income: 1.51B GBPFY2020 Revenue: 13.36B GBPFY2020 Net income: 1.26B GBPFY2021 Revenue: 13.66B GBPFY2021 Net income: 1.64B GBPFY2022 Revenue: 18.45B GBPFY2022 Net income: 2.35B GBPFY2023 Revenue: 21.66B GBPFY2023 Net income: 7.80B GBPFY2024 Revenue: 19.85B GBPFY2024 Net income: 2.29B GBPFY2025 Revenue: 18.38B GBPFY2025 Net income: 2.90B GBP
Revenue Net income10 fiscal years; a year whose statement names no SEC filing is market data, and the table in Filings says which.
Named tests met
0 of 30 Which tests
The business, and the score behind its five axes

The reading, in brief

Is it cheap

Price to earnings is 20.60x at the close of 2026-10-15 on FY2025 figures; the lines are 15.00x (Graham's defensive ceiling) and, by market convention, 10.00x, 25.00x and 40.00x, and this sits between 15.00x and 25.00x.

Today, against the Regulated Electric industry (36 companies), 20.60x sits at the 57th percentile; the middle half of that group runs from 18.21x to 22.76x.

Is it good

Return on invested capital was 4.5% in FY2025, in the band labelled "Likely below the cost of capital" (below 8.0%), on lines anchored on Damodaran's cost-of-capital data, suggesting returns below the usual cost of the capital employed.

Today, against the Utilities sector (53 companies), 4.5% sits at the 24th percentile; the middle half of that group runs from 4.5% to 6.1%.

Is it safe

Interest coverage was 2.73x in FY2025, in the band labelled "Speculative grade" (1.50x to 3.00x), on lines anchored on Damodaran's interest-coverage table.

Year by year against peers
Whether National Grid plc's return on invested capital stayed above the median of the Utilities sector, year by year. (FY2019 to FY2025, 7 fiscal years of National Grid plc with a comparable figure)
The direction
Which way National Grid plc's return on equity has moved, and how steadily. (FY2016 to FY2025, 10 filed years of National Grid plc)
What could explain it
What in National Grid plc's filed statements could explain the movements. (5 readings drawn from the statement lines National Grid plc filed)
What to check next
What to check next on National Grid plc, and where in its filings. (8 questions for National Grid plc)
In one paragraph
One paragraph on National Grid plc's returns, cash, balance sheet and price. (14 of sixteen figures read for National Grid plc)

These are NGG’s filed figures. The research desk says what they mean, against peers and its own years, with what to check next.

Research NGGPart of Serious. New accounts start with 30 days of Professional, free, no card.

2 of 10

What changed

The newest filing, what it moved, and when the next one is due.

SEC filingCompany statement

The newest accounts on file are the FY2025 annual report: 20-F, filed May 29, 2025, accession 0001004315-25-000012.

3 of 10

Quality

The returns the business earns on its capital, and the margins behind them.

SEC filingComputed

National Grid plc: returns on capital and margins, each with its source
FigureValue, source and document
Return on invested capital, after tax4.5% ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Return on equity7.7% ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Return on capital employed, pre-tax5.1% ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Return on assets2.7% ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Gross margin
Why n/a

Our archived statements for this filer carry no gross profit line, so there is nothing to compute a gross margin from and trace back to source. That may be because the filer presents no cost of revenue, or because we have not captured the concept. We do not guess which.

n/a ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Operating margin26.9% ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Net margin15.8% ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
NGG 15.8%
ED 12.0%PEG 17.4%D 18.2%ETR 13.7%EXC 11.4%
11.4%18.2%
Net margin: NGG against the 5 companies named under Valuation context, each as filed for its own latest year. Placement only: no average is drawn.

4 of 10

Financial strength

What it owes against what it owns, and whether it can meet what falls due.

SEC filingComputedCompany statement

National Grid plc: leverage, liquidity and distress, each with its source
FigureValue, source and document
Debt to equity1.28 ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Current ratio1.35 ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Quick ratio1.30 ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Interest coverage2.73x ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Altman Z-score1.41 ComputedClose of Oct 15, 2026 · FY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Net debt47.19B ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Total assets 106.74BTotal liabilities 68.92BShareholders' equity 37.80BOwnsOwes, and equity
Total assets Total liabilities Shareholders’ equity
The balance sheet, line by line

Financial health

What National Grid plc owned and owed at the end of fiscal 2025, from the balance sheet it filed (20-F, filed May 29, 2025, 0001004315-25-000012).

National Grid plc: balance sheet position
Total assets106.74B FiledFY2025 20-F, filed May 29, 2025
Total liabilities68.92B FiledFY2025 20-F, filed May 29, 2025
Shareholders' equity37.80B FiledFY2025 20-F, filed May 29, 2025
Cash1.18B FiledFY2025 20-F, filed May 29, 2025
Total debt48.37B FiledFY2025 20-F, filed May 29, 2025
Net debt47.19B
Current ratio1.35
Debt to equity1.28

Read from the filed balance sheet for each year, with the income statement of the same year supplying operating profit where a ratio needs it. Nothing here is a view on whether this company is sound.

5 of 10

Valuation context

What the market charges for it, against its own record and companies like it.

Market dataSEC filingComputed

National Grid plc: what the market charges, each with its source
FigureValue, source and document
Price to earnings20.60x ComputedClose of Oct 15, 2026 · FY2025 20-F, filed May 29, 2025, 0001004315-25-000012
P/E on trailing twelve months
Why n/a

A trailing figure needs 4 filed quarters with the dates they were filed on, and we hold 0 for this company. Nothing is drawn rather than a line built from fewer.

n/a ComputedClose of Oct 15, 2026 · Trailing four quarters, each as known on the day; the quarterly filings are listed under Filings
Price to book1.58x ComputedClose of Oct 15, 2026 · FY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Price to sales3.25x ComputedClose of Oct 15, 2026 · FY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Enterprise value to EBIT21.68x ComputedClose of Oct 15, 2026 · FY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Enterprise value to EBITDA15.05x ComputedClose of Oct 15, 2026 · FY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Price to earnings over growth
Why n/a

We do not hold this figure for this company, so there is nothing to show.

n/a ComputedClose of Oct 15, 2026 · FY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Diluted earnings per share
Why n/a

The FY2025 filing carries no diluted earnings per share we could read.

n/a FiledFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Graham number
Why n/a

We do not hold this figure for this company, so there is nothing to show.

n/a ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012

We publish no fair value or price target of our own. Value NGG on your own assumptions in the DCF workbench, starting from the filed figures.

Its own record, and companies like it

Valuation

What the market charges for National Grid plc today, and the multiples it has carried. No value of ours: the figures are the filings’ and the market’s.

National Grid plc: valuation
Share price79.07 USD
Market capitalisation79.50B USD
Enterprise value to EBITDA15.05x
Graham numbern/a
Diluted earnings per share, FY2016n/a

Diluted earnings per share, FY2016: Filed before the 229-for-250 split on 22 May 2017, and the filing it was read from cannot be placed against it, so it is not put on today's share count and is not shown beside figures that are.

Price to earnings on trailing twelve months: A trailing figure needs 4 filed quarters with the dates they were filed on, and we hold 0 for this company. Nothing is drawn rather than a line built from fewer.

Companies like National Grid plc

  1. Consolidated Edison, Inc. (ED)Market cap 40.49B USD
  2. Public Service Enterprise Group Incorporated (PEG)Market cap 34.99B USD
  3. Dominion Energy, Inc. (D)Market cap 55.29B USD
  4. Entergy Corporation (ETR)Market cap 49.67B USD
  5. Exelon Corporation (EXC)Market cap 43.77B USD

Same industry (Regulated Electric) and size band (Large, 10B to 200B), nearest in market value, net margin and current ratio. Each of those counts equally, by how many of the companies considered sit between the two on it. Closest first: the order is likeness and nothing else.

6 of 10

Cash generation

Whether profit arrives as cash, and what is paid back to shareholders.

SEC filingComputed

National Grid plc: cash generation and what is paid out, each with its source
FigureValue, source and document
Free cash flow yield-3.3% ComputedClose of Oct 15, 2026 · FY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Free cash flow-1.97B GBP ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Free cash flow margin-10.7% ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Dividend yield
Why n/a

The newest cash flow statement on file ended more than fifteen months ago, so it says nothing about today's yield.

n/a ComputedClose of Oct 15, 2026 · FY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Payout ratio52.7% ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
FY2016 Free cash flow: 1.99B GBPFY2016 Net income: 2.59B GBPFY2017 Free cash flow: 1.02B GBPFY2017 Net income: 7.79B GBPFY2018 Free cash flow: 972.0M GBPFY2018 Net income: 3.55B GBPFY2019 Free cash flow: 754.0M GBPFY2019 Net income: 1.51B GBPFY2020 Free cash flow: -143.0M GBPFY2020 Net income: 1.26B GBPFY2021 Free cash flow: -333.0M GBPFY2021 Net income: 1.64B GBPFY2022 Free cash flow: 392.0M GBPFY2022 Net income: 2.35B GBPFY2023 Free cash flow: 18.0M GBPFY2023 Net income: 7.80B GBPFY2024 Free cash flow: 35.0M GBPFY2024 Net income: 2.29B GBPFY2025 Free cash flow: -1.97B GBPFY2025 Net income: 2.90B GBP
Free cash flow Net incomeProfit that arrives as cash stands level with net income; a gap year after year is worth reading about.

7 of 10

Filings

Every figure, the year it is for and the document it was read from.

SEC filingMarket data

The filed figures

Computed from the accounts this company filed with the SEC and, in a ratio with a price in it, the last close, dated on this page. Every filed figure below carries the fiscal year and the filing date its accounts were read from, and every blank carries the reason it is blank. Nothing here is a view on this company.

National Grid plc: the eight ratios, with the fiscal year and filing date behind each.
FigureValueYearAs of
20.60xFY2025Oct 15, 2026
1.58xFY2025Oct 15, 2026
21.68xFY2025Oct 15, 2026
-3.3%FY2025Oct 15, 2026
4.5%FY2025May 29, 2025
n/aFY2025Oct 15, 2026
n/a The newest cash flow statement on file ended more than fifteen months ago, so it says nothing about today's yield.
1.28FY2025May 29, 2025
1.35FY2025May 29, 2025
3.25xFY2025Oct 15, 2026
n/aFY2025Oct 15, 2026
n/a The filed income statement reports no earnings per share.
1.41FY2025Oct 15, 2026
-2.18FY2025May 29, 2025
6/9FY2025May 29, 2025

The figures are computed from the accounts for fiscal 2025, the newest full year on file. 9 filed fiscal years on record, FY2017 to FY2025, from SEC EDGAR. Prices as of Oct 15, 2026. Ratios recomputed Oct 14, 2026. Two facts, because a recompute is not a fresh quote.

The year and the filing date name the statement each figure’s accounts are read from, and they stand even where the figure itself could not be computed: the line beneath a blank says what that statement did not carry. A figure’s name opens its formula and the filings behind it; a statement that names no SEC filing has no filing date, and reads n/a.

Ten years of filed figures, year by year

Ten years of filed figures

10 fiscal years, FY2016 to FY2025. 9 read from the annual reports National Grid plc filed with the SEC, each naming its filing; the rest from statements that name none, which are market data. Amounts in GBP, as reported.

National Grid plc: revenue, earnings, free cash flow and returns, by fiscal year, with the filing each year was read from
YearRevenueOperating incomeNet incomeEPS, dilutedFree cash flowOperating marginReturn on equityFiling
FY202518.38B4.93B2.90Bn/a-1.97B26.9%7.7%20-F, May 29, 20250001004315-25-000012
FY202419.85B4.47B2.29Bn/a35.0M22.5%7.7%20-F, May 23, 20240001004315-24-000007
FY202321.66B4.88B7.80Bn/a18.0M22.5%26.4%20-F, Jun 6, 20230001004315-23-000012
FY202218.45B4.37B2.35Bn/a392.0M23.7%9.9%20-F, Jun 7, 20220001004315-22-000057
FY202113.66B2.40B1.64Bn/a-333.0M17.6%8.3%20-F, Jun 8, 20210001004315-21-000067
FY202013.36B2.28B1.26Bn/a-143.0M17.1%6.4%20-F, Jun 25, 20200001004315-20-000053
FY201914.93B2.87B1.51Bn/a754.0M19.2%7.7%20-F, Jun 4, 20190001004315-19-000071
FY201815.25B3.49B3.55Bn/a972.0M22.9%18.7%20-F, Jun 4, 20180001004315-18-000038
FY201715.04B3.21B7.79Bn/a1.02B21.3%38.3%20-F, Jun 4, 20180001004315-18-000038
FY201613.21B3.23B2.59Bn/a1.99B24.4%19.1%Market data, supplied Oct 15, 2026accession n/a
  • Revenue, compound annual growth FY2016 to FY2025: 3.7%
  • Earnings, compound annual growth FY2016 to FY2025: 1.3%
  • Earnings per share: Fewer than two filed years carry earnings per share.
  • Free cash flow: Free cash flow was not positive in both 2016 and 2025, so a compound rate across the window is not defined. Both figures are in the table.

Every figure in this section is a line of a filed annual statement or a ratio of two of them. Nothing here is estimated or smoothed. Earnings per share filed before a share split are put on today's share count, and say so. Nothing here is a verdict on the company.

8 of 10

Risks and guardrails

The accounting screens, the published tests, and the lines you can set to be told.

ComputedCompany statement

National Grid plc: accounting screens and published tests, each with its source
FigureValue, source and document
Beneish M-score-2.18 ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Piotroski F-score6/9 ComputedFY2025 20-F, filed May 29, 2025, 0001004315-25-000012
Named tests met0 of 30 Computed
Beta0.11 ComputedClose of Oct 15, 2026

The named tests

Of 30 tests value investors published: 0 met, 29 not met, 1 we could not complete. Counts, never a score: a single figure would have to decide that meeting one investor’s criteria and meeting another’s are worth the same.

Which tests, by name(all 30)
Meets
None of the named tests.
Does not
Defensive investor (Benjamin Graham); Deep value; Large cap, low P/E; Earnings yield and ROIC (Joel Greenblatt); High F-score, low P/B (Joseph Piotroski); Three forensic scores; Low PEG, low debt (Peter Lynch); High returns and growth; Gross margin, turnover (Robert Novy-Marx); EV/EBITDA and coverage; High yield, low payout; Dividends and buybacks; Low beta, profitable; ROIC at or above WACC; Near the 52-week low; Z-score and coverage (Edward Altman); Two thirds of NCAV (Benjamin Graham); High returns, low debt; Owner earnings yield; High return on tangibles; Low P/S, rising earnings (James O'Shaughnessy); Book or below, low debt (Walter Schloss); Cash-covered dividend; Tangible book or below; Cash-flow yield and ROIC; Clean books, high ROIC; Cheapest quarter on P/E (David Dreman); Cheapest quarter on P/B (David Dreman); Low P/E, growth, yield (John Neff)
Not measured
P/E times P/B (Benjamin Graham). A test with a figure we could not read is incomplete, never met and never failed.
Figures we could not read(10)
  • Current Ratio: Graham set this test for industrial companies; for utilities he tested debt against equity.
  • Positive Earnings Streak: The latest filed year has no per-share earnings we can read; the test needs 10.
  • Altman Z-Score: Altman fitted the Z-score on manufacturers; it is not measured for a utility.
  • PEG Ratio: We do not hold this figure for this company, so there is nothing to show.
  • Eps Growth 5Y: We do not hold this figure for this company, so there is nothing to show.
  • Gross Margin: Our archived statements for this filer carry no gross profit line, so there is nothing to compute a gross margin from and trace back to source. That may be because the filer presents no cost of revenue, or because we have not captured the concept. We do not guess which.
  • Dividend Yield: The newest cash flow statement on file ended more than fifteen months ago, so it says nothing about today's yield.
  • Share Count Change Yoy: We do not hold this figure for this company, so there is nothing to show.
  • Price To Graham: We do not hold this figure for this company, so there is nothing to show.
  • Dividend Streak: The stored figure is a zero that can stand for data we do not hold, so this test is not measured.

9 of 10

Declared positions

Whether anybody here owns this company.

Positions declared by the founder: no holding in any company shown here, as of October 3, 2026.

10 of 10

Next step

What to do with what you have read.

A thesis is your reason for owning it, in your words, with the figures that must stay true. Checking those figures every night against the newest filed accounts, and telling you once when one breaks, is what the subscription adds.

More on this company

What this cannot tell you

  • 10 figures could not be read on this company, among them Current Ratio, Positive Earnings Streak, Altman Z-Score. Each blank in the table above names the rest, with its reason. 1 named test comes back incomplete because of them, which is neither met nor missed.
  • We hold 9 filed fiscal years rather than 10, so the run above is shorter than a full decade and is counted as what it is.

And the one that is true of all of it: This is what the numbers say today. It cannot tell you the day one of them stops being true. Nothing here can, because the reasons are not written down.

Running this once is arithmetic on public documents and you are welcome to it. Writing down why you own each company, in your own words and with the numbers that have to stay true for it to hold, and then having those numbers re-checked every night against the newest filed accounts, and against the latest close where a rule watches a price, is Professional, the plan a new account starts on for 30 days, one trial per person. It writes to you the day one breaks, and stays quiet when nothing does. The check runs every night at 23:30 UTC. A filing is picked up the night after it is published.

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ValueScreener · valuescreener.ai · Computed from accounts filed with the SEC by this company, read from EDGAR, and from dated closing prices. On this page a filed figure opens into its formula, its inputs and the statement, fiscal year and filing date it was read from, and a price into the day of its close. A figure that cannot show that trail says so.

A computation on accounts filed with the SEC, not a recommendation and not advice. Past filings do not indicate future results. Risk disclaimer.

Once a week, what changed in the filings of US-listed companies, why it can matter to a thesis, and what deserves a closer review. Grounded in filings, not market noise.

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Risk disclaimer. This service is provided for research and education only. Nothing on it is investment advice, a recommendation, or an offer to buy or sell any security. Capital is at risk, and past performance does not indicate future results. Figures come from filed accounts and may be incomplete, delayed or later restated, so verify a number against the filing before you act on it.