National GridNGGTF +4.54%74 FCF Margin % is -15.70% as of Mar. 2026. GuruFocus rates NGGTF with a GF Score™ of 74/100 and a GF Value™ of $9.67 (Significantly Overvalued). The stock has 5 warning signs investors should review. Among 499 Utilities - Regulated companies, National Grid ranks worse than 82.57% on this metric.
FCF Margin % is calculated as Free Cash Flow divided by its Revenue. National Grid's Free Cash Flow for the
six
months ended in Mar. 2026 was $-2,224 Mil. National Grid's Revenue for the
six
months ended in Mar. 2026 was $14,163 Mil. Therefore, National Grid's FCF Margin % for the quarter that ended in Mar. 2026 was -15.70%.
The historical rank and industry rank for National Grid's FCF Margin % or its related term are showing as below:
NGGTF'
s FCF Margin % Range Over the Past 10 Years
Min: -15.53 Med: 0.14 Max: 11.37
Current: -15.52
During the past 13 years, the highest FCF Margin % of National Grid was 11.37%. The lowest was -15.53%. And the median was 0.14%.
NGGTF's FCF Margin % is ranked worse than 82.57% of 499
companies
in the Utilities - Regulated industry
Industry Median: 2.36
vs NGGTF: -15.52
National Grid FCF Margin % Related Terms
National Grid FCF Margin % Historical Data
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The historical data trend for National Grid's FCF Margin % can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Utilities - Regulated Electric subindustry, National Grid's FCF Margin %, along with its competitors' market caps and FCF Margin % data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
National Grid FCF Margin % vs Utilities - Regulated Industry
For the Utilities - Regulated industry and Utilities sector, National Grid's FCF Margin % distribution charts can be found below:
* The bar in red indicates where National Grid's FCF Margin % falls into.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
National Grid (NGGTF) has a FCF Margin % of -15.70% as of Mar. 2026. Free cash flow margin is the ratio of total free cash flow to net sales. View historical data on National Grid and its competitors. According to the industry distribution chart, National Grid ranks #412 out of 499 companies in the Utilities - Regulated industry, placing it in the top 82.6%.
Is National Grid's FCF Margin % too high?
National Grid's current FCF Margin % is -15.70%. Based on the distribution chart, National Grid ranks #412 out of 499 companies in the Utilities - Regulated industry, which is in the bottom quartile relative to peers. Overall, National Grid has a GF Score™ of 74/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does National Grid's FCF Margin % compare to NEE and SO?
According to the Utilities - Regulated industry distribution chart, National Grid ranks #412 out of 499 companies for FCF Margin %. This places National Grid in the lower half of its industry. The industry median FCF Margin % is 2.36. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good FCF Margin % for an Utilities - Regulated company?
The median FCF Margin % among Utilities - Regulated companies is 2.36, based on 499 companies in the industry. Companies in the top quartile (top 25%) have a FCF Margin % significantly above this median, while those in the bottom quartile fall well below. However, FCF Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high FCF Margin % mean?
A high FCF Margin % can signal that a stock is expensive relative to its fundamentals. Free cash flow margin is the ratio of total free cash flow to net sales. View historical data on National Grid and its competitors. For the Utilities - Regulated industry, the median FCF Margin % is 2.36 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. National Grid's current FCF Margin % is -15.70%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is National Grid stock overvalued right now?
Based on GuruFocus' analysis, National Grid (NGGTF) is currently considered Significantly Overvalued. The stock's GF Value™ is $9.67, compared to a current price of $16.56 — trading 71.2% above its estimated fair value. The current FCF Margin % is -15.70%. National Grid's overall GF Score™ is 74/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is FCF Margin % calculated?
FCF Margin % is calculated from a company's financial statements. For National Grid (NGGTF), the current FCF Margin % is -15.70% as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is National Grid (NGGTF) Overvalued in 2026?
Based on GuruFocus' analysis, National Grid stock appears to be overvalued.
The current stock price of $16.56 is trading 71.2% above its estimated GF Value™ of $9.67.
GuruFocus considers National Grid to be Significantly Overvalued.
Key valuation signals for NGGTF:
FCF Margin %: -15.70%
GF Value™: $9.67 vs. price of $16.56 (71.2% above fair value)
No single metric tells the full story. See the NGGTF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
National Grid owns and operates the electric transmission system in England and Wales. It sold the bulk of its UK gas transmission business in fiscal 2023 to fund the acquisition of PPL's UK power distribution assets. In the Northeastern United States, it serves electricity and gas customers combined in three states. It also owns regulated transmission electricity networks in the United States, metering services and merchant transmission lines in the UK.
74GF Score
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