National Grid Transco - 15 Year Stock Price History | NGG

Historical daily share price chart and data for National Grid Transco since 2011 adjusted for splits and dividends. The latest closing stock price for National Grid Transco as of May 08, 2026 is 86.89.
  • The all-time high National Grid Transco stock closing price was 93.93 on February 25, 2026.
  • The National Grid Transco 52-week high stock price is 94.64, which is 8.9% above the current share price.
  • The National Grid Transco 52-week low stock price is 67.08, which is 22.8% below the current share price.
  • The average National Grid Transco stock price for the last 52 weeks is 77.88.
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National Grid Transco Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2026 86.5876 78.7000 93.9300 78.0800 86.8900 12.33%
2025 68.3619 57.0407 77.7700 53.7738 77.3500 35.88%
2024 58.5759 57.5102 66.4300 49.2593 56.9257 -1.26%
2023 53.5924 48.6601 59.7050 47.9160 57.6544 18.82%
2022 52.4866 55.5612 61.4776 37.3777 48.5234 -12.68%
2021 47.4384 43.5742 56.4294 40.7797 55.5688 29.02%
2020 41.7101 43.1666 47.6051 31.4020 43.0707 -0.75%
2019 36.5635 31.8277 43.5682 31.8277 43.3951 38.53%
2018 34.5792 36.3393 37.5042 30.5024 31.3250 -13.75%
2017 37.6634 34.4592 44.4473 33.9573 36.3208 4.23%
2016 39.8787 39.4055 43.7852 33.8498 34.8475 -12.33%
2015 37.9238 38.1285 40.7411 34.4214 39.7484 3.19%
2014 37.1663 32.5331 40.5653 32.0274 38.5210 16.63%
2013 29.0068 27.6816 33.0286 25.3984 33.0286 19.88%
2012 24.6754 22.2139 27.7392 21.3048 27.5521 25.67%
Sector Industry Market Cap Revenue
Oils/Energy Other Alternate Energy $89.772B $23.613B
NATIONAL GRID -ADR is an international energy delivery business, whose principal activities are in the regulated electricity and gas industries. They own and operate the high-voltage electricity transmission network in England and Wales, and Britain's natural gas transportation system. In the US they are one of the top ten electricity companies, with the largest electricity transmission and distribution network in the New England/New York region.
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