Market Cap

National Grid plc Market Capitalization:

£57.31 Billion

GBP as of Jan. 1, 2026

US$77.12 Billion

business National Grid plc Company Profile

National Grid plc Main Stock Listing

LSE: NG.

Market Capitalization History of National Grid plc

Market capitalizations are calculated from the opening stock price at the beginning of each month.

Top Competitors by Market Capitalization

Industry: Utilities—Diversified
Company Market Cap (USD)
Iberdrola, SA $146.18 B
Enel SpA $106.27 B
Engie SA $65.60 B
PacifiCorp $65.07 B
Sempra Energy $58.55 B
Sector: Utilities
Company Market Cap (USD)
NextEra Energy $168.55 B
Iberdrola, SA $146.18 B
Siemens Energy $123.41 B
Constellation Energy $114.42 B
Enel SpA $106.27 B

Yearly evolution of National Grid plc market cap

Date Market Cap YoY Change
Jan. 1, 2026 £57.31 B 21.61%
Jan. 1, 2025 £47.12 B 18.85%
Jan. 1, 2024 £39.65 B 5.42%
Jan. 1, 2023 £37.61 B -4.69%
Jan. 1, 2022 £39.46 B

Market capitalization is calculated from the opening stock price at the beginning of each year.

Company Description

National Grid PLC is a multinational electricity and gas utility company. It primarily operates in electricity transmission and gas distribution in the United Kingdom and the United States, managing operations directly or through subsidiary companies.

business National Grid plc Company Profile

National Grid plc Categories

United Kingdom languages Utilities languages Utilities—Diversified
United Kingdom Utilities United Kingdom Utilities—Diversified

Stocks & Indices

National Grid plc has the following listings and related stock indices.


Stock: LSE: NG.

Stock: BCBA: NGG

Stock: NYSE: NGG

Stock: FSX: NNGF

Stock: OTC: NGGTF

Stock: XETR: NNGF

Stock: FSX: NNGD

What is a company's market capitalization?

The market capitalization of a company, more simply referred to as "market cap", is the total market value of a publicly traded company's outstanding shares. It is often considered as a key indicator of what a company is worth.