TransAlta - Stock Price History | TAC

Historical daily share price chart and data for TransAlta since 2021 adjusted for splits. The latest closing stock price for TransAlta as of October 22, 2021 is 11.52.
  • The all-time high TransAlta stock closing price was 37.06 on July 21, 2008.
  • The TransAlta 52-week high stock price is 11.80, which is 2.4% above the current share price.
  • The TransAlta 52-week low stock price is 5.89, which is 48.9% below the current share price.
  • The average TransAlta stock price for the last 52 weeks is 9.12.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.
TransAlta Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2020 6.3675 7.0200 8.5000 3.8000 7.5900 6.01%
2019 6.3231 4.1800 7.4900 4.1800 7.1600 73.79%
2018 5.3824 5.9500 5.9500 4.1000 4.1200 -30.76%
2017 5.8607 5.5000 6.5500 5.1000 5.9500 8.18%
2016 4.6009 3.5000 5.7000 2.6000 5.5000 55.37%
2015 6.9951 9.1200 10.2500 3.0000 3.5400 -60.93%
2014 11.3154 12.6500 13.6400 8.4000 9.0600 -28.55%
2013 14.0952 15.5200 17.0100 12.3900 12.6800 -16.80%
2012 17.0173 21.1500 21.1500 14.2200 15.2400 -26.09%
2011 21.4415 21.4200 23.0400 19.6700 20.6200 -2.78%
2010 20.9172 22.5700 23.1400 18.5000 21.2100 -4.76%
2009 18.6097 20.6800 22.5600 14.0000 22.2700 11.29%
2008 29.8505 33.7400 37.0600 16.4700 20.0100 -40.23%
2007 26.9253 23.0600 36.7500 20.1000 33.4800 47.04%
2006 21.0704 22.9100 23.0200 18.8000 22.7700 4.31%
2005 17.4829 15.1100 22.6100 14.4000 21.8300 44.47%
2004 13.2250 14.4400 15.2900 11.6600 15.1100 6.26%
2003 12.8675 11.1700 14.5600 10.6100 14.2200 30.46%
2002 12.9226 13.4600 15.2700 10.8200 10.9000 -20.73%
2001 14.6089 16.0700 16.5400 13.1000 13.7500 0.00%
Sector Industry Market Cap Revenue
Utilities Utility - Electric Power Distribution $3.122B $1.568B
TransAlta is Canada's largest non-regulated electric generation and marketing company.
Stock Name Country Market Cap PE Ratio
NextEra Energy (NEE) United States $165.585B 33.37
Duke Energy (DUK) United States $79.842B 19.54
Southern (SO) United States $66.653B 17.93
Dominion Energy (D) United States $62.488B 20.67
National Grid Transco (NGG) United Kingdom $44.592B 0.00
Public Service Enterprise Group (PEG) United States $32.276B 17.78
Eversource Energy (ES) United States $29.725B 22.76
Pacific Gas & Electric (PCG) United States $29.310B 12.80
WEC Energy (WEC) United States $28.913B 22.47
Consolidated Edison Inc (ED) United States $26.889B 18.16
Edison (EIX) United States $22.953B 13.17
DTE Energy (DTE) United States $22.475B 14.25
PPL (PPL) United States $22.419B 17.76
Ameren (AEE) United States $21.930B 23.43
Fortis (FTS) Canada $21.058B 21.62
Entergy (ETR) United States $21.022B 17.55
FirstEnergy (FE) United States $20.543B 15.47
Avangrid (AGR) United States $20.286B 21.56
CMS Energy (CMS) United States $17.686B 19.76
Brookfield Infrastructure Partners LP (BIP) Bermuda $17.070B 43.14
AES (AES) United States $16.612B 16.73
CenterPoint Energy (CNP) United States $15.735B 16.80
Korea Electric Power (KEP) South Korea $12.518B 13.18
Brookfield Renewable Partners (BEP) Bermuda $10.426B 0.00
NRG Energy (NRG) United States $10.092B 16.30
Centrais El¿tricas Brasileiras SA (EBR) Brazil $9.947B 0.00
NiSource (NI) United States $9.830B 18.83
Eletrobras (EBR.B) Brazil $9.602B 0.00
Algonquin Power & Utilities (AQN) Canada $9.419B 21.32
Vistra (VST) United States $9.221B 0.00
Pinnacle West Capital (PNW) United States $7.557B 13.06
Huaneng Power (HNP) China $7.515B 0.00
OGE Energy (OGE) United States $6.850B 14.08
IDACORP (IDA) United States $5.302B 20.86
Hawaiian Electric Industries (HE) United States $4.546B 18.73
Comp En De Mn Cemig ADS (CIG) Brazil $4.380B 5.11
Portland General Electric (POR) United States $4.355B 16.80
PNM Resources (PNM) United States $4.265B 20.53
Black Hills (BKH) United States $4.211B 17.69
Enersis Chile S.A (ENIC) Chile $3.292B 0.00
Allete (ALE) United States $3.223B 19.27
Companhia Paranaense De Energia (COPEL) (ELP) Brazil $2.923B 1.25
Avista (AVA) United States $2.751B 18.72
Kenon Holdings (KEN) Singapore $2.203B 0.00
Pampa Energia S.A (PAM) Argentina $1.115B 4.77
Unitil (UTL) United States $0.678B 18.00
Empresa Distribuidora Y Comercializadora Norte S.A (Edenor) (EDN) Argentina $0.317B 0.00
Genie Energy (GNE) United States $0.152B 20.79