TransAltaTAC 51 PB Ratio is 12.03 as of Jun. 24, 2026, which is 377% above its 10-year median of 2.52. GuruFocus rates TAC with a GF Score™ of 51/100 and a GF Value™ of $6.86 (Significantly Overvalued). The stock has 6 warning signs investors should review. Among 430 Utilities - Independent Power Producers companies, TransAlta ranks worse than 96.74% on this metric.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. As of today (2026-06-24), TransAlta's share price is $13.69. TransAlta's Book Value per Share for the quarter that ended in Mar. 2026 was $1.14. Hence, TransAlta's PB Ratio of today is 12.03.
Warning Sign:
TransAlta Corp stock PB Ratio (=12.49) is close to 3-year high of 12.58.
The historical rank and industry rank for TransAlta's PB Ratio or its related term are showing as below:
TAC'
s PB Ratio Range Over the Past 10 Years
Min: 0.62 Med: 2.52 Max: 20.72
Current: 12.56
During the past 13 years, TransAlta's highest PB Ratio was 20.72. The lowest was 0.62. And the median was 2.52.
During the past 12 months, TransAlta's average Book Value Per Share Growth Rate was -41.40% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was 35.00% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was -12.20% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was -19.40% per year.
During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of TransAlta was 35.00% per year. The lowest was -55.90% per year. And the median was -0.95% per year.
The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.
Be Aware
Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.
TransAlta PB Ratio Related Terms
TransAlta PB Ratio Historical Data
* Premium members only.
The historical data trend for TransAlta's PB Ratio 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 - Independent Power Producers subindustry, TransAlta's PB Ratio, along with its competitors' market caps and PB Ratio 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.
TransAlta PB Ratio vs Utilities - Independent Power Producers Industry
For the Utilities - Independent Power Producers industry and Utilities sector, TransAlta's PB Ratio distribution charts can be found below:
* The bar in red indicates where TransAlta's PB Ratio falls into.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.
TransAlta's PB Ratio for today is calculated as follows:
* 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.
It can also be calculated from the numbers for the whole company:
A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.
TransAlta (TAC) has a PB Ratio of 12.03 as of Jun. 24, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on TransAlta and its competitors. This is 377% above median its historical median of 2.52. Over the past decade, TransAlta's PB Ratio has ranged from 0.62 to 20.72. According to the industry distribution chart, TransAlta ranks #416 out of 430 companies in the Utilities - Independent Power Producers industry, placing it in the top 96.7%.
Is TransAlta's PB Ratio too high?
TransAlta's current PB Ratio of 12.03 is 377% above median its 10-year median of 2.52. Over the past 10 years, this metric has ranged from a low of 0.62 to a high of 20.72. The Utilities - Independent Power Producers industry median PB Ratio is 1.36. TransAlta's value of 12.03 is 784.6% above this industry median. Based on the distribution chart, TransAlta ranks #416 out of 430 companies in the Utilities - Independent Power Producers industry, which is in the bottom quartile relative to peers. Overall, TransAlta has a GF Score™ of 51/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does TransAlta's PB Ratio compare to CEG and VST?
According to the Utilities - Independent Power Producers industry distribution chart, TransAlta ranks #416 out of 430 companies for PB Ratio. This places TransAlta in the lower half of its industry. The industry median PB Ratio is 1.36. TransAlta's value of 12.03 is 784.6% above this benchmark. Historically, TransAlta's own PB Ratio has ranged from 0.62 to 20.72 over the past decade. While the company's 10-year median is 2.52 vs. the industry median of 1.36, TransAlta has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good PB Ratio for an Utilities - Independent Power Producers company?
The median PB Ratio among Utilities - Independent Power Producers companies is 1.36, based on 430 companies in the industry. Companies in the top quartile (top 25%) have a PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. TransAlta's current PB Ratio of 12.03 is 784.6% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high PB Ratio mean?
A high PB Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on TransAlta and its competitors. For the Utilities - Independent Power Producers industry, the median PB Ratio is 1.36 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. TransAlta's current PB Ratio is 12.03, which is 377% above median its own 10-year median of 2.52. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is TransAlta stock overvalued right now?
Based on GuruFocus' analysis, TransAlta (TAC) is currently considered Significantly Overvalued. The stock's GF Value™ is $6.86, compared to a current price of $13.69 — trading 99.6% above its estimated fair value. The current PB Ratio is 12.03, which is 377% above median its 10-year median of 2.52 and 784.6% above the Utilities - Independent Power Producers industry median of 1.36. TransAlta's overall GF Score™ is 51/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PB Ratio calculated?
PB Ratio is calculated from a company's financial statements. For TransAlta (TAC), the current PB Ratio is 12.03 as of Jun. 24, 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 TransAlta (TAC) Overvalued in 2026?
Based on GuruFocus' analysis, TransAlta stock appears to be overvalued.
The current stock price of $13.69 is trading 99.6% above its estimated GF Value™ of $6.86.
GuruFocus considers TransAlta to be Significantly Overvalued.
Key valuation signals for TAC:
PB Ratio: 12.03 (377% above median its 10-year median of 2.52)
GF Value™: $6.86 vs. price of $13.69 (99.6% above fair value)
Industry Position: 784.6% above the Utilities - Independent Power Producers median (#416 of 430)
No single metric tells the full story. See the TAC stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
TransAlta Corp is an independent power producer based in Alberta, Canada. The company operates a diverse electrical power generation assets in Canada, the United States, and Western Australia. The company has reportable segments namely, Hydro, Wind & Solar, Gas, Energy Transition segment and Corporate Segment. The company generates the majority of its revenue from the gas segment.
51GF Score
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