TLN (Talen Energy) Shiller PE Ratio: (As of Sep. 04, 2026)

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TLN Talen Energy Corp TLN
52 GF Score
Price $305.52
GF Value $524.31
Valuation Possible Value Trap
! 7 Warning Signs
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What is Talen Energy Shiller PE Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Talen Energy  (NAS:TLN) Shiller PE Ratio Explanation

Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.

Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.


Be Aware

Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.


Talen Energy Shiller PE Ratio Related Terms


Talen Energy Shiller PE Ratio Historical Data

* Premium members only.

The historical data trend for Talen Energy's Shiller PE 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.

Talen Energy Shiller PE Ratio Chart

Talen Energy Annual Data
Trend Dec11 Dec12 Dec13 Dec14 Dec15 Dec21 Dec22 Dec23 Dec24 Dec25
Shiller PE Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

Talen Energy Quarterly Data
Jun15 Sep15 Dec15 Mar16 Jun16 Sep16 Dec21 Dec22 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Shiller PE Ratio Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

TLN vs OKLO, NRG, KEN: Shiller PE Ratio Comparison

For the Utilities - Independent Power Producers subindustry, Talen Energy's Shiller PE Ratio, along with its competitors' market caps and Shiller PE 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.


Talen Energy Shiller PE Ratio vs Utilities - Independent Power Producers Industry

For the Utilities - Independent Power Producers industry and Utilities sector, Talen Energy's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Talen Energy's Shiller PE Ratio falls into.


TLN
52GF Score
Talen Energy Corp TLN
Shiller PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Talen Energy Shiller PE Ratio Calculation

For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

Talen Energy's E10 for the fiscal year that ended in Dec25 is calculated as:

For example, Talen Energy's adjusted earnings per share data for the fiscal year that ended in Dec25 was:

Adj_EPS=Earnings per Share (Diluted)/CPI of Dec25 (Change)*Current CPI (Dec25)
=-4.79/324.0540*324.0540
=-4.790

Current CPI (Dec25) = 324.0540.

Talen Energy Annual Data

Earnings per Share (Diluted) CPI Adj_EPS
201112 1,706.667 225.672 2,450.691
201212 1,053.333 229.601 1,486.652
201312 -2.750 233.049 -3.824
201412 4.910 234.812 6.776
201512 -3.100 236.525 -4.247
202112 -2,198.060 278.802 -2,554.824
202212 -2,864.444 296.797 -3,127.506
202312 0.000 306.746 0.000
202412 17.670 315.605 18.143
202512 -4.790 324.054 -4.790

Add all the adjusted EPS together and divide 10 will get our E10.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

Is Talen Energy (TLN) Overvalued in 2026?

Based on GuruFocus' analysis, Talen Energy stock appears to be undervalued. The current stock price of $305.52 is trading 41.7% below its estimated GF Value™ of $524.31. GuruFocus considers Talen Energy to be Possible Value Trap.

Key valuation signals for TLN:

  • Shiller PE Ratio:
  • GF Value™: $524.31 vs. price of $305.52 (41.7% below fair value)
  • GF Score™: 52/100 with 7 warning signs

No single metric tells the full story. See the TLN stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Talen Energy Business Description

Other Exchanges 1TLN:Italy
Address 2929 Allen Parkway, Suite 2200, Houston, TX, USA, 77019
Talen Energy Corp is an independent power producer and energy infrastructure company based in the United States. It owns and operates several gigawatts of power infrastructure in the United States, including 2.2GW of nuclear power and a dispatchable fossil fleet. The company produces and sells electricity, capacity, and ancillary services into wholesale U.S. power markets, with its generation fleet principally located in the Mid-Atlantic, Ohio, and Montana. Talen's operating segments are: PJM and Others. The PJM segment, which generates maximum revenue, is engaged in electricity generation, marketing activities, and commodity risk and fuel management within the PJM market and is comprised of Susquehanna and Talen's natural gas and coal generation facilities in PJM.
52GF Score

Get the complete analysis for TLN

Shiller PE Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$305.52
Price
$524.31
GF Value