Alliant EnergyFRA:AY1 +2.37%78 PEG Ratio is 5.17 as of Jul. 06, 2026, which is 9% below its 10-year median of 5.69. GuruFocus rates FRA:AY1 with a GF Score™ of 78/100 and a GF Value™ of €56.80 (Modestly Overvalued). The stock has 10 warning signs investors should review. Among 300 Utilities - Regulated companies, Alliant Energy ranks worse than 79.33% on this metric.
* The 5-Year EBITDA Growth Rate is the 5-year average EBITDA per share growth rate. While the denominator is a percentage, we use the whole number as opposed to the decimal form for the calculation. For example, 5% would be shown as 5 as opposed to 0.05. If it's smaller than or equal to 0, then the PEG Ratio is not calculated.
The historical rank and industry rank for Alliant Energy's PEG Ratio or its related term are showing as below:
FRA:AY1'
s PEG Ratio Range Over the Past 10 Years
Min: 2.49 Med: 5.69 Max: 15.3
Current: 5.14
During the past 13 years, Alliant Energy's highest PEG Ratio was 15.30. The lowest was 2.49. And the median was 5.69.
FRA:AY1's PEG Ratio is ranked worse than 79.33% of 300
companies
in the Utilities - Regulated industry
Industry Median: 1.71
vs FRA:AY1: 5.14
Peter Lynch thinks a company with a P/E ratio equal to its growth rate is fairly valued.
Alliant Energy (FRA:AY1) PEG Ratio Explanation
To compare stocks with different growth rates, Peter Lynch invented a ratio called PEG Ratio. PEG Ratio is defined as the P/E ratio divided by the growth ratio. He thinks a company with a P/E ratio equal to its growth rate is fairly valued. Still he said he would rather buy a company growing 20% a year with a P/E of 20, instead of a company growing 10% a year with a P/E of 10.
Alliant Energy PEG Ratio Related Terms
Alliant Energy PEG Ratio Historical Data
* Premium members only.
The historical data trend for Alliant Energy's PEG 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 - Regulated Electric subindustry, Alliant Energy's PEG Ratio, along with its competitors' market caps and PEG 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.
Alliant Energy PEG Ratio vs Utilities - Regulated Industry
For the Utilities - Regulated industry and Utilities sector, Alliant Energy's PEG Ratio distribution charts can be found below:
* The bar in red indicates where Alliant Energy's PEG Ratio falls into.
* 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.
* Note: The 5-Year EBITDA Growth Rate is the 5-year average EBITDA per share growth rate. While the denominator is a percentage, we use the whole number as opposed to the decimal form for the calculation. For example, 5% would be shown as 5 as opposed to 0.05. If it's smaller than or equal to 0, then the PEG Ratio is not calculated.
Alliant Energy (FRA:AY1) has a PEG Ratio of 5.17 as of Jul. 06, 2026. Price-earnings to growth ratio is the ratio of price-earnings to a company's earnings growth rate. View historical data on Alliant Energy and its competitors. This is near median its historical median of 5.69. Over the past decade, Alliant Energy's PEG Ratio has ranged from 2.49 to 15.30. According to the industry distribution chart, Alliant Energy ranks #238 out of 300 companies in the Utilities - Regulated industry, placing it in the top 79.3%.
Is Alliant Energy's PEG Ratio too high?
Alliant Energy's current PEG Ratio of 5.17 is near median its 10-year median of 5.69. Over the past 10 years, this metric has ranged from a low of 2.49 to a high of 15.30. The Utilities - Regulated industry median PEG Ratio is 1.71. Alliant Energy's value of 5.17 is 202.3% above this industry median. Based on the distribution chart, Alliant Energy ranks #238 out of 300 companies in the Utilities - Regulated industry, which is in the bottom quartile relative to peers. Overall, Alliant Energy has a GF Score™ of 78/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Alliant Energy's PEG Ratio compare to EVRG and CMS?
According to the Utilities - Regulated industry distribution chart, Alliant Energy ranks #238 out of 300 companies for PEG Ratio. This places Alliant Energy in the lower half of its industry. The industry median PEG Ratio is 1.71. Alliant Energy's value of 5.17 is 202.3% above this benchmark. Historically, Alliant Energy's own PEG Ratio has ranged from 2.49 to 15.30 over the past decade. While the company's 10-year median is 5.69 vs. the industry median of 1.71, Alliant Energy 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 PEG Ratio for an Utilities - Regulated company?
The median PEG Ratio among Utilities - Regulated companies is 1.71, based on 300 companies in the industry. Companies in the top quartile (top 25%) have a PEG Ratio significantly above this median, while those in the bottom quartile fall well below. However, PEG Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Alliant Energy's current PEG Ratio of 5.17 is 202.3% 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 PEG Ratio mean?
A high PEG Ratio can signal that a stock is expensive relative to its fundamentals. Price-earnings to growth ratio is the ratio of price-earnings to a company's earnings growth rate. View historical data on Alliant Energy and its competitors. For the Utilities - Regulated industry, the median PEG Ratio is 1.71 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Alliant Energy's current PEG Ratio is 5.17, which is near median its own 10-year median of 5.69. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Alliant Energy stock overvalued right now?
Based on GuruFocus' analysis, Alliant Energy (FRA:AY1) is currently considered Modestly Overvalued. The stock's GF Value™ is €56.80, compared to a current price of €67.48 — trading 18.8% above its estimated fair value. The current PEG Ratio is 5.17, which is near median its 10-year median of 5.69 and 202.3% above the Utilities - Regulated industry median of 1.71. Alliant Energy's overall GF Score™ is 78/100 with 10 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PEG Ratio calculated?
PEG Ratio is calculated from a company's financial statements. For Alliant Energy (FRA:AY1), the current PEG Ratio is 5.17 as of Jul. 06, 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 Alliant Energy (FRA:AY1) Overvalued in 2026?
Based on GuruFocus' analysis, Alliant Energy stock appears to be overvalued.
The current stock price of €67.48 is trading 18.8% above its estimated GF Value™ of €56.80.
GuruFocus considers Alliant Energy to be Modestly Overvalued.
Key valuation signals for FRA:AY1:
PEG Ratio: 5.17 (near median its 10-year median of 5.69)
GF Value™: €56.80 vs. price of €67.48 (18.8% above fair value)
Industry Position: 202.3% above the Utilities - Regulated median (#238 of 300)
No single metric tells the full story. See the FRA:AY1 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Alliant Energy is the parent of two regulated utilities, Interstate Power and Light and Wisconsin Power and Light. Together, IPL and WPL serve nearly 1 million electric customers and 425,000 natural gas-only customers. Both subsidiaries engage in the generation and distribution of electricity and the distribution and transportation of natural gas. Alliant also owns a 16% interest in American Transmission.
78GF Score
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