Question 1

What is Alliant Energy's P/E ratio?

Accepted Answer

Alliant Energy (LNT) P/E ratio is 23.0× as of June 5, 2026. The ratio is calculated by dividing market capitalisation by trailing twelve-month earnings (net income), using USD-normalised financials (IAS 21 exchange-rate translation for non-USD reporters).

Question 2

How is the P/E ratio calculated?

Accepted Answer

P/E = Share Price ÷ Trailing Twelve-Month (TTM) Diluted EPS, or equivalently Market Capitalisation ÷ TTM Net Income. All inputs are sourced from audited GAAP/IFRS filings and translated to USD using period-end exchange rates so the multiple is comparable across companies and currencies.

Question 3

What is the P/E ratio?

Accepted Answer

The price-to-earnings (P/E) ratio, also called the earnings multiple, measures how much investors pay per dollar of a company's trailing twelve-month (TTM) earnings. It is calculated as share price ÷ TTM diluted EPS (equivalent to market capitalisation ÷ TTM net income). A higher P/E implies the market is pricing in stronger future earnings growth or lower risk; a lower P/E can signal slower expected growth, higher risk, or potential undervaluation.

Question 4

What is a good P/E ratio for Alliant Energy?

Accepted Answer

There is no universal "good" P/E. As a rule of thumb, the S&P 500 has historically averaged a P/E in the mid-to-high teens; mature, slow-growth businesses commonly trade in the 10–18× range, while high-growth or asset-light companies often trade at 25–50×+. What matters is the comparison to sector peers and to the company's own historical range. For Alliant Energy specifically, the relevant sector benchmark is the current sector median of 21.4×.

Question 5

Is Alliant Energy's P/E ratio high or low?

Accepted Answer

Alliant Energy's P/E ratio of 23.0× is above its own 5-year average of 20.8× and above the sector median of 21.4×. That places the current reading at the 77th percentile of its 10-year history. A higher multiple usually reflects stronger expected growth, lower perceived risk, or higher returns on capital; a lower multiple reflects the opposite.

Question 6

What is Alliant Energy's historical P/E ratio range?

Accepted Answer

In the available daily series, Alliant Energy (LNT) P/E ratio has ranged from a low of 8.0× in 2008 to a high of 1921.2× in 2005. The 5-year average is 20.8× and the 5-year median is 20.8×.

Question 7

What was Alliant Energy's P/E ratio in 2025?

Accepted Answer

Alliant Energy (LNT) P/E ratio at the end of 2025 was 20.6×. Annual values reflect the multiple on the last trading day of each calendar year, using the trailing twelve-month earnings figure available at that date.

Question 8

Why does Alliant Energy's P/E ratio change over time?

Accepted Answer

Valuation multiples move with two inputs: the numerator (market capitalisation, which tracks the share price) and the denominator (earnings). Share-price changes — driven by interest rates, earnings expectations, risk appetite, and broader market sentiment — typically dominate short-term moves, while changes in the underlying fundamental drive the longer-term trend. As a result, the ratio can rise during stock-price rallies even if the business itself has not become more valuable, and fall during sell-offs even when fundamentals are improving.


2025	$16.71B	$810.00M	20.6×	-1.4×	Dec 31, 2025
2024	$15.18B	$690.00M	22.0×	+3.3×	Dec 31, 2024
2023	$13.11B	$703.00M	18.7×	-1.6×	Dec 31, 2023
2022	$13.86B	$685.00M	20.2×	-2.6×	Dec 31, 2022
2021	$15.39B	$674.00M	22.8×	+2.2×	Dec 31, 2021
2020	$12.87B	$624.00M	20.6×	-2.7×	Dec 31, 2020
2019	$13.19B	$564.80M	23.3×	+4.3×	Dec 31, 2019
2018	$9.97B	$522.30M	19.1×	-2.0×	Dec 31, 2018
2017	$9.85B	$467.50M	21.1×	-1.5×	Dec 31, 2017
2016	$8.62B	$381.70M	22.6×	+4.4×	Dec 31, 2016
2015	$7.08B	$388.40M	18.2×	-0.5×	Dec 31, 2015
2014	$7.36B	$393.30M	18.7×	+3.7×	Dec 31, 2014
2013	$5.63B	$376.20M	15.0×	+0.5×	Dec 31, 2013
2012	$4.87B	$335.70M	14.5×	-0.7×	Dec 31, 2012
2011	$4.88B	$321.90M	15.2×	+1.9×	Dec 31, 2011
2010	$4.06B	$306.30M	13.3×	-12.5×	Dec 31, 2010
2009	$3.34B	$129.70M	25.7×	+15.1×	Dec 31, 2009
2008	$3.21B	$302.00M	10.6×	-0.1×	Dec 31, 2008
2007	$4.57B	$425.30M	10.7×	-2.7×	Dec 31, 2007
2006	$4.36B	$323.80M	13.5×	-1907.7×	Dec 31, 2006
2005	$3.27B	$1.70M	1921.2×	+1898.9×	Dec 31, 2005
2004	$3.24B	$145.52M	22.3×	+8.5×	Dec 31, 2004
2003	$2.52B	$183.54M	13.8×	-0.3×	Dec 31, 2003
2002	$1.50B	$106.88M	14.1×	-0.2×	Dec 31, 2002
2001	$2.56B	$179.41M	14.3×	—	Dec 31, 2001


American States Water (AWR)	22.1×
Middlesex Water (MSEX)	21.8×
Evergy (EVRG)	21.4×
H2O America (HTO)	21.2×
CMS Energy (CMS)	21.1×
Essential Utilities (WTRG)	20.5×
Ameren (AEE)	19.9×
Duke Energy (DUK)	19.8×
MGE Energy (MGEE)	19.8×
American Electric Power Company (AEP)	19.4×
Consolidated Edison (ED)	19.1×
Pinnacle West Capital (PNW)	18.7×
Dominion Energy (D)	18.3×
Black Hills (BKH)	18.2×
Exelon (EXC)	18.1×
Public Service Enterprise Group (PEG)	17.8×
Northwest Natural Holding (NWN)	17.7×
New Jersey Resources (NJR)	16.2×
Avista (AVA)	16.0×
Eversource Energy (ES)	14.9×
Artesian Resources (ARTNA)	14.1×
PG&E (PCG)	13.1×
UGI (UGI)	12.2×
Edison International (EIX)	7.6×
AES (AES)	7.5×

P/E Ratio for Alliant Energy (LNT)

P/E Ratio daily chart for Alliant Energy (LNT)

Historical P/E Ratio for Alliant Energy (LNT) from 2001 to 2025

About P/E Ratio at Alliant Energy (LNT)

Alliant Energy P/E Ratio by Year

Alliant Energy P/E Ratio 2025: 20.6×

Alliant Energy P/E Ratio 2024: 22.0×

Alliant Energy P/E Ratio 2023: 18.7×

Alliant Energy P/E Ratio 2022: 20.2×

Alliant Energy P/E Ratio 2021: 22.8×

Sector peers by P/E Ratio — chart

Sector peers by P/E Ratio — table

Frequently asked questions

Alliant Energy (LNT) Key Financials

P/E Ratio daily chart for Alliant Energy (LNT)

Historical P/E Ratio for Alliant Energy (LNT) from 2001 to 2025

About P/E Ratio at Alliant Energy (LNT)

Alliant Energy P/E Ratio by Year

Alliant Energy P/E Ratio 2025: 20.6×

Alliant Energy P/E Ratio 2024: 22.0×

Alliant Energy P/E Ratio 2023: 18.7×

Alliant Energy P/E Ratio 2022: 20.2×

Alliant Energy P/E Ratio 2021: 22.8×

Sector peers by P/E Ratio — chart

Sector peers by P/E Ratio — table

Frequently asked questions

+What is Alliant Energy's P/E ratio?

+How is the P/E ratio calculated?

+What is the P/E ratio?

+What is a good P/E ratio for Alliant Energy?

+Is Alliant Energy's P/E ratio high or low?

+What is Alliant Energy's historical P/E ratio range?

+What was Alliant Energy's P/E ratio in 2025?

+Why does Alliant Energy's P/E ratio change over time?

Alliant Energy (LNT) Key Financials