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B3 · BRL

ISAE3

Isa Energia Brasil SA

R$34.08+4.32% (R$1.41)
Day's range
R$34.08 – R$34.30
Day's volume
R$20.4k
52-week range
R$28.10 – R$36.89

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See how ISAE3 weighs in your net worth, what it has paid you and how far it is from your target allocation.

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ISAE3 in numbers

Market cap
R$21bn
P/E
8.51
P/B
1.08
Dividend yield (12m)
5.43%
Net debt/EBITDA
6.32

The 12-month dividend yield of ISAE3 is 5.43%, below its 5-year average of 8.26%.

ISAE3 price history

01/10/202530/09/2026
Compare with

ISAE3 risk and return

Monthly closes adjusted for splits and distributions.

Metric12 months36 months60 months
Return+15.36%+41.65%+38.62%
Volatility (annualised)12.83%16.85%16.03%
Largest drawdown-9.91%-13.99%-16.51%
Positive months8/1221/3632/60

How much did investing in ISAE3 return?

R$1,000.00 invested on 01/09/2021 would be worth R$1,408.98 today.

Value today in ISAE3
R$1,408.98
Return over the period
+40.90%
Return per year
+7.10%
In the Ibovespa
R$1,657.66

With dividends reinvested, before taxes and costs, at month-end closes. Past returns do not guarantee future ones.

ISAE3 fundamentals

Valuation

  • P/E
    8.51
  • P/B
    1.08
  • EV/EBITDA
    10.34
  • EV/EBIT
    10.42
  • EV/Revenue
    5.05
  • P/EBIT
    4.05
  • P/S
    1.96
  • P/OCF
    -16.87
  • P/FCF
    -30.86
  • Earnings yield
    9.60%
  • PEG ratio
    —
  • Earnings per share
    R$4.01
  • Book value per share
    R$31.51

Debt

  • Net debt
    R$32.9bn
  • Net debt/EBITDA
    6.32
  • Net debt/Equity
    1.46
  • Debt/Equity
    1.54
  • Current ratio
    5.28
  • Quick ratio
    5.22
  • Cash ratio
    1.29

Efficiency

  • Gross margin
    45.82%
  • EBITDA margin
    48.78%
  • Operating margin
    48.44%
  • Net margin
    26.95%
  • Asset turnover
    0.21

Profitability

  • ROE
    12.71%
  • ROA
    5.76%
  • ROIC
    7.90%
  • Payout
    46.20%

Growth

  • Revenue CAGR (5 years)
    21.86%
  • Earnings CAGR (5 years)
    -4.37%
  • Revenue growth (year)
    18.13%
  • Earnings growth (year)
    -30.03%
  • Revenue growth (quarter)
    30.64%
  • Earnings growth (quarter)
    -13.25%

What is ISAE3's fair price?

Two classic value formulas, with today's numbers. The current price is R$34.08.

Graham's fair price
R$53.29
56.36% above the price

√(22.50 × R$4.01 × R$31.51)

Benjamin Graham paid no more than a P/E of 15 and a P/B of 1.5. Their product, 22.5, times earnings (EPS) and book value per share gives the fair price.

Bazin's ceiling price
R$44.21
29.73% above the price

R$2.65 (5-year average) ÷ 6%

Décio Bazin only bought shares yielding at least 6% a year in distributions. The ceiling price is the average dividend per share of recent years divided by 6%.

Graham ignores growth and debt; Bazin assumes past distributions will repeat. They are reference points for comparison, not a buy recommendation.

ISAE3 indicators by year

Multiples at each year's closing price; margins and returns from that year's accounts.

Indicator20252024202320222021202020192018
P/E9.155.748.228.436.645.7510.2924.12
P/B1.051.001.311.151.351.371.324.02
EV/EBITDA12.358.229.939.037.015.528.7519.92
Dividend yield15.87%7.23%3.00%1.20%13.98%3.63%4.89%72.97%
Earnings per shareR$3.72R$5.31R$4.31R$3.43R$4.58R$5.10R$2.68R$2.86
Book value per shareR$32.54R$30.46R$27.00R$25.10R$22.45R$21.44R$20.89R$17.15
ROE11.42%17.43%15.97%13.68%20.41%23.80%12.81%16.65%
ROIC7.39%10.30%10.80%10.34%13.62%18.38%11.86%13.34%
Gross margin39.35%46.91%59.67%60.17%74.48%69.27%71.19%77.23%
EBITDA margin44.27%64.88%63.83%64.54%80.59%120.31%71.44%77.50%
Net margin26.01%43.91%45.71%41.50%54.55%90.94%53.33%59.09%
Net debt/EBITDA6.974.334.043.612.511.171.071.53

ISAE3 financial statements

Line202520242023202220212020
Net revenueR$9.4bnR$8bnR$6.2bnR$5.5bnR$5.5bnR$3.7bn
Cost of sales-R$5.7bn-R$4.2bn-R$2.5bn-R$2.2bn-R$1.4bn-R$1.1bn
Gross profitR$3.7bnR$3.7bnR$3.7bnR$3.3bnR$4.1bnR$2.6bn
EBITDAR$4.2bnR$5.2bnR$4bnR$3.5bnR$4.5bnR$4.4bn
EBITR$4.1bnR$5.1bnR$3.9bnR$3.5bnR$4.4bnR$4.4bn
Net finance result-R$1.4bn-R$962.6m-R$821.6m-R$812.2m-R$631m-R$209.2m
Profit before taxR$2.8bnR$4.2bnR$3.1bnR$2.7bnR$3.8bnR$4.2bn
Income tax-R$269.3m-R$615.9m-R$228.6m-R$358.3m-R$768.4m-R$835.4m
Net incomeR$2.4bnR$3.5bnR$2.8bnR$2.3bnR$3bnR$3.4bn

Figures the company filed with the CVM. Debt excludes leases; each quarter is that quarter alone.

Does ISAE3 pay dividends?

Announced payments
TypeLast day to ownPaymentPer share
Interest on equity25/11/202607/12/2026R$0.19
Interest on equity09/11/202607/12/2026R$0.19
Interest on equity08/10/202607/12/2026R$0.19

Dividend yield per year

  • 26.36%2017
  • 72.97%2018
  • 4.89%2019
  • 3.63%2020
  • 13.98%2021
  • 1.20%2022
  • 3.00%2023
  • 7.23%2024
  • 15.87%2025
  • 3.45%2026
Payment history
TypeLast day to ownPaymentPer share
Dividend17/04/202629/04/2026R$0.14
Dividend02/04/202629/04/2026R$0.14
Dividend12/03/202629/04/2026R$0.14
Interest on equity26/02/202631/03/2026R$0.25
Interest on equity29/01/202625/02/2026R$0.25
Interest on equity29/12/202528/01/2026R$0.25
Interest on equity17/12/202530/12/2025R$0.22
Interest on equity24/11/202512/12/2025R$0.22
Interest on equity30/10/202528/11/2025R$0.22
Interest on equity11/03/202521/03/2025R$0.79
Interest on equity11/02/202521/02/2025R$0.79
Interest on equity10/01/202521/01/2025R$0.79
See all 111 distributions
Earlier distributions
TypeLast day to ownPaymentPer share
Interest on equity09/01/202521/01/2025R$2.36
Interest on equity13/12/202310/04/2024R$1.96
Interest on equity13/12/202315/01/2024R$0.24
Interest on equity26/12/202211/04/2023R$1.06
Dividend22/12/202118/01/2022R$0.17
Interest on equity22/12/202117/01/2022R$0.17
Interest on equity03/11/202116/11/2021R$0.78
Dividend03/11/202116/11/2021R$0.53
Dividend06/07/202115/07/2021R$0.50
Dividend30/03/202121/05/2021R$0.80
Dividend25/02/202121/05/2021R$0.81
Dividend16/12/202018/01/2021R$0.18
Interest on equity16/12/202018/01/2021R$0.66
Dividend04/11/202013/11/2020R$0.52
Dividend06/07/202016/07/2020R$0.15
Interest on equity16/04/202029/04/2020R$0.23
Interest on equity13/12/201920/01/2020R$0.16
Dividend08/11/201903/12/2019R$0.45
Interest on equity08/11/201903/12/2019R$0.34
Interest on equity02/08/201919/08/2019R$0.56
Interest on equity06/12/201817/12/2018R$3.59
Dividend06/12/201817/12/2018R$3.84
Dividend05/06/201818/06/2018R$4.62
Dividend17/04/201815/06/2018R$0.51
Dividend17/11/201728/11/2017R$2.22
Dividend01/06/201713/06/2017R$0.82
Dividend02/12/201620/01/2017R$0.83
Dividend21/06/201630/06/2016R$0.67
Dividend25/11/201507/12/2015R$1.39
Dividend06/05/201529/06/2015R$0.19
Dividend26/05/201508/06/2015R$0.69
Dividend24/11/201404/12/2014R$1.02
Interest on equity12/08/201428/08/2014R$0.20
Dividend01/04/201431/07/2014R$0.20
Interest on equity23/12/201330/01/2014R$1.31
Dividend29/06/201227/07/2012R$0.64
Interest on equity29/06/201227/07/2012R$0.42
Interest on equity16/04/201230/04/2012R$0.42
Dividend16/01/201230/01/2012R$1.11
Interest on equity16/01/201230/01/2012R$0.42
Interest on equity10/10/201131/10/2011R$0.40
Dividend10/10/201131/10/2011R$1.14
Dividend06/07/201128/07/2011R$1.06
Dividend29/04/201128/07/2011R$0.11
Interest on equity06/04/201129/04/2011R$0.43
Dividend06/04/201129/04/2011R$1.19
Dividend14/01/201128/01/2011R$0.74
Interest on equity14/01/201128/01/2011R$0.42
Interest on equity07/10/201025/10/2010R$0.42
Dividend07/10/201025/10/2010R$0.96
Interest on equity07/07/201023/07/2010R$0.41
Dividend07/07/201023/07/2010R$0.42
Dividend04/05/201001/07/2010R$0.51
Interest on equity08/04/201020/04/2010R$0.41
Dividend08/04/201020/04/2010R$0.86
Dividend11/01/201022/01/2010R$1.07
Interest on equity15/12/200930/12/2009R$0.41
Interest on equity06/10/200921/10/2009R$0.41
Dividend06/10/200921/10/2009R$0.69
Dividend06/07/200921/07/2009R$0.41
Interest on equity22/06/200901/07/2009R$0.43
Dividend15/04/200924/04/2009R$0.71
Interest on equity13/04/200924/04/2009R$0.42
Dividend12/01/200920/01/2009R$0.82
Interest on equity12/12/200830/12/2008R$0.40
Dividend09/10/200817/10/2008R$0.37
Interest on equity09/10/200817/10/2008R$0.40
Interest on equity08/07/200817/07/2008R$0.39
Dividend08/07/200817/07/2008R$0.97
Dividend10/04/200818/04/2008R$0.45
Interest on equity31/03/200818/04/2008R$0.41
Dividend21/01/200811/02/2008R$1.14
Interest on equity13/12/200718/01/2008R$0.26
Interest on equity05/11/200719/11/2007R$1.34
Dividend01/10/200717/10/2007R$1.16
Dividend10/07/200718/07/2007R$1.61
Dividend20/04/200619/06/2006R$0.65
Interest on equity28/12/200513/01/2006R$0.60
Interest on equity23/06/200501/12/2005R$0.36
Interest on equity22/09/200507/10/2005R$0.64
Interest on equity02/12/200423/06/2005R$0.32
Interest on equity20/05/200402/12/2004R$0.18
Interest on equity18/09/200321/06/2004R$0.53
Interest on equity22/05/200327/08/2003R$0.46
Dividend25/04/200324/06/2003R$0.09
Interest on equity26/12/200214/02/2003R$0.33
Interest on equity04/07/200223/08/2002R$0.36
Dividend26/04/200225/06/2002R$0.22
Interest on equity18/12/200125/06/2002R$0.08
Interest on equity05/07/200128/12/2001R$0.21
Dividend24/04/200122/06/2001R$0.06
Interest on equity21/12/200022/06/2001R$0.21
Dividend16/04/2012—R$0.21
Dividend16/04/2012—R$0.33
Interest on equity06/07/2011—R$0.42
Dividend19/03/2007—R$0.41
Dividend19/03/2007—R$0.57
Interest on equity25/05/2006—R$0.18
Interest on equity03/10/2002—R$0.21
Splits, share consolidations and bonus shares
EventLast day to ownRatio
Split05/04/20194 for 1
Share consolidation14/08/20071 for 1000

About Isa Energia Brasil

Sector
Energia
Segment
Energia Elétrica
Listing segment
Level 1
Tag along
80.00%
Free float
66.45%
Shares issued
238.17m ordinary · 465.16m preferred
Average daily trading
R$104.7k
Listed since
26/07/1999
CNPJ
02.998.611/0001-04

ISA Energia Brasil, anteriormente conhecida como ISA CTEEP, é uma concessionária privada de transmissão de energia elétrica com ações na B3 sob os códigos ISAE3 e ISAE4. A companhia opera uma extensa malha de linhas e subestações, com contratos de concessão de longo prazo e receita regulada, desempenhando papel relevante no escoamento da energia gerada no país, especialmente na região Sudeste. O negócio é centrado em disponibilidade e confiabilidade da rede de transmissão, com investimentos contínuos em expansão, reforço e modernização de ativos. Como transmissora, a empresa tem exposição menor ao risco hidrológico e ao preço de energia do que geradoras e comercializadoras, mas depende de execução de obras, disciplina regulatória e eficiência operacional. No setor elétrico brasileiro, está entre as empresas de referência em infraestrutura de alta tensão.

Investor website
ShareholdersAs of 31/12/2026, from the Formulário de Referência filed with the CVM.
ShareholderOrdinaryPreferredTotal
Isa Capital do Brasil S.A.Controlling96.93%1.11%33.56%
AXIA ENERGIA S.A.2.23%25.31%17.49%
AXIA ENERGIA S.A.0.01%2.84%1.88%
Outros0.83%70.75%47.07%

Questions about ISAE3

How much is ISAE3 today?

ISAE3 is at R$34.08 (4.32% on the day), last traded on 30/09/2026.

How much did ISAE3 pay in dividends in 2025?

ISAE3 paid R$5.40 per share in 2025, a dividend yield of 15.87%.

When is the next ISAE3 dividend?

The next announced payment is R$0.19 per share on 07/12/2026.

What are the P/E and P/B of ISAE3?

ISAE3 trades at a P/E of 8.51 and a P/B of 1.08.

How much did ISAE3 return in 12 months?

ISAE3 returned 15.36% in 12 months, with annualised volatility of 12.83% and a largest drawdown of -9.91%.

What sector is ISAE3 in?

Isa Energia Brasil is in the Energia sector, Energia Elétrica segment.