ISA Energía Brasil S.A (ISAE3) Fair Value & Analysis
Utilities · BR · Market cap R$21.1B
Fair value as of: Jul 12, 2026
From 17 valuation models · updated 28 days ago
Share price −2.9% over the past month.
Below-average quality, screening 83% undervalued on our models.
What matters now
- The price is below even our cautious bear case (R$43.34). The market is more pessimistic than our downside scenario.
- Solid quality (47/100) at a price below fair value, the discount is the argument here, not the business quality.
Price vs Fair Value (5 years)
White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Jul 12, 2026.
How to read this chart
60‑month range R$21.90 – R$35.25 · fair‑value band R$43.34 – R$72.23 · the R$31.50 price screens below the R$57.78 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Jul 12, 2026.
Analysis
ISA Energía Brasil S.A (ISAE3) currently trades at R$31.50, while our model-based Fair Value estimate is R$57.78, implying the stock looks roughly 83.4% undervalued today. The Quality Score stands at 47/100 (below-average quality), in the Utilities sector. Bull case: trading below our estimate, it may offer upside if the fundamentals hold. Bear case: a low price can be a value trap when quality is weak or the data is thin (evidence: high), always confirm before acting.
Over the trailing twelve months, ISA Energía Brasil S.A generated revenue of R$9.5B at a net margin of 24.7%. Revenue grew 4.1% year over year. It earns a return on equity of 11.3%. Net debt stands at R$14.6B. Fundamentals as of Jul 12, 2026
Our scenario range runs from R$43.34 (bear case) to R$72.23 (bull case); at R$31.50, the current price sits below that range. Bear and bull are the same models run on conservative and optimistic assumptions (margins, growth, valuation multiples), so a plausible valuation range, not a price target. The share trades about 11% below its 52-week high and 12% above its 52-week low, currently below its 200-day average. For context, the median of 10 Utilities peers we cover trades at -59% fair-value upside, at 83%, ISAE3 screens cheaper than that median.
Fair Value models
Each model estimates fair value its own way; the Fair Value above is the evidence-weighted blend. Evidence (0–100) measures how completely this model’s inputs are available: well-fed models carry more weight in the blend. The spread across models is intentional, each one stresses a different value driver; dividend models, for instance, come out structurally low when payout is small.
All 17 models by family
Widest divergence: DCF Models (R$98.93) versus Asset-Based (R$21.51). Highest evidence: Residual Income (76).
Key figures & financial health
More key figures
Figures from reported company fundamentals · as of Jul 12, 2026. TTM = trailing twelve months.
Quality Score breakdown
Of which business quality 41 · Market factors (momentum, volatility) 56
Non-valuation factor families (profitability, growth, cashflow, financial strength, momentum …), each academically grounded. Valuation itself sits in the Fair Value and is deliberately excluded here to avoid double-counting.
About the company
ISA Energía Brasil S.A. engages in the electric power transmission business in Brazil. As of December 31, 2025, it had a total installed transformation capacity of 84,910 MVA together with transmission lines of 23,000 kilometers. It operates in the states of Bahia, Espírito Santo, Minas Gerais, Rio de Janeiro, and São Paulo. ISA Energía Brasil S.A.
Full company description
ISA Energía Brasil S.A. engages in the electric power transmission business in Brazil. As of December 31, 2025, it had a total installed transformation capacity of 84,910 MVA together with transmission lines of 23,000 kilometers. It operates in the states of Bahia, Espírito Santo, Minas Gerais, Rio de Janeiro, and São Paulo. ISA Energía Brasil S.A. was incorporated in 1999 and is headquartered in São Paulo, Brazil.
Company description, as reported by the company or data provider.
Revenue & earnings trend
FY2021 – FY2025 · reported fiscal years
ISA Energía Brasil S.A reported revenue of R$9.4B in FY2025 versus R$5.5B in FY2021, a compound +14.2%/yr. Reported net income was R$2.4B in FY2025, compounding −5.1%/yr from FY2021.
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Peer Group
Utilities - Independent Power Producers · 78 stocks
How this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.
Valuation Multiples vs Utilities - Independent Power Producers median · lower = cheaper
Snowflake
Five quick dimensions, each 0 to 100: VALUE (fair-value potential), FUTURE (revenue growth), PAST (return on equity), HEALTH (low debt), DIVIDEND (yield). Green = this stock, grey = typical sector peer.
Values & ESG
Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.
ESG scores are not available for this stock yet. Values and ESG data are contextual and can differ between providers.
Similar stocks
10 more Utilities - Independent Power Producers stocks, each showing price versus our Fair Value estimate (as of Jul 12, 2026).
| Stock | Price | Fair Value | vs Fair Value |
|---|---|---|---|
| Constellation Energy Corporation CEG | $257.57 | $89.08 | -65% |
| Vistra Corp VST | $158.86 | $47.59 | -70% |
| Adani Power Limited ADANIPOWER | ₹218.45 | ₹75.57 | -65% |
| CGN Power Co 003816 | ¥3.88 | ¥3.13 | -19% |
| NRG Energy, Inc NRG | $137.90 | $56.02 | -59% |
| Gulf Development Public Company GULF | 67.50 THB | 40.44 THB | -40% |
| Adani Energy Solutions Limited ADANIENSOL | ₹1,730 | ₹342.02 | -80% |
| Talen Energy Corporation TLN | $372.37 | $44.67 | -88% |
| Datang International Power Generation Co 601991 | ¥5.80 | ¥4.95 | -15% |
| Power Assets Holdings 0006 | HK$58.45 | HK$31.90 | -45% |
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Frequently asked questions
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How we calculate Fair Value
Each company is valued through a stack of independent intrinsic-value models (DCF variants, residual-income, multiples and more), blended into one family-balanced consensus and weighted by how much trustworthy data backs it. A separate quality layer scores the fundamentals. Every input is real reported data, nothing guessed.
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