ISA ENERGIA BRASIL (ISAE3) Fair Value & Analysis
Utilities · BR · Market cap R$21.1B (≈ $4.1B)
What is ISA ENERGIA BRASIL really worth?
Below-average quality, trading 42% below our fair value of R$56.59.
Strengths
Risks
For context
Fair value as of: Aug 21, 2026
From 17 valuation models · updated 15 days ago
Share price +5.6% over the past month.
What runs behind every stock
69 individual criteria per stock, every one traceable See the method →
What matters now
- The price is below even our cautious bear case (R$42.44). 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 Aug 21, 2026.
How to read this chart
60‑month range R$21.94 – R$35.25 · fair‑value band R$42.44 – R$70.74 · the R$33.05 price screens below the R$56.59 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Aug 21, 2026.
Analysis
ISA ENERGIA BRASIL (ISAE3) currently trades at R$33.05, while our model-based Fair Value estimate is R$56.59, implying the stock looks roughly 41.6% undervalued today. The Quality Score stands at 47/100 (below-average quality), in the Utilities sector. Bull case: the DCF Models group reads highest at a median of R$98.93 per share, and 15 of the 17 models we run sit above the R$33.05 price. Bear case: the Asset-Based group reads lowest at R$21.51, and 2 of the 17 models stay below the price. Evidence for this calculation is high.
Over the trailing twelve months, ISA ENERGIA BRASIL 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 Aug 21, 2026
Our scenario range runs from R$42.44 (bear case) to R$70.74 (bull case); at R$33.05, 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 6% below its 52-week high and 18% above its 52-week low, currently below its 200-day average. For context, the median of 10 Utilities peers we cover trades at −51% fair-value upside, at 71%, ISAE3 screens cheaper than that median.
Fair Value models
This estimate rests on fiscal year 2025 figures, and about 8 months have passed since. In that time the company retained roughly R$1.16 per share, which is 2.1 % of the fair value. The fair value deliberately does not add this in: the models value reported figures, not a projection.
Each model estimates fair value its own way; the Fair Value above is the evidence-weighted, family-balanced 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. Every input is real reported data, nothing guessed.
All 17 models by family
Widest divergence: DCF Models (R$98.93) versus Asset-Based (R$21.51). Highest evidence: EPV (70).
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Key figures & financial health
More key figures
Figures from reported company fundamentals · as of Aug 21, 2026. TTM = trailing twelve months.
Quality Score breakdown
Of which business quality 41 · Market factors (momentum, volatility) 61
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.
All values are scores from 0 to 100 (100 = best against fixed, research-based bands), not percentages. The three market factors (momentum, 52-week proximity, low volatility) are displayed but carry zero weight in the headline number: market sentiment is not a business property.
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 ENERGIA BRASIL 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 · 77 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
Strength profile in five axes (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.
Similar stocks
10 more Utilities - Independent Power Producers stocks, each showing price versus our Fair Value estimate (as of Aug 21, 2026).
| Stock | Price | Fair Value | vs Fair Value |
|---|---|---|---|
| Constellation Energy Corporation CEG | $285.05 | $88.09 | −69% |
| Vistra Corp VST | $144.22 | $50.39 | −65% |
| Adani Power Limited ADANIPOWER | ₹206.10 | ₹75.57 | −63% |
| CGN Power Co 003816 | ¥4.33 | ¥3.62 | −16% |
| Gulf Development Public Company GULF | 63.25 THB | 39.25 THB | −38% |
| NRG Energy, Inc NRG | $109.51 | $53.91 | −51% |
| Adani Energy Solutions Limited ADANIENSOL | ₹1,583 | ₹342.02 | −78% |
| Talen Energy Corporation TLN | $365.07 | $43.55 | −88% |
| Datang International Power Generation Co 601991 | ¥5.89 | ¥4.95 | −16% |
| Huaneng Power International, Inc 600011 | ¥6.92 | ¥9.14 | +32% |
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