Interconnection Electric SA ESP (IESFY) fair value: what the stock is really worth
As of Nov 10, 2026: fair value (intrinsic value) of Interconnection Electric SA ESP stock $202, price $220, that is 8.1% below the price, quality 47 out of 100. Rating: fairly valued. Calculated from audited financials with 24 of our 26 valuation models and 37 quality factors, updated daily.
69 individual criteria per stock, every one traceableSee the method →
Price vs Fair Value
White line = price, green steps = our fair value per fiscal year. As of Nov 10, 2026.
How to read this chart
60‑month range $3.41 – $267.11 · fair‑value band $120.78 – $358.74 · the $219.90 price screens above the $202.13 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). As of Nov 10, 2026.
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Interconexión Eléctrica S.A. E.S.P. engages in the electric power, roads, and ICT and telecommunications business activities.
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It designs, builds, operates, and maintains high voltage power transmission systems; connects generators, operators, and consumers to electrical systems; constructs infrastructure projects; and provides maintenance services, as well as electrical and energy studies.
The company also designs, builds, operates, and maintains highway infrastructure; and offers telecommunications and ICT solutions. The company was founded in 1967 and is based in Medellín, Colombia. Interconexión Eléctrica S.A. E.S.P. operates as a subsidiary of Ecopetrol S.A.
Stock analysis
Interconnection Electric SA ESP (IESFY) currently trades at $219.90, while our model-based Fair Value estimate is $202.13, so the stock looks roughly fairly valued today (gap 8.8%).
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Valuation
Bull case: the Growth Earnings group reads highest at a median of $273.62 per share, and 8 of the 24 models we run sit above the $219.90 price.
Bear case: the Growth DCF group reads lowest at $135.92, and 16 of the 24 models stay below the price. Data coverage for this calculation is medium.
Scenario range: $120.78 (bear) to $358.74 (bull), the price of $219.90 sits inside it. Bear and bull are the same models on cautious and optimistic assumptions, a range, not a price target.
Quality & growth
The Quality Score stands at 47/100 (below-average quality), in the Utilities sector.
Mixed Growth: Revenue is growing, but margins or cash flow do not fully confirm the trend.
Interconnection Electric SA ESP reported revenue of 15.9T COP in FY2025 versus 11.1T COP in FY2021, a compound +9.4%/yr. Reported net income was 2.4T COP in FY2025, compounding +9.8%/yr from FY2021.
Key figures
Market cap $9.8B Mid · P/E ratio 14.4 · P/S ratio 2.19 · EPS (TTM) $14.87 · Dividend yield 3.7% · Net margin 15.2% · Return on equity 15.1% · Return on assets (EBIT) 9.6% (5-year average).
Competitive moat
Our AI-assisted moat analysis scores the competitive advantage at 56 out of 100 (low confidence).
What moves the price
The share trades about 18% below its 52-week high and 47% above its 52-week low, currently above its 200-day average.
For context, the median of 10 Utilities peers we cover trades at −38% fair-value upside, at −8%, IESFY screens cheaper than that median.
Fair Value models
Bear$120.78Fair Value $202.13Bull$358.74
Price $219.90 · Downside -8.1%
Model ⓘEach model values the company its own way (discounted cash flow, earnings, assets, dividends). The fair value above starts from their evidence-weighted blend, not from a single model. In cyclical trough or peak years, after dilution or a stock split it is adjusted afterwards, so it can sit above or below the models. Based on fiscal year 2025 figures (about 10 months old). Earnings retained since then ($12.83 per share) are deliberately not added.Bear ⓘBear = the cautious scenario: the same model computed with conservative anchors (lower growth, margins and valuation multiples). Together with Bull it frames a plausible valuation range, not a price target.BaseBull ⓘBull = the optimistic scenario: the same model computed with favourable anchors (higher growth, margins and valuation multiples). Together with Bear it frames a plausible valuation range, not a price target. If a model's bull case is above four times its base value, the table shows that limit with a > sign (like the overall Bull above): beyond it no assumption holds.Coverage ⓘCoverage = how well-backed THIS model's estimate is for this stock (0–100): how complete and reliable its input data are, and how well the model fits the company. The final Fair Value is an evidence-weighted blend, so better-evidenced models count more. Green ≥70, amber 50–69, grey below 50.
Growth Quality ⓘGrowth is valuable only when reinvestment earns attractive returns (Aswath Damodaran): sustainable growth depends on return on capital, reinvestment and efficiency. Basis: total company revenue over the periods shown on the cards (3Y/5Y/all years), not per share, so a merger can show up as a growth jump; per-share earnings growth is in the value-creation card.73/100
Revenue is growing, but margins or cash flow do not fully confirm the trend.
Revenue growth 1 year
+6.6%
Revenue growth 3 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
+6.0%
Revenue growth 5 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
+11.8%
Start year 2020 (pandemic). Over 10 years: +11.7% a year
Revenue growth 17 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
+73.0%
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What shareholders gained per year (last 5 years), in COP ⓘWhat the business itself delivers per year: earnings growth per share plus the dividend yield. This is what you get IF the market keeps valuing the stock the same way: it contains no assumption about the market changing its mind. Computed per share, so buybacks count and a merger does not pass as growth. For a company that pays no dividend it is pure earnings growth per share. Period: earnings growth per share as CAGR over the last 5 reported fiscal years (annual statements), plus the current dividend yield. The start value is the median of the three years around the start, so a single crisis year (a pandemic or a write-down) does not distort the rate. Measured in COP: this currency has depreciated against the euro and dollar over the long run, so part of the nominal rate is currency erosion that never reaches a EUR/USD investor.
+11.5%
Earnings growth per share plus dividend.
Earnings per share, growth per year+7.8%
Dividend (yield on the price)3.7%
Profit margin 2020 to 2025 ⓘOperating margin then vs now, from reported annual statements. A falling margin after a boom year is the classic peak-earnings signal: the growth rate then leans on an inflated base.50% → 43%
Growth Forecast
A lot of optimism in the price
What the price assumes ⓘThis turns our valuation around: instead of asking what the share is worth, it asks what growth the current price requires. It uses the cash the company keeps after all spending (free cash flow), the same discount rate as our models, five years of growth, then slowing evenly to 2 % a year by year ten. Compared with the analysts' sales forecasts extended to the same five years (at least three analysts, for context only, it does not enter the Fair Value): within 3 percentage points counts as "in line" (amber), below that little optimism (green), above that a lot of optimism (red).
more than +80 %
Yearly growth needed for the next five years to justify today's price.
AI conclusion: Regulated transmission assets deliver strong earnings growth across Latin America, yet minimal differentiation and governance questions mark the main weakness.
Main risk: An upcoming regulatory reset for transmission tariffs in Colombia could reduce allowed revenues and squeeze margins on ISA's core regulated assets.
Bull case: ISA could leverage its scale and operational expertise to secure favorable tariff outcomes and concession renewals while expanding storage and decentralized energy solutions within allowed boundaries.
Bear case: Adverse tariff resets combined with blocked diversification and lost Peruvian concessions could constrain cash flows and slow the multi-year investment program across Latin America.
ISA keeps delivering strong earnings growth from its regulated transmission assets spread across several Latin American countries. The recent board resignation and upcoming extraordinary meeting now raise questions about oversight continuity while the firm advances a large multi-year investment program. Will governance stability support faster project execution or slow the rollout of new capacity?
Compare Interconnection Electric SA ESP with another stock
Price, fair value, quality and upside side by side.
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Peer Groupⓘ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.Utilities - Regulated Electric · 155 stocks
Beats the industry median on 9/13 measures
Overall it ranks above its industry peers.
Valuation
Quality Score47 · Above median
Fair Value upside−8.1% · Above median
Profitability
Return on equity (12 months)15.1% · Top 25%
Return on assets3.2% · Above median
Net margin (12 months)14.6% · Above median
Operating margin (12 months)0.0% · Bottom 25%
Growth and dividend
Revenue growth (quarter YoY)42.3% · Top 25%
Dividend yield (12 months)3.7% · Above median
Balance sheet
Debt / equity1.80× · Highest 25%
Valuation Multiplesvs Utilities - Regulated Electric median · lower = cheaper
P/E (12 months)14.4× · Cheaper than median
P/B1.80× · book value is mostly goodwill ⓘGoodwill and other intangible assets are larger than the equity. The book value mainly reflects prices paid for past acquisitions, so we do not rank this P/B against the peer group.
For bloggers, editors and developers: paste this into your site or blog (a “Custom HTML” block in WordPress), it shows the current fair value and links back here. Free, plain HTML, and welcome. Full data streams (CSV/JSON) at /developers.
Cite: Fair Value Calculator (2026). "Interconnection Electric SA ESP Fair Value". https://www.fairvalue-calculator.com/stock/IESFY
Frequently asked questions
Is Interconnection Electric SA ESP (IESFY) overvalued or undervalued?
As of Nov 10, 2026, our model estimates a fair value of $202.13 versus a price of $219.90, about 8% lower (fairly valued).
What is the fair value of IESFY?
Our model-based fair value for Interconnection Electric SA ESP is $202.13 (as of Nov 10, 2026), built from audited fundamentals. The current price: $219.90.
What is the quality score of IESFY?
Interconnection Electric SA ESP has a Quality Score of 47/100. It measures business quality (profitability, growth, cash flow, balance-sheet strength, investment discipline, share issuance). Market factors such as price momentum and volatility do not enter the number; they are shown separately in the detail view.
What is the price target for Interconnection Electric SA ESP (IESFY)?
Our model-based price target is the fair value of $202.13 (as of Nov 10, 2026) from 24 valuation models. Cautious scenario $120.78, optimistic scenario $358.74. It is a calculation from audited fundamentals, not an analyst target.
What is the Interconnection Electric SA ESP stock forecast for 2026?
Our models put fair value at $202.13, about 8% lower versus a price of $219.90 (fairly valued). Cautious scenario $120.78, optimistic scenario $358.74. The calculation is refreshed regularly with new filings.
What is the revenue of Interconnection Electric SA ESP (IESFY)?
Interconnection Electric SA ESP reported trailing-twelve-month revenue of about 15.5T COP (latest available figure, as of Nov 10, 2026).
Does Interconnection Electric SA ESP pay a dividend?
Interconnection Electric SA ESP currently shows a dividend yield of 3.68% relative to its recent price (as of Nov 10, 2026).
How much is the dividend of Interconnection Electric SA ESP (IESFY) and when is the ex-dividend date?
Interconnection Electric SA ESP has a dividend yield of 3.7%. The last ex-dividend date was May 20, 2026. A dividend has been paid every year since at least 2004. The payout ratio is 96.5% of earnings. Free cash flow covers the dividend 0.36 times. Our assessment: Watch coverage. The dividend isn’t fully covered by free cash flow or earnings, part of it is funded from reserves or debt. Fine for now, but worth watching: if it stays uncovered, the dividend could be cut.
What growth is priced into Interconnection Electric SA ESP (IESFY)?
For today's price to be fair in a discounted-cash-flow model, Interconnection Electric SA ESP would have to grow free cash flow by more than 80 % per year for five years (discount rate 8.5 %, then slowing evenly to 2 % perpetual growth by year ten). Over the last 5 years revenue grew +11.8 % per year. As of Nov 10, 2026.
What discount rate (WACC) does the fair value of IESFY use?
Our models discount Interconnection Electric SA ESP at 8.5 %: a base by market capitalisation (mid), damped by beta 0.32, country premium for USA. The same rate applies in all 26 models.
What is a reverse DCF?
A reverse DCF turns the usual calculation around. Instead of deriving a value from assumptions, it takes today's price as given and asks: what free-cash-flow growth would a company have to deliver for exactly this price to be fair? The result is not a forecast but the expectation already priced in. For Interconnection Electric SA ESP that is more than 80 % per year for five years, then slowing evenly to 2 % by year ten, using the same discount rate (8.5 %) and the same formula as our fair value.
How much growth has Interconnection Electric SA ESP (IESFY) delivered so far?
Over the past 5 years revenue at Interconnection Electric SA ESP grew +11.8 % a year. The price currently implies free-cash-flow growth of more than 80 % per year. Comparing the two shows how much confidence is in the price: if it demands more than has been delivered, the business has to accelerate for the maths to work.
How fast is the sector of Interconnection Electric SA ESP (IESFY) growing?
The median revenue growth in the sector is +4.8 % a year. That is the yardstick for the growth priced into Interconnection Electric SA ESP (more than 80 % per year): it shows whether the expectation is within the usual range or beyond it.
What is the free cash flow yield of Interconnection Electric SA ESP (IESFY)?
The free-cash-flow yield on the price is 0.11 %: that much free cash flow Interconnection Electric SA ESP produces per unit of market value. When it exceeds the discount rate of our models (8.5 %), the business already earns more than its cost of capital demands, and the price needs little additional growth.
What is the intrinsic value of Interconnection Electric SA ESP (IESFY)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Interconnection Electric SA ESP it is $202.13 per share (as of Nov 10, 2026), against a price of $219.90. It is the blended result of 24 valuation models in 7 families (DCF Models, Earnings-Based, Dividend Discount, Multiples, Growth DCF, Economic Profit, Growth Earnings).
Is Interconnection Electric SA ESP stock overvalued or undervalued in 2026?
As of Nov 10, 2026, IESFY trades above its calculated fair value: price $219.90, fair value $202.13, a gap of about −8% (fairly valued). The calculation is refreshed with each new quarterly report, so the verdict can change during the year.
Is fair value the same as the market price of IESFY?
No. The price is what the market pays today ($219.90); the fair value is what the company's own numbers justify ($202.13). For Interconnection Electric SA ESP the two are $17.77 per share apart. That gap is exactly why we show both numbers side by side.
How much is Interconnection Electric SA ESP worth?
The market values Interconnection Electric SA ESP at about $9.8B (market capitalisation, as of Nov 10, 2026). Per share that is $219.90; our models calculate a fair value of $202.13 per share.
What do the bullish and bearish scenarios say about IESFY?
Our models span a range for Interconnection Electric SA ESP: cautious scenario $120.78, base $202.13, optimistic $358.74 per share (as of Nov 10, 2026, price $219.90). The range comes from different growth and margin assumptions, not from analyst opinions.
What is the P/E ratio of IESFY?
Interconnection Electric SA ESP trades at a price-to-earnings ratio of 14.4 (as of Nov 10, 2026). A P/E on its own says little: it compares the price with ONE year of profit, while our fair value of $202.13 is built from several models across several years. Other multiples: P/B 1.8, P/S 2.1, EV/EBITDA 6.9.
How solid is the balance sheet of Interconnection Electric SA ESP (IESFY)?
Balance-sheet figures for Interconnection Electric SA ESP (as of Nov 10, 2026): return on equity 15.1%, debt of 1.80 per unit of equity. They feed the Quality Score of 47/100, which measures business quality independently of the share price.
How far is IESFY from its 52-week high?
Interconnection Electric SA ESP trades at $219.90, about 18% below its 52-week high of $267.11 and 47% above the low of $149.62 (as of Nov 10, 2026). Distance from the high says nothing about value: that is what the fair value of $202.13 is for.
Which stocks are comparable to Interconnection Electric SA ESP?
From the same area (Utilities) we also value NextEra Energy, Inc, The Southern Company, Duke Energy Corporation, American Electric Power Company, among others. Each of them has its own fair-value calculation on this site using the same models, so the comparison is like for like.
Is Interconnection Electric SA ESP stock attractive at the current price?
The data as of Nov 10, 2026: price $219.90, calculated fair value $202.13 (−8%), Quality Score 47/100, from 24 models. Whether that fits your horizon and risk tolerance is your call. We provide the calculation, not investment advice.
How is the fair value of IESFY calculated?
We run Interconnection Electric SA ESP through 24 models from 7 families: DCF Models, Earnings-Based, Dividend Discount, Multiples, Growth DCF, Economic Profit, Growth Earnings. Every model gets the same audited fundamentals; the fair value of $202.13 builds on their evidence-weighted average, with the spread shown as a cautious and an optimistic scenario.
Is it still worth investing in stocks now?
The global stock market currently sits 15.1% above its aggregate fair value. Interconnection Electric SA ESP itself currently trades above fair value. An expensive market is no reason to stay out and no reason to buy everything at once: keep a broad savings plan running, buy single stocks only with money you can do without, and hold part of your money liquid while the market is high. The full picture including sectors is on is it worth investing now.
What is the share price of Interconnection Electric SA ESP (IESFY)?
The closing price on Nov 10, 2026 was $219.90. Our model-based fair value is $202.13, about 8% lower (fairly valued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Interconnection Electric SA ESP right now?
The model range is unusually wide ($120.78 to $358.74). The outcome hinges heavily on assumptions, so read the point estimate with caution. The price sits close to our fair value, market and models broadly agree here, little valuation tension.
Key figures of Interconnection Electric SA ESP
How large is the market capitalisation of Interconnection Electric SA ESP (IESFY)?
The market capitalisation of Interconnection Electric SA ESP is $9.8B. The stock-market value of the whole company: share price times number of shares. It is what the market asks for the entire business today.
What is the P/S ratio of Interconnection Electric SA ESP (IESFY)?
The price-to-sales ratio of Interconnection Electric SA ESP is 2.19 (P/E × margin). Price to sales: market value relative to yearly revenue. Useful when profit is thin or distorted.
What are the earnings per share of Interconnection Electric SA ESP (IESFY)?
Earnings per share at Interconnection Electric SA ESP are $14.87 (price ÷ EPS = P/E 14.4). Earnings per share over the last twelve months: total profit spread across every single share.
What is the dividend yield of Interconnection Electric SA ESP (IESFY)?
The dividend yield of Interconnection Electric SA ESP is 3.7% (payout 54.4%). Yearly dividend relative to the share price. 3% pays 3 per 100 invested. Below: how much of profit is used for it.
What is the net margin of Interconnection Electric SA ESP (IESFY)?
The net margin of Interconnection Electric SA ESP is 15.2% (fiscal year 2025). How much of every unit of revenue ends up as profit. 10% means 10 cents of profit per dollar of sales.
What is the return on equity of Interconnection Electric SA ESP (IESFY)?
The return on equity (ROE) of Interconnection Electric SA ESP is 15.1% (last twelve months). Profit relative to shareholders' equity, how efficiently the company works with its owners' money.
What is the EBIT return on assets of Interconnection Electric SA ESP (IESFY)?
On an EBIT basis the return on assets of Interconnection Electric SA ESP is 9.6% (avg 5y). Operating profit (EBIT) relative to everything the company owns, as a multi-year average. It describes the business model rather than one good or bad year.
How fast is revenue growing at Interconnection Electric SA ESP (IESFY)?
Revenue at Interconnection Electric SA ESP is growing +42.3% versus a year earlier (3y avg +6.0%). How much revenue grew versus a year earlier (YoY). The 3-year average next to it puts the single year in context.
How fast are earnings growing at Interconnection Electric SA ESP (IESFY)?
Earnings per share at Interconnection Electric SA ESP are growing +52.7% versus a year earlier. How much earnings per share grew versus a year earlier.
How much net debt does Interconnection Electric SA ESP (IESFY) carry?
The net debt of Interconnection Electric SA ESP is 31.3T COP (fiscal year 2025, ≈ 37.0 yrs of FCF). Debt minus cash on hand. The note shows how many years of free cash flow could in theory pay it off.
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Some data
Nov 10, 2026