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STOCK COMPARISON

Italgas SpA vs Naturgy Energy Group: Fair Value & Quality

Both stocks run through our valuation models. Here is how Italgas SpA (IG) and Naturgy Energy Group (NTGY) compare, as of Aug 8, 2026.

As of Aug 8, 2026, Fair Value Calculator sees Naturgy Energy Group as the more attractively valued of the two: Italgas SpA trades at €9.05 versus a fair value of €6.89 (-24%), while Naturgy Energy Group trades at €28.78 versus €35.80 (+24%).
Italgas SpA
IG.MI · EUR · Utilities
-24%
upside to fair value
overvalued
Price€9.05
Fair Value€6.89
Quality44/100
Naturgy Energy Group
NTGY.MC · EUR · Utilities
+24%
upside to fair value
undervalued
Price€28.78
Fair Value€35.80
Quality61/100

Head-to-head numbers

Green value = the better side for that row (for valuation multiples: lower = cheaper).

Italgas SpANaturgy Energy Group
Valuation
14.8×P/E (TTM)13.0×
3.30×P/S (TTM)1.62×
3.22×P/B3.30×
11.3×EV/EBITDA7.9×
2.82×PEG6.40×
4.1%Dividend yield—
€0.43Dividend per share—
Profitability
18%Net margin11%
51%Operating margin18%
20%Return on equity22%
5%Return on assets6%
Growth
1%Revenue growth (YoY)-7%
17.1%Avg. growth/yr (3Y)-17.0%
11.3%Avg. growth/yr (5Y)4.9%
Balance & size
2.71×Debt / equity1.38×
$12BMarket cap$31B
mixedGrowth qualityhealthy

Italgas SpA leads: 7 to 6 metric wins.

Dash = not meaningfully computable, for example with negative equity.

Quality in detail

The quality score, broken down into the same factor families as on the stock page, 0 to 100 per family.

Italgas SpAof which business quality 33 · market factors 64 Naturgy Energy Groupof which business quality 52 · market factors 67
ProfitabilityMargins and returns on capital today
43
45
Quality GrowthAre margins and returns improving?
50
37
CashflowEarnings quality: real cash, not paper profit
67
67
Fin. StrengthBalance sheet, leverage, solvency risk
18
30
InvestmentDisciplined investing over empire-building
1
71
Low VolatilityCalm price path (market factor)
86
94
MomentumPrice trend over the last 3–12 months (market factor)
50
50
52W MomentumDistance to the 52-week high (market factor)
63
64
Net IssuanceBuybacks instead of dilution
0
76

What the models say

The median fair value (base case) per model family, each in the currency of its trading venue. Green = above the current price, red = below.

Italgas SpA

DCF Models€6.58
Earnings-Based€10.60
Dividend Discount€6.04
Multiples€11.73
Asset-Based€2.52
Growth DCF€3.79
Economic Profit€3.85
Growth Earnings€15.26

14 of 24 models see the stock below the current price.

Naturgy Energy Group

DCF Models€32.33
Earnings-Based€26.55
Dividend Discount€23.41
Multiples€42.38
Asset-Based€6.76
Growth DCF€32.80
Economic Profit€20.95
Growth Earnings€33.88

9 of 24 models see the stock below the current price.

Scenario ranges

From our cautious bear case to the optimistic bull case. The white tick is the current price: left of fair value means room to run.

Italgas SpA
Bear €3.88Fair Value €6.89Bull €15.44
€9.05 = current price (white tick)
Naturgy Energy Group
Bear €21.46Fair Value €35.80Bull €49.13
€28.78 = current price (white tick)

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Ranked within their sector

Where each stock sits within its sector peer group. Band = middle 50% of peers, tick = median, dot = this stock.

Italgas SpA · Utilities

Quality score44 · below median
Fair value upside-24% · below median

Naturgy Energy Group · Utilities

Quality score61 · Top 25%
Fair value upside+24% · above median

Bottom line

As of Aug 8, 2026, Fair Value Calculator sees Naturgy Energy Group as the more attractively valued of the two: Italgas SpA trades at €9.05 versus a fair value of €6.89 (-24%), while Naturgy Energy Group trades at €28.78 versus €35.80 (+24%).

Naturgy Energy Group has the higher quality score (61/100).

See the full analysis →
Italgas SpA · Naturgy Energy Group

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A model-based valuation snapshot from 21 models. Values change with price and fundamentals; the date shown above applies.