Chemicals · Commodity Chemicals
Commodity Chemicals Sector Primer
A 42-page primer plus Excel valuation model on commodity chemical producers: chain margins, the cost curve, mid-cycle EBITDA and a year-by-year reversion DCF.
2026 Edition · data as of June 2026
- pages
- 42
- sections
- 15
- model sheets
- 12
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The full primer
£25 / ~$32
- 42 pages, 15 sections
- Worked examples and applied cases
- 2026 Edition, data as of June 2026
Excel model
Valuation template
£45 / ~$58
- 12 sheets (.xlsx)
- Runs the primer's worked valuations live
PDF + Excel model Best value
Both files together
£59 / ~$76
- The 42-page primer
- The 12-sheet Excel model
- £70 bought separately · £11 less
Complete Chemicals Library
All three Chemicals industries: three primers, three Excel models (Commodity Chemicals, Specialty Chemicals, and Industrial Gases).
Inside the primer
The 15-section contents, a worked valuation page, and the Excel dashboard.
Contents
- 01 How Commodity Chemicals Make Money
- 02 Company Types in Listed Commodity Chemicals
- 03 The Petrochemical Cycle
- 04 Segments and Sub-Markets
- 05 Revenue Drivers and a Generic Worked Example
- 06 Cost Structure: Chain Margins and the Cost Curve
- 07 Valuation Frameworks
- 08 Worked Example: Cyclical Reversion DCF, Ethane-Advantaged PE
- 09 Worked Example: Cyclical Reversion DCF, Methanol Economics
- 10 Applied Cases: Six Benchmark Companies
- 11 Key Metrics and Screening
- 12 Risk Factors and Red Flags
- 13 Real-World Benchmarks
- 14 Comparative Case Study and Business-Model Contrast
- 15 Glossary and Quick Reference Cheat Sheet
Worked examples and applied cases · 42 pages · 15 sections · 3 producer engines
The Excel model
Educational material for professional use. This primer and its model are not investment advice or a recommendation to buy or sell any security, and they are not personalised. Worked valuations use illustrative calibrations, not fair-value estimates for any company.
A commodity chemical producer cannot set its own price. It earns the spread between what its product sells for and what its feedstock costs, and that spread swings with a capacity cycle that runs for years. Valuing the latest quarter values a point in the cycle, not the plant. The work is to rebuild earnings at mid-cycle spreads, the average between boom and bust, and then decide how long the recovery takes. That is why a year-by-year model does the valuing and a multiple only screens.
Commodity chemicals valuation benchmarks by cycle stage
Where the cycle sits decides how a trailing multiple misleads. The primer anchors each stage on the integrated polyethylene chain margin, the earnings engine for olefins producers.
| Cycle stage | Integrated PE margin | EBITDA margin | How to read the multiple |
|---|---|---|---|
| Strong cycle | Near the $830/t 2013-22 average | 18-22% | Trailing multiple looks cheap; normalise earnings down |
| Mid-cycle | $650/t (illustrative mark) | 12-20% | EV/EBITDA of 6-9x on normalised EBITDA, 7.5x as the working basis |
| Trough / oversupply | $580/t (FY2025 industry) | Below 12% | Trailing multiple looks expensive; normalise earnings up |
| Recovery | Reverting towards mid-cycle | Rising | Argue the path of the spread; utilisation rises before price |
The primer discounts at a 9% nominal rate. A producer moves up the range with a cost-advantaged feedstock: ethane gives 80-84% ethylene yield against 29-34% for naphtha, so US ethane crackers idle later in a downturn and recover sooner. It moves down with high-cost naphtha capacity, a thin chlorine-caustic balance on the vinyl chain, or leverage. Net debt below 2.0x mid-cycle EBITDA is conservative and above 4.0x stretched. For comparison, Damodaran's basic chemicals aggregate stood at about 8.6x EV/EBITDA in January 2026.
Worked example: a commodity chemicals reversion DCF
Take a hypothetical polyethylene producer with 5.0 Mt/yr of capacity, $200/t of conversion cost, $5,625M of net debt and 700M shares. The chain margin recovers from a $450/t trough to the $650/t mark over four years, and utilisation from 80% to 88%, so mid-cycle EBITDA is 5.0 x 88% x ($650 - $200) = $1,980M. Free cash flow comes after 21% tax, sustaining capex and working capital, and is discounted at 9%.
| Step | Amount |
|---|---|
| PV of free cash flow, years 1-10 | $5,547M |
| Plus PV of terminal value (mid-cycle EBITDA $1,980M x 7.5) | +$6,273M |
| Enterprise value | $11,820M |
| Less net debt | -$5,625M |
| Equity value | $6,195M |
| Value per share (700M shares) | $8.85 |
The multiple shortcut gives more. At 7.5x, mid-cycle EBITDA of $1,980M is worth $14,850M, or $13.18 a share after debt, $4.33 above the DCF. Only $1.35 of that gap is the cost of the weak recovery years; start the same DCF at mid-cycle and it gives $10.20. The other $2.98 is the multiple paying for cash flow the plant does not earn: at mid-cycle it returns 7.2% on $14,000M of invested capital, below the 9% discount rate, yet 7.5x values it at 1.06 times that capital.
The primer shows the ten-year schedule, grids across spread, discount rate and multiple, and the same method on a methanol producer and a vinyl producer. The Excel model does the same with your own plants.
Which commodity chemicals valuation method fits which company
| Company type | Primary method | Check with | Why |
|---|---|---|---|
| Integrated olefins and polyethylene | Reversion DCF on chain margin times tonnes | Mid-cycle EV/EBITDA, 6-9x | Earnings move in line with margin and volume |
| PVC and chlor-alkali | Reversion DCF on unit margin plus the chlorine-caustic balance | Net debt on mid-cycle EBITDA | Resin price alone misses the caustic leg |
| Pure-play methanol | Reversion DCF on the realised average price | Posted reference price, as context only | Customers pay less than the posted price |
| Multi-chain acetyls | Segment-by-segment normalisation and sum of parts | Segment EBITDA margins | Commodity and specialty legs earn differently |
What the full primer adds
The primer builds the tools in order: how the spread business makes money, the listed company types, the petrochemical cycle, then revenue drivers, chain margins and the cost curve. Two worked chapters value hypothetical producers from first input to equity value: an ethane-advantaged polyethylene producer and a methanol producer, each with spread and utilisation recovering from trough to mid-cycle, plus a PVC and chlor-alkali margin build. Applied cases on six listed producers follow, then screening on mid-cycle leverage, the red flags and a business-model comparison.
Free guides cover the individual pieces: ethylene and polyethylene spreads, ethane against naphtha feedstock, steam cracker yields by feedstock, petrochemical cost curves, mid-cycle EBITDA, reported against adjusted EBITDA and reading the petrochemical cycle. Research profiles for Dow, LyondellBasell, Westlake, Olin, Methanex and Celanese apply the same method to filed results. The companion Excel model spans twelve sheets: three producer engines (polyethylene, methanol, and chlor-alkali and PVC) that each run a ten-year reversion DCF, a valuation summary against the multiple screen, cycle scenarios, a cost-curve position, a leverage screen and a live sensitivity grid.
Sheets: Quick Start, Instructions, Assumptions, Producer 1, Producer 2, Producer 3, Valuation Summary, Cycle Scenarios, Cost Curve, Leverage Screen, Sensitivity, Dashboard.
Commodity chemicals valuation: free guides
Commodity chemicals valuation FAQ
- How do you value a commodity chemical company?
- Rebuild earnings at mid-cycle first: capacity times utilisation times the chain margin less conversion cost. Then run a reversion DCF, in which spread and utilisation climb from today's level back to mid-cycle, sustaining capex and working capital are funded year by year, and the terminal value is mid-cycle EBITDA times an exit multiple. The primer discounts at 9% and uses a through-cycle EV/EBITDA multiple only as a cross-check.
- What EV/EBITDA multiple do chemical companies trade on?
- The primer's illustrative through-cycle band for commodity producers is 6-9x normalised mid-cycle EBITDA, with 7.5x as the working basis; Damodaran's basic chemicals aggregate was about 8.6x in January 2026. The band only works on a mid-cycle denominator. The same plant valued at one enterprise value reads 11.8x on trough EBITDA, 6.0x at mid-cycle and 3.6x at the peak.
- What is mid-cycle EBITDA for a chemical producer?
- Earnings rebuilt at a normal spread and normal utilisation. For integrated polyethylene the primer uses an illustrative chain margin of $650/t, which sits between the FY2025 industry trough of $580/t and the 2013-22 average of $830/t. A 5.0 Mt/yr producer at 88% utilisation and $200/t of conversion cost earns $1,980M on that basis.
- How much debt can a commodity chemical producer carry?
- Measure net debt against mid-cycle EBITDA, never a trough year: below 2.0x is conservative, 2.0-4.0x normal and above 4.0x stretched. A trough denominator can more than triple the ratio on the same debt. Test the balance sheet against the next trough as well as against mid-cycle earnings.
- Why do chemical stocks look cheapest at the top of the cycle?
- Because trailing EBITDA is inflated at a peak, so the multiple on it looks low, and depressed at a trough, so the multiple looks high. The plants have not changed; only the year of earnings under the ratio has. Rebuilding EBITDA at mid-cycle spreads removes the distortion before any comparison.
See this methodology applied to a real company:
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