Cross-Commodity Hedging (Gas–Electricity–Carbon)

1. Introduction

Cross-commodity hedging means using financial or physical contracts in different but economically connected commodity markets to reduce price risk.

In the energy sector, gas, electricity and carbon prices are closely connected. A gas-fired electricity generator may therefore face three major risks:

the price of natural gas may increase;

the price of electricity may decrease; and

the price of carbon allowances may increase.

A generator can use derivatives and other contracts to manage these risks together.

The relationship can be simplified as:

Gas price risk + Electricity price risk + Carbon price risk → Cross-commodity hedging

This is particularly important for integrated European energy markets because REMIT expressly recognises that electricity and gas markets and their derivatives are interconnected, and that manipulation can occur across electricity, gas, financial, commodity and emissions markets. (Eur-Lex)

2. Meaning of Hedging

Hedging is a risk-management technique.

It does not normally aim to eliminate all price changes. Instead, its purpose is to reduce the financial effect of unfavourable price movements.

For example, a gas-fired generator expects to sell electricity in three months.

Its expected position is:

Electricity revenue

minus

Gas fuel cost

minus

Carbon allowance cost

equals

Generation margin

If gas or carbon prices rise while electricity prices remain unchanged, the generator's margin may fall.

The generator can therefore enter into contracts designed to protect against these risks.

3. Why Gas, Electricity and Carbon Are Hedged Together

These markets are economically linked.

Gas

Gas is an important input for gas-fired power plants.

Electricity

Electricity is the output sold by the generator.

Carbon

A covered fossil-fuel generator may need emissions allowances for its greenhouse-gas emissions.

Therefore:

Gas price ↑

→ generation cost ↑

Carbon price ↑

→ generation cost ↑

Electricity price ↓

→ generation revenue ↓

The combined effect can significantly reduce the generator's margin.

4. Clean Spark Spread

The clean spark spread is an important concept in cross-commodity hedging.

In simple terms:

Electricity revenue − Gas cost − Carbon cost = Clean spark spread

The actual calculation also considers the efficiency of the power plant.

For example:

electricity price = €100/MWh;

gas cost = €50/MWh equivalent;

carbon cost = €20/MWh.

The remaining margin is approximately:

€100 − €50 − €20 = €30/MWh

A generator can hedge the different components of this margin separately.

5. Gas Hedging

A gas-fired generator may purchase gas futures or forwards to lock in or reduce exposure to future gas prices.

For example:

Generator expects to need gas in December

↓

Buys gas forward

↓

Future gas price increases

↓

Higher physical gas cost is partly offset by the hedge

The precise financial result depends upon the contract and settlement mechanism.

Gas hedging can therefore provide greater certainty about future generation costs.

6. Electricity Hedging

The same generator can hedge the price at which it expects to sell electricity.

It may use:

electricity forwards;

futures;

swaps;

options; or

power purchase arrangements.

For example:

Expected electricity production = 500 MWh

↓

Electricity forward contract

↓

Future electricity price becomes fixed or partly protected

This reduces exposure to adverse electricity-price movements.

7. Carbon Hedging

Carbon costs can also be hedged.

An electricity generator subject to the EU ETS may need to acquire allowances to cover emissions.

It may therefore use:

carbon allowance purchases;

futures;

forwards; or

other permitted financial instruments.

If carbon prices rise, the cost of emissions compliance increases.

A carbon hedge can reduce the uncertainty surrounding that cost.

The EU ETS is designed to reduce greenhouse-gas emissions while maintaining the integrity of the internal market. Recent CJEU case law has also addressed the legal treatment of emissions allowances and the economic effects of national measures affecting them. (curia)

8. Combined Cross-Commodity Hedge

The important feature is that the three hedges can be considered together.

For a gas-fired generator:

Electricity forward

protects expected revenue.

Gas forward

protects fuel cost.

Carbon hedge

protects emissions cost.

Together:

Electricity price hedge + Gas price hedge + Carbon price hedge

↓

More predictable generation margin

This is the central concept of cross-commodity hedging.

9. Legal Framework

Cross-commodity hedging is governed by several overlapping legal frameworks.

REMIT

Regulation (EU) No 1227/2011 on wholesale energy-market integrity and transparency applies to wholesale electricity and natural-gas markets and related derivatives.

REMIT specifically recognises that derivatives and commodity trading are used together and that manipulation can occur between electricity and gas markets and across financial and commodity markets, including emissions markets. (Eur-Lex)

EMIR

The European Market Infrastructure Regulation establishes requirements concerning derivatives, including:

reporting;

clearing;

risk-management procedures;

central counterparties; and

trade repositories.

Depending on the instrument and parties involved, energy derivatives can therefore fall within financial-market regulation.

EU ETS

Carbon allowances are governed by the EU emissions-trading framework.

The legal treatment of allowances and their trading therefore interacts with the wider financial and energy markets.

10. Physical and Financial Hedging

Cross-commodity hedging can involve both physical and financial transactions.

Physical hedge

A company enters into a physical gas or electricity supply contract.

Financial hedge

A company enters into a derivative whose value changes according to the underlying commodity price.

For example:

Physical gas purchase + financial gas hedge

can provide protection against adverse gas-price movements.

Similarly:

Physical electricity sale + electricity derivative

can reduce exposure to electricity-price volatility.

11. Basis Risk

One major problem is basis risk.

A hedge may not perfectly match the actual exposure.

For example:

Physical gas price = €60

but

Hedging contract price = €65

The difference creates residual risk.

Basis risk can arise because of differences in:

geographical location;

delivery period;

contract specifications;

market prices;

benchmark prices; and

liquidity.

Cross-commodity hedging therefore reduces risk but does not necessarily eliminate it.

12. Cross-Market Manipulation

Hedging must be distinguished from market manipulation.

A legitimate hedge seeks to reduce genuine commercial exposure.

However, REMIT recognises that market manipulation can involve combinations of transactions across electricity, gas and financial or commodity markets. (Eur-Lex)

For example, a trader should not create an artificial position in one commodity merely to distort the price of another commodity.

This is why regulators need to analyse trading activity across markets rather than looking at electricity, gas and carbon separately.

13. ACER and Market Monitoring

ACER plays an important role in monitoring wholesale electricity and gas markets.

The EU legislative framework recognises that electricity and gas markets are strongly interconnected and that manipulation can have cross-border effects.

The Commission has specifically noted that electricity and gas and their derivatives may be traded simultaneously across different Member States, meaning that effective detection of combined manipulation requires centralised monitoring and large-scale transaction data. (Eur-Lex)

This is highly relevant to cross-commodity hedging because regulators need to distinguish legitimate risk management from abusive trading strategies.

14. Relevant Case Law

Uniper Global Commodities v ACER, Case T-96/23

The General Court's 25 June 2025 judgment concerned an ACER decision amending the methodology for pricing balancing energy and cross-zonal capacity, including a temporary price limit on balancing-energy transactions. The Court held the action inadmissible because of issues including standing before the ACER Board of Appeal. (Eur-Lex)

Relevance

The case illustrates how energy-market pricing rules and regulatory methodologies can directly affect commercial risk for major energy traders.

Although it was not itself a gas-electricity-carbon hedging case, it is relevant to the regulatory environment in which energy companies manage interconnected commodity and electricity-price risks.

RWE Supply & Trading v ACER, Case T-95/23

This 2025 General Court case also concerned ACER's balancing-energy pricing methodology and temporary price limits. (Eur-Lex)

Relevance

It demonstrates that regulatory decisions affecting electricity-market pricing can have important consequences for companies that manage energy-price exposure through trading and hedging activities.

TransnetBW v ACER, Case T-476/21

The General Court considered ACER's methodology concerning the allocation of costs associated with redispatching and countertrading in the Core electricity region. (Eur-Lex)

Relevance

The case demonstrates how cross-border network conditions can affect electricity-market costs. Such network-related risks are relevant when an energy company calculates and hedges the expected margin between electricity revenues and gas and carbon costs.

Nordzucker, Case C-148/14

The CJEU considered the EU ETS rules concerning the obligation to surrender emission allowances and the applicable penalties. (curia)

Relevance

For electricity generators, carbon compliance creates a real economic exposure. Understanding the legal obligation to surrender allowances is therefore important when managing carbon-related financial risk.

15. Importance of REMIT for Hedging

REMIT does not prohibit genuine hedging.

Indeed, its framework recognises that derivatives and physical commodity transactions operate together in wholesale energy markets. (Eur-Lex)

However, a company engaging in hedging must ensure that its transactions do not involve:

insider trading;

false orders;

misleading information;

artificial price signals;

manipulation of reference prices; or

attempts to distort availability or prices.

Therefore:

Hedging = legitimate risk management

but

Hedging cannot be used as a disguise for market manipulation.

16. Cross-Border Dimension

Cross-commodity hedging becomes more complicated when transactions occur across borders.

A single energy company might:

Buy gas in Country A

↓

Generate electricity in Country B

↓

Sell electricity in Country C

↓

Hedge carbon exposure through EU allowance markets

Different regulators and legal regimes may therefore become relevant.

This requires coordination between:

energy regulators;

financial regulators;

carbon-market authorities;

ACER;

national authorities; and

market operators.

17. Main Legal Challenges

1. Regulatory Overlap

REMIT, EMIR and EU ETS rules can apply to connected transactions.

2. Market Abuse

Cross-market strategies can potentially manipulate prices.

3. Basis Risk

The hedge may not perfectly match the underlying exposure.

4. Collateral Requirements

Derivative contracts may create liquidity and collateral obligations.

5. Cross-Border Supervision

Several authorities may have jurisdiction.

6. Carbon-Market Volatility

Changes in carbon prices affect fossil-fuel generation costs.

7. Data and Reporting

Regulators require information about transactions and positions.

18. Conclusion

Cross-commodity hedging in gas, electricity and carbon markets is a sophisticated form of energy-risk management. It recognises that a generator's financial position depends simultaneously on:

Electricity revenue

− Gas fuel cost

− Carbon compliance cost

= Generation margin

Companies can therefore use electricity, gas and carbon contracts together to reduce uncertainty surrounding future margins.

The legal framework is particularly important because these markets are economically interconnected. REMIT expressly recognises that market manipulation may occur across electricity, gas, financial and commodity markets, including emissions markets, making cross-market monitoring essential. (Eur-Lex)

The cases Uniper Global Commodities v ACER, RWE Supply & Trading v ACER, TransnetBW v ACER, and Nordzucker illustrate different aspects of the legal environment surrounding energy pricing, cross-border electricity regulation and carbon compliance. (Eur-Lex)

For PhD-level energy law, the central issue is how the legal framework can permit legitimate cross-commodity risk management while ensuring transparency, preventing market manipulation, coordinating energy and financial regulation, and maintaining the integrity of interconnected gas, electricity and carbon markets.