Clearing House · Glossary

A clearing house, in German usually called a Clearingstelle, is a central institution that records, secures and settles trades after they have been concluded and organises the fulfilment of the obligations arising from them. In electricity trading, the clearing house at exchanges generally acts as a central counterparty (CCP). European law describes it as a legal entity that interposes itself between the two contracting parties: it is the buyer to every seller and the seller to every buyer. A trade between two market participants thus becomes two separate contractual relationships with the CCP. Its main task is to manage the risk that a counterparty fails to pay or deliver when due, that is, counterparty default risk. The organisational process itself is described in the entry Clearing.

Where clearing houses operate in the electricity market

The function is particularly important in standardised markets, such as electricity futures and options on the forward market. There, companies hedge future prices, structure their procurement and marketing, or close out positions before delivery. More on this under futures and forwards. Such transactions are only possible on a large scale if everyone can trust that the other side remains solvent even in the event of sharp price movements. The clearing house bases this trust not on good intentions but on rules, collateral and ongoing valuation of positions. In Germany and large parts of Europe, European Commodity Clearing AG (ECC) in Leipzig is the most important example. It belongs to the EEX Group and, as central counterparty, performs clearing and settlement for trades on the group's trading venues and at partner exchanges, including the spot market. A subsidiary additionally enters the delivery process as a contracting party for physical deliveries of electricity, gas and emission allowances.

Collateral: initial margin, variation margin and margin calls

The clearing house's most important tool is collateral, the so-called margins. Market participants deposit cash or other eligible collateral (collateral). The initial margin is a buffer for possible price movements during the time that would be needed after a default to close out the positions. The variation margin settles the ongoing changes in value of open positions. When the electricity price rises or falls, the value of a contract shifts. The clearing house values this regularly and, where necessary, calls for additional funds. These demands for additional collateral are called margin calls.

In the EU, the market infrastructure regulation EMIR (Regulation (EU) No 648/2012) sets minimum standards for this. Margins must cover the risks until the positions are closed out and must absorb losses from at least 99 percent of value changes over an appropriate time horizon. The CCP must use models that take into account the risk characteristics of the cleared products and market liquidity. It must also call margins intraday, at least when defined thresholds are exceeded. In addition, when making adjustments it must consider possible procyclical effects. This means that sharply rising collateral requirements in a crisis can aggravate the crisis.

Delimitation: trading, price formation, settlement, grid operation

The clearing house does not set prices. Prices arise from bids, offers and trades in the market. Clearing is also not the same as trading: the exchange organises the marketplace, that is, the rules for orders, their matching and the publication of prices. The clearing house ensures that the trades result in reliable payment and delivery obligations, and secures them. Settlement refers to final fulfilment by payment, delivery or financial compensation. Clearing covers the steps before and in between: recording trades, maintaining and netting positions, valuation, managing collateral and preparing fulfilment. At clearing houses such as ECC, both functions are often in the same hands.

Financially settled electricity products end with payments. For physically settled products, a delivery obligation additionally arises, which is handled via schedules and a balancing group. The clearing house replaces neither the grid operator nor the responsibility for the balancing group. It secures the trading relationship, not the physical operation of the electricity grid. A clearing house is part of the financial market infrastructure. It does not generate a single megawatt hour of electricity and does not resolve grid congestion.

Which risks remain with market participants

The clearing house is often misunderstood as a guarantee against all trading risks. In fact, it mainly assumes default risk. Because it holds an offsetting sale on its books for every purchase, it bears no price risk in normal operation. Price risk remains with the market participants. Only when a member defaults is the CCP itself exposed to price fluctuations, namely until it has sold, transferred or closed out the defaulting member's positions. The initial margin and the further layers of protection are intended precisely for this period.

In energy trading, counterparty risk is very tangible. Electricity prices can move sharply within a short time, for example due to fuel prices, power plant outages, weather, demand or political intervention. A company that has sold electricity forward incurs high paper losses when prices rise, even if it can deliver physically later. It must then pay the variation margin immediately, while the proceeds from delivery arrive only later. In this case the problem lies not in a lack of profitability but in the timing of collateral and proceeds. Clearing makes this risk visible for liquidity, but through its collateral mechanics also partly amplifies it.

The 2022 energy price crisis clearly showed this. To relieve non-financial companies on regulated gas and electricity markets of the high liquidity pressure, the EU Commission temporarily expanded the eligible collateral for central counterparties in the EU, including unsecured bank guarantees and public guarantees. This emergency measure has since expired. With the EMIR reform "EMIR 3", according to ESMA, the possibility of using guarantees as collateral was opened permanently and to a wider group of clearing members, under strict conditions. The details are currently being worked out in technical standards.

The default waterfall

If a clearing member defaults, a statutorily defined sequence applies in the EU, the so-called default waterfall. This sequence is not a technical detail but governs who bears losses:

First, the margins of the defaulting member are used. The margins of non-defaulting members may not be used.
Next comes the defaulting member's contribution to the default fund.
Then the CCP uses a specifically allocated portion of its own capital, the so-called "skin in the game".
Only after that does it draw on the default fund contributions of the non-defaulting members and on further financial resources.

How stable a clearing house is therefore depends on its risk model, the quality of collateral, the size of the default fund and its crisis procedures. It is not guaranteed.

Access: clearing members and clients

A distinction must be made between clearing members and participants without direct access. A clearing member is directly connected to the clearing house and is liable to it, often also for clients. Smaller market participants frequently use banks or specialised service providers as clearing members, under EMIR also in multi-tier, indirect structures. This creates a further risk relationship: besides the clearing house, the chain between client, clearing member and trading venue must also function. For practical participation in the market, this access level is often as important as the exchange listing of a product.

Significance for utilities, generators and industry

For energy suppliers, municipal utilities, industrial companies and electricity generators, clearing is closely linked to hedging. A supplier hedges future delivery obligations to its customers using forward products. An operator of renewable plants limits its revenue risks. An industrial company makes its electricity costs more predictable. In all cases the following applies: the hedge must not only make economic sense but also remain financially sustainable when additional collateral is called. If a company cannot bear high margins, it may switch to bilateral contracts in OTC trading, which are not centrally cleared. There it again bears the counterparty risk itself.

Clearing is only indirectly related to security of supply. It depends primarily on sufficient generation, grids, flexibility and secure grid operation. However, if market participants hedge less or switch to short-term procurement because of high collateral requirements, the distribution of risks in the market changes. This can amplify price fluctuations and make planning more difficult, without anything actually being scarce in the grid.

Regulation and transparency

Legally, the clearing house sits at the interface between energy law and financial market law. Electricity is delivered physically over grids, but many forward products are financial instruments or organised close to the financial markets. In the EU, EMIR governs the authorisation, organisation and supervision of central counterparties, their requirements for margins and collateral, and reporting and clearing obligations for certain OTC derivatives. Whether a specific electricity product qualifies as a financial instrument depends on its design and on the trading venue. Physically settled spot transactions, for example, are not derivatives. Clearing does make positions and risks easier to capture, especially compared with purely bilateral trades. However, it does not make the market fully transparent. A cleared position reveals little about whether a company generates electricity, consumes it or merely hedges a price risk. Anyone who equates trading volume with actual electricity consumption overestimates the informative value of such data.

In summary, a clearing house is not an ancillary settlement function but a core institution of modern electricity markets. It enables trading of large volumes over long periods without each party having to assess the creditworthiness of every other party itself. It does not eliminate risks. It makes them more predictable, requires them to be collateralised and shifts part of the uncertainty: instead of a possible payment default, the question becomes whether market participants can provide the required collateral in time.

Sources

Zusammenfassung: Verordnung (EU) Nr. 648/2012 über OTC-Derivate, zentrale Gegenparteien und Transaktionsregister (EMIR) — Amt für Veröffentlichungen der EU (EUR-Lex); unbekannt (Verordnung vom 4. Juli 2012, in Kraft seit 16. August 2012). Abschnitte „Wichtige Eckpunkte“ und „Schlüsselbegriffe“
Art. 41 EMIR: Einschussforderungen — freiRecht.de (Wiedergabe der Verordnung (EU) Nr. 648/2012); unbekannt. Art. 41 Abs. 1 bis 3 EMIR
Art. 45 EMIR – Wasserfallprinzip — Lexparency (Wiedergabe der Verordnung (EU) Nr. 648/2012); unbekannt (Verordnung veröffentlicht am 25. Juli 2012). Art. 45 Abs. 1 bis 4 EMIR
European Commodity Clearing – About ECC – Company — European Commodity Clearing AG; unbekannt. Abschnitte „What ECC does“ und „ECC Lux S.àr.l.“
Consultation Paper – Guarantees as CCP Collateral and CCP Investment Policy (ESMA91-1505572268-4513) — European Securities and Markets Authority (ESMA); 2026-02-23. Einleitung zu Art. 46 EMIR und zur ausgelaufenen Sofortmaßnahme

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Edited by eCMS on 11.11.2026 17:24