Glossary

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C1

Very high consumption low voltage customer — Category grouping together customers connected to low voltage with very high annual consumption (communities, industries...

Electricity

Consumption & sustainability

C2

High power low voltage customer — customers connected to low voltage with significant consumption, higher than that of conventional SMEs...

Electricity

Consumption & sustainability

C3

Medium power low voltage customer — intermediate category, representing medium-sized companies with significant consumption...

Electricity

Production & resources

C4

Low-voltage, low-power client — Small business customers (e.g.

Electricity

Consumption & sustainability

C5

Residential low voltage customer or very low consumption — category bringing together individuals and very small structures (TPE) with low...

Electricity

Consumption & sustainability

CAC

Capacity to access the transport or distribution network, assigned to the user.

Electricity

Gaz

Energy market

Consumption & sustainability

Cal26

Abbreviation for “Calendar 2026”: expected average energy price for the calendar year 2026.

Energy market

Markets & purchases

Capacity auctions

Mechanism to guarantee the balance of energy supply and demand, especially in winter. (simplified version).

Energy market

Markets & purchases

Capacity market

French device aimed at guaranteeing the security of electrical supply.

Energy market

Consumption & sustainability

CAPEX

Business investment expenses to acquire or improve assets (power plants, networks, etc.)

Budget

Energy market

Production & resources

CAR

Annual Reference Consumption (estimate of the quantity of gas consumed over one year).

Gaz

Actors & regulations

Carbon Balance®

Method for accounting for greenhouse gas emissions from organizations, sites or products.

Environment

Consumption & sustainability

Carbon neutrality

Situation in which organizational greenhouse gas emissions are offset by equivalent reductions or removals.

Environment

Consumption & sustainability

CARD

When distribution contract (= enedis) is different supply contract (for example.

Electricity

Markets & purchases

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The answers to your questions

Where can I find the definition of an unknown acronym?

All the regulatory acronyms or techniques (e.g. 3RErN, PDL, ARENH) are explained in the glossary with their context.

How does the glossary help me with my decisions?

It makes it possible to understand market mechanisms, to anticipate costs and to better understand the energy players

Can I filter only tax-related terms?

Yes, just select the filter Budget to display concepts like TICFE, TICGN, or CTA.

What is the Sirenergies glossary for?

The glossary explains key energy terms, like €/MWh, TURPE or TICFE. It makes it easier to read invoices and understand markets.

What is the difference between €/MWh and kWh?

The €/MWh is a price unit used in wholesale markets, while kWh is the unit visible on your bills.

Is the glossary linked to the articles on the site?

Yes, each definition can be linked to educational articles or current events to deepen the subject.

Is the glossary updated regularly?

Yes, it is continuously enriched according to regulatory and market developments, to remain a reliable reference.

How is the glossary organized?

The terms are listed in alphabetical order and can be filtered by category (Budget, Energy Market, Green Energy, etc.).