Glossary

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Energy mix

Distribution of different energy sources (electricity, gas, renewable, renewable, nuclear, fossil) in total country consumption.

Electricity

Gaz

Green energy

Energy market

Actors & regulations

Energy sobriety

An approach aimed at reducing consumption through more efficient and better managed uses.

Electricity

Gaz

Green energy

Environment

Actors & regulations

Energy trajectories

Monitoring site or organization progress in relation to regulatory objectives (tertiary decree, CSRD, net zero).

Environment

Energy market

Actors & regulations

Energy transition

Transition from a fossil system to a more efficient and renewable mix, with lower emissions.

Electricity

Gaz

Green energy

Environment

Actors & regulations

Engie

French energy group, formerly GDF then GDF Suez.

Gaz

Electricity

Green energy

Actors & regulations

Erasure

Voluntary and temporary reduction in electricity consumption by customers, requested during periods of high tension on the network.

Electricity

Energy market

Actors & regulations

Estimated bill

Invoice calculated on the basis of estimated consumption and not measured on the meter.

Energy market

Electricity

Markets & purchases

European taxonomy

Classification defining economic activities considered sustainable from the point of view of green finance.

Environment

Energy market

Actors & regulations

Excretion

Mechanism applied when ARENH (Regulated Access to Historic Nuclear Electricity) requests exceed the legal ceiling of 100 TWh.

Energy market

Electricity

Markets & purchases

Expansion

Statistical effect to smooth out the variability of the production of intermittent renewable energies (wind, solar).

Green energy

Actors & regulations

FTA

TURPE option defining the delivery price structure according to the type of meter and time classes.

Energy market

Electricity

Actors & regulations

Fast and additional reservations

Means that can be quickly mobilized to maintain the balance of the electrical system.

Electricity

Markets & purchases

Financial guarantees

Devices required by energy suppliers to secure contracts, including for example bank guarantee, parent company guarantee or deposit...

Energy market

Budget

Markets & purchases

Fixed price contract

Supply contract whose energy price is fixed for a given period of time.

Energy market

Budget

Markets & purchases

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The answers to your questions

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.).

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.

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.

Can I filter only tax-related terms?

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

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

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.

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.