Glossary

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CSPE

Contribution to the Public Electricity Service — Tax integrated into the electricity bill.

Electricity

Budget

Markets & purchases

CTA

Fixed tax applied to electricity and natural gas subscriptions.

Electricity

Markets & purchases

CU

Price structure adapted to occasional or irregular uses, unlike Long Use (LU).

Energy market

Electricity

Actors & regulations

CU/LU

Indicators of network use: capacity actually used and length of network mobilized.

Energy market

Markets & purchases

Day Ahead

Spot market where electricity or gas transactions that can be delivered the next day are carried out.

Gaz

Energy market

Electricity

Markets & purchases

Day PP1

Peak Production Day 1 — Signal issued by RTE (Electricity Transport Network) during situations of high national consumption, asking major consumers to...

Electricity

Actors & regulations

DDF

Supply request — contractual or administrative document used to initiate or modify the supply of energy (electricity or gas).

Gaz

Electricity

Markets & purchases

Decarbonization rate

Share of energy consumption that does not emit greenhouse gases.

Gaz

Consumption & sustainability

Decarbonized

Production or consumption of energy that emits no or few greenhouse gases.

Gaz

Consumption & sustainability

Decennial visit

Inspection carried out every 10 years on nuclear installations.

Energy market

Production & resources

DFF

End date — term used in contracts to indicate end date of energy supply contract.

Energy market

Markets & purchases

Discrepancies

Discrepancies between actual and expected consumption of the balance manager.

Energy market

Consumption & sustainability

Distribution network

Managed by Enedis, the electricity distribution network serves end customers up to their meters.

Electricity

Actors & regulations

DPE

Regulatory diagnosis that classifies the energy performance of a building and its CO₂ emissions.

Energy market

Actors & regulations

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The answers to your questions

How is the glossary organized?

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

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

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.

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.

Is the glossary updated regularly?

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

Can I filter only tax-related terms?

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

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 Sirenergies glossary for?

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