Glossary

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Flame-fired power plants (CTF)

Electricity generation installations operating by combustion of fossil fuels (coal, gas, oil, fuel oil).

Electricity

Energy market

Actors & regulations

Fondu

Type of electricity supply where price integrates both the cost of the energy consumed and the cost of its delivery, in a single and non-detailed form.

Budget

Energy market

Electricity

Markets & purchases

Forward price

Price agreed today for future delivery of electricity or gas, used in futures contracts to protect against price volatility m...

Gaz

Energy market

Electricity

Markets & purchases

Forward price (forward price)

Price fixed by contract for future electricity deliveries.

Energy market

Electricity

Markets & purchases

Fossil energy

Energy obtained from the combustion of non-renewable natural resources such as coal, oil or gas.

Gaz

Electricity

Green energy

Actors & regulations

Fossilometer

Indicator: share of fossil fuels in electricity production.

Electricity

Markets & purchases

GDF

Gaz France — former historical supplier of natural gas in France, which became GDF Suez in 2008 and then Engie in 2015. (simplified version).

Gaz

Actors & regulations

GO

Electronic certificate proving the renewable origin of a volume of electricity consumed.

Electricity

Green energy

Actors & regulations

GRD

Manager of public energy distribution networks (e.g. Enedis, GRDF) and their maintenance.

Gaz

Electricity

Actors & regulations

GRDF

Manager of the public gas distribution network in France; reads and operates Gazpar meters.

Gaz

Energy market

Actors & regulations

GRDF ADICT

Published gas data for smart meters: monthly readings sent to suppliers.

Gaz

Actors & regulations

GRTgaz

French high-pressure gas transport network operator, covering most of the country alongside Teréga.

Gaz

Actors & regulations

GTB/GTC

Technical management of buildings (GTB) and centralized supervision (GTC) to optimize comfort and energy.

Energy market

Consumption & sustainability

GWh

Unit of energy equal to one million kWh (1 GWh = 1,000,000 kWh).

Electricity

Gaz

Energy monitoring & management

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The answers to your questions

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.

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 updated regularly?

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

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.

Can I filter only tax-related terms?

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

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.