Glossary

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EnR

Sources of energy that are renewed naturally: solar, wind, hydraulic, hydraulic, biomass, geothermal, tides.

Green energy

Actors & regulations

ENTSO-E

Association of electricity transmission system operators in Europe.

Electricity

Actors & regulations

EPEX SPOT

Short-term electricity exchange in Europe, for “spot” and day-ahead/intraday exchanges.

Energy market

Electricity

Markets & purchases

EPR

New generation European pressurized nuclear reactor.

Energy market

Production & resources

Erasure

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

Electricity

Energy market

Actors & regulations

ESG/CSRD reporting

Production of extra-financial reports in accordance with European requirements (CSRD, taxonomy).

Environment

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

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

Flame-fired power plants (CTF)

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

Electricity

Energy market

Actors & regulations

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The answers to your questions

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.

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

How is the glossary organized?

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

Is the glossary updated regularly?

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

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.

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 difference between €/MWh and kWh?

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