Blog Posts on Frequency Control

mFRR (manual Frequency Restoration Reserve)

What is mFRR (manual Frequency Restoration Reserve / R3)? Definition mFRR is the manual Frequency Restoration Reserve that helps to stabilize the frequency of the electricity grid. In most countries the TSO (Transmission System Operator) is responsible for its procurement and activation. The mFRR (also R3 or tertiary reserve) helps to restore the required grid More… (Published: 14. April 2021 by Marie Volkert)
Read entire post

Opening the aFRR Market in Belgium – A unique and innovative 2 step auction model

When Next Kraftwerke expanded its operations to Belgium in 2014, one of its goals was to convince the transmission grid operator Elia to open its automatic Frequency Restoration Reserve (aFRR) market for all technologies. aFRR, also known as secondary reserve, has historically been provided by a handful of gas fired power plants operated by two or three companies. (Published: 10. March 2021 by Elias, Paul)
Read entire post

The Corona crisis and the electricity market

The COVID-19 pandemic shakes up the world - but the power grid in Europe remains stable. What ensures this stability and how do the electricity markets in Germany and Europe react to the situation? (Published: 31. March 2020 by Christian)
Read entire post

Ancillary Services

What are ancillary services? Definition Ancillary services ensure a proper operation of the power grid . The grid operators (transmission grid operators and distribution grid operators) are responsible for ancillary services. To ensure a reliable power supply, it is necessary that frequency, voltage, and power load remain within certain limits . This does not happen More… (Published: 27. November 2019 by Nils Quak)
Read entire post

Merit order

What does merit order mean? Definition In the energy industry, the term ‘merit order’ describes the sequence in which power plants are designated to deliver power, with the aim of economically optimizing the electricity supply. The merit order is based on the lowest marginal costs. These are incurred by a power plant and refer to More… (Published: 14. February 2019 by Nils Quak)
Read entire post

Utility frequency

What does utility frequency mean? Definition It is well-know that household alternating current (AC) in Germany and Europe has a frequency of 50 Hertz (Hz), while other parts of the world run on 60 Hz. What is less known is that this utility frequency (also known as mains frequency or grid frequency) also provides information about the ratio of electricity generation More… (Published: 13. February 2019 by Nils Quak)
Read entire post