Definitions & abbreviations


In April 2013, the Consumer Authority, the Dutch Competition Authority and the Independent Post and Telecommunications Authority joined forces to create a new regulator: the Authority for Consumers & Markets (ACM). As part of its remit, the ACM oversees compliance with the Electricity Act 1998 and the Gas Act.


Attribution of the impact relative to other entities contributing to the impact (part of the value and impact model).

Community battery

A local collective solution for solar overproduction.

Cable pooling

The use of shared cables for wind and solar power feed in.

Caidi (customer average interruption duration index)

The average duration of individual power outages.

CBL (cross border lease)

A cross-border lease is a structured finance transaction by virtue of which a business sells the user rights of certain non-current assets to a foreign company, only to lease these assets back.


Carbon dioxide. This is mainly released during the burning of fossil fuels such as natural gas and coal and contributes to the greenhouse effect.

CO2 equivalent

The effect of greenhouse gases other than CO2 converted into CO2 values.

Committee of Shareholders

The Committee of Shareholders as referred to in section 158 (10) Book 2 of the Netherlands Civil Code, if this has been appointed by the General Meeting of Shareholders.

Corporate governance

The relationships between the Management Board, the Supervisory Board and the General Meeting of Shareholders. The basic principles of corporate governance are good entrepreneurship (integrity and transparency of management) and effective supervision over this (including accountability).


An international model for risk management.

Sustainable electricity equivalent

Unit of account for sustainably generated heating. The heating that is generated from sustainable sources (solar boilers, heat pumps and landfill gas projects) is converted into kWh sustainable electricity equivalents to enable aggregation of sustainably generated electricity. This is done by first calculating the CO2 emissions that are avoided with the sustainable heating and then calculating the amount of kWh sustainably generated electricity with which the same emission reduction would have been achieved assuming 0.53 kg of avoided CO2 emissions per kWh.

Energy transition

The transition from energy generation from fossil fuels to sustainable energy generation (e.g. from sun, wind or water).

FTE (full-time equivalent)

Equivalent of the number of employees with a full working week.

Guarantee of Origin

A Guarantee of Origin Certificate shows that electricity has been generated by a wind, hydro, solar or biomass installation.

DC (direct current) network

A network allowing DC power from renewables to be used directly without the need for an inverter to produce alternating current.

Geothermal energy

Energy derived from the heat found in the earth’s crust.

Regulated domain

The activities of the network operator which arise from the tasks that are the exclusive preserve of the network operator and for which maximum tariffs are set by the ACM. This includes:

  • the construction, maintenance, renewal and operation of connections to the electricity network with a load value up to 10 MVA and to the gas network;

  • the construction, maintenance, renewal and operation of electricity and gas networks;

  • the transportation of gas and electricity;

  • the metering services for small consumers

  • the effective assurance of the safety and reliability of the networks;

  • the promotion of the safe use of equipment and installations that consume electricity and gas;

  • the facilitation of the free market to enable customers to switch to another energy supplier, among other things.

Green bond

A debt instrument used exclusively to finance new and existing environmentally sound projects.

GRI (Global Reporting Initiative)

Global organisation that issues guidelines for CSR reporting.

Grid defection

The risk to energy utilities that the increasing availability of affordable independent power generation and storage capacity will allow growing numbers of customers to go off grid (defect), creating a vicious circle by undermining the economics and continued viability of grid operation to the financial and technical detriment of remaining grid users.


(In the context of the value and impact model) The effects of the actual outcome compared with the effects of the predetermined ‘counterfactual’ or reference scenario.

Smart grids

A ‘smart grid’ refers to electricity distribution networks in which ICT and sensor technology systems are used in substations and medium voltage transformer stations. The capacity has also been increased by raising the voltage from 10 kV to 20 kV.

LTIF (Lost Time Injury Frequency)

Number of accidents leading to absenteeism times a million divided by the number of worked hours.


The ability of various autonomous, heterogeneous systems to communicate and interact with each other.


The supply of electricity fed into the electricity grid from power generating sources.

Supply chain responsibility

A situation in which a company assumes responsibility for the entire chain involved in its activities and for the impact which these activities have in social, ecological and economic terms and renders account accordingly, including engaging in a dialogue with stakeholders. The whole process is result-driven.

Customer satisfaction

A measure of how happy customers are with the service they receive. The process of measuring customer satisfaction is based on a scoring system.

Security of supply

The ability of customers to rely on the uninterrupted supply of electricity, gas and heat, as well as uninterrupted feed-in to the grid.

m3 of gas

A cubic metre (1,000 litres) of natural gas. The average natural gas consumption per household is about 1,800 m3 per year.


A gaseous hydrocarbon, chief component of natural gas.


The local network of energy sources that is able to function independently of the grid.

Net debt

The sum of long- and short-term interest-bearing liabilities less cash and cash equivalents and investments.

Net investments

Capital expenditures less contributions received from third parties.

Grid losses

There are two components to grid losses or network losses: technical losses and administrative losses. Technical grid losses refers to the electrical energy that is dissipated in overcoming the inherent resistance of cables, transformers and other components in the network. Administrative grid losses refers to losses due to fraud and theft of electricity and loss of potential income due to empty properties.


Nitrogen oxides, gases produced during the burning of fuels. These gases cause acid rain and smog.


The NTA (Netherlands Technical Agreement) 8120 comprises standards for the assurance of the safety of employees and the public, the protection of industrial and built-up areas and nature, the security of transport and distribution, and the efficient and optimal management of grids.

Zero energy homes

Homes that produce as much energy as they consume.


An installation in the high-voltage electricity network either linking two or more high-voltage networks or forming connections to the high-voltage network.


The effects of an activity – within the context of the value and impact model – over which Alliander has some control.

PCB (polychlorinated biphenyl)

Chemical name for an organic chlorine compound with strong heat-resistant properties.

Sufferance tax

A levy charged by local authorities for the assets of utilities running either overhead or belowground across public land or water as well as surface assets.


With respect to public utilities, the process whereby the government sets the maximum rates that network operators are permitted to charge for their services.

Remuneration Report

The Remuneration Report of the Supervisory Board concerning the remuneration policy of Alliander, as drawn up by the Selection, Appointment and Remuneration Committee of the Supervisory Board.


The effects of the output – within the context of the value and impact model – translated to system level.

Saidi (System average interruption duration index)

Average interruption duration per customer.

Saifi (System average interruption frequency index)

Interruption frequency per customer


A sensor-based control system for the faster localisation and resolution of interruptions in the grid.

Sustainable Development Goals (SDGs)

The latest United Nations goals for sustainable development of the world in the period 2015–2030.

SF6 (Sulphur hexafluoride)

An inert gas that is 5.1 times heavier than air and has a CO2 equivalent of 22,800. SF6 has good electrical insulating properties and is therefore frequently applied in electrical engineering, such as in medium-voltage and high-voltage units. In the case of combustion (e.g. due to an arc), toxic waste products such as S2F10 occur. Also, in the case of major leakages, there is the risk of SF6 displacing oxygen which can lead to suffocation.

Smart meter

A smart meter enables remote reading of electricity and gas meters by network operators to obtain information on consumption and status. In addition, a smart meter can execute remote instructions. The communication with the meter takes place via the cable network (power line communication –PLC) or via GPRS.

Solvency ratio

The solvency ratio is obtained by dividing total equity including the profit for the period by total assets less the expected dividend distribution for the current year and deferred income.


The legal split-off on 30 June 2009 of N.V. Nuon Energy from parent company n.v. Nuon (currently Alliander N.V.), as referred to in sections 2:334a (1) and (3) of the Netherlands Civil Code. This legal split-off marked the finalisation of the unbundling prescribed by the Dutch Independent Network Operation Act between, on the one hand, the production and supply company and, on the other hand, the network company of the Nuon group, as was already organisationally implemented on 1 July 2008.


Stakeholders are individuals and groups who have any form of interest in Alliander such as employees, shareholders, customers, financiers, suppliers and public authorities.


The extent to which things can be clearly seen through something – specifically the provision of a clear view of a company’s activities.

Phasing-out of gas

The gradual discontinuation of a mains gas supply and use of gas as a fuel.


The effects of the result – within the value and impact model – on people and/or ecosystems.

VCA (Veiligheid Checklist Aannemers)

A certifiable checklist for contractors by which they can demonstrate that they are complying with health and safety standards.

VET (Voortgang Energietransitie)

Proposed Energy Transition Advancement legislation aimed at supporting and accelerating the energy transition by amending the regulations governing electricity and gas networks. The changes are partly necessary in view of the increase in intermittent power supplies (solar, wind) and feed-in from decentralised sources, which demand high standards of reliability and affordability of the systems.

Deregulated domain

The activities that are carried out in competition and/or arise from the statutory tasks and are offered at the customer’s request. This includes the construction, maintenance, renewal and management of connections to the electricity network with a load of 10 MVA and above for specific customer groups, including public transport and public lighting.

Free cash flow

Cash flow from operating activities less net investments in non-current assets.

Working capital

Inventories plus trade receivables and other receivables, less short-term non-interest-bearing debt and other liabilities.