Most important reporting criteria, principles and assumptions

Main principles and assumptions


Impacts that are caused by multiple players in the supply chain are attributed to Alliander on the basis of its gross added value in the supply chain. The gross added value is calculated as revenue less goods and services used in production, valued at purchase price.

Impacts that Alliander realises independently are entirely attributed to Alliander.

For comparison purposes, the attribution value from 2017 is also applied for the 2016 impact.

Financial capital

The financial impacts are viewed from the perspective of cash flows to and from society: cash outflows from Alliander are positive impacts for society; Alliander's cash inflows are negative impacts for society.

Manufactured capital

The wealth value of energy transmission is calculated on the basis of the consumer surplus. This is the extra value that customers are in theory prepared to pay on top of the regulated price for a service or product. The consumer surplus is currently the most common method for determining economic value, both for liberalised and regulated markets. The consumer surplus relates to all price elements in the energy value chain, including the taxes and prices for the supply and transmission of energy. The amounts presented as manufactured capital indicate the economic part of the energy value chain that is attributable to Alliander. The average impact of gas and power failures for the Netherlands is included in this estimate as the price elasticity is based on the actual demand for energy (including failures). The specific impact of gas and electricity failures was relatively limited for Alliander in 2016 and was therefore excluded.

In the adopted economic model, price elasticity assumptions were made. The gas and electricity price elasticity curve is assumed to be linear. This produces a conservative estimate of the consumer surplus, which is visualised in the figure below.

The slope of the curve that has an impact on the consumer surplus was determined on the basis of a study by CE Delft (2012).

In order to avoid double counting, the contribution of energy transmission to the wealth of business customers consists exclusively of the revenue component, without adding the producer surplus of customers.

Natural capital

Alliander is partly responsible for the CO2 emissions from the quantities of electricity and gas transported through its network. The impact includes the measurement of the CO2 emissions associated with the direct operations and those of the chain. Emissions in the chain are attributed to Alliander on the basis of gross added value.

Alliander's electricity mix ratio (comprising oil, gas coal and nuclear power) is assumed to be equal to the national electricity mix.

The social costs of a tonne of CO2-eq are estimated on the basis of a study of the U.S. Inter-Agency Working Group of the EPA (2013). This study is in our view still relevant because most climate change effects have yet to take place. This means that the costs of a tonne of CO2-eq have not changed between 2013 and 2016.

Human capital

Only staff in the direct employ of Alliander are included in the calculation of this type of capital.

Well-being impacts of having work were calculated relative to not having work in the Netherlands. The indicator exclusively concerns the non-financial direct well-being impact. It is assumed here that work satisfaction has a direct positive impact on well-being.

It is also assumed that non-work related absenteeism has no connection with the work at Alliander. The calculation of the impacts of work-related absence and accidents of employees (safety) is limited to direct effects. An accident or illness may be the underlying cause of other accidents or illnesses, but this is not measured here.