Our innovation policy benefits our stakeholders and is aimed at achieving our strategic objectives in accordance with our mission of ensuring a high level of security of supply and contributing to an integrated and sustainable North-West European electricity market.
Innovation in practice
Innovation is essential for the continued development of a robust electricity supply system. Some examples:
We are currently conducting tests of underground HTSC cables (High-Temperature Super Conductors) that can transport three to five times more electricity than conventional cables. The results of this Dutch pilot project – the world’s longest HTSC route – will be critical for the future development of transmission capacity, especially in densely populated areas.
380 kV cable research programme
The 380 kV cable research programme has been ongoing for a number of years now. The main goal of this programme is to answer the question: ‘How many kilometres of 380 kV underground cable can be used in the Dutch 380 kV grid?’ To answer this question, we work together with universities and research institutions to focus on topics like load flow and transient behaviour. Besides this academic approach, we are also conducting another, more practical investigation. Austria Power Grid (APG), Wiener Netz (WN) and TenneT are working together on a number of papers. These papers deal with practical topics and can be used by all parties involved. Determining the maximum feasible length of 380 kV underground cables is still a ‘work in progress’. The maximum cable length will be investigated and customized on a case-by-case basis for upcoming projects.
In our substations we use air-conditioning systems to cool our buildings, maintaining a temperature level between 5 and 35 degrees Celsius and a humidity level between 20 and 90 percent. Our aim is to reduce the consumption of energy and cooling fluids by replacing air-conditioning systems with free cooling. The use of the outside temperature, low energy costs and a low maintenance requirement results in a positive business case. If this pilot project is a success, we will investigate where replacement of other air-conditioning systems would be beneficial.
More efficient capacity calculations
TenneT’s control centre in Dachau has introduced a new tool: a unique application now calculates capacities in the event of congestion on cross-border connections (interconnectors). Capacities can be determined more efficiently using this ANT tool, allowing TenneT to protect system security even more effectively.
One of the ways in which TenneT finances its extensive investment portfolio is by issuing so-called ‘green bonds’. This issuance programme has resulted in investments totalling 2 billion euros from parties interested in supporting sustainable projects that benefit the common good. Green bonds are an attractive way for TenneT to fund the energy transition.