Access to the grid: Metrics and targets

Our policies and measures are designed to provide as many customers as possible with a connection or capacity upgrade as quickly as possible, so that we fulfil our statutory obligations. ^{(MDR-T ESRS 2 para 80(a))} Unfortunately, due to congestion, customers often have to wait a long time for the desired transmission capacity.

Satisfaction with execution date Low volume customers

Enexis monitors the satisfaction of low-volume consumers with regard to the timing of connection works. Increasingly, customers submit their requests well in advance. As a result, lead times may appear longer on paper, while customers are in fact satisfied with the agreed connection date. In addition, the ACM has not yet established new statutory connection periods for low-volume consumers (see also ‘Impact on low-volume consumers: connection timelines and lead times’).

We measure this KPI by surveying customers after the process is complete. This survey is done by an external party. For 2025, we set a target satisfaction score of 65% regarding the implementation date of low-volume consumer connections. This target remains in place for 2026. However, grid congestion and the introduction of social prioritisation for low-volume consumers are putting increasing pressure on requested implementation dates. ^{(MDR-T ESRS 2 para 80(b)(c))}

In 2025, 72% of our low-volume customers were satisfied with the timeframe in which their connection was completed. A customer is considered satisfied if the score is higher than 6 out of 10. Customers are classified into three categories — gas, electricity, and relocation/upgrade — depending on the service provided by Enexis. In calculating the KPI, each category is assigned equal weight and therefore contributes equally to the final score. We achieved our target for 2025.

Connection lead times for high-volume consumers

From 2025, a KPI has applied to high-volume (HV) consumers to measure the timeliness of completing HV connections relative to the customer’s desired date. In 2025, we primarily completed connections under the old legislation on connection timelines, and the 2025 KPI definition was adjusted accordingly. A project is considered to have been delivered on time if it has been realised within the customer’s desired timeline or within 40 weeks.

For 2025, the target for this KPI was KPI 65%. ^{(MDR-T ESRS 2 para 80(b)(c))} This means that we aimed to connect 65% of customers according to their requested date of within 40 weeks. The targets were designed to connect as many customers as possible on time, respond to customers who deliberately wish to be connected later than the legal deadline, and prioritise the best use of available implementation capacity.^{(ESRS2 MDR-T 80f)} In 2025, 65% of the connections for high-volume consumers were delivered by the desired deadline.

From 1 January 2026, the KPI ‘Connection term HV in accordance with desired date’ has been replaced by the KPI ‘Connection term HV in accordance with statutory deadline (%)’. As explained in the policy section, the new ACM code decision on connection times for high-volume consumers has been in effect since 1 January 2025. The new KPI measures the timeliness of all connections delivered under this code against the applicable statutory deadlines^{(ESRS 2 MDR-T 80i)}.

In 2025, a substantial share of applications from high-volume consumers was placed on the waiting list. As at the end of 2025, there are 10,394 requests on the waiting list (requests for both feed‑in and consumption are counted as one request). Broken down by feed‑in and consumption, there are 6,490 (2024: 4,845) requests from large-volume consumers on the waiting list for consumption and 4,503 (2024: 4,181) for feed‑in. This represents 4,885 MW (2024: 3,650 MW) of consumption capacity and 2,768 MW (2024: 2,353 MW) of feed-in capacity. For consumption, this reflects an increase of 34% in applications and in capacity. For feed-in, applications increased by 8% and capacity by 18%. Despite continued growth in the waiting list, we allocated released transmission capacity to 144 customers (2024: 49).

In the context of social prioritisation, we received 416 priority requests in 2025 (2024: 503). Of these, 232 (2024: 207) were congestion relief requests and 184 (2024: 296) were in the safety and basic needs categories. Within the safety and basic needs categories, 256 customers (2024: 163) were granted priority status on the waiting list. These included primary schools, water authorities, and police stations. In 2025, two priority customers received transmission capacity (2024: 0 customers).

Transparency towards customers

In order to provide prospects for high-volume consumers on the waiting list, we introduced the KPI “plan reliability” in 2025. This KPI concerns the realization of 10 major investment projects in 2025, based on Enexis’ 2024 Investment Plan. The Investment Plan originally stated that Enexis intended to carry out 14 major projects in 2025. However, when determining the KPI, it became clear that 4 of these 14 projects could no longer be executed, partly due to permitting issues. As a result, the KPI target was adjusted to 10 projects. A project counts as “realized” for the KPI once it has been commissioned. In addition, a project is also considered realized when it has not yet been commissioned but the delay is caused by TenneT. The KPI realization for 2025 amounts to 90%. In the reporting year, five projects were actually commissioned. Four projects were postponed to 2026 due to scheduling delays at TenneT. Because these delays were caused by TenneT, these projects are still counted as realized. One project was postponed to 2026 due to internal planning adjustments and is therefore considered not realized. However, this KPI does not provide the desired level of insight and will therefore no longer be reported from 2026 onwards. ^{(ESRS 2 MDR-T 80(a))}

From 1 January 2026, Enexis will place greater emphasis on reducing waiting lists. We are therefore introducing a new KPI: ‘Reduction in customers on the waiting list (capacity + number of customers)’. Our objective is to reduce the number of applications on the waiting list as at 1 January 2026 by at least 25% during 2026. This reduction can be achieved, for example, when customers accept a flexible contract, when capacity is released through congestion management, or when grid expansions create additional transmission capacity.

Build, build, build

Expanding our grid is a key measure to address grid congestion. ^{(MDR-T para 80(a))} We measure this expansion, among other things, by the technically realised grid capacity. ^{(ESRS 2 para 79(a))} This includes newly installed high-voltage and medium-voltage transformers, regardless of whether TenneT connected them. We do not deduct the replacement of old transformers from this metric.^{(ESRS 2 MDR-M para 77(a)(c)(d))}

Enexis set a target to add at least 1,200 MVA of technical grid capacity in 2025. ^{(MDR-T ESRS 2 para 80I(b)(e))} For 2026, the target is set at 2,050 MVA. ^{(MDR-T ESRS 2 para 80I(b)(e))} The target for 2026 was determined based on the five-year strategy for 2022-2026, which was established in 2022. ^{(MDR-T ESRS 2 para 80(f))}

In 2025, we added 1,260 MVA of grid capacity (2024: 1,920 MVA). The technically realised grid capacity therefore corresponded closely to our target of 1,200 MVA. Realisation in 2025 was 660 MVA lower than in 2024. In 2024, we upgraded almost all of our existing stations. Further expansion now requires new locations. Securing suitable sites takes time and can delay the increase in our grid capacity. As a result, both our target and the actual expansion achieved in 2025 were lower than in 2024.

The energy transition will require continued grid expansion until at least 2050, driven by growing electrification and sustainability ambitions. Economic growth and new customer demand also necessitate additional capacity where needed. Under the current regulatory framework, a return to the pre-2018 situation, with no waiting lists, is unlikely in the medium term. However, the development of congestion and wait times remains highly dependent on external factors, such as the ACM prioritisation framework and potential flexibility obligations. Based on the investments now underway, we expect waiting lists to stabilise over the next decade and gradually decline thereafter.^{(ESRS 2 MDR-A 68c)}

Making better use of our grid

We monitor how efficiently the grid is used with the KPI ‘Created grid capacity through Flexible Utilization of the Grid (FUN)’. Realisation occurs, among other things, through the conclusion of flexible contracts with restrictive conditions and the use of our grid's reserve capacity. ^{(ESRS 2 MDR-M para 77(a)(c)(d)} By making better use of the grid in this way, we aim to create an additional 500 MW of capacity from the existing grid. ^{(ESRS 2 MDR-T para 79(b))} The targets for 2025 and 2026 are based on an estimate of the additional flex capacity to be developed at each HV/MV station.

In 2025, we realized 542 MW (2024: 498 MW) of additional capacity. We achieved this by optimally utilizing the technical capabilities of our assets through the use of reserve capacity at HV/MV substations and cables (368 MW). In addition, we used capacity more efficiently through flexible contracts (174 MW). With this, we met our target. In 2025, we included the reserve capacity of cables in this KPI for the first time, which resulted in an additional realization of 92 MW compared to 2024. When this reserve capacity is excluded, the realization of this KPI is 48 MW lower than in 2024. This decrease is mainly due to the realization of several large battery propositions in 2024 and the fact that less reserve capacity was available at HV/MV substations in 2025.^{(ESRS 2 MDR-T para 79(c))} 

In addition to providing regular, unconditional transmission capacity, we approached larger customers on the waiting list – often with a required capacity of more than 1 MW – to explore conditional capacity through alternative contract forms. In 2025, we concluded agreements with 193 customers (2024: 99), representing 177 MW (2024: 194 MW), via capacity restriction contracts, bidding obligation contracts, Blokstroom, ZonBalans and group transport agreements (GTO). At the same time, we observed that interest in flex contracts remains limited because available contract forms do not always align well with customers’ needs and operational realities.

All targets and metrics relating to grid access are set on an annual basis. ^{(MDR-T ESRS 2 para 80(e))} No baseline measurement or base year applies. ^{(MDR-T ESRS 2 para 80(d))} Affected stakeholders are not involved in setting or monitoring these targets, nor in identifying improvement measures. ^{(MDR-T ESRS 2 para 80(h); ESRS S4 41(a)(b)(c))}

Realistic expectations

Despite our measures and targets to connect customers on time, expand the grid as quickly as possible, and use existing grid capacity as efficiently as possible, these efforts will not help high-volume customers on the waiting list in the short term. In the coming years, they will continue to experience the negative effects of grid congestion. Low-volume consumers are also likely to face increasing disruption as pressure on the electricity grid grows.

If the autonomous growth of existing low-volume and high-volume consumers exceeds expectations and they do not take steps to reduce or make their consumption more flexible, this will further affect customers on the waiting list. Even if grid investments are delivered according to plan, they may still prove insufficient to provide all waiting-list customers with the transmission capacity they require. In some cases, existing customers may also be impacted, for example if disconnections are necessary to prevent overload. Moreover, we are heavily reliant on TenneT for transmission capacity, and spatial and licensing procedures often take considerable time. In addition to using flexible solutions and adjusting their electricity consumption, customers will need to consider their short-term energy mix, the timing of electrification, and the most suitable longer-term energy mix.