To mitigate our negative impacts on network access, we focus on:
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expanding our grid;
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more efficient use of available transmission capacity; and
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transparent communication with our customers.
Expanding our grid
Expanding the electricity grid is essential to reducing congestion. We are working hard to achieve this. We are making substantial investments to increase grid capacity. In October 2025, we presented our 2026 Investment Plan, outlining the investments Enexis intends to make in the electricity grid and gas network over the next 10 years.
Systematic investment in the electricity grid
Enexis is significantly accelerating the expansion of the electricity grid. We are upgrading almost all 119 high-voltage/medium-voltage (HV/MV) substations(ESRS S4 para 31(a)(b);37)(ESRS 2, MDR-A para 68), constructing dozens of new stations, and carrying out structural reinforcements in both the low-voltage (LV) and medium-voltage (MV) networks. To support this scale-up, we are establishing dedicated production lines for the LV and MV networks, training employees in close collaboration with contractors, and further automating production processes. In addition to electricity, we are exploring sustainable options, such as biomethane. Although the current market demand for biomethane remains limited, Enexis Netbeheer expects to invest in approximately 15 biomethane expansion projects over the next 10 years. (ESRS S4 30; 31(c);32(a)(b)(c))
Between 2025 and 2028, we will invest more than €4 billion in expanding our electricity grids. (MDRA-A ESRS 2 para 69(b) In addition, nearly €2.5 billion will be allocated over the next 10 years to the expansion and construction of HV/MV substations. ((ESRS 2 MDR-A 68(a)(b)(c)(d)+ ESRS 2 MDR-A69(c)+ MDR-A ESRS 2 AR23)
These significant investments are reflected in note 12 Property, plant, and equipment and note 6 Cost of subcontracted work, materials, and other external costs of the consolidated financial statements. (ESRS E2 MDR-A par 69b)
More efficient use of transmission capacity
We are committed to using the existing electricity grid as efficiently as possible. This applies to both the feed-in and consumption of electricity.
First, we apply congestion management, as described in the section ‘Grid access policy’. We approach high-volume consumers to conclude contracts for flexible grid use. When enough customers participate, this creates room for additional connections. (ESRS 2 MDR- A 68(a); ESRS S4 para 31(b);37) So far, customers' willingness to use their consumption flexibly appears to be limited. We continue to explore ways of making congestion management more appealing and easier for high-volume customers. (ESRS 2 MDR-A 68(a) In line with the Grid Code, we are also increasingly applying mandatory congestion management, requiring customers with flexible capacity to offer congestion control capacity to Enexis.
Second, we are developing new products that enable customers to use the grid more efficiently. For example, block electricity provides customers with transmission capacity during fixed nighttime windows. Group transmission agreements enable groups of customers to jointly access a higher level of transmission capacity than is permitted individually. By coordinating their supply and demand, they can use more energy within the same grid capacity.
These products are still limited in availability and do not yet meet all customer needs. That is why, within technical limits, we are developing new flexible products and propositions that are better suited to practical circumstances. These developments align with the improvement plan submitted to the ACM by the joint grid operators. (ESRS 2 MDR-A68(c)(d)(e)); ESRS S4 para 31(a)
In addition, we are making use of the grid’s reserve capacity. This capacity is used by applying the ‘escape lane’ (the outage reserve) and by loading our assets beyond prescribed limits.
We monitor the effectiveness of these measures through KPIs. See the section 'Access to the grid: metrics and targets' (ESRS S4 31(d))
Communicating transparently with customers
To raise customers’ awareness of the potential impact of a congested electricity grid, transparent communication is essential. In 2025, campaigns targeting both low-volume and high-volume consumers continued. (ESRS 2 MDR-A 68(a) With the ‘Full of Energy’ campaign, we engage low-volume consumers in the challenges facing the electricity grid, encourage more conscious energy use, and offer practical options for action. For high-volume consumers, we launched phase two of the ‘My electricity grid, your electricity grid’ campaign. This phase focuses on a central question: what can companies do on their own, and what can we achieve together? (ESRS 2 MDR-A 68(b)(c) We continue to refine both campaigns based on their impact, reach and customer feedback.
We want to inform customers as clearly as possible about developments, waiting lists, and opportunities. National capacity maps were made available online with Netbeheer Nederland, TenneT, and the other regional grid operators. These maps provide insight into the available and required transmission capacity, the number of requests, the capacity on the waiting list, and planned grid expansions. The capacity maps for electricity consumption and/or feed-in to the regional grid can be accessed here, via the joint online environment of the grid operators.
In addition to the national capacity maps, we provide high-volume customers with a monthly email update about grid congestion. In it, we share information about new bottlenecks, ongoing congestion studies, and newly released transmission capacity. We also send a quarterly newsletter to all business customers who have subscribed to it. In 2025, we also held special customer days, enabling high-volume consumers to ask questions and talk with our specialists. We also reached these customers through employer and industry associations.
We use the customer transparency score to assess the extent to which customers know where they stand at different stages of the customer journey. This measurement tool is currently being further developed and rolled out across the various customer journeys. We expect to gain the first insights from it in 2026.