Methodology

How the Speed-to-Power grade is computed per feeder area, municipality and postcode.

A grade, not a date

Grid operators publish relief dates, but those dates shift. An absolute promise ("connection in 2027") is misleading: in a congested area, the meaningful question is not when but how fast relative to every other area. So Dutch Grid reports a national percentile on an A–F scale — relative, and therefore stable as the whole market moves.

Consumption (afname) versus feed-in (opwek)

Each feeder area gets two independent grades:

• Afname — consumption. Speed to connect a new data center, factory, heat-pump cluster or EV charging hub.
• Opwek — feed-in. Speed to connect a solar farm, wind farm or battery in export mode.

The two-layer trap

The regional DSO (Liander, Stedin, Enexis, Coteq, RENDO, Westland Infra) runs the medium-voltage net. TenneT runs the high-voltage layer above it. An area can have room at the DSO but be stuck at the TenneT level. We cap the grade at C while the TenneT cap applies. When TenneT's published relief year is reached, the cap drops and the grade reverts to its uncapped percentile.

Sources & cadence

• Netbeheer Nederland — national congestion register (monthly).
• TenneT — investment plan + relief year per substation.
• Stedin — public waitlist disclosures.