Flexible connection replay

What does a flexible connection mean for your site?

This page replays one year of real data-centre demand, half-hour by half-hour. Set an import limit and when it applies. The page shows how often the limit applies, what a battery covers, and what is left for cooling and IT.

Data: UK Power Networks open data (CC BY 4.0). The profile is the UK Power Networks standard data-centre demand profile. UK Power Networks built it from at least 10 connected data-centre sites and uses it for import curtailment studies. It is not one site. We scale it to a site with 20 MW import capacity. Illustration, not advice. Source and method

Your connection

Firm import limit When the limit applies

Your battery

Battery power Battery energy Initial state of charge

Week

Site loadImport limitGrid import after batteryImport above limitLimit applies

Source and method

Data: Standard Profiles UK Power Networks Uses for Electricity Demand, column "datacentre", from UK Power Networks. Licence: CC BY 4.0. We changed the data: we scaled the load factor (% of maximum import capacity) to MW.
The profile has 17,520 half-hours (one year). Times are UK local time.
Battery model: while the limit applies, the battery discharges to keep grid import at or below the limit. When the limit does not apply, the battery charges, but only inside the headroom below the limit. Round-trip efficiency is 90%.
An event is a run of half-hours in a row where the limit applies and the load is above the limit.
"Battery for 100% / 95% of events" assumes a full battery at the start of each event. "Remaining shortfall" comes from the full-year replay with your battery. Cooling or IT must cover it.
"Find minimum battery" sets battery power to the largest shortfall. Then it finds the smallest energy that leaves no shortfall in the full-year replay.