• Green Mountain has signed an unnamed neocloud operator for 14MW at its LON-East campus in Romford
  • The customer will occupy the newly delivered high-density block, while a further 16MW expansion remains possible

The fact

Green Mountain has signed an unnamed neocloud operator for 14MW of capacity at its LON-East data-centre campus in Romford, East London. The customer will occupy a recently completed expansion at the site.

The new capacity was designed for high-density computing and can support racks above 100kW with liquid-cooling options. Green Mountain began work on the six-hall expansion in December 2023. The wider LON-East campus provides 37MW of capacity and has room for a further 16MW expansion.

The contract gives the completed 14MW block a customer, but Green Mountain has not disclosed the tenant, its deployment timetable, or when it expects the customer to reach the full contracted power demand.

The assessment

Green Mountain has already built the 14MW expansion and now has one customer taking the whole block. That reduces uncertainty around who will use the new capacity, but the announcement does not say when the customer will install its equipment or how quickly it will ramp up to the full 14MW.

A signed contract does not mean the halls are fully occupied from day one. The customer still has to bring in its computing hardware, connect it to the cooling and electrical systems and increase its power use over time. Green Mountain has designed the new space for racks above 100kW, so the infrastructure is ready for dense workloads; what remains unclear is how quickly the customer will actually use it.

For BTW readers, the next useful sign will be how fast that 14MW turns into active capacity. If power use rises as planned and Green Mountain then moves ahead with the additional 16MW, it would show that demand at LON-East is strong enough to support another expansion rather than simply fill the space already built.

What to watch

Watch the customer's installation timetable, actual power draw and cooling configuration. A decision to proceed with the additional 16MW phase, particularly if backed by another customer commitment, would provide stronger evidence that demand at LON-East is continuing beyond the current contract.