UPSIE BU2, radiotherapy bunker UZ Gent

Two heavy tower cranes, one battery, zero emissions.

The challenge

The expansion of UZ Gent required two large tower cranes:

WOLFF 8033.20 Cross (20 tons - 75 kW hoist motor - peak up to 130 kW)

Liebherr 470 EC-B (16 tons - 65 kW hoist motor - peak up to 110 kW)

However, the heavy power connection was located a long distance away, which would require long, expensive and difficult to handle cables.
A classical solution with diesel generators would:

- cause additional costs,

- create noise and emissions,

and fail to meet the project's sustainability goals.

‍

STRABAG was looking for an emission-free, quiet and reliable solution that could supply both cranes simultaneously without grid aggravation.

‍

The solution

Neargrid supplied a Boost 200 kVA : an intelligent site battery that forms a high-performance microgrid on the site.

- Power supply via a 63A - 400V mains connection → ± 43 kVA continuously available

- During lifting peaks, the Boost delivers up to 240 kVA → both tower cranes run simultaneously without overloading the grid connection

- Strategically positioned between cranes → minimal voltage drop & cable losses

- Both the cranes and the rest of the yard consumers (lighting, pumps, mushrooms) are fed directly from the Boost

‍

The configuration was worked out with Neargrid to ensure maximum security, stability and simplicity.

‍

The result

The yard now has a completely silent, emission-free and stable power supply, with no need for:

- a weighted grid connection,

- diesel generators,

- heavy cabling,

- or downtime risk.

The Boost effortlessly captures all peak power, keeps grid quality constant and guarantees that both taps always have sufficient power.

‍

What STRABAG says

"The construction site must have the right power at all times. With a traditional power group you always run risks, but with the Neargrid battery the power supply is guaranteed to be quiet, reliable and completely emission-free."
‍Jan Dens, Project Manager STRABAG

"On the UZ Gent site, we combine several heavy-power installations on one 200 kVA battery. Even at peak loads, everything remains stable: the Boost handles the peaks effortlessly without any additional connection or delay."‍

‍Mathias Van Gastel, Project Manager STRABAG

‍

Conclusion

UZ Gent becomes a forerunner in emission-free construction site infrastructure. Thanks to Neargrid, the construction site will have:

- complete energy security,

- zero emissions,

- stable voltage at heavy peak powers,

AND a construction site that runs quieter, cleaner and more economically.

‍

Neargrid enables emission-free construction sites and helps construction companies meet their sustainability goals : discover more projects in this video.

‍

‍