They won't pay for any energy costs[1]. That's a pretty tall incentive for a data center.

> Además, al ubicarse en la zona de libre comercio, Amazon no pagará impuestos nacionales o provinciales sobre el consumo de energía, un beneficio generoso para un centro de datos.

Translated:

> In addition, when located in the free trade zone, Amazon will not pay national or provincial taxes on energy consumption, a generous benefit for a data center.

[1]: https://www.clarin.com/tecnologia/confirman-amazon-abrira-ce...