Some Patagonia data centre developers plan to generate their own power, bypassing the grid queue

A site tour is the cheapest thing a developer can hand a prospective tenant and one of the more expensive things that tenant can accept, because whoever walks a fenceline in Neuquen or south of Trelew in February is the person who has to explain later why a first phase slipped ^[1].

The cost sheets are the place to start, and they are not written on a common basis. OpenAI's letter of intent puts roughly $25bn against up to 500MW, which works out at about $50m per MW ^[2][2]. Green Capital's $3bn against 300MW is $10m per MW ^[3]. FlexDomes' $1.4bn against a 120MW first stage is about $11.7m per MW ^[5][4]. Pampa Energia's $900m against 500MW is about $1.8m per MW ^[5]. The spread between top and bottom is close to 28-fold ^[6], and it measures differences in what is being quoted rather than efficiency: Pampa is quoting infrastructure cost, not a finished building full of accelerators ^[4]. Added together the announced megawatts come to 1,450MW ^[1], and none of that capacity is running yet ^[17].

The reason the search moved offshore is legible. AI demand has started appearing on American electricity bills, including at Rust Belt factories, and the political cost of building at home has risen with it ^[16]. Against that, the region offers onshore wind the report describes as among the most consistent anywhere, plus Vaca Muerta gas cheap enough to make firm baseload plausible ^[8], at 11,000km from the users ^[9].

Developers are selling electricity, but a tenant would actually be underwriting a construction sequence. Green Capital intends to build the wind and solar farms that feed its own site, and Pampa is drawing on gas it already produces, so neither is waiting on a grid-capacity queue ^[14]. That clears the constraint everyone quotes and leaves the ones that photograph badly. Hadassa Lutz of the advisory firm Cloud2Ground told Reuters that "saying you have power is not enough", with grid connections and connectivity still the practical limits ^[15].

The fiscal half splits the same way, between what is law and what is drafted. RIGI already grants qualifying projects 30 years of stability on tax, customs and currency rules, a 25% income tax rate, and repatriation of investment without central bank approval ^[10]. The successor bill would take ten points off that rate, a 40% cut to the headline number ^[11][9], and its higher entry floor reorders the queue rather than simply sweetening it, since Pampa's $900m sits roughly $100m below the line ^[7].

Two things sort these proposals from outside Argentina: whether the project controls its own electrons or needs transmission it does not own, and whether it qualifies under the regime that already exists or needs the bill still sitting in Congress. Green Capital lands in the easy corner on both ^[6][14]. Pampa controls its gas but quotes a figure under the pending threshold ^[4][7]. Sur Energy's site is the biggest number in the queue and the thinnest described, with the power path not stated in the reporting ^[2]. The interest is genuine: Steve Sasse of datacenterHawk told Reuters that two years ago nobody would talk about Argentina ^[12], and Pampa's Ruben Turienzo says tenant interest has firmed ^[13]. It converts when someone signs for power they can verify under a law they do not have to hope for.