17JUN

Brazil ties tax break to water cap

3 min read

10:13UTC

Brazil's Senate passed PL 278/2026 on 1 September, capping water use at 0.05 litres per kilowatt-hour. Miss the cap in any single year and the tax break goes.

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Key takeaway

Brazil's tax break demands 0.05 litres per kWh, verified annually, which rules out evaporative cooling.

Brazil's Senado Federal, the country's upper house, approved PL 278/2026 on 1 September without changes of merit, sending it to President Luiz Inacio Lula da Silva for signature rather than back to the Chamber of Deputies⁠¹. The bill creates Redata, what Brazil's legislation calls a special taxation regime for data-centre services. It suspends Import Tax, PIS/Cofins and PIS/Cofins-Importation, the federal contributions charged on gross revenue and on imports, along with IPI, the federal tax on industrialised products.

Five conditions ride on the benefit. The one that bites is written as water use efficiency, or WUE, the litres a facility consumes for each kilowatt-hour of computing energy, capped at 0.05 litres per kWh and verified annually. An operator must also draw its power from renewable or low-emission sources, direct at least 10% of actual processing and storage supply to the domestic market, invest in Brazil the equivalent of 2% of the value of products bought under the benefit, and publish an annual sustainability report on the installations⁠².

A ceiling that low rules out evaporative cooling, the method that sheds heat by letting water evaporate and which accounts for most data-centre water draw. What survives the test is closed-loop cooling, where the same coolant circulates and rejects its heat to air, or air cooling outright. Brasilia has written a design mandate and attached a tax break to it.

Two other jurisdictions attached conditions to data-centre support in the same month. Gujarat tied its subsidies to a green-power test, and Taiwan put a supply condition on its own large users. Redata goes further on one point: the test repeats every year and the benefit can be withdrawn, so a cooling design is not signed off once at approval but re-examined by the tax authority for the working life of the building. Government estimates and the Brazilian energy press give different totals for the tax forgone, on what appear to be different bases, so no headline value belongs in print. PL 278/2026 is passed, not law, and Lula has not yet signed it.

Deep Analysis

In plain English

Cooling a data centre usually means evaporating water, like a swamp cooler, which costs less to build but uses far more water than a closed-loop system that reuses the same water repeatedly. Brazil's new bill sets the water limit so low that evaporative cooling essentially will not qualify for the tax break. That pushes operators toward pricier, more water-efficient equipment if they want the tax relief.

Deep Analysis

Root Causes

Redata's water clause exists because Brazil's federal government wants the concession to buy a specific outcome beyond investment volume alone. A capacity incentive with no efficiency condition, the model most jurisdictions used through the 2010s, let operators bank the subsidy while choosing whichever cooling method was cheapest to build, typically evaporative.

Tying the benefit to an annually verified number removes that choice: the operator either designs for the number from day one or forfeits the concession retroactively, which shifts the compliance cost onto the operator's balance sheet rather than the tax authority's enforcement budget.

What could happen next?

Precedent
A large emerging-market economy has written a numeric, annually re-verified environmental condition directly into a tax bill rather than into planning guidance, which other Latin American and African regulators drafting data-centre incentives may copy.

Source Landscape

This story draws on neutral-leaning sources

Primary parallel: Singapore's 2019-2022 data-centre moratorium used a similar mechanism, a hard efficiency threshold tied to permission to build, and it produced the same effect Redata risks: operators that could not retrofit fast enough lost access to the market rather than being taxed into compliance.

Counter-parallel: Ireland's grid-connection constraints since 2021 worked through capacity denial rather than an efficiency threshold, and produced years of litigation instead of a compliance race, because operators had no defined technical target to build against.

Consensus view: Evaporative and hybrid cooling has dominated new-build campuses for years, because it rejects heat at the lowest capital cost; a 0.05 L/kWh ceiling sits well below what that method typically returns, which reads as a de facto push toward closed-loop chilled water or direct liquid cooling.

Counter-view: A fixed water ceiling with no phased ramp risks locking out the cooling retrofit budgets of mid-sized regional builders, while hyperscalers can absorb the switch without losing the tax benefit.

Key tension: Whether Brasilia designed the cap as a floor every operator can eventually clear, or as a filter that only operators already committed to liquid cooling can pass in year one.

Sources:Senado Noticias·Ministerio de Minas e Energia (Brazil)

Mentions:Brazil →Senado Federal →Redata →Taiwan →Singapore →Lula →Gujarat →Ireland →

First Reported In

Update #14 · Brazil bill ties tax break to a water cap

Senado Noticias· 8 Sept 2026

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Causes and effects

Caused by

Gujarat pays for 7.5 GW of capacity

Gujarat's 51% green-power subsidy condition set an earlier precedent for tying data-centre benefits to a measurable sourcing test, which Brazil's Redata scheme now extends with annual verification.

Occurred 6 Aug 2026

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Taiwan votes to make big users generate

Taiwan's self-generation duty for large power users is the second condition-based precedent Brazil's Redata scheme follows in the same window.

Occurred 4 Aug 2026

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This Event

Brazil ties tax break to water cap

A G20 economy has made a national tax benefit turn on an annually verified cooling number rather than on a promise made at approval.

Led to

Lula signs Redata law with water cap

The Senate-passed data-centre tax bill became the signed Lei 15.504.

Occurred 15 Sept 2026

Read story →

Different Perspectives

Chilean data-centre developers

Seven projects, one linked to Google, asked SEA this month for rulings that they fall outside full environmental review; four declared diesel-storage volumes just under the review-triggering tonnage, mirroring the mechanism Alto Jahuel used in July. The clustering suggests the threshold is being engineered, not sized to need.

An Coimisiun Pleanala

Ireland's planning appeals body refused the €1.5bn Killala data centre on 17 September, overturning Mayo County Council's 2025 grant for lack of a fixed grid-connection agreement and no corporate renewable power-purchase agreement. The ruling makes matched-power evidence, not planning consent alone, the deciding factor.

Housing Assembly and Foxglove

The two groups' 6 August appeal, filed through the Legal Resources Centre, kept Cape Town's approval of Equinix's data centre suspended through this window over missing water, emissions, noise and diesel-generator data. Deputy Mayor Eddie Andrews confirmed on 20-21 September that the suspension holds.

Brazil (President Lula, signing Redata)

Lula signed Lei 15.504 on 15 September, creating the Redata tax programme and keeping the Senate's water cap with no veto, while Aneel authorised Scala's AI City to join the national grid from January 2028. Brazil is recruiting capacity other markets are now turning away.

Aragon regional government (Eva Valle)

Aragon's economy chief Eva Valle said on 11 September that Spain's draft decree, requiring 80% hourly-matched renewables via a 10-year power-purchase agreement, is unmeetable by any project and threatens Blackstone, Azora and Microsoft builds already under way. Aragon holds 3,600 MW of granted grid access against 108 MW built.

Texas Governor Greg Abbott

Abbott ordered TCEQ on 21 September to halt every pending data-centre permit until projects pay their own way and complete ERCOT and Texas Water Development Board audits. Texas built the country's most permissive data-centre market; freezing it signals even that market has hit its grid limit.