The timeline of a lithium project: how long from discovery to first carbonate

Why lithium isn't produced overnight

In the mind of the non-specialist investor, a lithium project is often reduced to two moments: the discovery of the resource and the sale of the product. The reality of the sector is considerably longer. From the first exploratory drilling to the first tonne of battery-grade lithium carbonate, seven to ten years typically pass, even in jurisdictions with stable regulatory frameworks and good-quality brines like those in the Argentine Puna.

That timeframe is not a matter of inefficiency but of the sequential nature of the business: each stage depends on the previous one having reduced technical and financial uncertainty. A project that skips steps to accelerate the calendar usually pays for it later, with cost overruns or a plant that fails to reach nominal capacity. Understanding the timeline is, ultimately, understanding where the risk lies.

Stage 1: exploration and resource definition (2 to 4 years)

Everything begins with exploration. In brine projects, this involves geophysical campaigns, drilling of study wells and pumping tests to characterize the reservoir: lithium concentration, presence of impurities such as magnesium and boron, and the porosity and permeability of the aquifer. The goal is to move from a promising anomaly to a measured resource classified under international standards (JORC or NI 43-101).

This phase can take two to four years and is intensive in risk capital, because there is still no certainty that the project will be economically viable. Many projects die here: the data reveal low concentrations, unfavourable magnesium-to-lithium ratios or insufficient flow rates. Clearing this stage with a robust resource is the first real filter of the timeline.

Stage 2: engineering and feasibility studies (1.5 to 3 years)

With the resource defined, the project moves towards engineering studies, which increase in precision: first the preliminary study (PEA or scoping), then the prefeasibility study (PFS) and finally the definitive feasibility study (DFS). Each level refines the plant design, the processing method —traditional evaporation or direct lithium extraction (DLE)— and the estimates of capital and operating cost. A well-executed DFS brings the margin of error of estimates down to a range of 10 to 15 per cent.

In parallel, the environmental approval process runs. In Argentina, this includes the submission and evaluation of the Environmental Impact Report before the provincial authority, plus water management and consultation with communities. This component is rarely accelerated and often conditions the start of construction as much as the engineering itself.

Stage 3: financial close and investment decision (0.5 to 1.5 years)

A positive DFS enables the final investment decision (FID). It is the inflection point of the timeline: only then does the project stop being a technical promise and become a capital commitment of hundreds of millions of dollars. Brine lithium projects in the Puna typically require initial investments of between 500 million and 1 billion dollars, depending on their scale and technology.

Financial close combines equity, debt and, frequently, offtake contracts with buyers who secure future demand. Structuring this package can take months, especially when multilateral banks or strategic partners are involved and demand their own technical and environmental audits before disbursing.

Stage 4: construction, commissioning and ramp-up (2 to 4 years)

The construction of a brine operation with evaporation ponds is, by definition, slow: solar concentration cycles require between twelve and eighteen months just to fill and mature the pond system before the chemical plant receives concentrated brine. Added to this is the assembly of the carbonate plant, the electrical infrastructure, water access and roads.

First carbonate production marks a milestone, but not the end. The ramp-up follows, the period in which the operation gradually scales to nominal capacity and stabilizes product quality to reach battery grade. This process can take one to two additional years and is where many projects discover the gap between what was projected and what is real.

The Argentine case: the Puna and the effect of the RIGI

Argentina, the world's fifth-largest lithium producer, concentrates its potential in the brines of the Puna in Catamarca, Salta and Jujuy, renowned for their low extraction cost. However, the high-altitude geography, complex logistics and the availability of energy and water impose challenges that stretch timelines relative to other jurisdictions. The seven-to-ten-year calendar holds here too.

The Large Investment Incentive Regime (RIGI), in force since 2024, aims to improve fiscal and exchange-rate predictability at the investment decision stage, a critical moment of the calendar. It does not shorten engineering or construction, but it can reduce the uncertainty that delays financial close. For the investor, the conclusion is clear: lithium rewards patience and punishes shortcuts. Reading the timeline well is the best tool to size up risks and expectations.