Isolated power in Catamarca's puna: operating and maintaining the diesel plants and converting them to hybrid
Energy is 30 % of the operating cost of a brine lithium mine: USD 943 per tonne of carbonate, the second-largest expense after reagents and above all of labor. In Catamarca, two of the four operations still run on diesel above 4,000 meters of altitude. The other two already left: Fénix with a dedicated 135-kilometer gas pipeline and Tres Quebradas with its own 132 kV line. That makes this market far smaller than it looks — and its shape is about to flip, because Sal de Vida's technical report already projects 16 MW of solar with batteries to cover 80 % of its demand, and across all of Catamarca's puna there is not a single installed battery reported by any source.
What the market is made of
This niche's split is harsh and worth seeing before investing: most of the energy bill is not contractable. The diesel molecule is bought from the oil company and the equipment is controlled by the brand. What is left —and it is all this figure counts— is operating and maintaining what is already installed, and then converting it.
The rule that moves it
Here the rule does not create the demand —the mine needs electricity with or without a law— but it decides who can invoice it and who pays for the public part: Each one opens its own page, with the rule, since when it applies and its primary source.
enablesRe.P.E.M.: Catamarca's mining local-content rule is a resolution, not a lawThe provincial supplier registry is the way into the mining contract: being registered makes the invoice count towards the local-purchase commitments the operator has to demonstrate. For this business line the Catamarca payroll requirement is achievable —electricians and engine mechanics exist in the province and in the corridor's towns— but the registry does not grant what actually holds people back: on-site fuel storage and dispensing, which has its own permit, and high-altitude work certification for staff.see the reform →enablesMining revenue does not go to the budget: it goes to a trust decided by a committee of threeIt is the payer for the public half of this niche and almost nobody looks at it. The mining royalties fund financed the two hybrid parks that exist in the puna today —Antofagasta de la Sierra and El Peñón— and also the 33 kV line that connects the Puna to the provincial system. Two parks in the plan remain unbuilt: Antofalla and La Ciénaga. It is a public buyer: you get in through a tender rather than a quote to the operator, with a different payment timeline and a different set of specifications.see the reform →Why this market exists
The underlying policy that opens up this demand. It is the same inference declared by the rules and the program pillars pushing in this direction.
the asset leaves demand that does not expireThe engine · what generates this demand
This market does not float on its own: concrete megaprojects drive it. These are the ones moving demand for this niche — each with its investment and status.
Lithium brine project in the Salar del Hombre Muerto (western zone), to produce 12,000 t/yr of lithium carbonate equivalent…
see the project →Expansion (Phase 1B) of the historic Fénix lithium-carbonate project in the Salar del Hombre Muerto, operated by Rio Tinto via Minera del Altiplano…
see the project →The niche in depth
Who splits the market, where you get in, what pays and what could break it.
already in
split
Today the power plant is a mine asset and the mine runs it. A third party running it is precisely what the province's research declares to be the missing link: there is no generation, transmission or electrical maintenance layer sold as a service, even though it is the business's second-largest cost.
The genset, the turbine and the critical spare are imported, and the brand controls warranty service. That part is not contested: it is captive by design.
Awarded the El Peñón hybrid solar park —300 kW of photovoltaics and two 330 kW diesel gensets— for around USD 1.15 M. It is the only name with a published track record of hybrid generation built in Catamarca's puna, and the buyer for that job was the mining trust, not an operator.
It is the provincial distributor and the owner of both hybrid parks, as well as the builder of the 33 kV line that connects the Puna to the provincial system. It does not compete for the mining contract: it is the customer on the public side and the one tendering the two parks still missing.
The gap is not in the equipment —the brand supplies that— but in the three layers nobody provides from within the province:
Operating and maintaining the plant, which is what the technical report itself leaves out of its figure. The reference energy cost is built as fuel plus depreciation of the equipment over seven years, and states verbatim that it does not include operator or labor. That layer exists, it gets paid for, and it has no declared Catamarca supplier.
The fuel farm and its telemetry. Tanks, dispensing, metering and on-site consumption control. It is the part of diesel that really is a service —trunk haulage is counted by the outbound logistics sheet— and it is where a small firm gets in without buying an engine.
Batteries, which do not exist anywhere in Catamarca's puna. The installed fleet —600.30 kW at Antofagasta de la Sierra, 300 kW plus 660 kW of diesel at El Peñón, and the private plants— reports no storage in any source. And the precedent next door is already measured: Lindero, in Salta, cuts 40 % of its diesel with 6 MWp and 12 MWh of batteries.
The two parks the province has still not built. The provincial distributor's plan has four parks for the Antofagasta department and two are done: Antofalla and La Ciénaga are missing. They are paid for by the mining royalties trust, which is a different buyer from the miner and with a different purchasing process.
The equipment and original spares —gensets, turbines, switchboards and their warranty service— which the manufacturer controls and which are also imported. Plus the supply of the diesel molecule, which is a contract with the oil company.
Operating and maintaining the existing plants, the on-site fuel farm with its consumption telemetry, and the engineering and construction of the conversion to hybrid with batteries.
The maintenance contract for a single plant, with a base in the area and spares in stock. It is the cheapest door: it does not require buying the equipment, it is billed as a retainer and the customer already has the problem.
When you get paid, and what blocks it
effect
The niche has a measured, published externality worth stating because it is the sales argument: the Antofagasta de la Sierra solar park saves around USD 140,000 a year in diesel and transport, and the Salta precedent at Lindero cuts 40 % of annual diesel and with it 10,630 tonnes of carbon dioxide. In a province where diesel arrives over gravel and above 4,000 meters, every liter not burned is also a truck that does not go up. On the social side, electrifying the puna is not only a mining matter: the El Peñón park gave that town 24-hour electricity for the first time, and both existing installations were paid for by the mining royalties trust — that is, lithium rent financing the grid of the town that produces it.
calculate it
Concentration Concentration is high on the equipment side and low on the service side, and that asymmetry is the way in. The genset, the turbine and the original spare are controlled by the brand and are not contested. But operating and maintaining the plant on site —what the reference technical report itself excludes in writing from its energy cost, «without operator or labor»— has no declared Catamarca supplier. The province's mining services chamber carries renewable energy in its own name, and the supplier chamber's map of business lines does not register a single member in instrumentation and automation. The only name with hybrid work built in the puna is Air Total, and its buyer was the mining trust, not an operator.
Who really pays?
There are three payers and they differ from one another — different purchasing process, different timeline and different collection risk:
It is the highest-margin contract in the business because what is sold is not a repair: it is that the plant does not stop. A plant down at an evaporation operation does not cost a day, it costs a process window. Today that layer is handled by the operator itself with plant staff.
Sal de Vida's technical report already projects 16 MW of solar with storage to cover 80 % of its demand, and Rio Tinto says its operating cost reductions come from cutting diesel dependence. The reference case is Lindero, in Salta: 40 % less diesel and ~USD 1.8 M of savings a year.
This payer is not the mine and almost nobody looks at it. It already financed both existing parks —Antofagasta de la Sierra and El Peñón, the latter awarded to Air Total for around USD 1.15 M— and has two more unbuilt. It tenders rather than takes quotes: the process is public procurement.
What we watch · when to enter
This is not «what breaks it»: it is the dashboard for getting in at the right moment, and in this niche the clock runs against one of the two possible offerings.
There is a private 345 kV line (YPF Luz and Central Puerto, some 300 km and 350 MW, USD 350-450 M, with works declared for 2026-2029), Genneia's Línea Minera at USD 400 M, and the 500 kV Chaparro-Antofagasta de la Sierra-Punta Cobos line in the national electricity transmission plan. No public source reconciles the private route with the national plan's, so today it is impossible to tell whether they are the same job under two vehicles or two competing ones. What gets watched is concrete: a tender call, an award, or a Secretaría de Energía resolution setting the route. The day that comes out, the business of selling diesel availability starts having an expiry date and the business of executing the conversion accelerates. The second indicator is the investment decision on Sal de Vida's 16 MW of solar with batteries, which is read in Rio Tinto's reports.
There are three projects announced to the same destination and zero meters built: the 345 kV line from YPF Luz and Central Puerto (some 300 km, 350 MW, USD 350-450 M, with works declared for 2026-2029), Genneia's Línea Minera at USD 400 M, and the 500 kV Chaparro-Antofagasta de la Sierra-Punta Cobos high-voltage line in the national plan. The day any of them arrives, isolated generation stops being the only option. ⚠️ And there is a coordination gap the research itself declares: nobody publicly reconciles the private 345 kV route with the national plan's 500 kV route to the same destination, so it is impossible to tell whether they are the same job under two vehicles or two competing ones.
This is not our inference: Sal de Vida projects a 16 MW solar park with batteries in its own technical report to cover 80 % of its demand, and Rio Tinto states that its operating cost reductions are achievable by cutting diesel dependence. A niche whose customer publishes its plan to shrink it reads differently: the contract worth fighting for is not selling fuel, it is executing the conversion and operating whatever remains.
TGN's project declares more than 300 km of 12-inch pipe, an initial capacity of 1.5 million cubic meters a day and USD 370 M prob of investment, on a route from Susques to Antofagasta de la Sierra. If it gets built, converting diesel generation to gas in the puna stops being hypothetical — and anyone who specialized in diesel engines needs to have changed their offering beforehand.
Of Catamarca's four lithium operations, two left diesel before this niche existed: Fénix with a dedicated 135 km gas pipeline and Tres Quebradas with its own 132 kV line. Kachi could be the third: its supply study with YPF Luz has already concluded that the grid is viable. Every exit shrinks the market without anyone competing for it.
Sal de Vida is in commissioning and its first production is in the second half of 2026; Hombre Muerto Oeste processed its first chloride on 28 May 2026. If either delays its ramp-up, the bottom of the band is what applies. The indicator that says so is public: the production each operator declares in its quarterly report.
The province's research declares it as a gap: the self-generation capacity in MW of Fénix and Sal de Oro could not be confirmed. That is why this figure is built from the cost per tonne of product rather than from installed MW, which would be the natural route. If that capacity were published, the method could be redone from the other side and cross-checked.
How the number is built · and how fresh each data point is
The figure is built from three published variables and one subtraction. Change one and the total recalculates.
The number rests on a few variables. The formula shows how it moves when each one changes; and each variable carries its freshness seal — how often it is worth revisiting. estim
How we validate this figure
The figure does not come from counting generators, because nobody publishes the installed self-generation capacity of the private plants and the province's own research declares it as a gap. It comes from a subtraction that is published: Sal de Vida's technical report puts energy at USD 943 per tonne of carbonate and, in another paragraph of the same document, fuel at USD 702. The difference —USD 241 per tonne— is everything that is not the diesel molecule: the equipment, its operation and its maintenance. That is all we count. Then we apply two cuts: Hombre Muerto Oeste does not produce carbonate but chloride concentrate, a less energy-intensive process, and both operations are starting up, so they get a ramp-up. And there is a cross-check we were not looking for and it closed: along this route the energy cost works out to USD 321 per MWh, and a different technical report —the Hombre Muerto Norte one— publishes USD 311 per MWh for the same type of plant. Two independent documents, 3 % apart. What we deliberately leave out is the diesel itself: it is around USD 13 M a year, but it is a purchase from the oil company and not a supplier business.
How to cite this figure: Despegue (2026). Isolated power in Catamarca's puna: operating and maintaining the diesel plants and converting them to hybrid · Catamarca. despegueargentina.com/en/catamarca/energia-aislada-puna-diesel · terms of use
Neighboring niches · High-altitude infrastructure
There are 4 RIGI projects in Catamarca that will buy from this trade, and each one opens its window in a different phase. You already have 4 named competitors on this page. Everything we publish here is public and complete. What we are building is what no listing gives you: in what order they will need it, when each phase opens its window, what you need certified before knocking, and who is already inside.
It is built per company, not a generic PDF. Leave us your details and we will tell you when it is ready.
- 10+ years in data science for clients across Europe and the Americas
- Certified in AI governance (ISO/IEC 42001)
- Machine Learning (Google Cloud)
- Registered expert with the European Commission
Get on board the takeoff
Tell us what you are looking for and we will reply. This is what we work on: the map of isolated power in Catamarca's puna: operating and maintaining the diesel plants and converting them to hybrid and the niches opening up.