High-altitude energy: maintaining the solar and the batteries already installed in the Puna
One of the four lithium plants already producing in Salta, still in its ramp-up stage, stated that in February 2026 its production was affected by limited supply at its gas plant and by equipment maintenance verif Eramet first-half 2026 results, p. 9. That is exactly what is sold here: firm power, which is what constrains production today. The market has three different tempos: maintaining the megawatts already turning —that is paid today and never switches off—, installing the generation being built through 2029, and converting diesel engines to gas while the power line has not arrived. And the pressure has to be named: six of every ten pesos in this market, and up to seven and a half, never reach a tender in Salta —the owner of most of the capacity solved it with its own supply chain, and whoever built the hybrid plant kept its maintenance too—. A warning about the figure above, and it is methodological: it counts the maintenance of generation, not the cost of generating, which is on the order of sixty times larger and is not an outsourceable market but the operator's own energy cost. Confusing them would make a single still-unbuilt project look bigger than the market of the whole province.
A double, asymmetric window, and the two halves run in opposite directions. The assembly of new generation runs until 2029 and contributes 49% of the market, but it switches off with the legal investment deadlines.See the clocks that are running, one by one
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What the market is made of
The number is contractable service, not energy spend: it does not include fuel or imported equipment, which are the two big lines and the two not bought here. It is built in three blocks with three different clocks — one already running that does not stop, one that switches off on a date, and one that closes by itself when the transmission line arrives.
~USD 8.5-10.5 M/year (60-75% of the total market): six out of every ten pesos in this market, and as many as seven and a half, never reach a tender in Salta.
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~USD 3.5-6 M/year, midpoint ~USD 4.5 M/year (~32% of the total market), addressable by a local or national entrant: panel cleaning and thermography, battery state-of-health testing and management, medium-voltage and substation electrical maintenance, maintenance of gensets and dual-fuel power stations, electromechanical assembly as a subcontractor on the large works, civil works for foundations and piling, and gas connection engineering.
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USD 0.4-1.2 M/year for ONE entrant within 2-3 years. Realistic composition.
See how the range is built
Who really pays?
In this niche the client is almost never the mining company, and that is the fact that most orders the sale: there are four doors and only the third is the holder operator.
It is the first invoice and the fastest, because the client is not the mine but whoever already won the service and needs hands at altitude thesis. The provincial register of mining suppliers has no energy category: its 24 categories do not include the activity, and the registered electrical companies appear under Services, Engineering or Inputs verif. The consequence is one of visibility: the buyer cannot search by that speciality, even though a registered supplier's invoice still counts toward the mining company's local content thesis. The correct statement is not that there are no companies: it is that the regime does not register them as such thesis.
Here the buyer is the construction company and not the operator thesis. The provincial mining promotion act is what opens the door to the outsider: it expressly allows a joint venture with a Salta partner from 30%, and says that mining companies «shall preferentially contract» at least 70% of the annual amount with registered local suppliers and 60% of their payroll in the province, without setting penalties verif. It is a preference with a reward, not a captive market thesis. It lasts as long as the works: Rincón has a legal investment deadline of 30 June 2029 verif and Diablillos expects its investment decision in the second quarter of 2027 verif.
The door with the most margin and the slowest, and both for the same reason: the annual contract with guaranteed availability is signed by the holder and not by a contractor, so the decision goes up to the operations department and sometimes to head office. It is measured in quarters, not weeks, and it almost always comes in as a renewal of someone already inside — which is why the two doors above are the route, not the shortcut. In exchange it is the only relationship that does not switch off when construction ends. The catch is not in the price but in the tax authority, and it is dealt with in «What we watch»: on this line the margin is decided in the classification as much as in the quote.
It is the door with an expiry date and the only one with no anchor of its own: there is no published tariff for the service in the province and no observed contract. What is laid is the infrastructure — 321 kilometers of gas pipeline reaching the puna — and there is at least one operator declaring the migration. It is declared as a bet and not as a market, and that is why the number's midpoint does not rest on this block.
Which projects move this demand
The largest total investment among the lithium projects approved under the RIGI: Rio Tinto is building a 53,000 tpa plant at the Salar de Rincón…
see the project →Gold and silver mining in the puna, on the Salta/Catamarca border area: feasibility development, a 3.15 Mt/yr processing plant and full infrastructure…
see the project →Second stage of POSCO's Sal de Oro lithium complex in the Salar del Hombre Muerto, on the disputed Salta/Catamarca border strip…
see the project →The largest RIGI application filed by Salta and the one its portfolio was missing: >USD 3,000 M across three phases over the Pozuelos and Pastos…
see the project →When the window opens
This is not «what breaks it»: it is the dashboard for not signing a contract with the wrong classification. In this niche the expensive mistake is not coming in late or quoting low — it is invoicing on the line that costs twice as much, every month and for the whole life of the contract.
See the evidence
See the evidence
See the evidence
There are three transmission line projects competing for the same corridor and none is under construction as of August 2026 unconf financial press and provincial opinion not reopened: Genneia with the provincial distributor, for more than USD 400 M to supply 2.6 million MWh a year prob financial press, Feb 6, 2025.
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The province already has the case: the Rincón Lithium plant (Argosy / Puna Mining), 2,000 tonnes a year, was suspended by decision of its owners in July 2024 prob sector press on the companies' announcement, 28-07-2024, and the company reported that it remained suspended in its quarterly report of 31 July 2026 verif Argosy Minerals quarterly report, 31-07-2026, against the backdrop of the roughly 80% fall in the lithium price.
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Its 100 MW in grinding alone -two 28 MW semi-autogenous mills and two 22 MW ball mills at 40 million tonnes per year verif First Quantum's presentation of the Taca Taca technical report, 19-02-2026- are one of the largest power figures in the province and are not a market for this niche: the project is fed by a new 122.5 km line tied into the 345 kV grid verif ídem.
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Ganfeng invested USD 190 M in the Mariana solar park, the largest in the province verif official note from the national Secretaría de Minería, 12-Feb-2025, and resolved it with its own chain, without a tender in Salta unconf no source was found saying so.
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See the remaining 5 risks
49% of this market is assembly and construction of new generation estim our own calculation, and it switches off with the works: Rincón has a legal investment deadline of 30 June 2029 verif Res. 735/2025, Diablillos builds if it decides to invest in 2027 and Sal de Oro II has already finished its own.
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The repair of infrastructure works or networks pays 5.00% turnover tax on gross revenue, twice as much as building them (2.50%) and more than the 3.60% of mining support services verif Annex I of the schedule, codes 422200 note 2 —repair of electricity, gas, water and telecommunications distribution networks— and 429090 note 2 —repair of civil engineering works—.
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The province's largest generation asset is published in a unit that does not apply to what it measures: 288 MWp of batteries verif the company's project page.
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Local press recorded conflicts at Tolar Grande over service contracts and over local hiring, not environmental ones: in July 2025, over the replacement of the service company at Lindero's camp and the demand for local employment prob Salta mining press, 29-Jul-2025.
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The Supreme Court took original jurisdiction on 16 October 2025 in the amparo brought by Kolla and Coya communities of the Salinas Grandes-Guayatayoc basin, and deferred the decision on the injunction seeking to suspend permits verif Supreme Court resolution, 16-Oct-2025.
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The opportunity in depth
The opportunity in depth
Panel cleaning and thermography, as a subcontractor to whoever holds the contract today — low capital, a fast first invoice and no approval process of your own. It is the service the international cost model explicitly names within fixed maintenance, and the one nobody wants to do at 4,000 meters. It is the door that finances year one and the one that shows you the site from the inside. It is worth not confusing market with workload: the TAM counts Mariana's 120 MW and Lindero's 6 MWp, and leaves out — rightly — the 208 MWp of the commercial park at Olacapato, which already has an operator and a twenty-year contract verif. But that park is some 60 kilometers away and calls for exactly the same crew: it does not enter the addressable market and it does enter the calculation of who you will compete with for the technician — it is the largest photovoltaic operation among those we identified in the Salta Puna.
Settling the tax classification before signing — zero capital and it is the niche's margin play. The provincial schedule has a line for network construction, one for network repair and one for mining support services, and none of the three names the maintenance of a generation plant. Do it before quoting and not after: once the price is signed, the extra point cannot be passed on to the client.
Battery health and medium voltage — the technical step and the one that separates you from the generic competitor. The international model allocates 2.5% of capital per year to storage and includes module replacement there: it is a market that grows on its own as the banks age, and today it has no declared local supply. It requires instruments and trained people, not scale.
Electromechanical installation as a subcontract to the main contractor — the high ticket, and it is won underneath whoever won the works, not by arguing over it. It is the route by which the local content law admits an outsider: a joint venture with a Salta partner from 30%. But the partner has to be verified before signing, and the reason is concrete: the law requires the local partner to be listed in the register, and of the six Salta metalworking firms named as the sector's natural partners, with the full register read on 16 Oct 2026, only two appear; a third appears under a different corporate name and three do not appear under any similar name. Not being registered does not mean they do not exist: it means the requirement is not met with them until they register, and that is checked in the register before forming the partnership. It also works out on the tax side, which in this niche runs backwards: this product is invoiced at 2.50% turnover tax as network construction, the cheapest of the lines this niche can fall into verif.
Gas connection engineering — the bet with a clock, and the clock is not controlled by whoever invests: the window closes when the transmission line reaches the salt flats. There are 321 kilometers of gas pipeline already laid to the puna and at least one operator working to switch its dual-fuel power stations to gas, but there is no published tariff for the service and no observed contract.
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When you get paid, and what blocks it
already in
split
An Argentine company founded in 1936 prob. It built Lindero's hybrid system, the first hybrid mine in the Argentine Puna: 10,908 bifacial panels for 6 MWp prob, 12 MWh of batteries, 30 conversion units and 2 substations, at 3,800 m above sea level prob, with a plant controller designed by its own Argentine engineering team prob.
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Mariana operates 100% off-grid with 120 MW of solar and 288 MWp of batteries verif, and the solar infrastructure declares USD 190 M within the project's USD 980 M verif.
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It plans a liquefied natural gas regasification plant, still under study, and a 15 MW solar plant that would cover around 31% of the project's energy.
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It is one of the province's four lithium plants in production and it was not possible to determine what powers it — whether diesel, gas or grid unconf. What is documented is that in February 2026, still in its ramp-up stage, its production was affected by limited supply at its gas plant and by equipment maintenance, according to the company's own report verif. That sentence is the best proof of demand for this niche that exists in the province: firm energy is what holds production back.
See the remaining 5 players
208 MWp, 650,000 MWh a year, with a 20-year contract to sell to CAMMESA verif, 554,580 panels over 350 hectares prob. It is not mining self-generation: it is a commercial park that already has an operator and a signed contract, and counting it in a market for mine plant maintenance would be inflating. It matters anyway for two reasons: it is some 60 kilometers from the salt flat corridor unconf and competes for the same technical crew, and it is the largest reference for the scale of photovoltaic operation that we identified in the Salta Puna.
It built Rincón's camp for Rio Tinto: 26,000 square meters in 18 two-storey buildings, with a kitchen sized for more than 2,000 people, at 3,600 m above sea level and in the 2025-2026 window, with own generation of 4.4 verif. Note the unit: the source writes 4.4 MV, and MV is not a unit of power — it will be MVA or MW. It is an error of the source that is not corrected here, only flagged. What matters about the case: it is the counter-example to the idea that generation always comes imported, because here the package was delivered by a Salta firm.
Three transmission line projects competing for the same corridor: Genneia, which together with the provincial distributor EDESA presented a line of more than USD 400 M to supply 2.6 million MWh a year prob; Central Puerto with YPF Luz, which in January 2025 agreed to study a line of some 140 kilometers extendable to 350, with an investment of USD 250 to 400 M depending on the final scope verif; and the national State, which in May 2025 declared the 500 kV Chaparro – Antofagasta de la Sierra – Punta – Cobos line a priority, to be built under a public works concession verif; the national electricity transmission works plan of August 2026 lists the same work as Chaparro – Antofagasta de la Sierra – La Puna verif. None is under construction as of August 2026. When any of them arrives, mine-site generation goes from being the system to being the backup.
The provincial registry of local suppliers to mining companies classifies its roll with 24 labels and none of them is energy verif. There are labels for catering (45 registrants as of 16-10-2026), drilling (25), fuel (13) and even vehicle sales (7), but not for energy verif. The mining suppliers' chamber, which is a different roll, does have the category: 4 members out of 311 as of 16-10-2026 verif. They are four companies in the category verif. Outside that category, three more members declare generator sets or pumping, and one declares supply of electrical materials verif. Two consequences, and both matter: an entrant does not find the energy label and registers under Services (378 registrants) or Engineering (131) verif, and the buyer cannot search for it by its speciality; and although an enrolled supplier's invoice still counts toward the mining company's local procurement, the province cannot measure how much of that local procurement is energy thesis.
The Diablillos pre-feasibility study budgets ancillary services personnel at 0.24 dollars per tonne milled, USD 10.1 M over the mine life verif, as in-house staff. Not the whole energy system of a mine is outsourced, and a competitive map that does not say so is selling a bigger market than there is.
The jobs it createsIt is a niche of few people and high qualification - the opposite of the camp, and it has to be said that way rather than selling mass employment that is not there. La lectura completa para el que busca trabajo, en la hoja de este nicho para la gente →
calculate it
The number is our own estimate. The calculation, step by step, is below.
The full calculation, step by step
Concentration Three levels with opposite structures, and the entrant picks the wrong level if it does not separate them.Level 1 - assembly and construction of new generation (49% of the market): concentrated. A single identified name with completed, documented mine generation work in the Salta Puna, plus the Asian operators' own chains, which own most of the installed capacity. There is no public register of awards, so any percentage would be invented; what can be stated is that of the generation projects with a known builder, there is only one with a public project sheet.Level 2 - recurring maintenance (30% of the market): unknown structure on the large asset, and that is the gap. It does not appear in any open source who operates Mariana's 120 MW today: it may be the operator itself, it may be whoever installed it, it may be staff brought in from outside. At Lindero, by contrast, it DOES appear, and maintenance was awarded within the same package as the construction: those 6 MWp already have an owner and do not come back to the market. The remaining unknown — the province's largest asset — is exactly what makes the directly attackable market move between 25% and 40% of the total, and it is not resolved with more searching: it is resolved with two phone calls.Level 3 - grid and transmission: a regulated monopoly plus three private developers competing for the same route. The provincial distributor, the regional transmission company, the national dispatcher and the regulator that authorizes any transmission work with a certificate whose processing can take up to two years. It is not a market for an SME entrant, but it is what sets the expiry date of part of the niche.And gas conversion has no identified local supply: no Salta company was found on any roll declaring industrial gas connection engineering or regulation and metering stations. The system's players are the provincial company that owns the pipeline, the gas distributors and the national sector regulator.Beware the easy reading: of the 91 categories the industry surveys, 73 have local supply in Salta and 18 do not — and the 18 are heavy machinery, mills and crushers, not this. This niche's gap is NOT one of electrical companies existing: it is one of specialization, of altitude accreditation and of the category having no box to declare itself in.
The rule that moves it
No rule creates this niche's demand — the megawatts already spinning create it — but two define how much is left after tax and who can bill it, and in this line of business that weighs more than in any other.
See the underlying reading
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 RIGI promise is keptSee the full legal grounds
See the full legal grounds
See the full legal grounds
Where the number comes from
The published midpoint is ~USD 14 M/year and the band runs from 9 to 29. It is more than three times as wide between floor and ceiling, and the reason is declared: two of the three blocks depend on decisions not yet taken — an expansion with no announced date and a conversion with no published tariff — while the perpetual block, which is the firmest, is also the smallest.
See the calculation, the variables and how it was validated
The calculation is installed capacity times an annual maintenance ratio, done separately for three markets with different tempos and summed at the end. It was not derived from any percentage of capex, and there is a concrete reason: the line that looks like the market —the cost of generating— is on the order of sixty times larger than the real market, and using it would have made a still-unbuilt project worth more than the whole province.
Robustness check, and it starts with what fell through. (a) There is no Salta anchor for the ratio, and it is worth saying first. With the full releases of the June 2026 definitive feasibility study and of the previous study opened, neither contains a generation maintenance line: their operating cost tables have three and four rows, and none is energy. Two points remain, both external: the US laboratory model at 24,000 dollars per MW per year and distributed generation in another province at 20,000. They are within 20% of each other and they bracket the adopted floor of 21,000, so the floor holds, but on two anchors from outside the province. The 35,000 ceiling still has no support point at all. (b) The same ratio read as a percentage of capex, with two different capex figures. If annual maintenance is a percentage of what it cost to install, the ratio per MW depends on what an installed MW costs, and there are two measured prices for that: the urban one, USD 900 per kW turnkey, and the Puna one, USD 190 M for 120 MW, that is USD 1,583 per kW, 76% more expensive. Applying the same percentage to both, the ratio should fall between 18,000-22,500 (urban) and 31,700-39,600 (Puna): the published band of 21,000-35,000 sits almost exactly between the two. (c) What the calculation does not yet incorporate, declared so it does not pass as verified: the definitive study calculates the silver project's cost with diesel gensets for three years and then grid, where the 2025 technical report planned a hybrid plant with solar panels, and its investment decision slipped to the second quarter of 2027. Both shrink the installation block and push its maintenance outside the window this market measures.
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
The ratio that decides the whole calculation —what it costs to maintain an installed megawatt per year— is not published either in Salta or in the country, so it was built through routes that do not touch each other and then checked for convergence. And what does NOT support it has to be stated first. The two releases of the project in the Salta puna itself —that of the June 2026 definitive feasibility study and that of the earlier study— were opened in full and neither publishes a generation maintenance line: their operating cost tables have three and four rows respectively, and none is power generation. The figure may live in the full technical report, which is not open, but as long as it cannot be shown it supports nothing: there is no Salta anchor for this ratio. What does support it is two points: the cost model of the United States national renewable energy laboratory, which sets fixed maintenance of an industrial photovoltaic plant at twenty-four dollars per kilowatt per year and explicitly includes asset management, insurance, site security, *cleaning*, vegetation control and component failure; and the twenty dollars per kilowatt per year of distributed generation in another province. Both come from outside Salta —one from another continent and one from an urban market—, so the floor of the band holds, but not on a Puna data point. And the silver project's physical assumption changed from one study to the other: the 2025 technical report planned a hybrid plant with solar panels, batteries and gensets, and the definitive study calculates its cost with *«diesel generators for power supply until the third year of operation, when a connection to the lower cost national grid is anticipated»*. That project's megawatts are different equipment, different instruments and a different price, and the calculation does not yet count them that way: it is declared. Three further assumptions are declared, and all three narrow downward and not upward — each is written at the foot of its variable: three plants in operation enter at zero, the construction package enters only through its service fraction, and the gas conversion block has no anchor of its own. None was filled in with the comfortable assumption. Left out, finally, is the area's commercial solar park: it has a twenty-year contract to sell its energy and is not mine self-generation.
Coverage: the compulsory provincial register of mining suppliers (RPPLEM), with 603 suppliers as of 16-10-2026 and 24 controlled categories —none of them energy—, searched by company name as well, and the six Salta metalworking firms in the category checked one by one · Oct 16, 2026 · not reviewed: no operator publishes who it awarded the operation and maintenance of its generation to, and the registry category is declared by the registrant itself: counts by label are a floor and not a census
How to cite this figure: Despegue (2026). High-altitude energy: maintaining the solar and the batteries already installed in the Puna · Salta. despegueargentina.com/en/salta/operacion-mantenimiento-generacion-boca-mina · terms of use
Neighbouring marketsOne market in the same group, from USD 25 to USD 39 M a year
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