Cuba Energy Crisis Explained: Blackouts, the Oil Blockade & the Solar Race (2026)
Why Cuba’s power grid keeps collapsing in 2026 — the fuel blockade, the aging plants, the foreign companies leaving and drilling, and the Chinese-backed solar buildout racing to fill the gap.
1. The Crisis at a Glance
Cuba is living through the worst electricity crisis in its history. The national grid has collapsed completely five times in 2026 alone, including twice in the second week of July. Between total collapses, most of the island endures rolling blackouts of 18 hours or more per day.
Key Takeaways
- Cuba’s grid suffered five nationwide collapses in 2026, the latest on July 14 — the third in ten days.
- At the April 2026 evening peak, the system generated roughly 1,278 MW against ~3,000 MW of demand — a deficit above 1,700 MW.
- A U.S. blockade of oil tankers bound for Cuba began in February 2026, after the U.S. intervention in Venezuela cut off Cuba’s main crude supplier.
- Sherritt International, Cuba’s largest independent power producer through Energas, announced in May 2026 it would surrender its Energas stake — removing the operator of ~10% of national capacity.
- China-backed solar parks added over 1,000 MW in one year; solar now supplies more than 20% of generation, up from under 6%.
This explainer walks through how Cuba got here. It covers the blackout timeline, the fuel blockade, the foreign companies exiting and drilling, and whether the solar buildout can outpace the grid’s decline. For the broader economic picture, see our Cuba economy explainer.
2. Blackout Timeline: 2024–2026
The current crisis began with the first total grid collapse in October 2024 and has accelerated every year since. Each collapse follows the same pattern: a large thermoelectric unit trips offline, the overloaded system cannot absorb the loss, and the whole island goes dark.
| Period | Event | Scale |
|---|---|---|
| Oct 2024 | First total collapse of the National Electric System (SEN) after the Antonio Guiteras plant failure; repeated collapses over several days | Nationwide |
| Nov 2024 | Hurricane Rafael knocks out the grid island-wide | Nationwide |
| Dec 2024 | Third total collapse of the year | Nationwide |
| Mar 2025 | Grid collapse leaves ~10 million people without power for days | Nationwide |
| Mar 2026 | National grid collapses; millions without power as fuel runs short | Nationwide |
| May 14, 2026 | Grid failure plunges the eastern provinces into a major blackout | Regional (east) |
| Jul 6–7, 2026 | Nationwide blackout — the third total collapse in six months | Nationwide |
| Jul 14, 2026 | Grid collapses again — the third blackout in ten days, fifth of 2026 | Nationwide |
The table lists the major documented events. Al Jazeera counts the July 14 failure as the third blackout in ten days and the fifth total collapse of 2026 — smaller intervening collapses in that stretch are folded into the July rows.
Between collapses, daily life runs on scheduled cuts — the apagones, as Cubans call the rolling blackouts. In some provinces, power is available for as little as two to six hours a day. Havana has been relatively protected, but even the capital now sees daily multi-hour outages.
3. Why the Grid Keeps Failing
Cuba’s grid is failing because old plants and scarce fuel have collided. Neither problem can be fixed quickly, and each one makes the other worse.
The three structural problems
- Aging thermoelectric plants. The backbone of the system is eight Soviet-era and post-Soviet thermal plants, most over 40 years old. They were designed for 25–30 year lifespans. Deferred maintenance means units trip offline constantly, and each unplanned shutdown damages the machinery further.
- Fuel scarcity. Cuba produces only about 40% of the fuel it needs. Domestic crude is heavy and sulfurous, corroding the plants that burn it. The rest must be imported — and imports are now blocked or unaffordable.
- No spare capacity. At the April 2026 peak, available generation was roughly 1,278 MW against ~3,000 MW of demand. With a deficit above 50%, there is no reserve margin. Any single unit failure cascades into regional or total collapse.
The floating Turkish power ships that once supplemented the grid have largely departed over unpaid debts. Distributed diesel generators sit idle for lack of fuel. That leaves the state utility (UNE) rationing what little the thermal fleet and the new solar parks produce.
4. The 2026 U.S. Oil Blockade
The energy crisis became an emergency in February 2026, when the United States began blocking oil tankers bound for Cuba. The blockade followed the U.S. intervention in Venezuela that ousted Nicolás Maduro — and with him, the oil-for-doctors arrangement that had supplied Cuba with subsidized crude for two decades.
Washington has pressured third-country suppliers as well. Tankers operated for Mexico’s state oil company Pemex have been turned back, and supplier countries have been threatened with tariffs. Russian and other cargoes now arrive irregularly, at premium prices Cuba struggles to pay in hard currency.
The result: the island that produces 40% of its own fuel must ration the remainder. Fuel goes first to hospitals, water pumping, and food storage. Power generation absorbs the shortfall — which is why blackout hours have lengthened even as new solar capacity comes online. For how the squeeze ripples through prices and daily life, see our peso black-market rate tracker.
5. Foreign Energy Companies: Sherritt Out, Melbana Drilling
Two foreign companies define Cuba’s energy sector in 2026 — one leaving, one doubling down.
Sherritt International & Energas: the exit
Sherritt, the Canadian miner behind the Moa nickel joint venture, has been Cuba’s largest independent power producer through its one-third stake in Energas S.A., a joint venture with Cuba’s state electric and petroleum companies. Energas operates 506 MW of gas-fired capacity — roughly 10% of national generating capacity, and among the grid’s most reliable units because they burn domestic natural gas rather than imported fuel oil.
On May 15, 2026 — two weeks after new U.S. sanctions measures — Sherritt announced it would seek to dissolve the Moa joint venture and surrender its interest in Energas. The Cuban state cannot readily replace Energas’s operational expertise or capital. Full details in our guide: Is Sherritt leaving Cuba?
Melbana Energy: the contrarian bet
Melbana Energy, a small Australian ASX-listed explorer, is the only foreign company actively developing new oil production in Cuba. Its onshore Block 9, northeast of Havana, produces from the Alameda-2 well in the Amistad Unit 1B reservoir — about 3,100 barrels in the December 2025 quarter, sold domestically to the Cuban state.
The 2025 Amistad-2 appraisal well found a high-quality but water-bearing reservoir, a setback. Melbana still plans further shallow production wells in 2026, with deeper targets awaiting joint-venture funding. The volumes are small against national demand, but every domestic barrel displaces a blocked import.
The wider foreign-investor picture is the same story: hotel operators, miners, and traders are scaling back — see China’s investment in Cuba for the main exception.
6. The Solar Buildout: Cuba’s Fastest Infrastructure Project
Solar power is the one part of Cuba’s energy system that is growing — fast. Between early 2025 and early 2026, Cuba connected 49 new solar parks with more than 1,000 MW of combined capacity, financed and equipped by China. It is one of the fastest solar expansions any developing country has achieved.
- Solar share of generation: from 5.8% in early 2025 to more than 20% in 2026.
- Record output: over 900 MW from solar for the first time on February 11, 2026.
- Pipeline: 92 parks (~2,000 MW) committed by 2028 — close to the entire working thermal fleet’s real output.
- Beyond the parks: ~10,000 Chinese-funded rooftop systems planned for isolated homes, clinics, and maternity wards.
The catch is timing and storage. Solar generates at midday; the grid collapses at the evening peak. Without large-scale batteries, the new parks shorten daytime blackouts but cannot stop nighttime collapses. Chinese-supplied storage is beginning to arrive, but the gap between a midday solar record and a 7 p.m. grid failure defines Cuban life in 2026.
7. Three Paths Out of the Energy Crisis: Which Can Work?
Cuba has three realistic levers to end the blackouts: repair the thermal fleet, restore fuel imports, or complete the solar-plus-storage buildout. They differ sharply in cost, speed, and who controls the outcome.
| Criterion | Repair thermal fleet | Restore oil imports | Solar + storage |
|---|---|---|---|
| Speed of relief | Slow — years per unit overhaul | Fast — weeks, if tankers arrive | Medium — parks built in months |
| Capital required | Billions Cuba doesn’t have | Hard currency per cargo, ongoing | Chinese-financed, largely committed |
| Exposure to U.S. pressure | Low (domestic) | Extreme — blockade directly targets it | Low — panels ship from China |
| Covers evening peak? | Yes | Yes | Only with batteries at scale |
| Verdict | Necessary but unfundable | Blocked by policy, not logistics | The only path currently moving |
When to bet on each: thermal repair matters if sanctions ease and financing appears; imports return only with a U.S. policy change; solar-plus-storage is the path Cuba is actually walking, because it is the only one a blockade cannot easily stop.
8. What the Energy Crisis Means for Travelers & Businesses
For travelers, the energy crisis is now the single biggest practical issue in visiting Cuba — bigger than crime or paperwork. Large resort hotels run on generators, but fuel rationing means even tourist zones see outages. Casas particulares in provincial towns can be dark most of the day.
- Check current conditions on our Cuba travel advisory dashboard before booking.
- Blackouts affect water pumping, refrigeration, and card payments — carry cash and water; see Is Cuba safe to visit?
- Varadero and Havana hotels have the most generator backup; rural guesthouses the least. Plan routes with our travel to Cuba 2026 guide.
For businesses and investors, the crisis is reshaping who operates on the island. Power-intensive ventures — mining, manufacturing, cold chains — face existential input risk, which is exactly why Sherritt’s exit matters beyond nickel. Companies screening Cuba exposure can use our public-company Cuba exposure checker.
9. Frequently Asked Questions
10. Sources
- NPR — Cuba’s power grid collapses and plunges eastern provinces into a major blackout (May 2026)
- Al Jazeera — Cuba sees nationwide power blackout for third time in six months (July 7, 2026)
- Al Jazeera — Cuba’s power grid collapses again, third blackout in 10 days (July 14, 2026)
- CNN — Cuba hit with nationwide blackout as US pressure continues (July 2026)
- CNN — Cuba’s solar revolution amid the US oil blockade (May 2026)
- Sherritt International — Operations update (February 17, 2026)
- Melbana Energy — Annual Report 2025 (Block 9 / Amistad development)
- TaiyangNews — Solar revolution in Cuba amid fuel shortage and nationwide blackouts