Ethiopia: cheap hydro pulled miners in — then the grid pulled them back

Ethiopia is the clearest recent lesson that a low tariff is not a mining strategy. The country has enormous hydropower potential, a new mega-dam, and a state utility that for a window sold power to Bitcoin miners in hard currency. Miners came. Then the utility discovered that a load which looks like surplus in a spreadsheet can look like a political problem when reservoirs drop.

Why miners came

From 2023, Ethiopia licensed cryptocurrency mining through the Information Network Security Agency even while domestic crypto trading remained restricted. Operators — many foreign-owned — signed power-purchase agreements with Ethiopian Electric Power (EEP). Industry and local reporting in 2025 put operational demand in the hundreds of megawatts, with more firms waiting, at post-tax tariffs around 3.2–3.6 US cents per kilowatt-hour. For a global miner leaving China or shopping for the next cheap basin, that number was the whole pitch.

The Grand Ethiopian Renaissance Dam added a narrative of abundant future watts. Identified economically feasible hydro is in the tens of gigawatts. On paper, mining was “using surplus.” On the ground, only about half the population had electricity access, rural outages continued, and exports to neighbours still mattered to the utility’s hard-currency story.

What the utility actually got

Mining did generate foreign exchange. EEP’s own commentary and Ethiopian press in 2025 described hundreds of millions of dollars of FX from data-mining and related power sales over a short period, and a sharp rise in the utility’s foreign-currency earnings. By the 2025/26 discussion, Bloomberg and others reported that Bitcoin-mining companies accounted for about 35 percent of EEP’s revenue in the prior financial year while consuming on the order of a third of national generation — a figure that should make any plant board sit up, whether or not every decimal is later revised.

That is the seduction. A flexible industrial load pays in dollars, shows up faster than an aluminium smelter, and does not need a port. It is also the risk. Once miners are a third of your generation and a third of your revenue, you no longer have a side hustle. You have a new core customer whose product is globally priced and locally resented.

The reversal

In August 2025, EEP froze new power permits for data-mining firms and spoke publicly about winding the activity down. The Ethiopian Energy Outlook 2025, cited in local and international coverage, warned that crypto loads were on track to absorb a third of output and could compromise households and industry. CEO Ashebir Balcha described mining as a temporary FX measure, not a long-term plan.

In September 2026, the physical constraint arrived. Reduced inflows into hydro reservoirs — reported as an El Niño-linked dry season, with inflows down about 20 percent — led EEP to cut supply to miners to roughly 23 percent of contracted volume, a three-quarter reduction, to protect residential and industrial load. Dozens of PPAs had, on paper, committed the utility to very high delivery. Hydrology does not read the PPA.

The lesson for a generator

Interruptibility has to be in the contract before the first container lands. If mining is sold as “surplus and curtailed power,” then the miner must be first off when the dam is short — and the tariff should reflect that optionality. If mining is sold as baseload, it will compete with households, factories, and exports, and it will lose the political argument the first dry year.

• A 3-cent tariff with 23 percent delivery is not a 3-cent tariff.
• FX revenue is real. So is the accusation that the grid is mining while villages sit dark.
• GERD-scale capacity does not erase seasonal hydrology or last-mile access.
• Hosting client-owned machines can still make sense — if the plant, not the miner, controls the breaker.

NexusArc’s work with electricity producers starts there. We help you decide whether mining is flexible demand or a new firm load you cannot defend. We help you stand up your own machines, or host miners owned by our clients so you sell electricity, and we train staff to run the floor. We do not promise a Bitcoin price. We do not take over the plant. If mining does not improve the power asset, we say no.