Comoros Inaugurates 20 MW of Solar With 16 MWh Battery Storage
Comoros has inaugurated three solar plants totaling approximately 20 MW alongside 8 MW/16 MWh of battery storage and 30 kilometers of medium-voltage lines.
Published · 4 min read
The Union of the Comoros inaugurated a Comoros solar storage project on September 6 comprising three solar plants across Grande Comore, Anjouan and Mohéli, together with battery systems and new medium-voltage lines intended to improve electricity reliability and reduce the island country’s dependence on imported diesel.
The installations provide approximately 20 MW of solar capacity and 8 MW/16 MWh of battery storage. Technical studies cited by the project partners estimate annual generation of 33.75 GWh, equivalent to about 13.3% of the country’s 2024 electricity demand and 22.5% of the electricity actually generated that year.
Solar plants are operating across three islands
The official Masdar inauguration announcement identifies a 12.86 MW solar plant on Grande Comore, a 4.05 MW facility on Anjouan and a 3.1 MW installation on Mohéli.
The figures total approximately 20.01 MW. Masdar describes the portfolio as approximately 20 MW because the individual project ratings and total are presented with limited precision.
PV Magazine independently confirmed that the three projects have been switched on and reported the same island-level capacities, battery configuration and transmission-line scope.
The development is considerably larger than a residential or community mini-grid, but it addresses many of the same challenges faced by island energy systems. Microgrid Media has previously examined how solar, storage and grid controls can reduce island dependence on imported fuel.
Battery storage and power lines are central to the project
Battery systems with combined power output of 8 MW and energy capacity of 16 MWh were installed across Grande Comore and Anjouan. At their aggregate maximum output, the published ratings imply a nominal duration of two hours.
The announcement does not disclose how the capacity is divided between the two islands, the battery chemistry, equipment suppliers, operating reserve or dispatch strategy. The batteries therefore should not be described as providing two hours of backup to either island individually.
The project also includes approximately 30 kilometers of 20 kV medium-voltage overhead lines. That infrastructure matters because adding generation alone does not ensure electricity can reach population centers or be integrated reliably into existing island networks.
Microgrid Media’s reporting on Tata Power’s commissioned solar-and-storage project in Rajasthan provides another example of renewable infrastructure being paired with batteries and grid-support equipment rather than developed as standalone generation.
The portfolio could materially increase available generation
Comoros recorded electricity demand of 254 GWh in 2024 but generated approximately 150 GWh, according to the official UAE government account of the project. The country also experienced approximately 3,000 power outages during the year.
Imported diesel accounted for an estimated 91% of the national energy mix. That dependence exposes electricity production to fuel-import costs, shipping constraints and international price changes.
If the plants produce the forecast 33.75 GWh annually, they would add output equal to approximately one-fifth of Comoros’ reported 2024 electricity generation. Actual production will depend on solar conditions, equipment availability, curtailment and the ability of the local grids to absorb the electricity.
The broader energy-access challenge resembles conditions across other developing markets where distributed renewables can supplement constrained grids. Microgrid Media’s overview of renewable electricity access in sub-Saharan Africa explains the role that solar, storage and smaller power networks can play where conventional infrastructure remains limited.
ADFD financed the AED84.4 million development
The Abu Dhabi Fund for Development financed the project at approximately AED84.4 million. Masdar led implementation, while Global South Utilities is responsible for managing the facilities.
The announced financing covers a portfolio rather than a single plant. Public disclosures do not provide a site-by-site cost breakdown or separate the investment allocated to solar arrays, batteries and power lines.
The inauguration moves the portfolio into the operating phase, but it does not by itself establish long-term generation, battery availability or reliability performance. Those outcomes will require operating data following commissioning.
The facilities have not been identified as microgrids
The project incorporates solar, storage and network infrastructure across island electricity systems, but the available announcements do not identify microgrid controllers, black-start capability or the ability of individual facilities to form and operate an electrically isolated local grid.
The Comoros solar storage project should therefore be described as an island solar-and-storage portfolio rather than labeled a microgrid without additional technical evidence.
The next meaningful indicators will include measured solar generation, battery dispatch, reductions in diesel consumption, and changes in outage frequency after the new infrastructure has operated through representative seasonal conditions.
