The Puerto Rico – Fonroche/Schneider Electric – BESS is a 19,000kW energy storage project located in Humacao, Puerto Rico.

The electro-chemical battery energy storage project uses lithium-ion as its storage technology. The project was announced in 2015 and was commissioned in 2016.


The Puerto Rico – Fonroche/Schneider Electric – BESS is owned by Puerto Rico Electric Power Authority (100%).

The key applications of the project are frequency regulation, ramping and voltage support.

Contractors involved

Puerto Rico Electric Power Authority has delivered the battery energy storage project.

Additional information

This project in Puerto Rico is located in an area that has a weak grid with high renewable energy penetration. The goal of installing an energy storage solution is to allow a higher penetration of intermittent renewable energy sources without compromising the grid stability. The installation will be for a 40 MW PV power plant including 27 of Schneider Electric’s PV Box ST (1.36 MW) and 9 of the ES Box ST (2 MW), along with a 19 MWac Li-ion battery storage. The energy storage applications for Puerto Rico project include sub-second frequency regulation, voltage regulation, and power ramping to smooth active power injection during rapid PV power fluctuations.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.