Project Background

This project is located at a solar park in Byalo Pole, Bulgaria. The installation was carried out in partnership with Elcom Stroy (alongside Mr. George and the Elcom Stroy team in Bulgaria). The site features a 1,000 kWp PV system spread across three arrays (two of 400 kWp and one of 200 kWp) tied to a 400 V AC bus.

Challenge

Integrating large-scale solar generation from multiple arrays (1,000 kWp total) introduces intermittency and fluctuations in power supply. The site needs an efficient storage solution to capture generated solar energy, smooth out power output, and maximize renewable energy utilization without overloading the local connection.

Solution

To address this, the project deploys a modular energy storage system built in two stages utilizing E-MATE 125-261-L liquid-cooled cabinets:

• Staged Installation: Stage one is live with 5 cabinets providing 1,306.25 kWh of capacity. Stage two will add another 5 cabinets, bringing the site to a total of 10 cabinets in parallel (2,612.5 kWh), which is the maximum capacity the platform takes on the AC side.
• On-Site Setup: The battery cabinets stand at the edge of the field on individual concrete plinths alongside the arrays and are cabled back to the same point.