The Challenge

RER Energy Group was tasked with reducing electricity costs and optimizing energy use at a manufacturing facility in Cuautitlán Izcalli, Mexico. Despite having a 550 kW solar PV system, the facility faced high peak demand charges and suboptimal battery dispatching, limiting potential savings. Adding complexity, the local utility’s demand averaging method differed from standard practices abroad, requiring a solution that could adapt. To resolve these challenges, the facility needed an energy storage system (ESS) with advanced control software to manage peak-period energy use more effectively.

The Solution

RER Energy Group partnered with Energy Toolbase to deploy an ESS integrated with ETB Controller and Acumen AI™ , using a manual scheduled dispatch strategy. The project included installing a 1,290 kW/2,064 kWh 2-hour Hoy Power unit alongside the existing PV system. This setup allows the customer to schedule battery charging and discharging based on site needs, with the flexibility to manually dispatch using a constant set-point control mode. Energy Toolbase tailored the system to align with the local demand averaging method, ensuring accurate and effective management. To ensure consistent bill savings modeling, Energy Toolbase aligned monthly demand reduction with the ESS’s maximum power output. This strategy simplifies customer expectations by delivering predictable monthly reductions. Real-time monitoring through ETB Monitor ensures the system operates efficiently and enables ongoing
 adjustments to maximize performance and savings.