Estonian energy company Diotech has installed a pilot battery storage system at Ülemiste City, the country’s largest business campus. The system is designed to make electricity use within the internal grid more efficient and to enable participation in the power exchange. 

“Ülemiste City is a smart business hub, and intelligent energy management ensures supply security, helps keep costs under control, and supports the achievement of climate goals,” said Sten Pärnits, Chairman of the Management Board of Mainor Ülemiste. “Battery storage technologies bring significant benefits to the commercial real estate sector, both economically and environmentally, while also contributing to the development of smart buildings to ensure maximum energy efficiency,” he added. 

Battery storage helps balance and optimize electricity use in the internal grid, creates opportunities for trading on the power exchange, and strengthens supply security. In addition, the system will participate in the frequency reserve market. 

“We installed a 1 MW / 2 MWh battery at Ülemiste City with the main goal of identifying the potential of a battery park and helping the business campus determine how and under what conditions it would make sense to expand such capacity in the future to improve energy efficiency,” explained Raivo Videvik, CEO of Diotech. 

Acting as the system integrator under contract, Diotech delivered a turnkey solution and will also be responsible for ensuring its reliable operation going forward. 

“While this was a relatively small-scale project for us, it provided valuable experience in integrating a battery system into the established energy infrastructure of a functioning business campus. Considering that electricity is a major cost component for most companies, optimizing its use is an area where everyone can take a cue from Ülemiste City,” Videvik added.