• South America
ARE Member:

Case study 20 December, 2022 Battery / Energy StorageInverters / Power ComponentsSolar PV Telecom Micro/Mini-grid

Studer Innotec – Telefónica (Peru)

Who, What & Where

  • Studer Innotec
  • Telefónica upgrades to renewable energy-based equipment
  • Peru

The Company

Telefónica S.A. is a Spanish multinational telecommunications company, headquartered in Madrid, Spain. The company is ranked as the most important telecommunications company in Europe and the fifth in the world.

Q-Energy Peru, is a Peruvian company that has been developing renewable energy projects for eight years, mainly with photovoltaic energy. “Since our foundation, we are very interested in innovation and in developing projects that allow our customers to capitalise on their investments on the short term. For Telefónica, we tailor made solutions for the stations in accordance with their different energy requirements and found an important partner in Studer,” Aldo Rosas, Project Manager of Q-Energy.

The Challenge

For the past six years, Telefónica one of the largest telecommunications companies in the world, has actively been working on reducing the diesel consumption of its base stations around theworld. They have taken several initiatives in this direction such as replacing the old telecommunications equipment with modern electronics, to use renewable energy, mainly solar power, to generate energy and to use deep cycle gel batteries to create hybrid systems.

Renewable Solution

As the base stations used diesel generators for energy supply previously, it was a natural step forward to create hybrid solar systems. In these systems, renewable energy is generated in the solar panels, stored in batteries and managed by the inverter/chargers. The diesel generators are mainly used for backup.

By using Studer’s highly efficient “battery priority function”, which gives priority to using renewable energy, Telefónica has drastically reduced the generator running times, saving diesel and improving generator lifetime. In some cases they have even completely removed the diesel generators and relocated them to other base stations.
System components

  • Solar modules: Polycrystal Solar Modules YINGLI, 85 Wp, 12 Vdc
  • Batteries: Sonnenschein, Línea A602 Solar
  • Inverter / Chargers: Studer Xtender XTM 4000-48, 230 Vac, 60 Hz
  • Solar charge controller: VarioString Studer VS-70
  • Other: Studer RCC-03, Studer BTS-01, Studer Xcom-LAN, Studer BSP 500

Project Outcome

The savings due to the reduced use of diesel has allowed Telefónica to recover the investment cost in less than two years. As there is currently more energy available, the base stations have the possibility to install more telecommunications equipment.