High-altitude power solutions | Aggreko

High-altitude power solutions in Peru

Situation

Located high up in the eastern slope of the Andes, rests the ancient Inca capital of Cuzco in Peru. With a population of over 435,000 people the UNESCO listed town is situated 3,400 m above sea level.

Interconnection work was required between the Machu Picchu power station and the Santa Teresa hydroelectric plant. To complete it, power generation from the Machu Picchu power station needed to be suspended for approximately 45 days. This interruption to operations would restrict energy supply for local consumers.

To maintain supply and avoid the risk of sudden energy rationing in the city of Cuzco, the government of Peru authorised the energy companies to hire temporary power systems from Aggreko. The requirement was for two separate installations: one of 20 MW and one of 10 MW.

Solution

The project provided several key challenges.

Equipment needed to be mobilised within a short time-frame. Our logistics team sourced the equipment from the Panama hub, ensuring quick delivery.

For the site requiring 20 MW, Aggreko used 25 diesel-powered generators, five 6.3 MVA transformers and six 20,000 L fuel tanks. For the 10 MW generation solution, it was necessary to use 15 diesel-powered generators, three 6.3 MVA transformers and three 20,000 L fuel tanks.

The kit was shipped by sea to the Port of Callao and transported by land over 1105 km through difficult terrain. The compact nature of the 20 ft containers (housing the generator) meant greater maneuverability and access to the region. Subsequently the equipment was delivered to site in just 5 days.

The high altitude of the location required equipment able to perform and endure the toughest conditions. Typically, a reciprocating engine would factor in a derate on output at 10% for every 1,000 m. Through the innovative design and quality of manufacturing, Aggreko managed to deliver the projects with only a derate of 10% for both sites overall - all at 3,400 m altitude. This translated directly into significant savings for the client.

Aggreko was also responsible for other aspects of the project, including support, consultancy and information for the preparation of the Project Environmental Impact Assessment, and securing the generation permits.

Why was Aggreko chosen?

Aggreko was awarded the contract after a public bidding process. The decision was based on its reputation as a world-class leader in the supply of temporary power solutions, the proven reliability of its equipment and fast-track implementation that guaranteed a constant flow of energy. This was particularly important as it enabled the client to avoid outages or low levels of supply.

Aggreko's ability to develop flexible solutions for demanding operating conditions was another key factor in the selection decision. Aggreko also supplied a team of highly skilled engineers who were available 24/7 on-site to provide their expertise throughout the project.