1. Aratu, Salvador, Brazil. 1056 MW

In the state of Bahia in eastern Brazil the region’s many waterways are exploited for hydroelectric power on a GW scale. The area boasts two large dams – the 1050 MW Sobradinho power plant (on the Rio Sao Franciso) which is about 320 km long and at 4220 m2 one of the largest reservoirs in the world, and the 465 MW Itapebi as well as several large dams on its borders and a host of medium sized and small run-of-river projects. In all it amounts to 2 GW, but significant variations in rainfall in recent years have necessitated the provision of support power, necessarily on a large scale.

The new plant is a 1000 MW+ project being built in the Aratu industrial complex near Salvador. It consists of 120 gensets powered by MAN?18V32/40 engines arranged in 6 units of 20 generating sets. Ground was broken in 2010 but the project is still under construction, 355 MW having been installed to date.

2. IPP3, Jordan. 573 MW

In October 2012 a consortium of Wärtsilä and Lotte Engineering & Construction of South Korea signed a contract with Amman Asia Electric Power to supply a 573 MW IPP3 power plant to be located at Al Manakher, 30 km from Amman. The value of the EPC contract is USD 552 million, of which Wärtsilä’s share is USD 334 million.

The plant will consist of 38 Wärtsilä 50DF multi-fuel engines. A ground beaking ceremony was held in April 2012 year, and the first phase was scheduled to be in commercial operation by February 2013, with the entire plant completed towards the end of that year. When completed, it will be the world’s largest tri-fuel power plant, capable of burning natural gas, heavy fuel oil and light fuel oil as its main fuels.

A 25 year Power Purchase Agreement with National Electric Power Company of Jordan (NEPCO) was signed in September 2012. Amman Asia Electric Power is owned by KEPCO, Mitsubishi and Wärtsilä.

3. Quisqueya I+II, Dominican Republic. 430 MW

The order for Quisqueya I, a 215 MW turnkey dual fuel plant intended primarily for natural gas firing, was placed by the Barrick Gold mining company in September 2011.

The €150 m contract for unit II, an identical facility to be located at the same site, was placed by Empresa Generadora de Electricidad Haina, the largest power generation company in the Republic, in December 2011. In each unit the 12 Wärtsilä 50DF generating sets run primarily on natural gas, but have the capability to switch to heavy fuel oil as needed. Both units were scheduled to be fully operational during the second half of 2013 to supply baseload electricity to the national grid.

The two power plants have separate owners, but are being constructed as a single unit, and can be operated from one control room. The combined I and II power plant complex was, in September 2011, the largest of its type ever ordered from Wärtsilä.

4. Boyuk Shor, Azerbaijan. 384 MW

In July 2012 Wärtsilä was awarded the contract to supply a complete gas fired power plant in Azerbaijan. In terms of output, it was the largest single power plant order that the company had received up to that time. On completion, the plant, which is located close to the capital Baku, will be operated by Azerenerji JSC, the state-owned utility.

Wärtsilä’s will supply 21 x 50SG engines running on natural gas, related auxiliaries and process equipment. The plant was scheduled to be operational in autumn 2013, and will supply electricity to the Baku regional grid.

5. Suape II, Brazil. 380 MW

The 380 MW Suape II power plant, which is equipped with seventeen 20-cylinder Wärtsilä 46F engines in V-configuration, was in 2012 the biggest plant built and completed by Wärtsilä. It was inaugurated at the end of December 2011.

As an intermediate load plant, Suape II will feed electricity to the national grid to balance the supply of hydro power. Hydro power accounts for some 90 % of Brazil’s electricity production, but is subject to fluctuations due to seasonal rainfall levels.

Wärtsilä signed a 3 year O&M contract, and its team will be permanently on site to operate and maintain the power plant.

6. Geramar I+II. 332 MW

The 331MW Geramar power plant is located in Miranda do Norte, a city of 15000 habitants in Maranhão, Brazil. The order was placed by Geradora de Energia do Maranhão, a consortium created by Grupo Servtec, Grupo Ligna, FIP Brasil Energia and Equatorial Energia S.A. Servtec and FIP, with the plant coming on line in 2010. Brasil Energia are also major stakeholders in other Wärtsilä installations in Brazil.

The contract called for a full EPC project consisting of two units, each with 19 Wärtsilä 20V32 engines, for the combined output of 331 MW. The engines burn heavy fuel oil of high viscosity and low sulphur content.

7. Sangachal, Azerbaijan. 298.8 MW

The contract was awarded to Wärtsilä by Azerenerji OJSC (State Electric Company of Azerbaijan), in December 2006, for power plant desgin and supply, and other principal equipment and all building materials, as well as undertaking supervision of the building and equipment installation.

Originally scheduled for completion in 2008, the plant reached full production on 24 December 2012 when Wärtsilä and ABB finished commissioning the plant.

The station consists of 18 x 50DF modular generators each of 16.6 MW capacity. The engines can run on heavy or light fuel oil, or natural gas.

8. Coloane A, China, 271.4 MW

The Coloane A power station is a diesel-fired power station in Macau, China and is the largest power station in the region. Its installed capacity makes up 58% of Macau’s total. In 2012, it generated 98% of total electricity production in Macau.

It is a combined cycle unit consisting of six Mitsui MAN Diesel & Turbo diesel engines (2 x 9K80MC-S (24 MW), 2 x 12K80MC-S (37.4 MW) and 2 x 12K90MC (51.5 MW), and two 20 MW Peter Brotherhood steam turbines. First operation was in 1987, with new engines added in stages until 1996.

9. Aliaga Alosbi I+II, Turkey. 270.6 MW

This combined cycle facility operated by Aliaga Çakmaktepe Enerj Üretim has reached its total of 270.6 MW in stages, in two main phases. For both phases the supplier was Wärtsilä. The first configuration consisted of 4 x 17MW 18V46 HFO engines in CHP mode, coming on line in 2007. Output was and is primarily for the Organize Sanayi Bölgesi (ALOSBI) industrial zone about 65 km from Izmir city.

The second phase was opened on 29 September 2010 as the largest gas engine power station in the world, with 28 x 8.7 MW 20V34SG units fired by natural gas and 2 x 13.5 MW steam sets, also in CHP mode. Six engines came online with the balance to follow when the required transmission links were completed.

10. Pavana III, Honduras. 267.2 MW

This oil fired facility came on line in 2004. It is operated by Luz y Fuerza de San Lorenzo SA. The project originated with Empresa Nacional de Energía Eléctrica’s 2001 tender for 210 MW for 12 years.

In November 2002, ENEE awarded the PPA to Lufussa, and in January 2005 the plant was officially inagurated – 12 months ahead of schedule – by Honduran president Ricardo Maduro.

It was Wärtsilä’s largest project to that date and cost $190 million. Pavana III was one of the first installations equipped with a condition-based maintenance (CBM) system connected online to Wartsila’s CBM centre in Vaasa, Finland.

Table of recip-based power plants of 80MW or more, operating or under construction