Petroleos Mexicanos (Pemex) and its affiliate Pemex-Refinacion (PREF) have filed a lawsuit in New York seeking to recover nearly $160 million from Siemens and SK Engineering & Construction Co. Ltd. (SKEC) in a global bribery case. According to the amended lawsuit, filed May 8, 2013 in U.S. District Court (case number 12 Civ. 9070 [LLS] ECF), Siemens and SKEC allegedly submitted an unrealistically low bid in 1996 to win a public contract for modernizing a Pemex refinery in Cadereyta, Mexico. In testimony given May 6, 2013, at Mexico's Solicitor General's Office, Peter Paul Muller, Siemens Mexico's former general counsel confirmed that Siemens paid bribes to PEMEX officials connected to the Cadereyta Project cost overruns. He added that there are other witnesses with knowledge of the facts related to the lawsuit.

A total of 800 Siemens contract workers at Andina, a copper division operated by Codelco, started to strike on 14 May 2013. The Siemens workers are carrying out maintenance at Andina. The road to Mendoza in Argentina, was blocked, whilst buses transporting workers were prevented from leaving the depot. No agreement was reached over collective contract negotiations. Average salaries are CLP 450,000 (EUR 731.72).

Siemens has signed 15-year contract extensions with RES Americas to continue providing service and maintenance at two wind projects in North America. Siemens will provide long-term service for the 26 SWT-2.3-93 wind turbines operating at RES Americas' Whirlwind Energy Center. Long-term service will also be provided by Siemens for the 72 SWT-2.3-93 units in operation at RES Americas' Hackberry Wind Farm. Both projects are located in Texas, U.S.A. The extensions will help both projects perform at high levels of efficiency and availability for years to come, and most notably, over the entire estimated 20-year lifecycle of the units. Siemens' advanced remote monitoring and diagnostics are included along with the company's Advanced Grid Performance (AGP) upgrade at both sites. Siemens' AGP upgrade comprises a series of tailored solutions that enable the wind park operator to comply with constantly evolving grid requirements.