Today headquartered in Munich and Berlin, Siemens and its subsidiaries employ approximately 320,000 people worldwide and reported a global revenue of around €78 billion in 2023.

In 1881, a Siemens AC Alternator driven by a watermill was used to power the world's first electric street lighting in the town of Godalming, United Kingdom.

[23] During the final years of World War II, numerous plants and factories in Berlin and other major cities were destroyed by Allied air raids.

[67][68] On 11 February 2003, Siemens planned to shorten phones' shelf life by bringing out annual Xelibri lines, with new devices launched as spring -summer and autumn-winter collections.

(Wind energy),[85] Power Technologies Inc. (Schenectady, USA, energy industry software and training),[86] CTI Molecular Imaging (Positron emission tomography and molecular imaging systems),[87][88] Myrio (IPTV systems),[citation needed] Shaw Power Technologies International Ltd (UK/USA, electrical engineering consulting, acquired from Shaw Group),[89][90] and Transmitton (Ashby de la Zouch UK, rail and other industry control and asset management).

Following the investigations, Siemens settled in December 2008, paying a combined total of approximately $1.6 billion to the US and Germany in what was, at the time, the largest bribery fine in history.

Siemens admitted to violating the accounting provisions of the Foreign Corrupt Practices Act, while its Bangladesh and Venezuela subsidiaries pleaded guilty to paying bribes.

He disclosed that he had managed an annual global bribery budget of $40 to $50 million and provided information about the company's 2,700 worldwide contractors, who were typically used to channel money to government officials.

Notable instances of bribery included substantial payments in Argentina, Israel, Venezuela, China, Nigeria, and Russia to secure large contracts.

[103] According to the commission, "between 1988 and 2004, the companies rigged bids for procurement contracts, fixed prices, allocated projects to each other, shared markets and exchanged commercially important and confidential information.

In March 2007, a Siemens board member was temporarily arrested and accused of illegally financing AUB, a business-friendly labour association which competes against the trade union IG Metall.

[107] In October 2007, a court in Munich found that the company had bribed public officials in Libya, Russia, and Nigeria in return for the awarding of contracts; four former Nigerian Ministers of Communications were among those named as recipients of the payments.

In a press release published that month, Peter Löscher, president and CEO of Siemens AG said: "This investment is another consequential step in further strengthening our green and sustainable technologies".

[121][120] In March 2011, it was decided to list Osram on the stock market in the autumn, but CEO Peter Löscher said Siemens intended to retain a long-term interest in the company, which was already independent from the technological and managerial viewpoints.

Siemens chose the Hull area on the east coast of England because it is close to other large offshore projects planned in coming years.

[127] In June 2014, Siemens and Mitsubishi Heavy Industries announced their formation of joint ventures to bid for Alstom's troubled energy and transportation businesses (in locomotives, steam turbines, and aircraft engines).

[131] In November 2017, the U.S. Department of Justice charged three Chinese employees of Guangzhou Bo Yu Information Technology Company Limited with hacking into corporate entities, including Siemens AG.

[137] In September 2019, Siemens and Orascom Construction signed an agreement with the Iraqi government to rebuild two power plants, which is believed to set up the company for future deals in the country.

[140] In January 2020, Siemens signed an agreement to acquire 99% equity share capital of Indian switchgear manufacturer C&S Electric at €267 million (₹2,100 crore).

[142] In April 2020, Siemens acquired a 77% majority stake in Indian building solution[buzzword] provider iMetrex Technologies for an undisclosed sum.

[144] In August 2020, Siemens Healthineers AG announced that it plans to acquire U.S. cancer device and software company Varian Medical Systems in an all-stock deal valued at $16.4 billion.

[147] In May 2022, Siemens made the decision to cease its operations in Russia after 170 years and disassociate itself from any involvement with the Russian government due to the ongoing war of aggression against Ukraine.

The announcement came with a financial statement in which Siemens disclosed a second-quarter loss of approximately US$625 million as a direct consequence of the imposed sanctions on Russia.

[149] In October 2022, Siemens announced a strategic partnership with Swedish electric commercial vehicle manufacturer Volta Trucks to deliver and scale eMobility charging infrastructure to simplify the transition to fleet electrification.

[150] In October 2022, Siemens became a target of the Boycott, Divestment and Sanctions movement due to its award of a contract for the EuroAsia Interconnector,[151][152] which is planned to connect the electricity grids of Greece and Cyprus with both Israel and its illegal settlements in the West Bank.

[155] In August 2023, it was announced Siemens had signed an agreement to acquire the Veldhoven-headquartered eBus, eTruck and passenger vehicle fast charging technology company, Heliox.

[156] In March 2024, Siemens announced the creation of a new £100m digital engineering facility in Wiltshire, UK, aimed at replacing its existing rail infrastructure factory in Chippenham with a new research and development centre, expected to open by 2026.

Xcelerator is part of a broader industry trend towards digital environments ("metaverses"), and is delivered through a software as a service (SaaS) subscription model, targeting accessibility for a range of businesses including small and medium-sized enterprises.

In the realm of electrical products, the division offers low-voltage switching, measuring and control equipment, distribution systems, and medium voltage switchgear.

Varian, an American company acquired by Siemens Healthineers in 2021, covers technologies related to cancer care, and advanced therapies focus on image-guided minimally invasive procedures.