Its brands included Avantis, Eurotherm, Foxboro, IMServ, InFusion, Triconex, SimSci, Skelta, Wonderware, Drayton, Eberle, and Eliwell.

Less than three years after its establishment, Invensys was in financial hardship, in part due to having overpaid for acquisitions such as the Baan Corporation at the height of the dotcom bubble and having accumulated a heavy debt burden.

Between 2011 and early 2012, the company's share price fell by nearly 50%, which was attributed to a £40 million expense from the delayed production of control and safety systems for eight Chinese nuclear reactors.

[4][5] Between 1999 and 2004, it underwent a major restructuring programme involving thousands of redundancies to cut its costs amid falling sales and a sizeable debt burden that allegedly posed the possibility of the company going bankrupt.

[15] In May 2006, the French multinational Schneider Electric announced that it would acquire Invensys Building Systems (IBS) operations in both North America and Asia in exchange for $296 million.

[26][27] Between 2011 and early 2012, the company's share price dropped by almost 50%, the devaluation being largely attributed to a £40 million expense associated with delays in the production of control and safety systems for eight Chinese nuclear reactors.

[28][29] On 2 May 2013, Invensys sold off its Wiltshire-based rail division to the German engineering conglomerate Siemens in exchange for £1.7 billion, the majority of which being used to address a deficit in its company pension scheme.

[32][33] That same year, the company's management team was compelled to issue a denial of a comment made by Henriksson that he expected China Southern Rail to make a substantial offer to obtain a stake in Invensys.

[35][36] During July 2013, it was announced that Invensys was set to be taken over by Schneider Electric, one of the firm's long term competitors, for a total consideration of £3.4 billion.

SimSci provides applications that help improve asset performance and utilisation with integrated simulation, optimisation, training, and process control software and services.