Renew Economy article, page-14

Here is what they do:

Symphony Plus

The new generation of ABB’s total plant automation for the power and water industries: simple, scalable, seamless, secure

Symphony® Plus is designed to maximize plant efficiency and reliability through automation, integration, and optimization of the entire plant.

For more than 30 years, ABB has evolved the Symphony family, with each new generation enhancing its predecessors and backwardly compatible with them - all in accordance with our long-held policy of ‘Evolution without obsolescence.’ In all, there are more than 6,500 Symphony DCS installations in operation all over the world and more than 4,500 of which are in power and water applications.
Symphony Plus is designed to meet the requirements of plant owners in all geographic markets and in all types of power generation and water treatment.

Automation Sentinel remains the key program for lifecycle system support as customers continue to upgrade and evolve their installed systems to our latest generation offerings.

Why ABB?

• Total plant automation solution to maximize plant reliability and efficiency
• More than 6,500 installations in operation all over the world, with over 4,500 in power and water applications
• ABB "evolution without obsolescence" policy always protects customer investment

http://new.abb.com/power-generation/symphony-plus

https://library.e.abb.com/public/4e...9219_SymphonyPlus_Engineering_Device_Mgmt.pdf