TS4i said the company would also offer solutions for industrial power needs. WS Atkins said TS4i's existing contracts were worth more than £50m but did not say how much the company had cost.
Atkins said its generation capacity had been incorporated into the TS4i Power Resource arm.
TS4i was set up last year to offer design, construction, maintenance and finance packages. It has targeted projects worth between £5m and £20m.