Three years after taking control of the business, Keltbray has now sold it back to the founding partners, Emmet Lagan and Stephen Lagan.
Keltbray directors Vince Corrigan and Peter Burnside have left the board.
Keltbray Lagan Power will now trade as Lagan Energy Engineering, from the same locations as before.
Both companies said that they had benefited from each other鈥檚 experience and expertise across the construction and engineering sectors during their time working together.
Emmet and Stephen Lagan said: 鈥淎ll the employees at KLP (now Lagan Energy Engineering) are grateful for the experience shared with the Keltbray Group and we wish them every success in the future. We will continue to work with Keltbray Group where business opportunities present themselves and we look forward to maintaining valued relationships forged with esteemed colleagues over this past two years.鈥
A spokesperson for Keltbray said: 鈥淜eltbray fully supports the decision by Lagan Energy Engineering鈥檚 shareholders to take the business in a new strategic direction and we will work together closely with them to ensure a seamless transition. We wish Emmet and Stephen Lagan, together with the Lagan team, every success moving forward and look forward to working together on appropriate future opportunities.鈥
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