ETC boosts payback on new power plants

Wärtsilä is a global provider of power solutions for the power industry, and marine, gas and oil sectors, with customers in over 170 countries. The company is a leader in the energy sector, with a strong focus on engine optimisation and technological innovation.

In 2011, Wärtsilä began working with Bowman Power Group, in Bermeo, Spain, to evaluate the effectiveness of Bowman’s Electric Turbo Compounding (ETC) exhaust recovery system. The company was seeking ways to improve engine efficiency and deliver additional power output without increasing fuel consumption. The trials in Spain demonstrated that the ETC system would increase net power output by 1.4%, with no impact on engine operation.

Based on this success, in 2012 Wärtsilä’s Energy Solutions division challenged Bowman to prove the long-term performance of the system over a 4,000 hour trial in Tirenda, Turkey, with rigorous durability tests carried out on a 9MW Wärtsilä 34SG engine, in a Wärtsilä operated power plant.

Proven results:

  • 1.5% additional free power generated
  • Zero impact on engine reliability
  • Over 600 trouble free engine shut-downs and start-ups
  • Over 450MWh of free energy generated in total
  • Over 8,200 system running hours
  • Accelerated payback on an entire power plant project

ETC now available for new power plants

As a result of the long-term trials, ETC technology is now available on new Wärtsilä power plant projects, equipped with Wärtsilä 34SG/50SG gas engines, and can also be retrofitted to Wärtsilä liquid fuel engines converted to gas operation. Click here to download the full case study.