The quality of all the Powergen products is proved by its customers satisfaction, and is guaranteed by very skilled workers.

产品的质量由其顾客的满意度得到了证明，并由极具技能的员工队伍来保障。

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The Britishutility Powergen, for one, has fallen 40% in the last year, pushing the dividend yield to 8.8%.

FORBES: Bargains And Dogs

He says it was very difficult to get Powergen to accept they were wrong.

BBC: NEWS | Business | Powergen inflicts inflated bills

Powergen reckons that putting up just two or three turbines becomes viable on this model.

ECONOMIST: Wind power