News & AnalysisAGL Energy reveals A$1.9bn impairment on wind PPAsAGL Energy has been forced to write down a series of PPAs with windfarms it developed and sold between 2006 and 2012, as wholesale prices continue to fall.ByDaniel Kemp5 February 2021•3 mins readDealsInvestorsAsia-PacificAustraliaEnergyEnergy TransitionRenewablesWindFeatured