By 1999, the SPC was intimating that power purchasers could no longer guarantee off-take, although existing PPAs with foreign invested generators were grandfathered.

• 到了1999 年，国家电能公司表示电能购买者不能再就最低购货量提供保证，纵使与境外投资生产商签订的电能购买协议不受新指标限制。