This could be done either by switching from stable feed-in tariffs to feed-in premiums that provide a fixed mark-up over market prices or from subsidies for deployment rather than for production. Both would provide renewable producers with an incentive at least not to produce at maximum capacity in times of negative prices and thus provide better remuneration also for dispatchable capacity. The very question, however, shows how scenarios with very large shares of intermittent renewables, say above 30% of electricity production, begin to require adjustments that create intrinsic ceilings to the original objective.