This paper presents the use of curtailment to allowmore wind or solar power to be connected to a distributionnetwork when overcurrent or overvoltage set a limit. For fourcase studies, all based on measurements, the gain in producedenergy is calculated. It is shown that the curtailment method hasa large impact on this gain. The paper further discusses details ofthe curtailment algorithm and the communication needs as wellas some further applications of curtailment.