Purpose　With　the　advent　of　the　information　age,　this　paper　aims　to　apply　risk　analysis　theories　to　study　the　risk　prevention　mechanism　of　information　disclosure,　thus　supporting　the　green　electricity　supply.　Design/methodology/approach　This　paper　conducts　a　comprehensive　evaluation　and　analysis　of　the　impact　of　power　market　transactions,　power　market　operations　and　effective　government　supervision,　so　as　to　figure　out　the　core　risk　content　of　power　market　information　disclosure.　Moreover,　AHP-entropy　method　is　adopted　to　weigh　different　indicators　of　information　disclosure　risks　for　the　participants　in　the　electricity　market.　Findings　The　potential　reasons　for　information　disclosure　risk　in　the　electricity　market　include　insufficient　information　disclosure,　high　cost　of　obtaining　information,　inaccurate　information　disclosure,　untimely　information　disclosure　and　unfairness　of　information　disclosure.　Originality/value　Some　suggestions　and　implications　on　risk　prevention　mechanism　of　information　disclosure　in　the　electricity　market　are　provided,　so　as　to　ensure　the　green　electricity　supply　and　promote　the　electricity　market　reform　in　China.