This (English translation) document lists 35 Japanese cities and prefectures and efforts therein to become low-carbon cities.

Each record gives a number of government-instigated projects being undertaken and a government contact person.

Each record indicates how the city or prefecture is accredited as one- or more- of these:

JCM, Future City. Eco-Model City, ICLEI,C40

This document is valuable for policy formation because it explains what measures where taken by local government in each area in a manner tailored to stimulate, enforce or encourage systainable practices in business and community settings.  The settings are diverse and it is possible to contact the persons responsible to potentially learn of the sucess or otherwise of appropriate programmes.