It seems the pace of adoption of SolarCoin is still relatively high, since the backlog of new users was cleared (https://hive.blog/solarcoin/@scalextrix/solarcoin-welcomes-over-2-000-new-claimants-to-the-ecosystem) in the distribution at the beginning of June we have seen another bumper month of added users to the ecosystem, 752 in one month is great progress!
Of course its all visible on the block explorer: https://solarcoin.enapter.com/transactions?page=16&query=agrt
While these type of coins are ignored by the trading community, they are growing their user-base steadily, which should mean at some point they break-out, time will tell.