Yes, You can use electricity and light provided by a generator at Damavand southern basecamp. This service is only available from 8 pm until 10 pm. There is also electricity available at Damavand Bargah-e Sevom Hut provided by solar panels besides genrators. This service is usually available from sunset to 10pm depending on the amount of electricity used by the mountaineers. There is also a generator at one of the Mount Damavand shelters.In addition,there are some tents that have electricity powered by generators.