This is right up my ally with info I need.... I have been banging my head against the wall with PEA trying to sell excess solar on my 10Kw system. Ive had a Smart Meter finally installed 6 weeks ago. Burriram PEA now saying can only export to 3 phase power lines. My system is single phase. Told to contact Bangkok PEA for advise through their web site. Ran out of steam after trying to send them an e-mail 3 times and the web page just said unavailable at this time!!! @4myr is your system single phase? @Crossy thanks for mentioning me now I have found this thread. Time for the Issan Luv Machine to get on the phone. I'm exporting around 30Kwh each day now with blue sky's and no air-con running.