This story has popped up on a few sites the last few days. I've done some digging (because Lebanon's rate seems improbably low) and found that CoinGecko pulled their electricity tariffs from globalpetrolprices.com

Having confirmed on globalpetrolprices that Lebanon's tariffs are indeed listed there as exceptionally low (explaining CoinGecko's figure) I still think their $266 per 1 BTC may be misleading, even if not intentionally so.

I posted about this on Stacker News as well, but still unclear to me where (or if) a miscalculation may have resulted in this somehow fantastically low cost of mining in Lebanon.