May 5 (Reuters) - AGL Energy Ltd AGL.AX :
* GUIDANCE RANGE FOR FY20 UNDERLYING PROFIT AFTER TAX OF $780 MILLION TO $860 MILLION
* RESULT IN "UPPER HALF" OF RANGE FOR FY20 NOW LESS LIKELY
* EXPECT AN INCREASE IN BAD DEBTS IN 2020 & A FURTHER MORE PRONOUNCED IMPACT IN 2021