HK Electric, the smaller of Hong Kong’s two electricity suppliers, will cut fuel surcharges for customers in May but has warned that costs could significantly rise later in the year due to the impact of the conflict in the Middle East.The company said on Friday that its fuel clause charge for May will fall by 4.4 HK cents per kilowatt-hour to 26 HK cents per kWh, from 30.4 HK cents in April, citing a deferred effect under the monthly adjustment mechanism based on January’s average fuel costs....