The Electricity sector crackled higher on Thursday, led by Scottish utility SSE. The FTSE 100 energy supplier was given a double upgrade by Morgan Stanley from 'underweight' to 'overweight' with its price target lifted to 1,735p.The group's shares fell 3.1% to 1,482p.Paper and packaging giant Mondi dragged its sector lower, as the shares fell 2.5% in what was most likely profit taking after the company received positive analyst support after results in late February and strong long-term run in the stock.Top performing sectors so far todayElectricity 9,762.27 +2.05%Industrial Metals & Mining 895.03 +1.19%Technology Hardware & Equipment 1,200.09 +0.69%Aerospace and Defence 4,894.79 +0.34%Oil Equipment, Services & Distribution 23,630.38 +0.18%Bottom performing sectors so far todayForestry & Paper 11,212.98 -2.80%Real Estate Investment Trusts 2,684.00 -2.38%Household Goods & Home Construction 11,489.27 -1.62%Electronic & Electrical Equipment 4,186.81 -1.54%Insurance (non-life) 1,843.46 -1.48%OH