The fixed line telecommunications sector is performing well with BT leading the charge, seeing shares rise 2.69% Monday afternoon.KCOM Group, Cable & Wireless Worldwide and TalkTalk are also among the top performers in the sector.Alternative energy is lower with solar wafers supplier PV Crystalox Solar heading the sector lower, falling by 1.95%.Wave energy power company Ocean Power Technologies and environmental technologies supplier Porvair are also seeing shares fall.Top performing sectors so far todayFixed Line Telecommunications 2,397.88 +2.12%Gas, Water & Multiutilities 4,557.55 +1.56%Automobiles & Parts 5,127.38 +1.20%Beverages 9,573.66 +1.20%Electricity 7,471.63 +1.18%Bottom performing sectors so far todayAlternative Energy 3,987.87 -1.32%Real Estate Investment & Services 1,551.78 -0.83%General Retailers 1,705.89 -0.53%Health Care Equipment & Services 3,680.50 -0.51%Technology Hardware & Equipment 580.95 -0.41%