The alternative energy sector is the worst performer, continuing its recent decline. The sector has fallen 12% in the past week, and 23% in the last month. The heaviest faller in the sector is Hansen Transmissions International, the wind turbine gearbox designer.The industrial metals and mining sector is performing well today, led higher by copper and gold miner First Quantum Minerals.Iron ore producer Ferrexpo and base metals producer Talvivaara Mining are also wanted.Top performing sectors so far todayIndustrial Metals & Mining 8,229.84 +2.01%Chemicals 6,827.98 +2.00%Mobile Telecommunications 4,061.50 +1.76%Electronic & Electrical Equipment 2,995.64 +1.67%Oil Equipment, Services & Distribution 25,149.30 +1.55%Bottom performing sectors so far todayAlternative Energy 2,942.63 -5.03%Automobiles & Parts 4,715.88 -3.91%General Retailers 1,611.99 -1.85%Industrial Transportation 2,573.79 -1.19%Banks 4,879.42 -1.11%