Answer :
Final answer:
The decrease in electricity used for lighting in the UK from 2002 to 2008 can be attributed to the increased use of energy-efficient lighting such as CFLs and LEDs. These alternatives are significantly more efficient than traditional incandescent bulbs. Consequently, they lower energy consumption while also reducing environmental impacts.
Explanation:
Reason for Decrease in Electricity Use for Lighting
Between 2002 and 2008, the amount of electricity used for lighting in homes in the UK decreased primarily due to the increasing adoption of energy-efficient light bulbs, such as Compact Fluorescent Lamps (CFLs) and Light Emitting Diodes (LEDs). These lighting alternatives consume significantly less power compared to traditional incandescent bulbs; for example, a 60-W incandescent bulb can be replaced by a 15-W CFL, which provides the same brightness while using less electricity. This shift not only reduces electrical energy consumption but also lessens the environmental impact by decreasing the demand for power production from fossil fuels.
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