Final answer:
Reducing electricity use during peak demand periods leads to lower energy bills, reduced greenhouse emissions, improved energy security, and increased energy efficiency.
Step-by-step explanation:
The added benefit of reducing electricity use during the peak demand period includes lower energy bills, reduced greenhouse gas emissions, improved energy security, and increased energy efficiency. Reducing power consumption during high-demand times helps in managing a more stable and reliable energy grid, which contributes to energy security. Moreover, using energy-efficient appliances like compact fluorescent lights (CFLs) or LED lights, which provide more light per watt than traditional incandescent bulbs, can lead to significant energy savings and less environmental impact.