During high electricity demand periods, it can cause stress on the grid, ultimately resulting in higher prices. To reduce stress and costs, one can either build more power plants or reduce the demand for electricity on the system during such intense hours. Demand response energy program includes load shifting or reducing energy use during peak load times for creating a cleaner, sustainable, decentralized grid. It increases overall system efficiency and plays a vital role in helping us meet the clean energy and climate goals.
The electric grid is evolving, and it depends more on using renewable energy sources for operation. Moreover, it is supplemented by behavioral changes in customers as they are shifting towards cleaner technologies. These changes are enabling utilities to strengthen grid reliability with demand response. It allows the electric utilities to offer cost-saving products to customers, besides improving consumers' carbon footprint. This article details on few critical aspects of the
Demand Response Energy Program.
Demand Response Energy Program Types
• Emergency Demand Response: These are reliability-based programs in which the customers receive incentives for measuring load reductions during reliability-triggered events. These programs are available to customers with on-site generation and customers that can reduce their loads. It helps to mitigate any blackouts or brownouts at peak hours when demand on the grid exceeds the supply
• Economic Demand Response: The economic model for the demand response is deployed by utilities to avoid significantly higher production costs at peak demand. It involves a cross-period shift in the consumption pattern of individual consumers to reduce electricity usage. Participants may offer load reductions in specific amounts at times in response to the proposed price.
• Ancillary Service Demand Response: It enables grid operators to maintain a reliable electricity system. It is helpful for electricity transmission to loads consistent with reliability requirements to maintain the proper flow and direction of electricity. In addition, it helps to keep the balance between supply and demand and quickly recover the system in case of a power cut.
Environmental Benefits
Demand response energy programs contribute towards reducing emissions from the residential and commercial sectors.
Peaking power plants that run at peak hours are generally more inefficient and higher-emitting. Demand response reduces the need for fossil-fueled power plants and offers several environmental benefits. Unlike fossil fuel plants, it can harness more clean energy that consumes zero water, reducing water consumption rates. It also helps to improve the air quality, reducing respiratory illness prevalent among the masses.
Demand Response Strategies
• Direct Load Control: Utilities enforce a load reduction initiative that includes independent system (grid) operators, load-serving entities, and utility distribution companies. It involves remote interruption of customers' energy usage, with little discretion in compliance on the part of the electricity consumer. The power distributors cycle loads on and off at varying time intervals during peak hours.
• Dynamic Pricing: Price response programs depend on the voluntary actions of electricity customers. Based on voluntary curtailment, consumers receive variable electricity rates during demand response events.