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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

 

SMART ENERGY

The coming decades will bring significant changes in energy supply and consumption. With concerns about global warming and diminishing oil reserves, nations are shifting toward low-carbon economies, prompting major changes in electricity supply and usage. Firstly, electricity demand will increase as consumers transition from oil and gas to electricity for homes and vehicles. Secondly, power generation will rise, focusing on renewable sources. To tackle these challenges, countries are investing in Smart Grid technology, which aims to optimize the electricity network by understanding power generation and demand, thereby improving efficiency.

(I)Smart Grid technology integrates computer systems with electricity networks. (II)These systems gather data on supply and demand, enhancing engineers’ management capabilities. (III)This leads to better energy utilization, reduced fuel needs, and lower carbon emissions. Additionally, operational and maintenance costs are minimized. For consumers, smart technology provides real-time data on energy usage and variable tariffs, encouraging energy use during off-peak hours to reduce costs. For instance, appliances like washing machines can be run at night. Smart meters connected to the Internet or phone networks allow remote control of appliances. (IV)

However, challenges accompany these advancements. Managing supply and demand is difficult with renewable energy sources like wind, solar, and wave power, which are unpredictable. Unlike oil and gas, these sources cannot easily meet peak demands, risking blackouts or system failures. Solutions include improving energy storage and promoting off-peak electricity use. Another issue is the remote location of many renewable energy sources, such as coastal and upland areas, which often lack infrastructure. Building new networks is necessary, though smart technology can reduce costs through efficient planning.

Smart Technology is still in development, with pilot projects testing its feasibility. Consumers are experimenting with smart meters to manage their home electricity use, and trials are underway for new infrastructure. Implementation will likely occur in phases, starting with simple methods to achieve quick carbon savings before advancing to more complex systems. Urban areas, with their high energy demand, are the primary focus for initial investments. Cities will adopt sustainable power solutions, transportation systems, and electric vehicle charging networks. By 2050, these innovations will go a long way toward revolutionizing energy supply, transforming homes, transportation, and lifestyles.

 

Where in paragraph 2 does the following sentence best fit?
This provides the opportunity to make better use of available electricity and reduce energy waste.”

A.

(I)

B.

(II)

C.

(III)

D.

(IV)

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17/03/2025
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