Read the 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 7 to 14.
Renewable energy communities, where households work together to generate clean power, are growing rapidly in many countries. Smart meters, solar sensors, wind-speed trackers, and energy-analysis software provide real-time data that helps members optimise their shared systems. Collected information on sunlight levels, battery storage, and electricity usage allows energy teams to accelerate decisions on when to store, release, or share power. By acting quickly, communities avoid wasting energy and reduce dependence on the national grid.
Mapping tools show which rooftops receive the strongest sunlight and which areas should host additional solar panels. They also indicate places where wind turbines can operate safely. Drones deliver early alerts when equipment overheats or blades become blocked, so technicians can repair only the affected parts. This prevents large-scale breakdowns and helps lower maintenance costs for the entire community.
Automated energy-flow systems adjust power distribution every hour. Special software tracks household energy needs and forecasts weather patterns for the coming days. When energy demand increases or storms approach, the system changes the power route instantly. This saves electricity and keeps renewable-energy projects viable, especially in regions where weather conditions are unpredictable.
Digital platforms link households, engineers, and energy suppliers so they can update battery levels, output measurements, and transfer times immediately. Blockchain tools secure every entry, encouraging members to trust the recorded information. Over time, analytic programs compare seasonal data to predict energy shortages, plan resource allocation, and reveal weak points in the power network.