Fossil fuels, such as coal, oil, and natural gas, are non-renewable energy sources derived from the remains of ancient plants and animals.

Renewable energy sources, such as solar and wind, do not produce greenhouse gases, which contribute to climate change.

All of the options mentioned are effective methods for improving energy efficiency in buildings.

Energy storage systems are used to store excess energy produced during periods of high generation and release it during periods of high demand, helping to balance the intermittent nature of renewable energy sources.

All of the options mentioned are common types of energy storage technologies used in renewable energy systems.

Energy management in renewable energy systems aims to optimize energy consumption, minimize energy losses, and maximize energy efficiency.

All of the options mentioned are common energy management strategies in renewable energy systems.

Implementing energy efficiency measures in renewable energy systems can lead to reduced energy costs, increased energy reliability, and improved environmental performance.

All of the options mentioned are common challenges associated with the integration of renewable energy sources into the grid.

Energy efficiency policies in the context of renewable energy systems aim to promote energy conservation, encourage renewable energy adoption, and improve energy infrastructure.

All of the options mentioned are common energy efficiency certification programs for buildings.

Energy efficiency standards for appliances and equipment aim to reduce energy consumption, improve energy performance, and promote energy conservation.

All of the options mentioned are common energy efficiency measures implemented in industrial facilities.

Implementing energy efficiency measures in transportation systems can lead to reduced fuel consumption, lower transportation costs, and improved air quality.

All of the options mentioned are common energy efficiency measures implemented in agricultural systems.