What are renewable energy systems primarily used for?

Renewable energy systems are primarily utilized for harnessing energy from naturally replenishing sources such as sunlight, wind, water, and biomass. These systems are designed to produce energy without depleting the earth's resources, as they tap into energy sources that can be naturally restored over time. This approach contrasts with fossil fuels, which are finite and non-renewable.

By using renewable resources, these systems contribute to a sustainable energy future, helping to reduce dependence on fossil fuels, decrease greenhouse gas emissions, and mitigate climate change. They are key in addressing energy needs while promoting environmental health.

The other choices highlight methods or goals that do not align with the fundamental purpose of renewable energy systems. Generating energy from fossil fuels contradicts the idea of sustainability; storing energy may be part of energy management but is not the primary focus of renewable systems; and increasing carbon emissions directly opposes the aims of renewable energy technologies, which strive to minimize such emissions for a healthier planet.