The lesson discusses the importance of renewable energy, highlighting its ability to naturally replenish and never run out, with examples such as solar, wind, hydro, geothermal, and biomass. It emphasizes the environmental benefits of renewable energy, such as reducing greenhouse gas emissions and pollution, while also acknowledging challenges like the intermittency of sources like solar and wind. Despite these challenges, advancements in technology are making renewable energy more accessible and efficient, offering a promising alternative to fossil fuels and a potential solution to climate change, with Malta also utilizing renewable energy sources.