Solar ventilation systems utilize solar panels to power fans or ventilators that circulate air within a building. The core principle involves using solar energy to drive the ventilation process, reducing reliance on non-renewable energy sources. Eco-friendly solutions for homes, RVs & greenhouses. This environmentally friendly approach reduces reliance on electrical systems. You can greatly reduce your home's energy costs and improve indoor comfort with these 7 effective passive solar ventilation designs: solar chimneys, Trombe walls, wind catchers, cross ventilation, thermal mass cooling, earth tubes, and stack effect ventilation. Photovoltaic panels, commonly known as solar.