noun
Refers to a panel of photovoltaic cells used to generate electricity from sunlight. Common in contexts of renewable energy and residential/commercial power generation.
屋根に太陽電池パネルを設置した。
We installed solar panels on the roof.
太陽電池パネルの発電効率は年々向上している。
The power generation efficiency of solar panels is improving year by year.
Compound of 太陽 (taiyō, 'sun') + 電池 (denchi, 'battery/cell') + パネル (paneru, from English 'panel').