Neat News 2038 (added 2021-07-30)
Photovoltaic is energetically worthwhile after one year

© Isofoton.es [CC BY 3.0]
Depending on the efficiency and the amount and the strength of sunlight, a photovoltaic installation is energetically worthwhile when it is in use for at least about one year (between 0.44 years in India and 1.42 years in Canada).
related: #photo_voltaic #efficiency