Homes and businesses in Spain installed 1,943 MW of solar photovoltaic self-consumption systems in 2023, marking a 27% decline in capacity compared to the year-ago period, Spanish association of renewable energy companies APPA said in its latest <a href="https://www.informeautoconsumo.es/wp-content/uploads/2024/01/Informe-Autoconsumo-Fotovoltaico-2023.pdf" target="_blank">annual report</a> on the self-consumption sector.