New data from IRENA shows that about 115 million people worldwide currently rely on the basic energy services provided by solar lights, while another 25 million obtain a higher level of renewable energy services through solar home systems or connection to a solar mini-grid. In addition to solar power, over 6 million people are currently connected to hydropower mini-grids, while another 300,000 people use biogas power.
The supply of electricity from mini-grids and small solar devices, such as solar home systems and solar lights is growing especially fast. This part of the energy sector, including power generation from these sources, is often missing from official energy statistics. But evidence of their growing importance can be seen in solar panel import statistics and development project databases.
During 2017, IRENA collected detailed data about off-grid power developments to determine current estimates of off-grid capacity. Data sources included biannual market surveys from the Global Off-Grid Lighting Association, the OECD-DAC development project database, national and regional power plant databases, off-grid data gathered via IRENA questionnaires, and information obtained from organisations such as REN21 and the Alliance for Rural Electrification.
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