This tool makes it possible to estimate the average monthly and yearly energy production of a PV system connected to the electricity grid, without battery storage. The calculation takes into account the solar radiation, temperature, wind speed and type of PV module. The user can choose how the modules are mounted, whether on a free-standing rack mounting, or integrated in a building surface. PVGIS can also calculate the optimum slope and orientation that maximizes the yearly energy production.
Solar electricity potential – Optimally-inclined photovoltaic modules
Solar electricity potential – Horizontally mounted photovoltaic modules
Photovoltaic Power Potential
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DESCRIPTION
This solar resource map provides a summary of estimated solar photovoltaic (PV) power generation potential. It represents the average daily/yearly totals of electricity production from a 1 kW-peak grid-connected solar PV power plant, calculated for a period of 25 recent years (1994-2018).
The PV system configuration consists of ground-based, free-standing structures with crystalline-silicon PV modules mounted at a fixed position, with optimum tilt to maximize yearly energy yield. Use of high efficiency inverters is assumed. The solar electricity calculation is based on high-resolution solar resource data and PV modeling software provided by Solargis.
The calculation takes into account solar radiation, air temperature, and terrain, to simulate the energy conversion and losses in the PV modules and other components of a PV power plant. In the simulation, losses due to dirt and soiling was estimated to be 3.5%. The cumulative effect of other conversion losses (inter-row shading, mismatch, inverters, cables, transformer, etc.) is assumed to be 7.5%. The power plant availability is considered to be 100%. The underlying solar resource database is calculated from atmospheric and satellite data with a 15-minute and 30-minute time step, and a spatial resolution of 1000 m.