Energy and renewables
Solar thermal collector power
Simple estimate calculator for solar thermal collector power from area, irradiance, and efficiency.
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PV module count from power
Calculates the minimum whole number of PV modules required to meet the target power.
Simple PV daily energy
Estimates daily PV energy from peak power, sun hours, and performance ratio.
PV inverter power sizing
Calculates required AC apparent power and recommended inverter power from active power, power factor and loading fraction.
PV power from area and efficiency
Estimates PV power from module area, irradiance, and efficiency.
PV string series count with temperature
Calculates temperature-corrected Voc/Vmp and module-count limits from DC voltage and MPPT range.
Hydro power from head and flow
Simple estimate calculator for hydro power from density, gravity, flow rate, head, and efficiency.