Module 1 of 10
Solar basics: sun, cells, modules
How sunlight becomes electricity, what a module is made of, and the numbers on a datasheet.
- 5lessons
- 45minutes
- 3,240questions in the bank
Lessons
The sun as a resource: irradiance, peak sun hours and Indian solar maps
Irradiance, irradiation and peak sun hours explained with Indian numbers, plus how to read solar maps and city yields before you quote.
9 min readHow a solar cell works: the photovoltaic effect
How a silicon cell turns light into current: doping, the p-n junction, why a cell gives about 0.7 V, and how heat and light change its output.
8 min readCells to modules: mono PERC, TOPCon, HJT, bifacial, half-cut
What is inside a module, and how PERC, TOPCon, HJT, bifacial and half-cut designs differ in efficiency, heat and price for Indian roofs.
9 min readReading a module datasheet: Wp, Voc, Isc, Vmp, Imp, temperature coefficients, NOCT
Decode every number on a solar module datasheet and use them: STC ratings, the I-V curve, temperature coefficients, NOCT and mechanical limits.
10 min read, with a live calculatorWhat a rooftop system is made of: on-grid, hybrid and off-grid at a glance
The parts of a rooftop solar system and how on-grid, hybrid and off-grid designs differ in cost, backup, subsidy and the customers they suit.
9 min read