Abstract – Measurement of the intensity of solar irradiance is essential for designing renewable energy systems and atmospheric science. A low-cost, IoT-enabled pyranometer is proposed in this paper for data logging. The pyranometer is designed to measure the solar irradiance of spectral range from 300nm to 2800nm and hence covers UV, IR, and visible spectral ranges. The pyranometer exploits the phenomenon of thermoelectric sensing and photo sensing to measure solar irradiance. Peltier module TEC1-12706 with BPX65 silicon photodiode is used for this purpose.