28 June 2026

Solar energy capture technology

The topic covers a flagship government scheme (Surya Ghar Mufti Bijili Yojana) and significant advancements in renewable energy technology, both of which are high-priority areas for UPSC Mains.

Questions

1. Discuss the potential of Molecular Solar Thermal (MOST) technology in addressing the limitations of conventional silicon-based solar energy storage in India. 150 words
   Attempt this — 150 words in 8 min

   0 / 150 words 8:00 Reset
2. Examine the role of renewable energy initiatives in India's transition to a green economy. How can technological innovations in solar energy capture and storage contribute to achieving national energy security goals? 250 words
   Attempt this — 250 words in 11 min

   0 / 250 words 11:00 Reset

Prelims

1. What is the primary mechanism by which Molecular Solar Thermal (MOST) technology stores energy?

   1. A Isomerisation of molecules upon absorbing solar light
   2. B Storage of electricity in lithium-ion battery arrays
   3. C Conversion of photons into direct current via silicon semiconductors
   4. D Thermal expansion of gases within a closed-loop system

2. Which of the following best describes the spectral range utilized by traditional silicon-based solar panels?

   1. A Red and near-infrared regions (400-1,100 nm)
   2. B Far-infrared region (above 2,000 nm)
   3. C Ultraviolet region (below 400 nm)
   4. D Entire electromagnetic spectrum equally