Solar power could be a dominant source of electricity powering homes by what decade?

Solar power could be a dominant source of electricity powering homes by what decade?

• A. The 2010s
• B. The 2020s
• C. The 2030s
• D. The 2040s

Answer: (C)

The main idea here is how tech progress and cost trends push solar power to become the primary way people get electricity for homes. Solar PV costs have fallen dramatically and continue to fall, while manufacturing scale, efficiency, and the spread of rooftop installations plus utility-scale projects expand available solar capacity. When paired with advances in storage and smarter grid design, solar can supply reliable electricity for much of the day, making it feasible to dominate residential power supply in many places. By the 2030s, these factors combine to make it a realistic milestone that solar could become the leading source of electricity powering homes. Earlier decades already see strong growth, but not yet a clear majority share, while later decades would likely see even greater dominance, but the 2030s is the most plausible first decade for that shift.

The main idea here is how tech progress and cost trends push solar power to become the primary way people get electricity for homes. Solar PV costs have fallen dramatically and continue to fall, while manufacturing scale, efficiency, and the spread of rooftop installations plus utility-scale projects expand available solar capacity. When paired with advances in storage and smarter grid design, solar can supply reliable electricity for much of the day, making it feasible to dominate residential power supply in many places. By the 2030s, these factors combine to make it a realistic milestone that solar could become the leading source of electricity powering homes. Earlier decades already see strong growth, but not yet a clear majority share, while later decades would likely see even greater dominance, but the 2030s is the most plausible first decade for that shift.