Extreme heat has a mixed impact on solar power generation. While solar panels require sunlight to produce electricity, excessively high temperatures actually reduce their efficiency. Most photovoltaic (PV) modules perform optimally at around 25°C, and for every degree above this level, power output typically declines by 0.3% to 0.5% depending on the technology used. During intense summer conditions, panel surfaces can heat up beyond 60–70°C, leading to voltage losses and reduced generation efficiency. Heatwaves can also stress inverters, transformers and grid infrastructure, while increasing dust accumulation and water requirements for panel cleaning. However, despite lower efficiency per panel, overall solar generation may still remain high during summer because of longer daylight hours and stronger solar irradiance.

Yes, hybrid rooftop solar systems are generally more expensive than normal GTI (Grid-Tied Inverter) based systems because they are designed to do more than just feed solar power into the grid. A standard GTI system mainly converts solar DC power into AC and synchronises it with the grid, making it relatively simple and cheaper. In contrast, a hybrid system can manage solar generation, battery storage, grid supply and backup loads simultaneously. This requires a more advanced inverter, additional battery bank, battery management system (BMS), protection equipment and often smarter energy management software. Batteries themselves are a major cost component, especially lithium-ion batteries, which significantly increase the project cost. Hybrid systems also involve more complex installation and wiring. However, they provide backup during power cuts, better energy independence and the ability to store excess solar power for evening use, which a normal GTI system cannot do.

In India, March to May generally delivers the highest solar power generation, with April often emerging as the peak month for many regions. This is because these months combine very high solar irradiance, clear skies and longer sunshine hours before the arrival of the monsoon season. Northern, western and central Indian states such as Rajasthan, Gujarat, Maharashtra and Madhya Pradesh especially witness strong solar output during this period. However, in some extremely hot regions, excessive panel temperatures during peak summer can slightly reduce efficiency despite abundant sunlight. Solar generation usually drops during June to September due to cloud cover and rainfall during the monsoon season.