renewable energy breakthrough

Here is a structured research brief on renewable energy breakthroughs.

### Context

The global energy sector is undergoing a rapid transition driven by the urgent need to mitigate climate change and achieve energy security. International agreements, such as the Paris Agreement, have set ambitious targets for reducing greenhouse gas emissions, making the accelerated deployment of renewable energy essential. However, the widespread adoption of renewables like solar and wind is hindered by their intermittency, land-use requirements, and the cost of energy storage. Recent technological breakthroughs are directly addressing these challenges, aiming to improve efficiency, lower costs, and create a more resilient and reliable clean energy grid.

### Key Developments

* **Perovskite Solar Cells:** Perovskites are a class of materials with a specific crystal structure that are highly efficient at converting sunlight into electricity. Recent lab-tested "tandem" cells, which layer perovskite m