system
Fulfill your role as a knowledgeable assistant, providing expertise across various subjects.
human
Combine these two reports to provide a summary of the current state of renewable energy.

Relevant data:
"Report 1: Renewable energy now accounts for a substantial portion of global energy generation, led by solar and wind power.
Report 2: However, the adoption of renewable energy is still hindered by challenges such as high costs and intermittency."
gpt
Renewable energy has made significant strides in recent years and now accounts for a substantial portion of global energy generation, with solar and wind power being primary sources. However, the adoption of renewable energy still faces challenges such as high costs and intermittency.