As Indian Prime Minister Narendra Modi met with U.S. President Barack Obama Tuesday, clean energy was on the agenda. A joint editorial from the leaders promised they would discuss ways to “expand affordable renewable energy” in India during the prime minister’s visit, his first official trip to the States.

The word “affordable” is key everywhere, but especially in India, where some 300 million people still lack access to electricity. Certainly coal, which currently accounts for 59 percent of India’s power capacity, will help meet that demand. But India’s quest to meet its energy needs occurs against the backdrop of increasing international pressure for nations to act on climate change, and there seems to be a recognition in India that even