Hundreds of villages in rural India are using clean energy powered by the sun.

This month, 61 households in the village of Baripatha in eastern India were given two solar lamps. Villagers had been using kerosene lamps at night. Kerosene produces pollution and can lead to fires.

The Indian government wants to increase the use of solar energy by 500 percent in the next seven years. If it is to reach that goal, 100 gigawatts of power must come from solar by 2022. Now, just 4 gigawatts of power created in the country come from the sun.

Ramanbhai Parmar, has become the first farmer to sell energy back to the power grid from the solar panels that drive his water pump in Anand district, Gujrat, India, June 8, 2015. (International Water Management Institute photo, Prashanth Vishwanathan)
Ramanbhai Parmar, has become the first farmer to sell energy back to the power grid from the solar panels that drive his water pump in Anand district, Gujrat, India, June 8, 2015. (International Water Management Institute photo, Prashanth Vishwanathan)
Officials say they want to slow the amount of greenhouse gas emissions. India is now the third-largest producer of this gas. The gas contributes to climate change.
Arunabha Ghosh is the head of the Council on Energy, Environment and Water, a policy research group in New Delhi.
He says "in terms of the share of electricity capacity that Germany achieved through renewables, that transition took about 22 years for Germany. In India's case, which is a much poorer economy, India is planning to have a similar shift towards renewable energy and non-fossil energy" within 15 years.
India's goal may be helped by the decreased cost of developing solar energy. The government says it wants investors to spend $100 billion over seven years in solar power. It is reducing taxes for some solar-related investments. And it is permitting non-Indians to invest.
This week, Germany said it would spend more than $2 billion on solar projects in India. SunEdison, an American renewable-energy company, says it wants to invest $15 billion. SoftBank, a Japanese company, has announced it will partner with companies in India and Taiwan to spend up to $20 billion on solar energy projects. Trina Solar, a Chinese company, plans to spend $500 million to make solar panels.
Some people in India are worried that there is not enough land for some of these projects. Many of the projects need large plots of land.
Inderpreet Wadhwa created a company called Azure Power. It was one of the earliest investors in solar projects. He said most of them are being built in dry areas of the country, on land that cannot be farmed.
"You are not displacing any alternative use of land," he said, "especially if you are building in remote areas in Rajasthan for example."
Meanwhile, India continues to dig for coal to provide energy. It says it hopes to double production in five years. India says it needs such plants. It says one quarter of its 1.2 billion people still do not have electricity. Some Indian towns and cities still do not have reliable electricity for their people.
Environmental activists warn that the use of the new coal-fueled power plants means that India will continue to increase the amount of carbon pollution it produces for many years.
But environmental researcher Arunabha Ghosh notes that "people don't seem to recognize that it is not a question of will more coal be built or not. It is a question of how (many coal-fueled power centers are) not going to be built because of these aggressive (solar) targets. We are going from about eight to 13 percent of renewable energy in mid-century to 30 percent by 2030."
China and the United States have set deadlines to reduce carbon they send into the air. But India has not. It has only set a goal of slowing the increase of pollution it creates, not reducing the total.
Indian officials note that the amount of pollution the country creates is far lower compared with countries like the United States.
I'm Christopher Jones-Cruise.