- Google, Amazon, and Microsoft are scrambling to meet their internal net-zero targets, with the data centre build-out pushing their emissions upwards
- A new crop of startups in India are betting on generating carbon credits by introducing “ecologically sustainable” practices on Indian farms
- Yet, the methodology for validating these credits is untested at scale and rice-methane credits have been embroiled in scandal
- There are also questions about how much of the revenue drips down to the farmer and partner organisations, as well as how much real change is delivered on the ground
Every monsoon, Manu works in counts of five.
In the first half of July, usually the fifth month in her lunar calendar, she starts a motor and floods her paddy field with up to five centimetres of water. For five days, she lets it soak, and once the paddy stands in relatively dry soil, she digs a channel and drains the excess. Five days later, she floods the field again.
Manu’s family has farmed rice in Nashik, Maharashtra for nearly 20 years. “They would keep the field filled with water, all the time,” she said. “What I have been doing for the past six years saves water.”
The technique is called alternate wetting and drying (AWD), and it saves more than just water.
In 2024, out of nowhere, Manu got a call from an organisation called Value Network Ventures. They wanted to pay her Rs 2,000 per acre to do exactly what she said she’d been doing all along.
Turns out, wetting and drying paddy fields can cut down methane emissions. Paddy fields contributed to 3.2 million tonnes of methane released in India—about 16% of the country’s total methane emissions—according to its 2020 report to a United Nations body.
Right now, a company that can show a farmer using AWD can count the methane that wasn’t released, turn it into carbon credits, and sell it to buyers who want to cancel out their own emissions.
India is the world’s second-largest source of such voluntary carbon offsets, after the US, and Big Tech especially can’t seem to buy enough of them to wash away their data-centre and AI infrastructure sins.
Google and Amazon together emitted nearly 100 million tonnes of carbon dioxide equivalent in 2025, blaming much of it on AI infrastructure. A lot of that building is now happening in India too—by 2030, hyperscalers will account for nearly 30% of India’s promised 3.9 GW data centre capacity.
In September, Google signed a four-year deal to buy 1 million credits from Bengaluru-based Mitti Labs. Amazon is reportedly paying $30 million to The Good Rice Alliance (TGRA), a venture led by German pharmaceutical and biotechnology company Bayer, for more than 685,000 credits in its initial phase.
Credits

Google and Amazon’s newfound fascination with India’s paddy fields
Mrunmayee Kulkarni, Santhom J Joseph
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