Deep in the recesses of GPRA Complex, New Moti Bagh—an upscale, gated colony for civil servants—lies a sewage treatment and waste management plant. This is Delhi’s first zero-waste area, run by Green Planet Waste Management (GPWM).

Smack dab between GPWM’s wastewater treatment and composting centres is a shed where non-recyclable plastic herded from GPRA Complex is turned to oil. This is done through a process called pyrolysis.