To decrease their carbon footprint, a housing society in Mumbai has found a way to generate their own electricity.
They have installed the most extensive renewable energy system ever used by any residential complex in the city, and will now use the solar project to cover 70% of their electricity needs.
Dheeraj Dream 2 CHS in Bhandup has 546 flats with about 2,000 residents living there. Earlier this month, they installed a 200-kilowatt rooftop solar plant with 636 solar panels in it.
According to the Hindustan Times, it takes up an area of 25,000 sqft, spread across four 20-storeyed buildings.
The solar plant will help light up the society’s passages, parking area, common areas, four water pumps, borewell motors, and 11 lifts.
This way they will save on electricity bills worth Rs 36 lakh and generate only 2.92 lakh kWh every year (1kWh consumption of solar energy = 1,060gm of carbon dioxide saved).
“The setup will help us save 309.5 tonnes of CO2 every year. Such a project usually has a lifespan of 25 years. This means we will be able to save 7,738 tonnes of CO2 emissions over the next 25 years,” Suraj Suvarna, secretary of the housing society, told HT.
The residents were not asked to pay for setting up the project. It cost slightly more than Rs one crore, and the managing committee took a loan to pay for it instead. The Centre also granted them a subsidy of Rs 36 lakh. They plan to recover the installation cost in about 1.5 years.
Even surplus power will not be wasted as a net-metering system will help transport it back to the grid. It will instead help those areas with less power supply.