LEDs installed at Pahari Mandir in Ranchi. Picture by Hardeep Singh
After illuminating Pahari Mandir, light-emitting diodes — better known as LEDs — will adorn Harmu Road, also known as Birsa Munda Rajmarg, in Ranchi.
Emboldened by the pilot project’s success, Ranchi Municipal Corporation (RMC) has decided to introduce LED lights system on this major artery by August-end to slash the power bill.
“After successfully installing 10 LED lights near Pahari Mandir, we have now placed orders for 635 more. They are likely to arrive in a few days’ time and we will start setting them up on Harmu Road,” RMC public relations officer Naresh Kumar Sinha said, adding commuters would be able to enjoy the glow of such lights from early September.
Many VVIPs, including the governor, chief minister, Speaker and senior bureaucrats use Birsa Munda Rajmarg to reach Project Building.
At present, Harmu Road is lit up by sodium vapour lights, which consume lot of power, emit carbon gas and generate heat.
A 60-Watt LED gives the brightness of two sodium vapour lights, which together consume 120watt of power. One 90-Watt vapour light generates half a kilogram carbon in a span of eight hours.
In contrast, LEDs don’t generate carbon and heat, proving to be highly eco-friendly.
This apart, each LED lasts for around 80,000 hours. In contrast, a vapour illuminates only some 30,000 hours.
“The LEDs are much brighter. Hence, the civic body will install 635 such lights on Harmu Road,” said Sinha.
LEDs use small, powerful sources of light that glow when electrons move through a semiconductor. They shine in only one direction, increasing their luminous efficacy or brightness.
However, LEDs are a bit costly at Rs 24,000 each. Compared to this, a vapour light costs Rs 4,200.
There are also plans to illuminate the stretch from Raj Bhavan to Booty More on Bariatu Road with such lights. Jharkhand Renewable Energy Development Authority (JREDA) will be its implementing body. If the project takes off, 326 LEDs will replace sodium vapour lights.
“We have the plan. But first, we need to appoint an agency for the job. It will take a month or two to actually start the work,” said Surendra Kumar, assistant engineer (electrical), JREDA.