father and son on bike in Mumbai

Electric Mumbai

A growing economy and skyrocketing population need more electricity. But doing it without displacing residents will take an innovative update to traditional power lines.

example of Mumbai houses built around power towers
“Scarcity of space prompts people in Mumbai to build homes wherever there is space.”

- Mohan Nair

EMD Sales Manager, 3M India

Shelter Where You Find It

In crowded Mumbai, many homes are built on the legs of suspension towers. With a density of a million people per square mile, space is precious. And the towers are free, strong and available.

Mumbai street screen

Hot. Crowded. Power hungry.

At 20.5 million people, Mumbai is India’s most populous city, and it demands more electricity. But it’s nearly impossible to upgrade existing towers without destroying the homes built on and around them.

Why More Power?
Because Mumbai Sustains:

shot of Chinese building

Light for the Games

It’s only 6 weeks before the 2008 Olympic Games, and China needs more power. But there’s no time to build new towers. Turning to 3M, the Chongqing Electric Power Corporation chooses the same solution that will ultimately help Mumbai.

grey background image
“We required a [power line conductor that] could be installed quickly and reliably within the existing infrastructure." .”

- Wang Xinkuan

Chief Design Engineer, Chongqing Electric Power Corporation

engineering the perfect answer, conductor core 3M power line cables

More Power for Power

3M™ Aluminium Conductor Composite Reinforced (ACCR)

Herve Deve and his team of 3M scientists found that an aluminium composite for the conductor core was better than the traditional steel one - just as strong, but lighter. It could carry more power and would sag less.

Herve Deve
“It carried twice as much power at half the weight. We realised immediately that it meant utilities wouldn’t need to build stronger or taller towers.”

- Herve Deve

Technical Manager, 3M Electrical Markets Division

conductor core 3M power line cables used in testing

Sag Science

Deve and his team wanted to find a way for power lines to carry more electricity with considerably less sagging. More electricity means more heat, which means more sag. And when power lines sag, they can hit a tree or another transmission line, causing an outage. It limits the power they can carry.

new power lines in Mumbai

Upgrading without Interruption

In Chongqing, the new power lines were installed on existing towers in only two weeks. The nearby Olympic venue had the power it needed without disrupting neighbouring communities. Then, a year later, the same ACCR technology was used in Mumbai. And no-one lost their home.