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“In the field of infrastructure for waste handling,

in many cities today, refuse is simply collected

by waste trucks. Instead, by encouraging

households to separate their rubbish into

different coloured bags and then using a

pneumatic system, refuse can be mechanically

sorted at the collection point before entering

different recycling compartments.

“In Stockholm, we will use recycled waste to

produce biogas for running more vehicles.

Today, for every 100 people that use the toilet,

this produces enough waste to drive one car.

Yet if we collect the household waste, we only

need 50 people to fuel one car. If we combine

such steps with fuel efficiency, the waste of only

25 people may be needed. Through combining

systems where waste becomes fuel and

looking outside the box, we can find the

solutions that are part of our current

infrastructure,” Landahl said.

“Another area is open district heating, which is

a new business model. Many ICT companies,

for example Google and Facebook, place their

servers in the north of Sweden because of the

cool air. Yet one of the results of the now

warmer environment is attracting mosquitoes.

However, if you could sell the excess heat to

district heating companies that would buy it at

the same price that they are producing heat for,

a new business could be formed. Consequently,

instead of attracting mosquitoes, it would be

heating the homes and hot water of Stockholm

citizens – this makes more sense. There are

many cities that have a lot of waste heat,

especially in the eastern parts of Europe where

they have to renew their district heating

systems, and this could be a viable option for

using the waste heat from industries, instead

of using coal.”

Sustainable urban mobility

The final area of interest is urban mobility. The

project aims to realise: sustainable delivery,

smart traffic management, alternative fuel-

driven vehicles, and smart mobility solutions.

Landahl explained further: “On the mobility side,

we are working closely with finding alternatives

to the private car, for example car sharing, and

the better delivery of goods. Citizens are buying

more and more on the internet, and this project

is looking to help bring deliveries directly to the

staircases of residents’ homes, where there will

enhancing urban mobility, and integrating renewable energy sources

into the power network.

Low energy districts

As part of the energy area of action, the project aims for smart building

shell refurbishment, smart building logistics, smart energy-saving

tenants, and smart local electricity management, as Landahl explained:

“Many cities have growing populations with urbanisation: this is still

happening in Europe, but other parts of the world are witnessing a greater

pace. We need to create dwellings for a growing population, as well as

renew existing dwellings for new needs, for example smaller families or

elderly people that have problems with movement.

“With a big need for renovating existing buildings, this is a wonderful

opportunity for increasing energy efficiency and reducing costs – energy

efficiency makes sense from an economic point of view. One example is

lifts – lifts use more energy for lighting than for movement. Consequently,

putting in a sensor and controlling the light in the lift as to when a person

enters and exits saves a lot of energy. If this information is then passed

back to the tenants in their apartments, you can help them to behave in

better ways, reducing their energy needs.”

Integrated infrastructure

The second area of interest in the GrowSmarter project regards the

integration of infrastructures and seeks to establish smart street lighting,

waste heat recovery, smart waste collection, and Big Data management.

Landahl gave further details.

“Another area of interest is infrastructure for lighting and

communication – when you move from 3G to 4G and 5G on mobile

phones, there are shorter wavelengths. When you have shorter

wavelengths, you need to have more densely located transmission

poles. Through using the lamp posts as a place for transmitters, as

well as controlling the light bulbs and dimming them on cycle paths

when no-one is cycling, many measures can be implemented, bringing

together communications and lighting.


H O R I Z O N 2 0 2 0 P R O J E C T S : P O R TA L


S O C I E TA L C H A L L E N G E S : E N E R G Y

Realising smart energy

solutions in lifts is one

of the project’s goals