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Smart City Expo World Congress Barcelona 2026

3 to 5 November 2026 Pavilion 3, Booth D151, Fira Gran Via, Barcelona

Smart City Expo World Congress 2026, Barcelona, 3 to 5 November. Kurrant films the expo floor, interviews with city and utility leaders and the companies that work with them, and The Smart Deal live pitches at Booth D151 in Pavilion 3. Videos are added here as we film them.

Cristian Canton, Barcelona Supercomputing Center: AI and supercomputing for cities and utilities

Cristian Canton, Associate Director at the Barcelona Supercomputing Center, explains how AI and supercomputing let cities and utilities connect the large, scattered data they produce and turn it into information for decisions. He gives two examples: the AI that will control most of Barcelona’s water system, and a digital twin of Mexico that runs on MareNostrum 5 within seconds of an earthquake. He also talks about where digital twins still fall short in modelling how people behave, what he calls pragmatic sovereignty for European cities, keeping the energy use of AI in check, access for smaller cities, and why people should stay in charge of critical city services in 2035.

Interviewed by Emma Lozano Doogan on the Kurrant booth at Smart City Expo World Congress 2026, Barcelona.

📖 Read Video Transcript
1
AI can transform cities and utilities.

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That's what we'll be discussing
here today with Cristian Canton.

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He is the associate director of the
Barcelona Supercomputing Center.

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Welcome.

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Welcome, thank you.

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Thank you.

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So looking at what's happening
today, where do you see AI making

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the biggest difference in how
cities and utilities operate today?

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A few years ago AI was
still in its infancy.

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Nowadays we see that like
there's been a huge boom on AI

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and that implies the processing
of massive amount of data.

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The ability to be
connecting a lot of dots,

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sparse dots on like the
multiple inputs that we get from

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cities that in the past
was almost impossible.

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So now we can connect those dots,
creating sites that are able to

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provide information for decision
makers, so to be making the

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right decisions or informed
decisions with respect to the cities.

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That ability was missing some
years ago, and that's thanks to

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the marvelous kind of explosion
of the AI that has happened

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in the recent, not 20 years,
but I would say in the last two,

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three years, we've seen a
massive change that has allowed

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us to be doing this transformation
of cities through AI.

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And what about supercomputing?

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What can supercomputers
reveal about cities that

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traditional sensors and
data analysis can't?

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And how can that lead
to better investment

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decisions for cities, for utilities?

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Great, so AI, I mean supercomputation,
it's the enabler of AI.

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Here we have, as you mentioned,
like a lot of sensors.

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A city produces an incredible amount
of data every second, every day.

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The ability to collect this data,
the ability to understand that

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the different granularities on
like an hour, a day, a year,

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a month or a decade, this is
something that we could not do before.

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And because the amount
of data is so vast,

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we really need supercomputers
here, like the—

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Here's where like Barcelona
Supercomputing Center has

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excelled and has provided the
technology, the core, of course,

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like the software
computation capabilities,

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but also the AI to be building
digital twins for the city of

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Barcelona and some other
projects that we are considering.

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Me give you an example.

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Many years ago in the
processing of waters

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in Barcelona, it was mostly manual.

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Some operators were changing bulbs or

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operating what opens,
what closes, etc.

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This was a time-consuming process.

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We built some neural
networks at the time,

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and those have evolved to nowadays,
where you can control most

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of the water systems in
Barcelona through some AI.

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This is a project that
we will be landing

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very soon, but this
will allow a way more

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efficient process on
how you handle water.

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And before we started the
interview, you were telling me about

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a project in Mexico with the
digital twin and earthquakes.

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Can you tell me a bit about that?

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Because you said that in one
minute or under one minute,

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it can basically save
millions of lives.

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If there were to be an
earthquake right now in Mexico,

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what will happen is like
all the seismic data of the

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country will be sent immediately
to the Mare Nostrum 5,

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our supercomputer at the
Barcelona Supercomputing Center.

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That will trigger an
emergency process where

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everyone is going to be
kicked out of the system.

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The system will become
fully available.

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We'll be loading a digital
twin of the whole country,

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but in particular of the major cities.

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And we will try to forecast where
the waves of this earthquake

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are going to percolate, how
fast, and which buildings

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might be at risk, which
facilities, what might happen in

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those five critical minutes
that will be really important

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to make the right decisions
to avoid a major catastrophe.

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It will take a few seconds
because we're going to be

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using all the power we have,
and then it's going to be

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sent back all to the emergency
centers in the country.

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We have never experienced
a real case, with a lot of

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like mock tests and simulacrum,
etc., and it worked.

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So we're not expecting
to see that live.

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We hope like that we'll
never have to use that.

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But that's a unique capability
of building a digital twin

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for a city where you really
can show the power of AI

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and supercomputation, because
you could like measure.

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Without this, you will
not be able to evacuate

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that hospital or that bridge
or something fast enough,

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because you don't
have the information.

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With this kind of like
digital twins for emergencies,

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we can really be doing something
that very few are not doing after—

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And since we're talking
about digital twins,

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so cities are investing
in digital twins.

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But how do we move from sophisticated
simulations to real decisions?

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Like where to invest in flood

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protection or transport
infrastructure?

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So the things that are
deterministic, there's a lot of rain,

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how the streets are going to
be flooding, it's a problem.

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How if there's like a, I
don't know, a heat wave,

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how which streets or which part of
the city are going to be hotter,

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so you need to be paying more
attention to those neighbourhoods.

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Those are more deterministic problems.

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The beautiful part of a
city is that it has people,

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and people will behave in ways
that that are really hard to model.

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Really, really, really hard.

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How is people going to behave
when there's a blackout?

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We witnessed that like a year ago.

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And it was surprising to see that
some things were hard to forecast.

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Think there's going to
be a gap where, like,

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decisions makers will be able
to say, like, in 10 years,

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Barcelona is going to be maybe
50 Celsius, which is really bad.

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How are people going to react to that?

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What can we start doing right
now so that we can mitigate this?

109
So behaving, the modeling of the
behavior, the city as a whole,

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I think is one of the areas where we
still need to do a lot of research,

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and that will allow decision
makers to make probably better

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informed decisions for the people
and of course for the city.

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And then let's talk about AI and
supercomputer, supercomputing.

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How can they transform
the way utilities

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plan and manage their networks?

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So we were talking about cities.

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What about utilities,
and what makes applying

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them to critical
infrastructure so challenging?

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So in terms of utilities,
you could start using digital

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twins to maybe forecast or
maybe like to understand how you

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can do a better use of your
resources in a global way.

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Can we delay like turning on
the lamplights, the lampposts?

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Again, supercomputation and AI
are just the glue to connect

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a humongous amount of data
that is noisy, that is dirty,

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that is sparse, and it's
even non-complete to make

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decisions that have long
impact into the inhabitants.

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And if European cities,
this is a topic that we're

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discussing a lot now, that
people are talking about

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it a lot now, is that if
European cities increasingly

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rely on AI developed
by global tech giants,

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what are the risks and what
alternatives can institutions

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like the Barcelona
Supercomputing Center offer?

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That's a question.

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Actually like that a lot of people
are talking about, like autonomy

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and sovereignty, and I have a very
clear answer to that one actually.

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I'm giving a talk later on that, and
we call it pragmatic sovereignty.

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Okay, so you cannot
fall into the autarky

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where you built
everything by yourself.

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Okay, I'm going to be building
the AI, I'm going to have

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all the energy, I'm going to
be doing all the in-house.

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You cannot do that.

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We don't have enough resources.

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Pragmatic sovereignty
means like I am in in a

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position that I have the
autonomy to take decisions.

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Yes, I'm gonna be taking the
dependency on Nvidia for my chips,

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but I have a plan B, C, D,

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and E for alternatives in case
there's like a shortage of this.

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BSC will provide some capabilities,

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but we cannot yet supply chips, okay?

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That's something that
we are working on.

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Maybe in five years we'll have
like chips made in Barcelona that

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will supply the city, but in the
meanwhile, how do we start or

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keep delivering on the needs of
the city without disrupting it?

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So sovereignty, I think
it's a very broad term.

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I would say like understand
what are the trade-offs

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that we're making,
when are we doing them,

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and where do we want to go,
and then we evolve on that.

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But I think we need to be
very clear that we don't

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have infinite resources, we
don't have infinite time.

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We need to do the right
thing, what we have right now,

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but have a clear north star
where we're going to go.

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So there's sovereignty,
and then there's the

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uncomfortable question
of sustainability.

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Yeah.

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So Europe is investing in AI
factories, but how can outweight

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how can we find that balance in which
we see the benefits, but then also

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we take care of sustainability
of— Yeah, something that

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basically we've been working for,
we've been going towards that.

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So how do we do that?

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There's a few angles to that question.

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So definitely like we
see that AI consumes a

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lot of energy, a lot of
electricity, a lot of water,

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and this happens with
all technologies.

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I've been like doing technology
for the last 25 years.

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You say like at the beginning,
in order to reach the

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point where you want to be,
you spend a lot of resources.

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Then we realize, hey,
we're spending too much,

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can we make this technology
smarter so it consumes less?

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The cycles now—

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Important here is that we are
not dragged by the hype of like,

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yeah, let's be building whatever
is built big as possible.

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No, especially with citizens,

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especially with like
limited resources.

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Let's make sure we build what
we need for it, not more,

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because we are then
spending too much resources.

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And keep an eye, because
I really think that

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at some point we might
be needing less energy.

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I'm going to quote a
sentence that I got from

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Bill Gates when I was
working at Microsoft.

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He was always saying like, we
should, we should like always

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play with the before last fashion,
not with the last fashion,

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because the before last
fashion we know it works.

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The last fashion, let someone test it.

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So for things as important as
sustainability, as cities and

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smart cities, like let's make sure
that we attach to things that work,

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that are sustainable,
with an eye on how we make

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them better in the right way,
but just not over accelerate,

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because then you might need
to brake, brake and go back.

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And then money.

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Of course.

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For I mean, that's...

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So how can smaller cities
have access to, you know,

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computing power when they
have small budgets or

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they're being told you
need to reduce spending?

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So how can smaller cities access it?

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That's a great question.

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I think having well-managed
cities with AI capabilities and

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amazing digital twins should
not be a property of big cities.

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As you mentioned, small cities
will have issues that maybe

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can be solved very easily with
the right tiny digital twins.

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Here's what I would expect
governments to make sure,

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like, hey, we have a whole
idea about digital twins

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or AI capabilities for
cities or supercomputations,

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should be distributed with
the right governing policy.

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Otherwise, again,
Barcelona might benefit,

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but a tiny village will
always be out of the loop.

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Also, it's important to
be building technologies

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that are reusable and
open, open source.

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Like, you're not building
just for Barcelona.

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Let's build the ecosystem
that everyone can piggyback,

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reusing as maximum as
possible without having

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to reinvent the wheel
every time we do a city.

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Okay, and then my last
question is, okay, in 2035,

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will AI mainly support
human operators or could it

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start managing critical
city services autonomously?

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Have seen in the last few years
where we are delegating more and

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more the mechanical routine kind
of tasks from humans to machines.

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Don't need to be turning all
the lights of Barcelona by hand.

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I'm sure there's a
system that can do that.

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As systems evolve, you can be
granting more and more autonomy to

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those systems to be taking on more
and more complex kind of tasks.

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However, you cannot
remove the human from

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the equation because
that's complicated.

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There's always that black
swan kind of incident where

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something not expected happens
and the machine is not ready.

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Then you're in like
the human is like, no,

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let me take the helm and be
doing the right maneuvers here.

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I need always to have
this fallback on human.

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But having like AI
to help us to augment

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our capacities to be managing a city.

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Oh yes, I think everyone is going
to be thinking along these lines.

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But yeah, I think we will
be seeing more and more AI.

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And the other important thing
is to keep in mind that we need

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to be building this AI, keeping
in mind society in the loop.

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How do we want our cities
to be managed and governed?

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Again, the human should
always be in the center.

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Although the cities are built
for humans, not for machines,

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and this should be like this,
I hope, for the long future.

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I think the best thing
would be to schedule an

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interview for 2035 and see,
and see how we're doing.

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Let's do it.

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Well, thank you so much for your time.

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My pleasure.

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Thank you.

About Smart City Expo World Congress Barcelona 2026

Smart City Expo World Congress 2026, Barcelona, 3 to 5 November. Kurrant films the expo floor, interviews with city and utility leaders and the companies that work with them, and The Smart Deal live pitches at Booth D151 in Pavilion 3. Videos are added here as we film them.

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