Oslo counts CO₂ the way it counts money: since 2016 every budget has come with sector-by-sector emission ceilings and a named agency responsible for each cut. Roughly 200 Norwegian municipalities and a dozen C40 cities — London, New York, Mumbai — have copied the model. Just as instructive: Oslo openly reports it is off track for its own 2030 goal.
The atlas documents 8 projects in Oslo, the earliest dating to 2007: 1 scaled back, 7 still running without a verdict. Every entry carries an evidence grade — the strongest here is peer-reviewed (1 entry) — and links its sources.
Three entries that show what Oslo is actually doing.
Computed from the 8 entries below — a profile, not a score.
Oslo's smart-city fingerprint set in early and quietly infrastructural, rather than with one splashy platform launch. From 2007, the city's own Agency for Urban Environment (Bymiljøetaten) began building an on-street EV charging network years before Norway's tax breaks made electric cars mainstream — Oslo's own charging build-out is a separate, more modest story than the national "EV capital of the world" one. In the same years the city solved a far less glamorous problem at scale: since 2009, colour-coded bags and optical scanners at Haraldrud and later Klemetsrud have let residents put all their waste in one bin, sorted by camera afterward instead of by hand at the curb.
2016 brought the governance layer that ties the rest together. Oslo adopted its climate budget that year, treating CO2 like money with sector-by-sector emission ceilings — a model now copied by roughly 200 Norwegian municipalities and a dozen C40 cities, including London, New York and Mumbai. The same year the city armed itself with a real, if rarely used, lever: a regulation letting it ban diesel driving within 24 hours of two-plus days of bad air, backed by thirteen real-time monitoring stations. And Oslo's city-bike system relaunched with GPS-tracked bikes and app-based unlock — a platform later spun off as its own company, now running bike-share in Bergen, Trondheim, Edinburgh and Milan.
In 2017 the oldest piece of the puzzle changed character. Oslo's toll ring, tolling entry since 1990 purely to raise revenue, became time- and emission-differentiated — diesel costs more at rush hour, electric cars far less. Whether that reform actually cut traffic is, by the city's own admission, still an open question: no comprehensive study has isolated its effect from the general rate increase that came with it.
The most recent chapter is Oslo owning up to its own numbers. The carbon-capture retrofit at Klemetsrud — meant to catch roughly 90% of the CO2 from the waste-to-energy plant that supplies much of the city's district heating — was paused in 2023 over rising costs and restarted only after a January 2025 investment decision, with capture now not expected before 2029. The EV charging network missed its own 2023 build target by more than half, with most of the shortfall going to car-rental reservations instead of ordinary drivers. And the city's own figures show barely a third of plastic packaging, and about half of all food waste, actually lands in the right optical-sorting bag. None of this reads as failure exactly — every system works as designed — but the climate budget itself is the clearest admission: on current measures, Oslo expects to reach roughly two-thirds of its 95%-by-2030 target, not all of it.
On a time axis, by the year each one started — 2007 to 2022. Pick a dot to read what it was.
✔ Every published entry is checked against the public sources it cites before publication.
Editorial links between Oslo's own entries — the city as a system, not a list.
Plans and announced trajectories — not yet documented results.
What's next for Oslo is mostly about closing gaps its own instruments have already found. The Klemetsrud capture plant is under construction toward a 2029 startup; the charging network needs roughly 7,000 points by 2030 against today's 2,600; and repeated information campaigns are trying to move more food waste into the correct coloured bag. Oslo's habit of publishing its own shortfalls — in the climate budget, the charging rollout, the diesel-ban trigger fired only once in nine years — is arguably the more durable export than any single sensor network.
Where Oslo appears in the atlas's own analysis.
Two cities the atlas reads next to Oslo — the reason first, then the entries it rests on. Chosen by hand from the Oslo threads below, not counted out of them.
Both wrote a threshold into their air monitoring, and in both the threshold is the part that rarely moves. Their bike shares went the other way: Oslo's platform was spun out as a company, Guadalajara's stayed an agency service.
Both built the instrument and found the lever belonged to someone else. Oslo recapitalised its plant and has let a reading close a road, once; Bristol sold the heat network it built and prices its zone by the calendar, not by its sensors.
Every editorial link from Oslo's entries into another city, strongest first. Each one is a statement about two projects, not about two cities — the three above are the ones the atlas is willing to make at city level.
1001 Smart Cities (2026). “Smart-city projects in Oslo, Norway.” The Smart City Atlas. https://1001smartcities.org/cities/oslo/ (last verified 2026-08-27). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.