Why good green urban ideas stay small and how to scale them

Kurzbeschreibung

The presentation examines why effective grassroots sustainability initiatives like Caritas Carla and parklets in Vienna struggle to scale, highlighting structural barriers in urban governance and planning.

Beschreibung

Cities across Euro­pe are short on mecha­nisms that enable sus­tainable ide­as to work. This ses­si­on takes a clo­se look at two prac­ti­cal examp­les of grass­roots urban sus­taina­bi­li­ty in Vien­na, Aus­tria. One in tex­ti­le was­te manage­ment explo­red through the work of Cari­tas Car­la Vien­na, and one in urban space trans­for­ma­ti­on. Both spaces and ser­vices pro­vi­de a neces­sa­ry public good but are unable to sca­le up, which begs the ques­ti­on – why do good ide­as stay small?

The first case is Car­la, a Vien­na-based initia­ti­ve at the heart of the city’s tex­ti­le cir­cu­lar eco­no­my. Car­la coll­ects, sorts, and redis­tri­bu­tes dis­card­ed clot­hing, pushing back against fast fashion cul­tu­re while pro­vi­ding afforda­ble alter­na­ti­ves to the public.
The second case is the park­let, a hum­ble but powerful micro-trans­for­ma­ti­on of urban par­king space into green, social, and pede­stri­an-fri­end­ly com­mu­ni­ty spots. Both initia­ti­ves work, howe­ver strugg­le to sur­vi­ve.

What con­nects them is a shared struc­tu­ral pro­blem: cities tend to tole­ra­te bot­tom-up sus­taina­bi­li­ty pro­jects rather than actively inte­gra­ting them into long-term plan­ning. Fun­ding is pro­ject-based and tem­po­ra­ry, respon­si­bi­li­ties are frag­men­ted across insti­tu­ti­ons with no clear lead, and the orga­ni­sa­ti­ons doing the hea­vy lif­ting are rou­ti­ne­ly left to absorb cos­ts that ser­ve broa­der public goals. The result is a fami­li­ar and frus­t­ra­ting cycle.

Transformation
Pitch
09.Jun 2026
17:40pm - 17:55pm
Sonnendeck