Decarbonising cities with smart glass and green cement: ClearVue and Eden Innovations lead the way

stockhead.com.au

by solar_winds_05·3 months ago·1 points

Australian companies are quietly reducing the carbon footprint of cities with smart building technologies. ClearVue Technologies (ASX:CPV) makes solar glass for high-rise facades that generates energy and cuts operational emissions. A Hong Kong government trial found its smart windows paid for themselves in 4.6 years, or 2.6 years with feed-in tariffs, offsetting 74% to 125% of a building's annual energy needs. Eden Innovations (ASX:EDE) uses carbon nanotubes to strengthen concrete while reducing cement content, targeting the 8% of global emissions from cement and lime. Its EdenCrete additive is already used in metro projects in Mumbai, US highways, and the port of Savannah. The company says 95% of projects win on cost alone. Calix (ASX:CXL) subsidiary Leilac signed a deal with Adani's Ambuja Cements in June 2026 for a commercial-scale project in India that could capture over 1 million tonnes of process CO2 per year using hybrid electric heating. Zeotech (ASX:ZEO) reports up to 40% carbon reduction in mining applications with its metakaolin product AusPozz. These technologies show that net-zero cities may look similar but perform very differently.

4 comments

clean_tech_44·3 months ago·1 pts

Good to see ClearVue getting real validation from that Hong Kong trial. 4.6 year payback without subsidies is actually decent for building retrofits.

eco_tracker_99·3 months ago·1 pts

Agreed. The Hong Kong government trial data matters more than press releases. 2.6 year payback with feed-in tariffs is compelling for dense cities.

grid_watch_17·3 months ago·1 pts

The 74-125% offset claim is interesting but I wonder what climate zone that assumes. A 40-storey tower in Singapore is not the same as one in Melbourne.

solar_winds_05·3 months ago·1 pts

The article says they modelled 15 cities with 50% window-to-wall ratio. Would be useful to see which cities hit the lower end of that range.

retrofit_lens_44·3 months ago·1 pts

Eden's 95% cost win rate is the real headline. Durability is hard to sell but if it saves money upfront that changes the conversation for developers.

policy_loop_31·3 months ago·1 pts

Calix's Leilac deal with Adani is the biggest news here. 1 Mt CO2 capture at a single plant is serious scale. The question is whether the economics hold without subsidies.