How CO₂ storage in wooden products lowers your project’s carbon footprint

When designing public spaces, parks, or urban infrastructure, landscape architects and developers face a shared challenge: meeting strict climate goals and reducing project emissions. While traditional materials heavily drive up a project’s carbon footprint, nature offers a powerful alternative. By integrating timber solutions, such as wooden outdoor lighting, into the outdoor environment, you turn functional infrastructure into an active tool for climate mitigation. The secret lies in long-term CO₂ storage in wood.

 

The science: wood as a natural carbon reservoir

Forests absorb CO₂ from the atmosphere through photosynthesis. The carbon captured during this process is naturally stored within the tree. When this timber is harvested and processed into durable products, scientifically known as Harvested Wood Products (HWP), the carbon remains securely locked inside for the entire lifespan of the product.

Instead of decaying in the forest and releasing carbon back into the atmosphere, CO₂ storage wooden products safely prevent greenhouse gases from contributing to global warming. This means that every wooden lamppost or bollard installed in a project is actively keeping carbon out of the atmosphere.

 

Two ways timber reduces your project’s carbon footprint 

Choosing timber outdoor lighting lowers a project’s carbon footprint in two distinct ways:

• Physical storage: every wooden structure acts as a physical carbon reservoir.
• The substitution effect: by choosing timber, you replace emission-intensive materials like steel, aluminum, or concrete.

 

Science shows that using timber for products is far more effective at reducing greenhouse gases than using wood as biofuel. In fact, every megagram (Mg) of carbon in wooden products used to replace traditional materials results in a significant net emission reduction, with benefits that

are both permanent and cumulative over time.

Real-world impact: the Timberlab STRATO 4m

To make this tangible, let’s look at the lifecycle data of a standard 4-meter Timberlab STRATO streetlight made from European Oak. While manufacturing traditional streetlights results in heavy carbon expenditures, a single

STRATO oak mast achieves a net negative carbon footprint of -119 kg CO₂.

To put this environmental saving into perspective, choosing just one wooden streetlight can offset roughly the same amount of CO₂ as driving 1,000 km in a midsize car, or powering an average household for one month.

 

 

Sustainable procurement: the urban carbon sink

For municipalities and developers, sustainable procurement is no longer just an ethical choice; it is a regulatory necessity. International climate guidelines, such as those from the IPCC, recognize Harvested Wood Products as an official carbon reservoir. This helps public bodies accurately report emission reductions.

By implementing sustainable timber lighting in public spaces, we introduce a new way to view the built environment: as an extension of the forest, a functional, illuminated “carbon sink”. 

Partnering for a low-carbon future

Create a naturally beautiful, safe environment with the added benefit of long-term CO₂ storage. By choosing the high-quality wooden luminaires from Timberlab, you integrate lasting sustainability into your design. Let’s co-create your next project. Contact our team today for tailored advice. 

 

 

Frequently asked questions

How much CO₂ is stored in wooden products?

The exact amount depends on the wood species and volume. However, utilizing timber as a replacement for materials like steel or concrete creates a massive net benefit. For example, a 4m STRATO streetlight actively accounts for -119 kg of CO₂, whereas standard steel or aluminium alternatives emit thousands of kilograms of carbon during production.

What is the substitution effect in carbon reduction?

The substitution effect means that by choosing wood, you avoid the high CO₂ emissions associated with manufacturing non-wooden materials like concrete, steel, or aluminium. Research shows these substitution benefits are both permanent and cumulative over time.

What happens to the stored CO₂ at the end of the product’s lifespan?

As long as the wood remains intact, the carbon stays locked inside. By using high durability classes, like Accoya, that naturally resist decay for decades, Timberlab ensures that the carbon remains safely stored within the product for as long as possible.