Paving the way for sustainable lighting
LEDs offer efficiency, but approximately one-fifth of the UK’s electricity consumption is still attributed to lighting, so our net zero goals won’t be met without action in that area. Light fittings, like any other manufactured product, require production and transportation. Leslie Thomas, Lighting Technology Manager at Fagerhult UK, explores strategies for sustainable lighting production and usage.
Awareness and regulation are encouraging more artificial light, not less
Workspace lighting is tightly regulated. Traditionally, those rules focussed on task lighting, which primarily meant assessing the amount of light falling on a work surface. But, light affects us in other ways too. Brightly lit spaces can create a sense of wellbeing, with regulation increasingly encouraging more and more light around us in work environments.
Light is also central to our ability to sleep well. Humans have a circadian rhythm, a biological clock that makes us feel wakeful at certain points in the 24-hour cycle, and sleepy at others. But we also experience circadian entrainment – clock adjustment in response to stimuli such as bright morning light. Even quite powerful artificial lights give us much less Illuminance than life under a big blue sky, perhaps not enough to work as an alertness trigger. Standards such as the WELL certification for healthy buildings require bright morning light, because this ensures both daytime alertness and evening drowsiness.
Regulation is also capturing the fact that developed-world workers are an ageing population, with older eyes needing more light. Meanwhile, many developing countries are expecting developed-world levels of light.
So how do we limit artificial light?
The result is a world that generates more and more light, but knows it should be doing the opposite. What can be done? The answer is smarter control of our lighting, using each artificial light only as needed.
If daylight sensors assess how much light is coming in the window, a smart system that knows how much is required overall can adjust minute to minute, dimming or deactivating fittings where the need is already being met. More light is going to be present nearer that window, so these systems must work per luminaire, not per room. Architects and others must play their part also, harvesting that precious resource, daylight.
Many spaces now have presence detectors, so lighting switches off automatically when it would be wasted. Subtler systems go further, assessing for example which desks in the room are occupied, and adjusting so that light levels fall off, away from each worker.
Material matters
Right now, most of the carbon cost of a light comes from electricity. But, for those using renewable energy, the majority of the footprint is materials. This matters, because we are all heading to that world. How can we cap the impact of lights as physical objects?
There isn’t a single answer, but some choices are more sustainable than others. Multilume Re:Think is a lightweight unit made entirely from hardened cardboard. Discovery is a plastic fitting, with around 30% of the plastics made by fossil free plastics. With a wooden frame and recycled reflectors from discarded TVs, Kvisten is 77% made up of recycled or renewable materials.
Fagerhult also has an initiative called Re:Furbish. Send along one old light fitting, even one we didn’t create, and we’ll assess what we could do with it. A typical case would see LED strips replacing fluorescent tubes in the same housing.
Lighting makes our lives better and more productive. With commitment and smarter systems, we can enjoy the benefits of that sustainably.
Good light through the years
Times change but people stay the same. We gather around light. Since 1945, we have been creating lighting for work, creativity, and well-being; in harmony with natural light and through smart technology that follows human needs. We create the right light in the right place – when it is needed.
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Exploring circularity: The only straight way forward
In the drive towards sustainability, the Circular Economy vs. Linear Economy is crucial. The Circular Economy prioritises material reuse and longevity to minimise waste. At Fagerhult, we're committed to circularity, designing products for durability and recyclability. In this series, we'll delve into our commitment with insights from Fagerhult Group brands. First, we spoke with Niclas Thulin, Fagerhult's Sustainability Manager. In the quest for a sustainable and environmentally conscious future, the distinction between the Circular Economy and the Linear Economy has become a central focus. Circularity prioritises maximising the reusability and lifespan of materials and resources, striving to reduce resource consumption and minimise waste generation. At Fagerhult, we believe circularity is the only way forward, and are committed to the development and design of products that both last over time and can be reused or recycled. In this four-part series, we spoke to brands within the Fagerhult Group to find out more about their targets, solutions, and approaches to circularity. First up, we caught up with Niclas Thulin, Sustainability Manager at Fagerhult. What approach do you take to circularity at Fagerhult? We are working to meet Science Based Targets in line with the Paris Agreement’s 1.5 °C target, which is ambitious. To achieve these science-based targets, we have four focus areas: circular solutions, energy efficiency, pure materials and conscious production. ‘Circular solutions’ focuses on how we will make the transition from a linear to circular economy. In terms of targets, our initial focus was to implement circular business models, and the second is to enable products to be repaired, refurbished, reused or recycled. Having these targets in place creates a direction for us when it comes to new product development. Do you design your products with disassembly and end-of-life recycling in mind? How easy is it to disassemble your products for recycling or refurbishment? We’ve learned a lot about refurbish and reuse, and we want to design for circularity. For example, we don’t use glue within our products, we try to think modular wherever possible, and we now not only test how to assemble our products, but also to disassemble, making adjustments where necessary to make them even easier to disassemble. Do you offer remanufacturing or refurbishment services for your lighting products? Our Re:Furbish concept is about giving old luminaires new life. A customer might have an existing solution they want to reuse or decrease their environmental impact from, so they may ask us to upgrade. We use as much from the existing light fitting as possible, whilst at the same time upgrading it so that it’s equally energy efficient and has the same function as a new luminaire. Our designers will put together a prototype based on reusing as much of the materials as possible – for example the body, the glare protector, the reflector – the good thing about using the body is that it is one of the components with the most embodied carbon. A lot of our products were initially designed over 20 years ago, and we have been good at using screws instead of glue, so most of the lights can be recycled or reused. The light fitting can be easily opened up and the electronics replaced with something we called a ‘Re:Furbish kit’ – it’s easy to install and doesn’t take much time. We send it to the customer so they can see the solution, having evaluated and tested it from an energy perspective, producing a climate calculation which the customer can compare to the old solution. What we are trying to do is find a way of minimising impact from the materials but ensure the products are equally or more efficient as a new alternative, whilst maintaining the light quality so that it is still beneficial for the end user, too. How do you ensure circularity throughout your supply chain, from sourcing raw materials to manufacturing and distribution? We take a holistic approach right from the beginning – reducing materials in new product development, making materials thinner, making luminaires smaller, and not over specifying products, so having less luminaries in the same space. Another example of our circular solutions concept is our product Kvisten, launched last year and built from both renewable material and reused plastic. The reflector is made from old TV screens, removed from the TVs at the end of life, then cut to size for their new function by our supplier. Through innovations like this we are trying to implement reused materials in our new product development, and our target is that by 2030 our products will be made of 80% renewable, recycled or reused content. In terms of minimising the impact of transportation, we do the installation on-site, which is a benefit because we don’t need to freight the product to site and back, so we are minimising the impact of transportation. This is only one piece of the lifecycle of course – our goal is for all of Fagerhult’s newly developed luminaries to have an environmental product declaration – providing transparent information about the environmental impact of a product during its life cycle.