The Canary Islands have a pioneering regulation known as the ‘Sky Law’ (Law 31/1988), the main objective of which is to preserve the exceptional quality of the night sky above the observatories of the Canary Islands Astrophysics Institute (IAC) in Tenerife and La Palma, which have been privileged locations for astronomical observation since the 19th century. This law specifically controls light pollution, requiring rigorous technical reports and direct supervision by the IAC's Technical Office for the Protection of Sky Quality (OTPC).

At first glance, applying lighting restrictions in a marina might be perceived as a nuisance, an obstacle or simply an additional formality. However, experience in the Canary Islands has shown that overcoming these challenges and committing to going beyond mere legal compliance can bring surprising and even transformative benefits for any marina.

Beyond light pollution

Light pollution is not only an obstacle to astronomy; its effects extend widely to the environment, human health, biodiversity, the economy and safety. Managing lighting intelligently is not just about complying with regulations, it is about investing in the future and in the quality of life of the environment and the community. This conception of the starry sky as not only a scientific resource but also a cultural, environmental and socio-economic one through astro-tourism, emerges from the principles of the 2007 La Palma Declaration on ‘Defence of the Night Sky and the Right to Starlight’, promoted by the IAC and managed and promoted by the Starlight Foundation.

Key measures and how they directly benefit a marina
The ‘Sky Law’ involves specific measures that, far from being restrictive, become opportunities:

1. Smart lighting design: The law requires lighting fixtures that strictly direct light downwards, avoiding upward light emission. This optimises the use of light, focusing it where it is really needed: on jetties, transit areas and operational spaces. This improves safety and reduces light pollution.
2. Adaptive lighting and conscious schedules: Turning off or reducing unnecessary lighting during certain night-time hours using twilight or presence sensors helps to protect the natural environment. This reduces energy consumption and promotes a more harmonious coexistence with the environment.
3. Optimal spectral quality: Prioritising warm lights and limiting blue tones protects local wildlife and creates a more welcoming night-time environment. Warm, well-directed lights are less invasive, offering visual comfort and an attractive atmosphere for customers and visitors.

Tangible results

• Significant energy savings: Optimising lighting significantly reduces operating costs and lowers the carbon footprint. Lower energy consumption means fewer polluting emissions and contributes to global sustainability.
• Environmental protection and biodiversity: Reducing light pollution protects numerous species affected by intrusive lighting. Migratory birds and marine fauna, which are particularly sensitive in maritime environments, benefit directly from this conscious management.
• Improved safety: Efficient, focused lighting significantly increases night-time safety. Avoiding glare and ensuring optimal visibility in key areas reduces risks and improves the experience of sailors and visitors.
• A distinctive and attractive night-time environment: Perhaps the most appreciated benefit is the creation of a peaceful, relaxing and unique night-time environment. Enjoying the starry sky and a welcoming atmosphere from the jetties or boats adds distinctive value that attracts customers committed to sustainability and environmental quality.

Expert advice for optimal results

Adapting lighting to these standards should not be seen as a burden, but as an opportunity. In the Canary Islands, the Institute of Astrophysics (IAC) offers key support through the OTPC. Outside the archipelago, numerous specialists in sustainable lighting and night sky protection are available to help implement technical solutions that bring real and tangible value to each marina. Likewise, the Starlight Foundation advises and coordinates initiatives and projects that promote smart and innovative lighting at a national and international level.

Good lighting management is not just about complying with local regulations. It is about actively deciding to transform facilities into a more efficient, safe, environmentally responsible and aesthetically unique place. Rather than a nuisance, it is a smart decision towards a sustainable and highly attractive future.