There seem to be two schools of thought in regards to achieving greater sustainability. One is based on a behavioural change to tackle societal and environmental challenges. More precisely in managing resources with moderation, restraint, and constraint (e.g. Reduce-Reuse-Recycle mantra). The other approach focuses on developing and implementing technologies to drive change. Here, the premise is that greater sustainability can be achieved if green technology is developed and deployed rapidly. With this in mind and considering the various sustainability challenges as hotels enter this new decade, what are the three (3) technologies to implement in 2020?"

Willy Legrand
Willy Legrand
Professor at IU International University of Applied Sciences Germany

There are no doubts that clean technologies play a tremendous role in mitigating our emissions. The global community has delayed climate action and the coming decade is crucial in pulling our emissions down and (possibly) implement some negative-emissions technologies.

In the meantime, the World Resource Institute (2019) estimates that roughly US$25 trillion need to be invested in clean, affordable and reliable energy infrastructures over the next 15 years. This would ensure a shift into a low-carbon economy. Besides investing in renewable energy (RE) production, energy efficiency (EE) is often a highly cost-effective path to take. Bottom line: every sector of our economy, including the hotel sector, is required to implement clean technologies to achieve decarbonization.

With this in mind (RE & EE), here are my Top 3 Technologies to Implement in 2020:

1 - Solar Photovoltaic (PV): In Germany, the price for a typical 10 to 100 kilowatt-peak photovoltaic(kWp) rooftop-system was around €14,000/kWp in 1990. Now, such systems cost about €1,070/kWp on average –a net price regression of 92% over that period. The story on the cost of solar PV is similar across many regions with a global weighted average cost of US$1210/kW (WEF, 2019). It is estimated that solar PV will be the cheapest electricity source by 2030 (Energy Intelligence).

2 - Occupancy Sensors: Data shows that 65% of the energy is used for heating, ventilation and air conditioning (HVAC) and lighting purposes of a hotel building (depending on the geographical location). There has been a massive improvement in technology linked to energy management systems. Thermal occupancy sensors, motion detection, and network presence sensing all have the potential to reduce guestroom's energy intensity from lighting and HVAC.

3 - Carbon Measurement Tools: How do we know that our RE and EE efforts are making a difference? Auditing a property's starting position and keeping track of progress towards decarbonization is crucial. Large chains often have a proprietary system in place. Smaller chains or individual properties can use available third-party tools. The Hotel Carbon Measurement Initiative (HCMI) developed by the International Tourism Partnership and the World Travel & Tourism Council (with the support of leading hotel chains), used by some 24.000 hotels worldwide is a good place to start. For small and medium-sized hotels in the European Union, the Hotel Energy Solutions (HES) e-toolkit* is an online platform for simple hotel energy audits and carbon emission calculations. The tool also provides guidance for solutions, has a Return on Investment calculator and offers benchmarking possibilities.

*HES is a UNWTO-initiated project in collaboration with EU leading agencies in Tourism and Energy as well as the IH&RA

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