Earth Hour at the GMRENCEN

Every year, the GMRENCEN demonstrates its commitment to shine a light on climate change by going dark and turning off all non-essential lighting in the building for Earth Hour. We encourage everyone in the building to participate by joining in our efforts to go dark on Saturday, March 25 at 8:30 p.m.

The LED lights on top of the building will go dark as a symbolic demonstration of our commitment to energy efficiency and environmental stewardship. We hope our employees will participate at home, too.

Earth hour poster

Why does the GMRENCEN participate in Earth Hour?

The GMRENCEN is proud to be one of over 10,000 landmarks to participate in the hour-long lights-off event. Earth Hour was started by the World Wildlife Fund in Sydney, Australia in 2007 and has since grown to more than 172 countries. Improving energy efficiency not only saves money on utility bills, but helps reduce emissions that contribute to climate change. Together, we’re showing Detroit that we’re helping to change climate change.

This annual event is the world’s largest public environmental action, involving hundreds of millions of people from more than 5,000 cities and towns in 135 countries/territories across all continents. For additional information, visit

GM is a four-time EPA ENERGY STAR® Partner of the Year – Sustained Excellence award winner for efforts to manage and conserve energy worldwide. For more information about GM’s sustainability commitment and leadership, visit and

How can you help?

While many people who work at the GMRENCEN won’t be in the building on Saturday, we want you to turn off the lights before you leave on Friday, and we encourage everyone to participate at home by turning your lights off from 8:30 p.m. to 9:30 p.m.

The center tower is home to the Detroit Marriott hotel and we also ask that anyone staying at the hotel over the weekend participate by turning their lights off when they leave their room.

The GMRENCEN is committed to sustainability and participating in Earth Hour is just one of the many ways we stay green. If you happen to be downtown on Saturday, snap a picture of the building with all of the non-essential lights off and share it with us on social media using the hashtags #EarthHour and #ChangeClimateChange! Share the photos with us on Facebook, Twitter and Instagram.