Promega prioritizes greenhouse gas reduction from all global operations. We are currently ahead of our 2020 target for carbon emissions thanks to actions to reduce impacts from energy usage.
Minimizing Electricity Usage and Associated Emissions
In the last year, gross electricity usage decreased by 2% even with an increase in building footprint. This saved over 524,000 kWh, the equivalent of the electricity used by nearly 50 homes annually. Transitioning operations to more energy efficient facilities, projects to improve energy efficiency and the daily efforts of all employees worldwide made these reductions possible. Electricity usage contributes to over 50% of our carbon emissions and minimizing these effects is a focus at all Promega locations. To this end, we invest in energy efficiency, generate electricity from photovoltaic panels and purchase electricity from renewable sources. Recent highlights include:
Company-wide initiatives to incorporate high-efficiency LED lighting continued in 2019. Renovations were completed at three more facilities last year, affecting over 1,000 lamps and saving over 117,000 kWh annually.
Connecting our R&D facility to a more efficient central chiller plant has delivered saving over 500,000 kWh each year. In 2020, we will extend our central plant to additional facilities to further optimize energy requirements.
A 562 kW photovoltaic array was added to our newly renovated parking garage in Madison, Wisconsin and is our largest renewable energy installation to date.
Renewable energy is a key strategy to limit greenhouse gas emissions from operations. In 2019, our largest solar array was installed on the newly renovated Feynman parking ramp. This system will generate 562.5 kW and quadruple our current renewable energy production. This array alone will generate enough energy to power over 100 homes each year. We also have committed to large scale photovoltaic arrays on the Feynman Center and the new R&D center in in 2020. Additional facilities that use renewable energy sources such as photovoltaic and geothermal currently include:
Promega GmbH in Waldorf Mannheim, Germany
Promega UK in Southampton
Promega Italia in Milan
Promega Biotech Ibérica in Alcobendas, Spain
Promega Biotech AB in Stockholm, Sweden
Promega AG in Switzerland
Promega Brazil in Sao Paulo
The Aviation Operations building in Madison, WI
The da Vinci facility in Madison, WI
Conserving Natural Gas
In the last year, gross natural gas usage reduced by 2% or by 8% as indexed to revenue. Natural gas is our largest source of direct air emissions and our third largest source of overall emissions. Natural gas is used primarily at manufacturing sites for heating and production-related processes. Geothermal wells, solar water heaters and heat capture technology help minimize heating requirements and related emissions