Norway Plans Deep Sea Cables to Germany, England

by Trevor Smith

Norway is in the process of finalizing plans to build massive submarine power cables to link its power grid to England’s and Germany’s grids. The move is being praised as a win for clean energy, as the cable will allow for exporting excess hydroelectric energy from Norway to England and Germany. The cable to Germany is set to be completed by 2018, while the cable to England will be finished by 2020 (Reuters 2015). Continue reading

Hamburg is an Industrial City Reborn with a Renewable Energy Economy

by Liza Farr

Increasing regulation of fossil fuels and pollution, and the shift of jobs from industrial to tech has left many industrial cities with struggling economies. In Germany, the industrial city of Hamburg has fought this trend and is now known as the center of renewable energy for the nation. This past October, HusumWind, one of the world’s largest wind power conferences, was held in Hamburg (Hales, Oct 9 2014). There are already 5,000 wind industry employers in the city, and that number is expected to double with the expansion of offshore wind facilities (Hales, Oct 9 2014). Nearly all the leading international wind companies have offices in the region (Hales, Oct 9, 2014). Twenty five thousand people are already working in renewable energy in Hamburg, and experts predict this number will grow by 40% by 2015 (Renewable Energy Hamburg, October 2012). Nineteen hundred and eighty green tech companies with 33,400 employees are based in the city (Hales Oct 9, 2012). The city is the central planning location for solar farms in Germany and across the world, and the most important development and management location for wind power in Germany (Renewable Energy Hamburg, October 2012). Continue reading

Landfill Bio-Stabilization through Aerobic Aeration

by Hilary Haskell

Landfill aeration serves as an economically and technologically viable option for decreasing the duration of landfill after-care, through the bio-stabilization of landfill contents. Ritzkowski and Stegmann (2013) based their analysis on the determination of carbon balances through waste characterizations and online monitoring. The biodegradable organic carbon (BOC) content of a landfill is the main determinant affecting landfill bio-stabilization rates, while landfill settlements and temperatures are also important indicators of stabilization. Using BOC, the authors determined the total and remaining stabilization periods for aerated landfills. This study used a landfill in Northern Germany that required 6.2 years to stabilize after a volume of 63 million m3 of air had been applied to increase the rate of bio-stabilization by a factor of six. These findings suggest that landfill aeration may substantially decrease time and costs associated with landfill after-care by reducing cumulative leachate and landfill gas emissions. Continue reading