How eastern Germany might be able to phase out coal successfully | DW News

Key Concepts:

• Lignite mining, renewable energy transition, wind turbines, solar parks, land reclamation, environmental protection, ash landfills, water management, river restoration, decommissioning, heritage protection, village relocation, groundwater contamination, energy storage, green hydrogen.

1. Leak's Transition from Lignite to Renewables:

• Leak Laitz, a major German power producer and employer, is transitioning from decades of lignite mining to renewable energy sources.
• The Lausitz region is ideal for renewables due to its vast land availability.
• Leak plans to develop up to 14 gigawatts of renewable energy by 2040, equivalent to the output of 14 nuclear reactors.

2. Renewable Energy Projects:

• Wind Project: A large wind project is being built on reclaimed land at the former Jänschwalde open pit mine. Foundations are driven 26 meters deep, with drilling taking up to four weeks.
• Solar Array: A 31-megawatt solar array on an ash landfill provides power to approximately 10,000 households.

3. Environmental Protection Measures:

• The solar array construction included strict environmental and wildlife protections.
• Measures were implemented for nesting skylarks and shelters for sand lizards.
• Ash landfills are built with a clay layer impermeable to water to prevent toxins from leaching into the environment. This clay layer prevents surface water from above or below from penetrating the ash layer.

4. Water Management and Restoration:

• River rerouting occurred during the 1970s for mining operations.
• Efforts are underway to restore the river.
• Former pits are being converted into lakes using equipment previously used for coal extraction.

5. Decommissioning and Heritage:

• Decommissioned mining machines, including the F-60 conveyor bridge, are being prepped for dismantling and demolition.
• The conveyor bridge is a nesting site for kestrels, delaying demolition until the end of the nesting season.
• The steel from dismantled equipment will be melted down.
• Jänschwalde power units are slated to close by 2028, and the Thiemitz briquette factory by 2038.
• These sites were placed under heritage protection in 2025.

6. Workforce Transition:

• Former mining workers have been retrained for roles in renewable energy.
• The company claims no layoffs occurred.

7. Village Relocation:

• Until recently, entire villages were relocated to make way for mining.
• Residents received financial compensation, many of whom were former mine workers.

8. Environmental Concerns and Long-Term Impacts:

• Leak continues to mine coal elsewhere in Eastern Germany.
• Environmental activists have warned about the long-term impacts of open-pit mining.
• Open-pit mining disrupts the water system, creating groundwater funnels and altering groundwater chemistry.
• Sulfate and iron contamination in the water pose long-term challenges, potentially wiping out river life.

9. Challenges of the Energy Transition:

• While the technology exists for Leak to operate without coal, permit processes are slow, and energy storage systems are not yet ready.
• Energy storage is essential to compensate for the intermittency of solar and wind power.
• Coal power is still needed to fill the gap in energy supply.
• Stabilizing the entire energy system is a major challenge.

10. Future Energy Sources:

• Gas-fired plants powered by green hydrogen are expected to replace coal power in the long term.

11. Notable Quotes:

• "One unique feature of the Lausitz region is the vast amount of land ideal for renewables. That's why we're developing projects here on a gaw scale." - (Attribution not specified in transcript, presumably a Leak representative)
• "Open pit mining is the most extreme disruption to the water system imaginable." - (Attribution not specified in transcript, presumably an environmental activist)

12. Technical Terms:

• Lignite: A soft brown coal.
• Gigawatt (GW): A unit of power equal to one billion watts.
• Ash Landfill: A site for disposing of ash, a byproduct of coal combustion.
• Groundwater Funnels: Depressions in the water table caused by pumping groundwater.
• Green Hydrogen: Hydrogen produced using renewable energy sources.

13. Synthesis/Conclusion:

Leak is undergoing a significant transition from lignite mining to renewable energy production in the Lausitz region. While the company is investing heavily in wind and solar projects and implementing environmental protection measures, challenges remain regarding long-term environmental impacts, the pace of the energy transition, and the need for reliable energy storage solutions. The future energy mix is expected to include gas-fired plants powered by green hydrogen, but coal power remains a necessary component for now.