Wind farms and massive arrays of solar panels are cropping up across public and private landscapes both in the United States and abroad as users increasingly turn to “green energy” as their preferred flavor of electricity.
President Joe Biden, in fact, has directed the Interior Department to identify suitable places to host 20 gigawatts of new energy from sun, wind or geothermal resources by 2024 as part of a sweeping effort to move away from a carbon-based economy and electrical grid.
But how green is green?
Although countries are feverishly looking to install wind and solar farms to wean themselves off carbon-based, or so-called “dirty” energy, few countries, operators and the industry itself have yet to fully tackle the long-term consequences of how to dispose of these systems, which have their own environmental hazards like toxic metals, oil, fiberglass and other material.
A briefing paper released by the U.S. Environmental Protection Agency predicts these startling global numbers for countries by 2050 just for solar waste:
- United States, 10 million tons.
- Germany, 3 million tons.
- China, 20 million tons.
- Japan, 7.5 million tons.
- India, 7.5 million tons.
Solar arrays have a life cycle of about 30 years, but the rapid adoption of solar in the United States and elsewhere has the problem of disposal creeping up in the rearview mirror — faster rather than later.
Green waste growth
In 2019, according to the Solar Energy Industries Association, the United States surpassed 2 million solar installations, just three years after it hit the milestone of 1 million installations.
The paper points out that the growth of solar waste is already straining recycling and disposal capabilities, with some panels improperly ending up in municipal landfills or stacking up in warehouses while the wait continues for more inexpensive routes to recycling.
Research underscores there are few incentives to recycle solar panels, as the cost of recovering the materials outweighs the costs of extracting what can be recycled — even without adding in transportation expenses.
The issue foreshadows the potential for the creation of a new class of hazardous waste sites under EPA Superfund designations as clean energy operators walk away from a large volume of materials that contaminate the soil and groundwater.
“It is foreseeable that the same kind of practices could occur with respect to (solar) panels in the absence of very effective programs for the collecting and recycling of PV panels available where PV panels are used,” the paper said.
The problem is not limited to large-scale solar utility farms but also to individual households and businesses that over the years have opted to install rooftop solar panels.
“More homeowners are installing solar panels as they have become cheaper, but those modules have less potential for recycling and recovery of materials due to…
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