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Articles on Electricity

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The U.S. has thousands of lakes and reservoirs that could be paired for pumped hydro storage without the need for rivers. Ollo via Getty Images

Batteries get hyped, but pumped hydro provides the vast majority of long-term energy storage essential for renewable power – here’s how it works

A team of researchers found 35,000 pairs of existing reservoirs, lakes and old mines in the US that could be turned into long-term energy storage – and they don’t need dams on rivers.
The Curiosity Mars rover, launched in November 2011, is powered by a nuclear battery that relies on thermoelectric materials to turn heat from radioactive decay into electricity. (NASA/JPL-Caltech/MSSS)

A new approach finds materials that can turn waste heat into electricity

More than two-thirds of the world’s energy is wasted as heat. Thermoelectric materials can convert unwanted heat into electricity, but finding the best ones has been slow.
A coal mine in Alberta. Canada has adopted a carbon neutral target for 2050. It represents a major change Canada’s approach to reducing GHG emissions. (Shutterstock)

Canada is aiming for carbon neutrality and that will mean big changes to how we produce and consume energy

The goal of carbon neutrality changes everything. Canada can no longer limit itself to solutions that partially reduce emissions here and there. The chosen solution must be zero emissions.
A banner reads “Fuera Luma” (Luma out), opposing the company managing Puerto Rico’s electric grid, at a May Day protest in San Juan on May 1, 2021. Ricardo Arduengo/AFP via Getty Images

Puerto Rico has a once-in-a-lifetime chance to build a clean energy grid – but FEMA plans to spend $9.4 billion on fossil fuel infrastructure instead

Four years after Hurricane Maria wreaked havoc on Puerto Rico, federal money to rebuild its electricity system is finally about to flow. But it may not deliver what islanders want.

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