The penetration of renewable energy into the electricity supply mix has been much in the news recently. During the first quarter, Portugal generated three-quarters of its electricity with renewable energy. Meanwhile, in Germany, one-fifth of all electricity was generated with renewables, most of that from new sources of renewable energy, such as wind and solar. And recently, at a conference in San Francisco, attendees heard calls for generating not just 100 percent of electricity supply with renewable energy, but far more — 200 percent to 300 percent of generation — in order to meet the need for heating, cooling, and transportation as well.
Considering the great amounts of fresh water Canada holds, it is amazing how the country is behind desalination technologies.
The Energy Department announced today up to $13 million in funding to develop and test advanced components and technologies to boost the performance of marine and hydrokinetic (MHK) energy systems. The Department plans to select up to 10 awards aimed at developing advanced controls, power systems, and device structures specifically for MHK applications, which harness energy from waves, tides, or currents.
At first glance, their system might look like a regular offshore wind farm. But what happens beneath the surface is what makes all the difference, when the wind is blowing and there's not enough demand for electricity on the grid to soak up that power, or when there's demand but no wind, that's when things get interesting.