New York Just Greenlighted The Country’s Biggest Offshore Wind Farm Yet

Ireland Wind Power Exports drive record renewable electricity, with onshore and offshore wind capacity surging, SEAI report finds, cutting fossil fuel imports and CO2 emissions and boosted by Corrib gas field and windier conditions.

Key Points

Electricity exports enabled by record onshore and offshore wind in Ireland, reducing fossil fuel imports.

✅ Wind capacity rose to 2,827 MW, boosting electricity generation

✅ Renewables met 27% of gross electricity consumption in 2016

✅ CO2 cuts of 3.1 Mt and lower fossil fuel import spend

Ireland became an exporter of electricity last year on the back of record production from onshore and offshore windfarms, in line with a record year for renewables globally in 2016, and this year’s production could be even higher, a new report shows.

And the country’s spending on imported fossil fuels fell by €1.2 billion last year following the opening of the often-controversial Corrib gas field off the Mayo coast.

A report from Sustainable Energy Authority of Ireland (SEAI), due to be published on Tuesday, highlights major changes in where Ireland’s energy comes from, as renewables surpassed fossil fuels in Europe for the first time, and how it is now being consumed.

Ireland produced its largest amount of renewable electricity ever last year, reflecting leadership in integrating renewables onto the grid, on the back of the introduction of an additional 400 megawatts of power from wind turbines.

This brought the total capacity of Ireland’s wind turbines, on land and at sea, to 2,827 megawatts, amid rising European wind investments across the region, according to the SEAI’s annual Energy in Ireland Report. It includes analysis going back to 1990.

Most of the turbines that entered service last year did so towards the end of last year, so this year’s figures should be higher again, the report says. In addition, the more windy conditions seen this year will also boost production.

Renewable electricity generation accounted for more than 27 per cent of gross electricity consumption in 2016, with over one-third green within four years expected nationally, while the use of renewables in electricity generation reduced CO2 emissions by 3.1 million tonnes and avoided €192 million of fossil fuel imports.

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Climate Change Effects on Global Wind Power include shifting wind resources, altered temperature gradients, and regional hotspots, with declines in Northern Hemisphere mid-latitudes and gains across the Southern Hemisphere and tropics, according to climate models.

Key Points

Shifting temperature gradients cut wind potential in the north and boost resources across southern and tropical regions.

✅ Northern mid-latitude winds weaken under high emissions

✅ Southern and tropical hotspots strengthen over oceans

✅ Planning must adapt as models show regional uncertainty

In the next century, wind resources may decrease in many regions of the Northern Hemisphere and could sharply increase in some hotspot regions down south, according to a study by University of Colorado Boulder researchers. The first-of-its-kind study predicting how global wind power may shift with climate change appears today in Nature Geoscience.

'There's been a lot of research looking at the potential climate impact of energy production transformations-like shifting away from fossil fuels toward renewables,' said lead author Kris Karnauskas, CIRES Fellow and Assistant Professor in Atmospheric and Oceanic Sciences (ATOC) at CU Boulder. 'But not as much focuses on the impact of climate change on energy production by weather-dependent renewables, like wind energy.'

Wind powers only about 3.7 percent of worldwide energy consumption today, but global wind power capacity is increasing rapidly-about 20 percent a year, and long-term analyses like the BNEF 2050 outlook point to major growth ahead. Karnauskas and colleagues Julie Lundquist and Lei Zhang, also in ATOC, wanted to better understand likely shifts in production, so they turned to an international set of climate model outputs to assess changes in wind energy resources across the globe. The team then used a 'power curve' from the wind energy industry to convert predictions of global winds, density and temperature into an estimate of wind energy production potential.

While not all of the climate models agreed on what the future will bring, substantial changes may be in store, especially a prominent asymmetry in wind power potential across the globe. If carbon dioxide emissions continue at high levels, wind power resources may decrease in the Northern Hemisphere's mid-latitudes, and increase in the Southern Hemisphere and tropics by 2100.

Strangely, the team also found that if emission levels are mitigated, dropping lower in coming decades, they see only a reduction of wind power in the north-it may not be countered with an increase of power in the south.

Renewable energy decision makers typically plan and install wind farms in areas with consistently strong winds today. For example, the prairies of the American Midwest-persistently windy today and in recent decades-are dotted with tens of thousands of turbines. While the new assessment finds wind power production in these regions over the next twenty years will be similar to that of today, it could drop by the end of the century.

By contrast, potential wind energy production in northeastern Australia could see dramatic increases.

Potential global wind power in coming years. Top images represent next 40 years, bottom images represent next 80 years. Left images represent lower emissions, right images represent higher emissions scenario. Red areas are wind power hotspots, blue areas are reductions. White areas are uncertain. Image: Kris Karnauskas/CIRES

There were different reasons for the Northern decline and the Southern increase in wind power potential in the high-emissions scenario, Karnauskas and his co-authors found in their analysis of modeling results. In the Northern Hemisphere, warmer temperatures at the North Pole weaken the temperature difference between this cold region and the warm equator. A smaller temperature gradient means slower winds in the northern mid-latitudes.

'These decreases in North America occur primarily during the winter season, when those temperature gradients should be strong and drive strong winds,' said Associate Professor Lundquist, who is also a RASEI Fellow. In addition to North America, the team identified possible wind power reductions in Japan, Mongolia and the Mediterranean by the end of the century. This may be bad news for the Japanese, who are rapidly accelerating their wind power development, with growth despite COVID-19 observed in recent years.

In the Southern Hemisphere, where there is more ocean than land, a different kind of gradient increases: land warms faster than the surrounding, much-larger oceans. That intensified gradient increases the winds. Hotspots for likely wind power increases include: Brazil, West Africa, where hydropower support could complement wind growth, South Africa and Australia.

'Europe is a big question mark,' added Karnauskas. 'We have no idea what we'll see there. That's almost scary, given that Europe is producing a lot of wind energy already, with offshore wind market poised to become a $1 trillion business in the coming decades.' The trend in this region (and in others, like the southeastern United States) is just too uncertain: some models forecast wind power increase, and others, a decrease.

In a warming world, harnessing more wind power in coming decades could be critical for countries trying to meet emission reduction standards set by the Paris Climate Agreement, even as Africa may not go green this decade, highlighting regional challenges. The team's results may help inform decision-makers across the globe determining where to deploy this technology.

'The climate models are too uncertain about what will happen in highly productive wind energy regions, like Europe, the Central United States, and Inner Mongolia,' said Lundquist. 'We need to use different tools to try to forecast the future-this global study gives us a roadmap for where we should focus next with higher-resolution tools.'

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