Nuclear power plants’ reactor pressure vessels —the massive steel jars that hold a nuclear plant’s fissioning fuel—face incessant abuse from their radioactive contents. And they must be built with extra toughness to withstand pressure and temperature swings during loss-of-cooling accidents like the one that struck Japan’s Fukushima nuclear power plant in 2011. But nuclear safety authorities have recently discovered weaknesses in several pressure vessels, and their contrasting responses suggest that the ultimate lessons from Fukushima are still sinking into international nuclear power culture. This is especially true in the United States, where the Nuclear Regulatory Commission is resisting calls to mandate tougher inspection of RPVs. Continue reading “NRC Resisting Europe’s Nuclear Safety Upgrades”
Two of the big European power grid stories from 2014 were the software-enabled enlargement of the European Union’s common electricity market and a spate of nuclear reactor shutdowns that left Belgium bracing for blackouts. Those developments have now collided with revelations that the optimization algorithm that integrates Europe’s power markets could potentially trigger blackouts.
The flaw resides, ironically, in a long-anticipated upgrade to Europe’s market algorithm. This promises to boost cross-border electricity flows across Europe, expanding supplies available to ailing systems such as Belgium’s. Earlier this month market news site ICIS reported that the upgrade, in the works since the launch of market coupling in 2010, has been delayed once again Continue reading “Could Europe’s New Grid Algorithm Black-out Belgium?”
A bad year for nuclear power producers has Belgians and Britons shivering more vigorously as summer heat fades into fall. Multiple reactor shutdowns in both countries have heightened concern about the security of power supplies when demand spikes this winter.
In Belgium, rolling blackouts are already part of this winter’s forecast because three of the country’s largest reactors — reactors that normally provide one-quarter of Belgian electricity — are shut down. Continue reading “Nuclear Shutdowns Put Belgians and Britons on Blackout Alert”
After months of negotiation, the French government has unveiled a long-awaited energy plan that is remarkably true to its election promises. The legislation’s cornerstone is the one-third reduction in the role of nuclear power that President François Hollande proposed on the campaign trail in 2012.
Under the plan, nuclear’s share of the nation’s power generation is to drop from 75 percent to 50 percent by 2025, as renewable energy’s role rises from 15 percent today to 40 percent to make up the difference. That is a dramatic statement for France, which is the world’s second largest generator of nuclear energy, after the United States. France has a globally-competitive nuclear industry led by state-owned utility Electricité de France (EDF) and nuclear technology and services giant Areva. Continue reading “Renewables to Dethrone Nuclear Under French Energy Plan”
Blackouts this week in New Delhi and surrounding states are providing a dramatic backdrop for a bold promise by India’s new prime minister, Narendra Modi, whose Hindu nationalist party swept to power in a landslide election last month. As a scorching heatwave drove power consumption beyond the grid’s capacity, Modi’s government vowed to deliver “round-the-clock power for all by 2022,” reports the Wall Street Journal.
That will be an awesome task. Nearly one-quarter of India’s 1.26 billion citizens lack grid access. And India’s utilities have struggled to keep up with demand from those who are connected. Power cuts are frequent. Continue reading “Amid Blackouts, India’s New Leader Vows 24-7 Power for All”
Government incentives for a pair of proposed nuclear reactors could cost U.K. taxpayers as much as £17.62 billion, thus exceeding the reactors’ projected cost. The EC figure is a preliminary estimate included in an initial report to London published on Friday by European Commission competition czars. The letter notifies the British government that—as we predicted in December—Brussels is launching a formal investigation to assess whether the subsidies violate European state aid rules.
The preliminary findings suggest that the U.K. and E.C. are on a collision source. As the Financial Times summed it up this weekend: “The severity of [the EC’s] initial concerns will cast a shadow over government hopes to win approval for the deal.”
Germany’s bold transmission plan is a go. The Bundesrat, Germany’s senate, has accepted the plan’s enabling legislation forwarded to it by the Bundestag (Germany’s parliament), according to the authoritative German Energy Blog. There is every reason to expect that the plan’s core element — four high-voltage direct current or HVDC transmission lines profiled by Spectrum last month — will get built.
That is good news for Germany’s grid and those of its neighbors. All are straining to manage powerful and variable flows from the wind turbines and solar panels that provided 12 percent of Germany’s power generation last year.
Elements of both the HVDC system design and the legislation should ease construction of the HVDC systems. On the design side, Germany’s transmission system operators have specified advanced converters whose ability to arrest and clear DC line faults will reduce the risk of running overhead lines. This means the HVDC lines can use existing rights-of-way used by AC lines. In fact, they can be hung from the same towers. Read the May 2013 story for extensive discussion of the advanced modular multilevel converters.
The enabling legislation, meanwhile, will simplify line permitting by making a federal court in Leipzig the only forum for legal disputes concerning the projects. Separate legislation passed by the Bundesrat and Bundestag makes Germany’s federal networks regulator, the Bundesnetzagentur or BNetzA, the sole permitting authority for power lines that cross Germany’s state or national borders. These measures — for better or worse — cut out state-level officials that face greater pressure from local project opponents and may be more sympathetic to their concerns.
Add it all up and Germany is en route to become the first country with HVDC lines playing a critical role at the core of their power grid. It is arguably the first real challenge to AC’s century-plus reign as the top dog in power transmission since DC-advocate Thomas Edison lost the War of Currents. Tesla and Westinghouse may just be rolling over.
This post was created for Energywise, IEEE Spectrum’s blog on green power, cars and climate