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THE BIG PICTURE: World’s Biggest Power Companies

February 1, 2019

In 2017, the 10 largest power companies, ranked by their installed generation capacity, owned 18% of total global installed capacity, while the next-largest 15 owned around 10%—meaning that the top 25 companies own nearly 30% of global installed power generation capacity, according to the International Energy Agency (IEA). Chinese companies account for more than one-eighth of global installed capacity, owing to that country’s expansion of its generation fleet
to 1,750 GW, from about 400 GW in 2003. By comparison, in 2003, European-owned utilities dominated the list, accounting for almost 13% of installed capacity worldwide. Source: © OECD/IEA 2018 World Energy Outlook.
—Copy and artwork by Sonal Patel, a POWER associate editor.

The post THE BIG PICTURE: World’s Biggest Power Companies appeared first on POWER Magazine.

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Community Solar Power Offers the ‘Best of Both Worlds’ [PODCAST]

January 28, 2019

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Laura Stern, co-founder and president of Nautilus Solar Energy, was a guest on The POWER Podcast. Founded in 2006, Nautilus is a leading acquirer, developer, and operator of community solar projects. During the past five months, the company has acquired community solar projects in Minnesota, Massachusetts, New York, Maryland, and Rhode Island.

Community solar refers to local solar facilities shared by multiple community subscribers who receive credit on their electricity bills for their share of the power produced. This solar power model is being rapidly adopted throughout the U.S. According to the Solar Energy Industries Association—the national trade association of the U.S. solar energy industry—there was 1,294 MW of installed community solar capacity at the end of June 2018, with at least one community solar project online in 42 states. Furthermore, the group says the market will add as much as 3 GW over the next several years.

Community solar allows homeowners, renters, and businesses to have equal access to the economic and environmental benefits of solar energy generation regardless of the physical attributes or ownership of their homes or businesses.…

Growth in Renewables Continues Despite Drop in UK Power Generation

January 8, 2019

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Renewable energy sources increased their share of the UK’s electricity supply in 2018, with new wind farms and biomass plants helping renewables contribute a record 33% of the country’s power in the past year. Coal-fired units, meanwhile, saw a 25% drop in their output, with coal providing about 5% of the country’s total generation.

The UK has said it wants to phase out all coal generation by 2025.

An analysis by Carbon Brief, a UK-based climate science and energy policy group that advises the government, in a report released Jan. 3 noted that the amount of electricity produced in the UK last year was at its lowest level since 1994, despite sustained population growth during the period, including an increase of 6 million people since 2005. Analysts said the reduced need for power is due to increasingly efficient use of energy and the country’s changing economy.

Carbon Brief’s report noted 335 TWh were generated by UK power plants last year, a drop of about 1% from 2017.…

EPA: Mercury Rules for Coal, Oil Power Units Not ‘Appropriate and Necessary’

December 28, 2018

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Because compliance costs to coal- and oil-fired power plants for the Mercury and Air Toxics Standards (MATS) far exceed quantifiable benefits to regulating hazardous air pollutant (HAP) emissions, the Trump administration has proposed it is not “appropriate and necessary” to regulate HAP emissions from power plants under Section 112 of the Clean Air Act (CAA), according to a document signed by acting Environmental Protection Agency (EPA) administrator Andrew Wheeler on Dec. 27.

However, the EPA did not propose to remove coal- and oil-fired power plants from the list of source categories regulated under that section of the CAA, which means the 2012-finalized MATS remains in place. The EPA’s proposal, released publicly Dec. 28, is outlined in a revision to the agency’s final supplemental cost finding for MATS, which was required by a U.S. Supreme Court decision in June 2015.

The agency on Friday also made public proposed results of the long-awaited MATS risk and technology review (RTR). The separate evaluations of risk and technology are required under CAA Section 112 every eight years after final HAP standards go into effect to determine if new developments should be incorporated into the standards.…

Power Plant Control Loop Tuning and Optimization [PODCAST]

December 2, 2018

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Optimizing power plant control systems can be challenging, but new tools are available to simplify and improve the process. On this episode of The POWER Podcast, Executive Editor Aaron Larson spoke with Jon Towslee, digital engagement leader for ABB Inc.’s Industrial Automation Power Generation & Water business.

Towslee explained how ABB Ability is focused on improving customers’ businesses by optimizing assets and operator effectiveness, and enhancing top-to-bottom performance. Solutions like the company’s loop performance monitor can be used to identify such things as transmitters that are providing bad data, noisy signal lines, and actuators that aren’t working correctly. Once maintenance crews have all equipment functioning properly, technicians can evaluate process control schemes to ensure they are responding appropriately, which then permits loops to be tuned for optimal performance.

The loop performance monitor evaluates control loops on 17 different parameters. Once individual loops are optimized, higher-level adjustments can be made. Ultimately, the tools allow plant operators to expand boundaries and operate plants more closely to maximum safe operating limits.…

Voters Back Nuclear Power, Phaseout by 2025 Nixed

November 28, 2018

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In a referendum held alongside local elections, the Taiwanese electorate voted overwhelmingly to abolish a stipulation in the country’s Electricity Act that called for all nuclear energy-based power-generating facilities to completely cease operations by 2025.

Many experts considered it a surprising victory for pro-nuclear activists. In January 2016, Taiwan’s Democratic Progressive Party garnered widespread support in elections, running on a platform that included the elimination of nuclear power by 2025. After the election, leaders quickly passed an amendment codifying the nuclear phaseout.

However, a blackout on August 15, 2017, apparently helped change many people’s views on nuclear power. The outage occurred when a contractor accidentally interrupted the gas supply to the 4,384-MW Tatan power station, Taiwan’s largest gas-fired plant. The interruption caused all six units at the site to shut down, and 6.6 million households and businesses across the island lost power for more than five hours. At the time, three of Taiwan’s six then-operational nuclear reactors were offline for maintenance.…