Tide Mill Institute 2018 symposium

Friday, September 28, 2018

Tide Mill Institute holds its 14th annual conference on November 10, 2018, in Beverly, Massachusetts. The symposium -- "Creating Tide Mills -- Then and Now", features educators, historians, environmentalists, archeologists and others interested in tidal power and its history.

Tide Mill Institute exists to advance the appreciation of tide mill history and technology by encouraging research, by promoting appropriate re-uses of former tide mill sites, and by fostering communication among tide mill enthusiasts. Since 2005, the Institute has held an annual symposium on the past, present, and future uses of tidal energy.

This year's conference topics focus on how humans historically extracted power from the tides, as well as on efforts to use this power again in the current era. Speakers and discussions will address topics including:
  • Medieval vertical and horizontal millwheels and their diffusion from mainland Europe.
  • Fresh-water tidal rice mills in South Carolina.
  • An in-stream tidal device in New York’s East River supplying power to the grid.
  • Proposed perpetual tidal power system for Salem Massachusetts.
  • A tide mill at the heart of the 1775 Battle of Brooklyn.
  • Winter storm surges damage historic tide mills in Massachusetts and New York.
  • Recreating gearing features of two early North Shore tide mills.
  • A new tidal energy canal for Boston?
  • The structure of tide mill dams.
Tide Mill Institute's 2018 symposium will be held on Saturday, November 10, 2018, from 8:30 am to 4:00 pm, at the Cummings Center in Beverly, Massachusetts. Registration materials are available on Tide Mill Institute's website. Lunch is included; attendees are encouraged to register by November 1.

NECA Fuels Conference 2018

Thursday, September 20, 2018

Northeast Energy and Commerce Association holds its 2018 Fuels Conference on September 27, 2018, in Marlborough, Massachusetts.

NECA is New England's oldest and most broadly-based, non-profit trade association serving the competitive electric power industry.

The program for NECA's 2018 Fuels Conference features diverse perspectives on fuels including natural gas (pipeline and LNG), biogas, oil, and other fuels, and in their uses such as electric power generation, heating, and transportation. Speakers will share their outlook for U.S. and New England natural gas markets, address the trend towards electrification of sectors like heating and transportation, explain the portfolio of fuels used to heat and power the region, and discuss what consumers can expect from lawmakers, regulators, and energy providers.

Registration is available through NECA's website.


FERC rules on Saguaro QF

Monday, August 27, 2018

U.S. energy regulators have denied a petition by a Nevada electric utility that would have rejected a regulatory filing by a local power plant. The ruling preserves the power plant's ability to sell electricity to its host utility.

The case centers on Saguaro Power Company, owner and operator of a 105 megawatt topping-cycle cogeneration facility in Henderson, Nevada. The plant sells electricity to Nevada Power Company under a power purchase agreement. Under that PPA, the energy and capacity rates paid by Nevada Power to Saguaro would be reduced by 20 percent if Saguaro loses its status as a "qualifying facility" or QF under federal law.

Since 1978, qualifying facilities have been entitled to receive certain benefits under the federal law called PURPA, but the process and requirements for becoming a QF have changed over time. Prior to August 8, 2005, in order to be a QF, a cogeneration facility was required to “produce electric energy and forms of useful thermal output (such as heat or steam), used for industrial, commercial, heating, or cooling purposes, through the sequential use of energy” and meet the applicable operating and efficiency standards. Since then, EPAct 2005 and Order No. 671 have provided that any “new” cogeneration facilities, i.e., a cogeneration facility that was either not certified as a QF on or before August 8, 2005 or had not filed a notice of self-certification or Commission application for certification prior to February 2, 2006, must also demonstrate that the “thermal energy output... is used in a productive and beneficial manner.”

In December 2017, Saguaro filed a Form No. 556 recertifying its facility as an existing cogeneration QF. That filing identified new thermal hosts who will receive thermal energy in the form of distilled water from the facility’s low pressure steam output, replacing thermal hosts previously identified in a prior self-recertification filing.

But Nevada Power Company filed a petition for declaratory order with the Federal Energy Regulatory Commission, asserting that Saguaro's self-recertification filing was deficient. Specifically, the utility argued that Saguaro failed to demonstrate its compliance with the operating and efficiency standards -- and also that the facility should be treated as "new" and thus be subject to additional standards under the Energy Policy Act of 2005 and the Commission's Order No. 671, such as whether the facility is being used in a productive and beneficial manner.

The Commission has rejected Nevada Power's petition. In its order denying Nevada Power's petition, the Commission noted that its Order No. 671 establishes a rebuttable presumption that an existing QF does not become a "new cogeneration facility" merely because it files for recertification, and that Saguaro represented having made no changes to its facility. The Commission concluded that filing for recertification to identify new replacement thermal hosts did not make the Saguaro facility "new."

US EPA proposes Affordable Clean Energy rule

Tuesday, August 21, 2018

The U.S. Environmental Protection Agency has proposed a new rule addressing greenhouse gas emissions from existing coal-fired electric utility generating units and power plants. EPA's proposed "Affordable Clean Energy Rule" is designed to replace the Clean Power Plan regulations adopted in 2015.

On August 21, 2018, EPA announced the Affordable Clean Energy or ACE Rule. As described by the agency, the rule encompasses four main actions to reduce greenhouse gas emissions:
  • Defining the “best system of emission reduction” (BSER) for existing power plants as on-site, heat-rate efficiency improvements;
  • Providing states a list of “candidate technologies” that can be used to establish standards of performance and be incorporated into their state plans;
  • Updating the New Source Review (NSR) permitting program to further encourage efficiency improvements at existing power plants; and
  • Aligning regulations under Clean Air Act section 111(d) to give states adequate time and flexibility to develop their state plans. 
According to EPA's regulatory impact analysis, replacing the Clean Power Plan with the ACE Rule would reduce CO2 emissions from their current level, and "could provide $400 million in annual net benefits," largely in the form of reduced compliance burden on covered power plants. While EPA adopted the Clean Power Plan in 2015, in 2016 the Supreme Court granted opponents stay of the regulations, and they never took full effect.

EPA will take comment on the ACE Rule proposal for 60 days after publication in the Federal Register and will hold a public hearing.

Laos dam construction and collapse

Thursday, July 26, 2018

A dam under construction in Laos as part of a hydropower scheme has collapsed, causing flooding and damage.

At issue is the Xe-Pian Xe-Namnoy project, a 410-megawatt hydroelectric power project under development for Xe-Pian Xe-Namnoy Power Company (PNPC). PNPC is a joint venture among the government of Laos and construction and power companies from South Korea and Thailand. The project, whose construction costs are estimated at about $1 billion, involves the construction of three primary dams to form reservoirs. Construction of the system was reportedly 90% complete, with commercial operation projected for 2019, and an agreement in place agreement to export 90% of project power to Thailand. The project has been touted for the degree of international investment involved, although some have criticized the project for insufficient local benefits.

From an engineering perspective, the project's primary dams impound water in a large reservoir. The project also includes three auxiliary "saddle dams" near several heads of the reservoir, essentially to prevent the reservoir from spilling down the impoundment's back side as it fills.
A map of the project, found at http://www.pnpclaos.com/index.php/en/project/maps
Project maps posted online by PNPC show saddle dams on three of the main reservoir's western branches.
Another project map found at http://www.pnpclaos.com/index.php/en/project/maps

One of these smaller saddle dams reportedly failed on July 23, 2018, allegedly due to severe rains. Saddle Dam D -- a facility 8 meters wide, 770 meters long and 16 meters high -- was built to support water diversion around the project's reservoir. But the structure reportedly fractured, causing water to spill downstream to the Xe Pian river outside of the project's intended path of water flow. According to the prime minister of Laos, at least 26 people have died and 131 are missing from the resulting flooding, and several villages .

Response and recovery actions are ongoing. The dam collapse highlights the importance of safety in dam construction and reservoir operations, as did the February 2017 failure of the Oroville Dam's spillway in California.

FERC Order 848, cyber security and reliability

Thursday, July 19, 2018

U.S. energy regulators have issued an order directing the nation's electric reliability organization to strengthen its standards for the mandatory reporting of cyber security incidents.

Federal law authorizes the Federal Energy Regulatory Commission to regulate significant aspects of the bulk electric system's reliability. The Commission's jurisdiction over reliability covers the nation's electric reliability organization, North American Electric Reliability Corporation (NERC), which is charged with developing and submitting mandatory reliability standards for the Commission for approval.

Following increased concern over cybersecurity and hacking affecting utilities, in 2017 the Commission issued a Notice of Proposed Rulemaking proposing to direct that NERC develop enhanced Cyber Security Incident reporting requirements. At that time, then-current reliability standards generally required responsible entities to report Cyber Security Incidents only if they have “compromised or disrupted one or more reliability tasks. But the Commission expressed a concern that this reporting threshold "may understate the true scope of cyber-related threats facing the Bulk-Power System, particularly given the lack of any reportable incidents in 2015 and 2016." As a result, the Commission proposed requiring NERC to develop and submit modifications to its reliability standards, to require the reporting of cyber security incidents that compromise, or attempt to compromise, certain security infrastructure.

On July 19, 2018, the Federal Energy Regulatory Commission issued its Order No. 848. Through that order, the Commission adopted its own proposal to "improve awareness of existing and future cyber security threats and potential vulnerabilities." As described by the Commission, Order No. 848's directive consists of four elements:
  1. responsible entities must report Cyber Security Incidents that compromise, or attempt to compromise, a responsible entity’s Electronic Security Perimeter (ESP) or associated Electronic Access Control or Monitoring Systems (EACMS);
  2. required information in Cyber Security Incident reports should include certain minimum information to improve the quality of reporting and allow for ease of comparison by ensuring that each report includes specified fields of information;
  3. filing deadlines for Cyber Security Incident reports should be established once a compromise or disruption to reliable BES operation, or an attempted compromise or disruption, is identified by a responsible entity; and
  4. Cyber Security Incident reports should continue to be sent to the Electricity Information Sharing and Analysis Center (E-ISAC), rather than the Commission, but the reports should also be sent to the Department of Homeland Security (DHS) Industrial Control Systems Cyber Emergency Response Team (ICS-CERT). Further, NERC must file an annual, public, and anonymized summary of the reports with the Commission.
The Commission directed NERC to submit these modifications to its reliability standards within six months of Order No. 848's effective date.

NC dismisses PURPA complaint

Focusing on form over substance, North Carolina utility regulators have dismissed a hydroelectric generator's claims that it is entitled to sell the Yadkin River projects' hydroelectricity to local utilities at specified prices.

Cube Yadkin Generation, LLC owns hydroelectric facilities located on the Yadkin River in North Carolina. The company acquired the former Alcoa Corp. dams in 2016. Prior to that purchase, Cube had some discussions with local utilities Duke Energy Progress, LLC and Duke Energy Carolinas, LLC, regarding the sale of power from the hydro projects to the utilities under the federal Public Utility Regulatory Policies Act (PURPA).

PURPA allows certain small or renewable independent power producers meeting defined criteria to self-certify as "qualifying facilities" entitled to special rate and regulatory treatment. These benefits can include the right to sell energy and capacity to the generator's local host utility, usually at either at the utility's avoided cost or at a negotiated rate. Federal regulations generally give QFs the option to sell energy "as-available," or under a long-term contract or other legally enforceable obligation for delivery of energy or capacity over a specified term.

After Cube Yadkin acquired the dams, the utility ultimately refused to buy hydropower from three of the dams on Cube's terms. In March 2018, the generator complained to the North Carolina Utilities Commission. In its complaint, the company asked for a declaratory ruling that the utilities are obligated to purchase the projects' output at rates established under PURPA, as well as other relief including a requirement that the utilities enter into power purchase agreements with Cube for a term of not less than 10 years.

In a July 16, 2018 order, the North Carolina Utilities Commission dismissed the company's complaint. In that order, a majority of the Commission found that the generator had not submitted a "Notice of Commitment" form to the utility, which the majority said was required under North Carolina's implementation of PURPA if a generator wished to establish a legally enforceable obligation that the utility purchase its power. Noting that Cube hadn't submitted the Notice of Commitment form, and therefore that Cube hadn't established a legally enforceable obligation, the Commission denied Cube's request for declaratory ruling.

The Commission next considered whether Cube should be granted a waiver of the requirement to use the Notice of Commitment form. After recapping its view of the purpose of establishing a legally enforceable obligation, and how the Commission had developed its requirements for establishing a legally enforceable obligation, the Commission rejected Cube's request for waiver of the required use of the Notice of Commitment form. As a result of these conclusions, the Commission granted the utilities' motion to dismiss.

Two Commissioners dissented from the majority decision, noting that the majority opinion dismissed the case without allowing the full development of the record or a hearing on the merits.