Thursday, December 07, 2023

 

UK Plans First Commercial-Scale Deployment of Floating Wind in Celtic Sea

floating offshore wind farm
UK looks to launch the first commercial-scale floating wind farms in the Celtic Sea (Crown Estate)

PUBLISHED DEC 7, 2023 9:38 PM BY THE MARITIME EXECUTIVE

 

 

The UK is set to start the next phase of its development of offshore wind energy power generation looking to launch the first commercial-scale development of a floating offshore wind farm. Known as Round 5, The Crown Estate will start the leasing process in early 2024.

The industry stands at a crossroads in the UK. After having been an early developer and today having almost half as much operational capacity as the rest of Europe combined, they look to open up floating wind as the next phase of the industry’s development. The Crown Estate which manages which manages the seabed around England, Wales, and Northern Ireland, released further details today, December 7, for the leasing round for three commercial-scale floating wind projects in the Celtic Sea off the coast of South Wales and South West England. 

They highlight that floating wind technology has the potential to open new areas of the seabed for wind power generation. The anchoring technology they highlight will permit wind farms to move to areas of greater depth, further from shore, where wind patterns are stronger and more reliable versus the existing fixed-base turbines. 

"Floating offshore wind is a huge opportunity for Wales and the South West, with the potential to deliver billions of pounds of direct investment whilst bolstering our energy independence and net zero ambitions,” said Graham Stuart, the UK’s Minister of State for Energy Security and Net Zero. “Today's plans will build on the Government’s ambition to deploy up to 5GW of floating offshore wind by 2030.”

The first three wind farms planned for the Celtic Sea will have a combined capacity of up to 4.5 GW and are expected to be the first phase of commercial development in the region. The UK government declared its intention in 2023 to unlock space for up to a further 12GW of capacity in the Celtic Sea. By the 2030s, they predict the Celtic Sea could be providing 16 GW of renewable energy.

The Crown Estate notes that its goal is to support the development of the industry while creating the best value for the nation. They reported that the Round 5 program will adopt further changes to support the industry by enabling upfront investment in important workstreams to de-risk the process for developers. This will include investments in marine surveys to better understand the physical and environmental properties around the locations of the new wind farms. The Crown Estate has also outlined its intention to bring forward a new pilot fund to help accelerate supply chain projects.

The process for Round 5 will begin in early 2024 with pre-qualification questionnaires and an informational session on January 31 for prospective bidders to learn more details of the Round 5 tender. 


South Fork Wind Becomes First Large U.S. Wind Farm to Deliver Power

South Fork Wind Farm
South Fork's first two turbines were installed in November and today marked the delivery of first power (Orsted)

PUBLISHED DEC 6, 2023 2:07 PM BY THE MARITIME EXECUTIVE

 

 

New York’s South Fork Wind marked the delivery of its first power achieving a milestone for the beleaguered industry that is facing well-publicized financial and operational challenges. While smaller in scale at just 12 turbines to generate approximately 130 megawatts, it is still considered to be the first commercial-scale wind farm in the United States.

The project, which is a joint venture between Ørsted and Eversource, is located approximately 35 miles offshore from Montauk, New York on the eastern tip of Long Island. It has completed the installation of its first two turbines, with one operational, and expects to complete the installation of the 12 turbines by early 2024. When fully operational, they expect the wind farm will power about 70,000 homes.

Officials noted that it was nearly eight years in the making to reach this point. The project was first approved by the Long Island Power Authority in 2017 two years after they issued the first request for proposal. The federal site review was completed in 2017 and the project spent between 2018 and 2020 working on its construction and operating plan before gaining final federal approval in January 2022.

With offshore work beginning in 2023, the wind farm marked several key milestones. Boskalis's Bokalift 2, handled the foundation installation with the first steel entering the water in June. The wind farm also has the first U.S.-built offshore wind substation. Weighing 1,500 tons and standing 60 feet, it was built in Texas by Kiewit Offshore Services and after being completed in May was shipped to the site for installation. 

“South Fork Wind is not just a trailblazing project for the state, it’s also one of the foundations of America’s offshore wind energy industry,” said David Hardy, EVP and CEO Americas of the Ørsted Group. 

 

 

The U.S.’s first offshore wind farm was constructed in 2015 to provide power for Block Island, Rhode Island. The five turbines have been providing power in place of diesel generators since 2016 from the wind farm which is also operated by Ørsted. Five years later, Dominion Energy completed the installation of two 12-megawatt turbines in 2020 as a pilot project 27 miles off Virginia Beach.

Last month, the federal Bureau of Ocean Energy Management highlighted that it had approved the sixth large offshore wind farm project in the United States with Empire Wind. Proposed as a joint development between Equinor and BP, the wind farm would be located about 12 nautical miles south of Long Island, N.Y., and about 17 nm east of Long Branch, N.J. Together these projects would have up to 147 wind turbines with a total capacity of 2,076 megawatts of renewable energy.

These projects however are currently in jeopardy. New York regulators rejected a proposal from Equinor and BP, along with another proposal from Ørsted to reprice the power agreements for Empire Wind along with Beacon Wind and Ørsted’s Sunrise Wind.  The developers argued that the financial pressures required an increase in the electric offtake price to make the projects economical and have threatened to walk away from them which would be a major setback to New York’s plans. The state recently issued its next wind solicitation providing a path for these projects to be rebid in early 2024. 

First power from South Fork is also good news for Ørsted which has been one of the most impacted companies by the changing fortunes of the offshore wind sector. The company has walked away from large projects in New Jersey and announced it would be taking a financial write-down of approximately $5 billion due to the financial, supply chain, and development problems in its U.S. wind portfolio.

Despite the setbacks, BOEM contends that it remains on track to complete reviews of at least 16 offshore wind energy project plans by 2025, representing more than 27 gigawatts of clean energy. The Biden administration has called for 30 MW of offshore energy production for the U.S. by 2030.


UAE Makes Second Major UK Wind Farm Deal Expanding Renewable Energy Role

offshore wind farm
Iberdrola will co-invest with the UAE's Masdar in UK and other other wind and renewable energy projects (Iberdrola)

PUBLISHED DEC 5, 2023 8:21 PM BY THE MARITIME EXECUTIVE

 

 

The UAE announced plans for its second large investment in the UK offshore energy sector forming a partnership with Iberdrola which is set to develop one of the largest wind farms in the UK sector. This initiative which is part of a broader cooperation between the UAE’s Masdar and Spain’s Iberdrola follows a similar agreement announced days ago for the UAE to invest with RWE in another of the UK’s largest wind farms and is part of a broader strategy by the UAE to enhance its image by investing in renewable energy projects ranging from Germany to Poland, the USA, Indonesia, Kazakhstan, and elsewhere.

HE Dr Sultan Al Jaber, the UAE Minister of Industry and Advanced Technology and Chairman of Masdar, is also serving as the President of the COP28 conference taking place currently in Dubai. They are seeking to use the conference to highlight the UAE’s emerging role as a global investor and developer in renewable energy projects.

Under the agreement signed today on the sidelines of the COP28 conference, Masdar will acquire up to a 49 percent stake in the East Anglia Three wind farm that Iberdrola is developing. Masdar highlights that it will become a co-developer sharing the risks of the project which is now under construction and expected to be fully commissioned in the fourth quarter of 2026 providing up to 1.4 GW of energy. Through a subsidiary, Iberdrola already has the first phase of the project at the site which is part of the East Anglia Hub macro-complex, which is expected to provide a total of 3.3 GW.

Iberdrola secured a 15-year agreement firm the UK government for the site's third phase project in July 2022. The contract provides for a price of £37.35 per megawatt hour which is half the new UK maximum price in the next round auction of £73 per megawatt hour and illustrates the challenges facing the offshore wind industry. Analysts believe the UAE is taking advantage of the current troubles in the industry to expand its role taking risks but also demonstrating confidence in offshore wind energy.

The final terms of the agreement for the investment in East Anglia Three will be reached by the first quarter of 2024 and part of a larger transaction that will see the two companies work together to jointly invest in future offshore wind and green energy projects in Europe and elsewhere. Masdar last year acquired a stake in Iberdrola’s Baltic Eagle wind farm being built in Germany. They noted that exploration is already underway for additional projects. The two companies anticipate the total value of the investments could reach €15 billion.

Masdar highlights that it has been active in the UK and Europe for more than a decade investing in projects including the London Array and Hywind, which is Scotland’s first floating wind farm. The company, which is jointly owned by Abu Dhabi National Oil Company (ADNOC), Mubadala Investment Company, and Abu Dhabi National Energy Company (TAQA), reports it is targeting a renewable energy portfolio capacity of at least 100 GW by 2030 and an annual green hydrogen production capacity of up to 1 million tonnes.

Iberdrola’s Executive Chairman, Ignacio Galán notes the growing opportunities in offshore wind and renewable energy. He highlighted that this week at COP 28 a total of 118 governments pledged to triple renewable energy capacity by 2030.



Changeable Seas for Offshore Wind in the Northeastern U.S.

South Park Wind installation
Courtesy South Fork Wind

PUBLISHED DEC 7, 2023 4:00 PM BY ROBINSON+COLE LLP

 

Offshore wind (OSW) is a key component of the Biden administration's renewable energy goals, which include the deployment of 30GW of offshore electricity by 2030 and 110GW by 2050. For perspective, the administration claims that 30GW would power over 10 million homes.  The Northeast, with its favorable coastal shelf and prevailing wind conditions, has been at the forefront of offshore wind development in the United States.  While federal and state permitting efforts have advanced on several projects and turbines have started to leave coastal ports for their offshore destinations, other planned installations have stalled recently due to changing economic conditions.  Despite the economic obstacles to meeting the administration’s OSW goals, the Northeast and other coastal states continue to back offshore wind.

Recent Developments in Connecticut and Surrounding States

While economic headwinds have rattled project developers, Northeastern states are investing in OSW by employing partnerships and streamlining permitting to support and facilitate the development of coastal wind energy. They are also looking to the federal government for support.  In a September 13, 2023, letter, six coastal states (Connecticut, Rhode Island, Massachusetts, Maryland, New Jersey, and New York) urged President Biden to deploy additional federal resources to support the OSW industry. The American Clean Power Association (ACP) has stated that it intends to work with the Biden administration to address bottlenecking in the federal permitting process. The ACP also indicated its support for the Reinvesting in Shoreline Economies and Ecosystem (RISEE) Act, which would provide hundreds of millions of dollars to states adjacent to OSW leases.

In Connecticut, specifically, the Department of Economic and Community Development (DECD) recently released its Offshore Wind Strategic Roadmap (Roadmap), outlining the State’s plans, initiatives, and steps to further OSW development. To achieve its lofty goal of 100% zero-carbon electricity by 2040, Connecticut outlined four key pillars:

1) Infrastructure/Real Estate. Build off the progress made with projects like the State Pier Terminal in New London and the Ports of New Haven and Bridgeport. These deep-water ports are crucial to expanding marshaling, operations and maintenance, and other supporting capabilities for OSW development.   

2) Supply Chain. Increase regional capabilities and coordination across the OSW supply chain. The State will rely on its demonstrated expertise in composite materials and metal fabrication capabilities developed through its long history of government contract work.

3) Workforce. To achieve zero-carbon electricity, the DECD acknowledges that it must provide a local labor force to prepare for and connect with OSW-related jobs. To do this, Connecticut has partnered with other New England states to determine how to incorporate early education and workforce development initiatives to secure skilled personnel. 

4) Research and Development. To encourage further research and development, Connecticut has partnered with UCONN, Yale, and investment institutions to promote research activities related to OSW.

To implement its Roadmap, Connecticut has established the Connecticut Wind Collaborative (CWC). The CWC will oversee the implementation of the pillars outlined in the Roadmap. The new non-profit organization will be comprised of OSW leaders from academia and across the government, private, and public sectors. Additional information about the CWC’s structure and authority will be released in the future.

Connecticut has also recently partnered with Massachusetts and Rhode Island to cooperate and coordinate on OSW development. An October 3, 2023, Memorandum of Understanding (MOU) between the three states outlines an approach to soliciting multi-state bids for OSW development that will benefit the states collectively. The MOU’s primary objective is to encourage collaboration between the states in hopes of leveraging buying power and making the development of OSW projects more cost-effective. While the MOU does not require any one state to work with the others on new proposals, it does ensure that each state will benefit equally from multi-state bids for any OSW project proposal, and requires each state to consider whether a bid can result in a multi-state project. MA Governor Maura Healey said the MOU will “amplify the many benefits of offshore wind for all three states, including regional economic development opportunities, healthier communities, lower energy bills and advantages to environmental justice populations and low-income taxpayers.” 

The MOU also encourages good-faith coordination between the states when considering both independent and multi-state OSW projects. When considering a multi-state bid, applicants will be required to designate which states are impacted by the proposed project. Approval of a multi-state proposal may be contingent upon approval from all three participating states. The MOU clearly states that it is not meant to be seen as a legal authority binding the states to enter into contracts or other agreements.

The MOU’s objectives of collaboration and reducing costs for bidders are already being implemented. Connecticut’s recent Request for Proposal (RFP), published on October 27, 2023, provides a pathway to solicit multistate bids. In addition, the Connecticut RFP includes a provision that allows bidders to submit pricing at a rate indexed to the price of “listed macroeconomic factors and commodities” that will be fixed at some date in the future. The indexed pricing approach allows bidders to account for changes that may occur after the bid due date, but before the project reaches final close, by adjusting their proposed price up or down by no more than 15%.  This flexibility is intended to ease the financial hardships many OSW developers are currently facing.   

Financial Hardships

While the coastal New England states continue to solicit proposals for OSW development, several developers have run into commercial roadblocks that have substantially reshaped the economic analysis. Global events such as COVID-19 and the war in Ukraine have caused the scarcity of some materials and the skyrocketing costs of others. According to Building a National Network of Offshore Wind Ports, a publication released by The Business Network for Offshore Wind, there is now an estimated $22.5-$27.2 billion discrepancy between available financing and the financing required to construct the OSW facilities needed to achieve the administration’s OSW goals.

Other pressures driving development costs include the surge in demand for OSW globally, rapid increases in turbine sizes over the last decade, expansion of offshore wind into deeper waters requiring more costly technological solutions, historically-high interest rates and commodity input prices, and competition for construction materials in and outside of the OSW industry. Changing market conditions have had at least some impact on almost every OSW project currently under development. 

In a constantly changing landscape, the current status of OSW projects in the Northeast continues to evolve:

Project NameStateMWDeveloperProject StatusPermitting Status
Vineyard WindMA800AvangridUnder ConstructionReceived BOEM Record Decision
Beacon WindMA1200EquinorPermitting stageEIS review
Revolution WindRI704Orsted/ EversourceUnder ConstructionReceived Final Approval for DOI Construction
Park City WindCT800AvangridStalledStalled
South Fork WindNY132OrstedUnder ConstructionReceived BOEM Record Decision
Sunrise WindNY924OrstedObtaining permitsEIS review
Empire Wind 1NY816EquinorPermitting stageBOEM released final EIS
Empire Wind 2NY1200EquinorPermitting stageBOEM released final EIS
Ocean Wind 1NJ1100OrstedCanceledCanceled
Ocean Wind 2NJ1150OrstedCanceledCanceled
Skipjack WindMD966OrstedConducting SurveysEIS review
Coastal Virginia WindVA2590Dominion EnergyObtaining construction permitsReceived BOEM Record Decision

 

Revolution Wind, set for construction south of Block Island, is one project proceeding intact and is estimated to deliver 400 MW of power to Rhode Island and 304 MW of power to Connecticut. Orsted and its then-partner Eversource locked in project costs prior to the current market instability and recently announced a final investment decision confirming that construction is expected to be completed by 2025.  Eversource, however, is withdrawing from the wind sector, announcing in September that it would be selling its fifty percent interest in its three jointly-owned contracted OSW projects with Orsted: Revolution Wind, Sunrise Wind, and South Fork Wind. Currently, workers at the New London State Pier in Connecticut continue to assemble parts for the South Fork Wind turbines. These turbines can be seen off the coast of Montauk Point as the nation’s first commercial-scale OSW farm takes shape. At present, Revolution Wind and Sunrise Wind are also proceeding as planned.

The offshore wind market has changed, however, and other projects have stalled or been canceled.  Orsted recently ceased development of the Ocean Wind I and II projects in New Jersey and will announce final plans to terminate, postpone, or continue other OSW projects in the United States in 2024.  Also, citing unanticipated economic factors, Avangrid has terminated its power-purchase agreement for Park City Wind, which was expected to supply roughly 14% of Connecticut’s electricity.  The project is expected to be rebid.  

Despite these setbacks, state governments continue to explore OSW development and ways to alleviate some of the economic and logistical hurdles standing in the way of progress.

 

Maersk to Proceed with $500M Investment in Southeast Asia

Maersk containership at berth
Maersk is proceeding with a half-a-billion dollar investment in Southeast Asia (file photo)

PUBLISHED DEC 4, 2023 5:42 PM BY THE MARITIME EXECUTIVE

 

 

Maersk reports it plans to move forward with a more than half-a-billion dollar investment in Asia as part of the execution of its global integrator strategy focusing on an overall logistics solution. The investment, which is expected to span over three years, targets the company’s logistics and services operations as well as its ocean shipping and terminal operations despite the strong financial headwinds the company is currently experiencing.

“Southeast Asia is the fastest growing area in Asia Pacific,” emphasizes Vincent Clerc, CEO of A.P. Møller–Maersk, noting the e-commerce boom, government’s efforts to capitalize on global manufacturing diversification, and rising inter-regional trade spurring sustained growth in the region. “Our investment reflects the commitment to being the global logistics integrator.”

During the third quarter, while reporting a nearly 50 percent decline in quarterly revenues and EBIT income falling from $9.5 billion to just $538 million, the company said it intended to continue to move forward with the investments in its strategy. Clerc however warned investors that with “challenging times ahead,” the company was cutting costs including completing a 10,000-head staffing reduction that was already more than 50 percent completed.

The total investment planned for Southeast Asia will be more than $500 million and will cut across the company’s warehousing and distribution operations as well as air cargo, inland logistics, ocean shipping, and terminal operations.

Maersk reports it will invest in scaling its warehousing and distribution footprint by up to 50 percent across the area to augment its ocean, air, and land capabilities, serving both international and domestic markets and demand. By 2026, Maersk expects to add nearly 480,000 sqm capacity spread across Malaysia, Indonesia, Singapore, and the Philippines creating mega distribution centers that are strategically located.

They highlighted the investments being made at Port of Tanjung Pelepas, located in Malaysia, where it is poised to become a key integrated logistics hub. Furthermore, Maersk is also investing in increasing its landside warehouse capacity at Singapore's Changi Airport, intending to solidify its position as Maersk’s regional air freight hub.

Other investments will include significantly increasing haulage truck capacity in Southeast Asia including a pilot biodiesel-based haulage trucks and the introduction of EV trucks by 2024. In the ocean and terminal segments, Maersk will continue to invest in expanding its infrastructure across the region through APM Terminals. 

Additionally, the company revealed that it is working closely with authorities in the region to explore opportunities in building green fuel infrastructure to support its future green vessel fleet.

Maersk currently has a presence in four markets in Southeast Asia, including Singapore, Malaysia, Indonesia, and the Philippines. 


Maersk Settles Lawsuit Over Ever Given's Suez Canal Shutdown

Ever Given aground
Image courtesy Suez Canal Authority

PUBLISHED DEC 1, 2023 8:40 AM BY THE MARITIME EXECUTIVE

 

Maersk Group has decided to settle a lawsuit over the disruption caused by the grounding of the massive boxship Ever Given, which shut down the Suez Canal for six days in 2021. 

The number-two ocean carrier filed suit in Denmark against unspecified parties in connection with the grounding, and had sought damages of about $45 million. Danish outlet ShippingWatch confirmed Thursday that the lawsuit has ended with an out-of-court settlement. 

The Ever Given went aground in the Suez Canal on March 23, 2021, shortly after she entered the southern entrance. Her length exceeded the canal's width, and with bow and stern firmly wedged in each bank, she blocked the waterway to all marine traffic. 

For the complex salvage operation, the Suez Canal Authority brought in shore-based excavating equipment, cutter suction dredgers and at least 10 tugs. With much effort, the ship was finally refloated on March 29. The event made global headlines and put shipping in the spotlight, providing consumers with a rare direct example of how maritime commerce can affect their daily lives. 

Over the course of the six-day shutdown, up to 400 ships had their voyages disrupted by the shutdown of the canal, including 50 boxships with connections to Maersk.  In response, Maersk sued shipowner Shoei Kisen Kaisha and operator Evergreen at Denmark’s Maritime and Commercial Court for damages from the disruption.

Evergreen denied responsibility for the incident. “As Ever Given is leased by Evergreen under the terms of a time-charter agreement, all expenses for the refloating operation and any liabilities are the responsibility of the vessel’s owner," the firm said in a statement after the suit was filed. 

The case's progress was closely watched in the liner shipping world, as a win for Maersk could provide a blueprint for other affected carriers to file similar claims. On Thursday, Maersk confirmed that it has withdrawn the lawsuit, following news of a settlement agreement. 

Boskalis, owner of salvor SMIT Salvage, filed suit in a London court earlier this year seeking compensation from Shoei Kisen Kaisha for its role in freeing the stranded ship. According to the FT, the estimated value of the Ever Given job was in the range of $25-50 million.

SMIT has continued to work with Shoei Kisen Kaisha: the salvor played a role in the response to the burning car carrier Fremantle Highway, which caught fire off the coast of the Netherlands in July. 

Korea Blames “Unauthorized” Alterations and Maintenance for 2017 Casualty

Bulker Stellar Daisey
Maintenance issues and alterations were blamed for the 2017 loss of Stellar Daisy, a tanker converted to become a bulker (NSRI file photo)

PUBLISHED DEC 5, 2023 4:53 PM BY THE MARITIME EXECUTIVE

 

More than six years after the loss of the converted bulk carrier Stellar Daisy, a South Korean inquiry into the sinking which claimed the lives of 22 crewmembers confirmed the findings blaming maintenance issues while also adding some new details on the contributing factors.

The loss of the Stellar Daisy on March 31, 2017, approximately 2,000 nautical miles from the Port of Montevideo, Uruguay with 24 crew members on board shined light on the then-common practice of converting aging tankers into large bulk carriers. Having begun her life in the 1990s, the Stellar Daisy was a converted very large ore carrier (VLOC) with an overall length of 322 meters (1,056 feet) and 266,141 dwt. She had 10 cargo holds.

The conversion was carried out at Cosco (Zhoushan) Shipyard, and typical of the VLCC-to-VLOC conversions the center cargo tanks were outfitted with the addition of deck hatches to be used as bulk cargo holds. The process required the hull framing to be reinforced and modified with the addition of about 6,000 tonnes of structural steel.

According to a report from Korean news agency Yonhap, the Busan Regional Maritime Safety Tribunal issued a ruling today, December 5, citing “neglect of maintenance by its operator,” as the cause of the Stellar Daisy casualty. Previous investigations reported that cracks had been seen on the vessel and believed it split in two and sunk. The Stellar Daisy was fully loaded carrying 260,000 tons of iron ore at the time of the casualty.

The tribunal, according to the report from Yonhap, reported that it found the vessel’s operator Polaris Shipping had installed an unauthorized wastewater storage device on the bottom of the ship. They concluded that the company did not inspect or strengthen the ship's hull. The shipping company was supposed to conduct repairs to safely load cargo on the Stellar Daisy, but the tribunal ruled that Polaris let the ship set sail without reinforcement.

Polaris’ maintenance and operations have previously been cited in the investigations into the casualty. The Marshall Islands in 2020 issued a report from its investigation citing structural damage that was likely due to a combination of factors, including the strength of the ship’s structure being compromised over time due to material fatigue, corrosion, unidentified structural defects, and multi-port loading, as well as the weather conditions the vessel encountered in the days preceding the casualty.

In 2020, Polaris Shipping and its CEO Kim Wan-Jung were found guilty of failing to report defects with the vessel and he was sentenced to six months in jail. Polaris in 2021 scrapped the last of its converted ships, but last year South Korean prosecutors filed a new round of charges against the CEO of the company and six employees at the urging of the families of the lost crewmembers.

“The tribunal's decision is expected to affect civil and criminal proceedings related to the sinking,” writes Yonhap. They said that the trial is still proceeding on the charges brought in 2022 against the six individuals and other cases are also ongoing related to the casualty.

The Korea Register of Shipping was also investigated but the tribunal acquitted the class society. Yonhap reports that the decision said it was “difficult to recognize the causal relationship between the ship inspection agency and the sinking of the Stellar Daisy.”

The loss of the Stellar Daisy brought renewed attention and criticism to the conversion of old tankers to bulkers. The industry has abandoned the practice and in 2020 Brazilian iron ore mining company Vale announced that it would begin phasing out all the converted ships from its operations. BIMCO commented that the high cost of maintenance was dooming the class of ships making them uneconomical to operate.