The Iowa Utilities Board recently did not approve the applications of Interstate Power and Light Company and MidAmerican Energy Company to transfer control of their electric transmission assets to an independent company (TRANSLink).=
The IUB found that more time was needed to study concepts presented in the case. Questions regarding regulatory jurisdiction persist, and the position of the Federal Energy Regulatory Commission (FERC) on the formation of regional transmission organizations (RTOs) remains unsettled. The IUB encourages both utilities to file new applications as the process of regionalizing transmission service evolves.
“This was a tough decision,” said IUB Chair Diane Munns. “The utility companies worked very hard to put these reorganization proposals together. We commend them for that. Timing was key to this decision as more information is needed and we were facing a statutory deadline. It is still very early in this whole process, which is why we will encourage the utility companies to refile.”
More than two years ago, the FERC ordered utilities to join RTOs, but did not require a particular mode of participation. TRANSLink represents the applicantsÂ’ proposed means for meeting the FERC transmission requirements, but the FERC stance on the RTO process has changed since the TRANSLink proposal was filed with the IUB.
The IUB decided on June 4 that evidence in the case did not adequately demonstrate optimal cost-effective RTO participation, although it did acknowledge the proposals could possibly provide customer benefits such as lower wholesale electricity costs.
The IUB determined that the proposed TRANSLink model might limit its authority to review the transmission costs of Interstate and MidAmerican, which could adversely affect rated paid by customers. The IUB has concerns about InterstateÂ’s proposal to contribute its transmission assets and the risk this might impose on Iowa customers. Board members felt this situation warranted further investigation.
Reorganization applications were filed by Interstate on Nov. 26, 2002, and by MidAmerican on Dec. 18, 2002. Interstate proposed to transfer ownership of its transmission assets, while MidAmerican sought transfer of control through a lease agreement. The board consolidated the cases. Intervenors in the case were the Office Consumer Advocate, TRANSLink, the Iowa Consumers Coalition, Deere and Company, Resale Power Group of Iowa, Central Iowa Power Cooperative and Com Bell Power Cooperative.
“This was a tough decision,” said IUB Chair Diane Munns. “The utility companies worked very hard to put these reorganization proposals together. We commend them for that. Timing was key to this decision as more information is needed and we were facing a statutory deadline. It is still very early in this whole process, which is why we will encourage the utility companies to refile.”
More than two years ago, the FERC ordered utilities to join RTOs, but did not require a particular mode of participation. TRANSLink represents the applicantsÂ’ proposed means for meeting the FERC transmission requirements, but the FERC stance on the RTO process has changed since the TRANSLink proposal was filed with the IUB.
The IUB decided on June 4 that evidence in the case did not adequately demonstrate optimal cost-effective RTO participation, although it did acknowledge the proposals could possibly provide customer benefits such as lower wholesale electricity costs.
The IUB determined that the proposed TRANSLink model might limit its authority to review the transmission costs of Interstate and MidAmerican, which could adversely affect rated paid by customers. The IUB has concerns about InterstateÂ’s proposal to contribute its transmission assets and the risk this might impose on Iowa customers. Board members felt this situation warranted further investigation.
Reorganization applications were filed by Interstate on Nov. 26, 2002, and by MidAmerican on Dec. 18, 2002. Interstate proposed to transfer ownership of its transmission assets, while MidAmerican sought transfer of control through a lease agreement. The board consolidated the cases. Intervenors in the case were the Office Consumer Advocate, TRANSLink, the Iowa Consumers Coalition, Deere and Company, Resale Power Group of Iowa, Central Iowa Power Cooperative and Com Bell Power Cooperative.
ERCOT Winter Capacity RFP seeks up to 3,000 MW through generation and demand response to bolster Texas grid reliability during peak load, leveraging Reliability Must-Run, incentive factors, and EEA risk mitigation for the 2023-24 season.
Key Points
An ERCOT initiative to procure 3,000 MW of generation and demand response to reduce EEA risk and improve reliability.
✅ Targets 3,000 MW from generation and demand response
✅ Uses RMR-style contracts with flexible incentive factors
✅ Aims to lower EEA probability below 10% this winter
The Electric Reliability Council of Texas (ERCOT) issued a request for proposals to stakeholders to procure up to 3,000 MW of generation or demand response capacity to meet load and reserve requirements during the winter 2023-24 peak load season (Dec. 1, 2023, through Feb. 29, 2024), amid ongoing Texas power grid challenges across the region.
ERCOT cited “several factors, including significant peak load growth since last winter, recent and proposed retirements of dispatchable Generation Resources, and recent extreme winter weather events, including Winter Storm Elliott in December 2022, Winter Storm Uri in February 2021, and the 2018 and 2011 winter storms, each of which resulted in abnormally high demand during winter weather.” It now seeks additional capacity under its “authority to prevent an anticipated Emergency Condition,” reflecting nationwide blackout risks identified by grid experts.
In its notice regarding the RFP, ERCOT identified a number of mothballed and recently decommissioned generation resources that may be eligible to offer capacity under the RFP. It further stated that offers must comport with the format of its “Reliability Must-Run” agreement but could include a proposed “Incentive Factor” that reflects the revenues the unit owners determine would be necessary to bring the unit back to operation. It added that the Incentive Factor is not necessarily limited to 10%. Providers of eligible demand response can submit offers based on similar principles that are not necessarily constrained by cost. The notice identifies potential acceptable sources of demand response, describes certain parameters for the kinds of demand response that are permitted to respond to the RFP, and outlines the time periods during which ERCOT must be able to deploy the demand response resources to improve electricity reliability across the system.
To meet the Dec. 1, 2023, service start date, ERCOT developed an aggressive timeline to solicit and evaluate proposals through the RFP. Responses to the RFP are due Nov. 6, 2023. ERCOT’s schedule provides that it will notify market participants that obtain awards on Nov. 23, 2023. Expect contracts to be executed by Nov. 30, 2023.
Unlike Regional Transmission Organizations in the Northeastern United States, ERCOT does not have a capacity market. Instead, ERCOT relies on a high price cap of $5,000 per MWh for its energy market (decreased from the $9,000 per MWh cap in effect during Winter Storm Uri) and an Operating Reserve Demand Curve adder that pays additional funds to generators supplying power and ancillary services, an area recently scrutinized for improper payments when supply conditions are tight. In the wake of Winter Storm Uri, some calls were made to have ERCOT adopt a capacity market for reliability reasons, and a number of legal battles continue to play out in the wake of Winter Storm Uri. (See recent McGuireWoods legal alert “Winter Storm Uri Power Dispute Reaches the Supreme Court of Texas.”) Though a capacity market was not adopted, the Texas Legislature approved a $7.2 billion loan program, widely described as an electricity market bailout for generators, to build up to 10,000 MW of dispatchable generation. The legislature also approved a version of the Public Utility Commission of Texas’ proposal to establish a “Performance Credit Mechanism,” but with a cost cap of $1 billion.
The loss of life and economic impacts of Winter Storm Uri in 2021, along with the energy crunches and calls for conservation this past summer, are driving changes to ERCOT’s “energy-only” market, including electricity market reforms under consideration. Texas policymakers are providing multiple financial incentives to promote investment in dispatchable on-demand generation, and voters will consider funding to modernize generation measures this year to make the Texas grid more reliable and able to deal with power demand from a growing economy and increased demand for electricity driven by weather. In the meantime, ERCOT’s plan to procure 3,000 MW through this RFP process is a stopgap measure intended to bolster reliability for the upcoming winter season and lower the probability of load shed in the event of severe winter weather.
Second-Largest UK Grid Operator advancing electricity networks modernization, smart grid deployment, renewable integration, and resilient distribution, leveraging acquisitions, data analytics, and infrastructure upgrades to boost reliability, efficiency, and service quality across regions and energy sector.
Key Points
A growing electricity networks operator advancing smart grids, renewable integration, and reliability.
✅ Expanded via acquisitions and regional growth
✅ Investing in smart grid, data analytics, automation
In a significant shift within the UK’s energy sector, a major company has recently ascended to become the second-largest electricity networks operator in the country. This milestone marks a pivotal moment in the industry, reflecting ongoing changes and competitive dynamics in the energy landscape, such as the shift toward an independent system operator in Great Britain. The company's ascent underscores its growing influence and its role in shaping the future of energy distribution across the UK.
The company, whose identity is a result of strategic acquisitions and operational expansions, now holds a substantial position within the electricity networks sector. This new ranking is the result of a series of investments and strategic moves aimed at strengthening its network capabilities and, amid efforts to fast-track grid connections across the UK, expanding its geographical reach. By achieving this status, the company is set to play a crucial role in managing and maintaining the electricity infrastructure that serves millions of households and businesses across the UK.
The rise to the second-largest position follows a period of significant growth and transformation for the company. Recent acquisitions have enabled it to enhance its network infrastructure, integrate advanced technologies, adopting a more digital grid approach, and improve service delivery. These developments come at a time when the UK is undergoing a significant transition in its energy sector, driven by the need for modernization, sustainability, and resilience in response to evolving energy demands.
One of the key factors contributing to the company's new status is its focus on upgrading and expanding its electricity networks. Investments in modernizing infrastructure, such as the commissioning of a 2GW substation to boost capacity, incorporating smart grid technologies, and enhancing operational efficiencies have been central to its strategy. By leveraging cutting-edge technology and data analytics, the company is able to optimize network performance, reduce outages, and improve overall reliability.
The company’s expansion into new regions has also played a crucial role in its growth. By extending its network coverage, including assets like the London electricity tunnel that enhance supply routes, the company has been able to provide electricity to a larger customer base, increasing its market share and influence in the sector. This expansion not only enhances its position as a major player in the industry but also supports the broader goal of ensuring reliable and efficient electricity distribution across the UK.
The shift to becoming the second-largest operator also reflects broader trends in the UK energy sector. The industry is experiencing a period of consolidation and transformation, driven by regulatory changes, technological advancements, and the push towards decarbonization, with similar momentum seen in British Columbia's clean energy shift that underscores global trends. The company’s ascent is indicative of these broader dynamics, as firms adapt to new challenges and opportunities in a rapidly evolving market.
In addition to operational and strategic advancements, the company’s rise is aligned with the UK’s broader energy goals. The government has set ambitious targets for reducing carbon emissions and increasing the use of renewable energy sources. As a major electricity networks operator, the company is positioned to support these goals by integrating renewable energy into the grid, including projects like the Scotland-to-England subsea link that carry remote generation, enhancing energy efficiency, and contributing to the transition towards a low-carbon energy system.
The company’s new status also brings with it a range of responsibilities and opportunities. As one of the largest operators in the sector, it will have a significant role in shaping the future of electricity distribution in the UK. This includes addressing challenges such as grid reliability, energy security, and the integration of emerging technologies. The company’s ability to manage these responsibilities effectively will be crucial in ensuring that it continues to deliver value to customers and stakeholders.
The transition to becoming the second-largest operator is not without its challenges. The company will need to navigate a complex regulatory environment, manage stakeholder expectations, and address any operational issues that may arise from its expanded network. Additionally, the competitive nature of the energy sector means that the company will need to continuously innovate and adapt to maintain its position and drive further growth.
In summary, the company’s achievement of becoming the second-largest electricity networks operator in the UK represents a significant milestone in the energy sector. Through strategic acquisitions, infrastructure investments, and operational enhancements, the company has strengthened its position and expanded its reach. This development highlights the evolving landscape of the UK energy sector and underscores the importance of modernization and innovation in meeting the country’s energy needs. As the company moves forward, it will play a key role in shaping the future of electricity distribution and supporting the UK’s energy transition goals.
Meaford Pumped Storage Project aims to balance the grid with hydro-electric generation, a hilltop reservoir, and transmission lines near Georgian Bay, pending environmental assessment, permitting, and federal review of impacts on fish and drinking water.
Key Points
TC Energy proposal to pump water uphill off-peak and generate 1,000 MW at peak, pending studies and approvals.
✅ Balances grid by storing off-peak energy and generating at peak.
✅ Environmental studies and federal review underway before approvals.
Plans for a $3.3 billion hydro-electric project in Meaford are still in the early study stages, but some residents have concerns about what it might mean for the environment, as past Site C stability issues have illustrated for large hydro projects.
A one-year permit was granted for TC Energy Corporation (TC Energy) to begin studies on the proposed location back in May, and cross-border projects like the New England Clean Power Link require federal permits as well to proceed. Local municipalities were informed of the project in June.
TC Energy is proposing to have a pumped storage project at the 4th Canadian Division Training (4CDTC) Meaford property, which is on federal lands.
A letter sent to local municipalities explains that the plan is to balance supply and demand on the electrical grid by pumping water uphill during off-peak hours. It would then release the water back into Georgian Bay during peak periods, generating up to 1,000 megawatts of electricity.
The project is expected to create 800 jobs over four years of construction, in addition to long-term operational positions.
According to the company's website, the proposed pump station would require a large reservoir on the military base, a generating station, transmission lines infrastructure, and a break wall 850 metres from shore.
Some residents fear the project will threaten the bay and the fish, echoing Site C dam concerns shared with northerners, and the region's drinking water.
Meaford's mayor says the town has no jurisdiction on federal lands, but that a list of concerns has been forwarded to the company, while Ontario First Nations have urged government action on urgent transmission needs elsewhere.
TC Energy will tackle preliminary engineering and environmental studies to determine the feasibility of the proposed location, which could take up to two years.
Once the assessments are done, they need to be presented to the government for further review and approval, as seen when Ottawa's Site C stance left work paused pending a treaty rights challenge.
TC Energy's website states that the company anticipates construction to begin in 2022 if it gets all the go-ahead, with the plant to begin operations four years later.
Input from residents is being collected until April 2020, similar to when the National Energy Board heard oral traditional evidence on the Manitoba-Minnesota transmission line.
25% Tariff on Canadian Imports threatens New York energy markets, disrupting hydroelectric power and natural gas supply chains, raising electricity prices, increasing gas costs, and intensifying trade tensions, policy uncertainty, and cross-border logistics risks.
Key Points
A U.S. policy imposing 25% duties on Canadian goods, risking higher New York electricity and natural gas costs.
✅ Hydroelectric and gas imports face costlier cross-border flows
✅ Higher utility bills for NY households and businesses
✅ Supply chain volatility and policy uncertainty increase
President Donald Trump announced the imposition of a 25% tariff on all imports from Canada, citing concerns over drug trafficking and illegal immigration. This decision has raised significant concerns among experts and residents in New York, who warn that the tariff could lead to increased electricity and gas prices in the state.
Impact on New York's Energy Sector
New York relies heavily on energy imports from Canada, particularly electricity and natural gas. Canada is a major supplier of hydroelectric power to the northeastern United States, including New York, with its electricity exports at risk amid trade tensions. The imposition of a 25% tariff on Canadian goods could disrupt this supply chain, leading to higher energy costs for consumers and businesses in New York. Justin Wilcox, an energy analyst, stated, "If the tariff is implemented, it could lead to increased costs for electricity and gas, affecting both consumers and businesses."
Potential Economic Consequences
The increased energy costs could have broader economic implications for New York, and some experts advise against cutting Quebec's exports to avoid exacerbating market volatility. Higher electricity and gas prices may lead to increased operational costs for businesses, potentially resulting in higher prices for goods and services, while tariff threats have boosted support for Canadian energy projects that could reshape regional supply. This could exacerbate the cost-of-living challenges faced by residents and strain the state's economy.
Political and Diplomatic Reactions
The tariff has also sparked political and diplomatic reactions, including threats to cut U.S. electricity exports from Ontario that raised tensions. New York Governor Kathy Hochul expressed concern over the potential economic impact, stating, "We are closely monitoring the situation and are prepared to take necessary actions to protect New York's economy." Additionally, Canadian officials have expressed their disapproval of the tariff, and Ontario Premier Doug Ford's Washington meeting underscored ongoing discussions, emphasizing the importance of the trade relationship between the two countries.
Historical Context
This development is part of a broader pattern of trade tensions between the United States and its neighbors. In 2018, the U.S. imposed tariffs on Canadian steel and aluminum, leading to retaliatory measures from Canada. The current situation underscores the ongoing challenges in international trade relations, where a recent tariff threat delayed Quebec's green energy bill and highlighted the potential domestic impacts of such policies.
The imposition of a 25% tariff on Canadian imports by President Trump has raised significant concerns in New York regarding potential increases in electricity and gas prices. Experts warn that this could lead to higher costs for consumers and businesses, with broader economic implications for the state. As the situation develops, it will be crucial to monitor the responses from both state and federal officials, as well as how Canadians support tariffs on energy and minerals may influence policy, and the potential for diplomatic negotiations to address these trade tensions.
Boeing 787 More-Electric Architecture replaces pneumatics with bleedless pressurization, VFSG starter-generators, electric brakes, and heated wing anti-ice, leveraging APU, RAT, batteries, and airport ground power for efficient, redundant electrical power distribution.
Key Points
An integrated, bleedless electrical system powering start, pressurization, brakes, and anti-ice via VFSGs, APU and RAT.
✅ VFSGs start engines, then generate 235Vac variable-frequency power
✅ Bleedless pressurization, electric anti-ice improve fuel efficiency
✅ Electric brakes cut hydraulic weight and simplify maintenance
The 787 Dreamliner is different to most commercial aircraft flying the skies today. On the surface it may seem pretty similar to the likes of the 777 and A350, but get under the skin and it’s a whole different aircraft.
When Boeing designed the 787, in order to make it as fuel efficient as possible, it had to completely shake up the way some of the normal aircraft systems operated. Traditionally, systems such as the pressurization, engine start and wing anti-ice were powered by pneumatics. The wheel brakes were powered by the hydraulics. These essential systems required a lot of physical architecture and with that comes weight and maintenance. This got engineers thinking.
What if the brakes didn’t need the hydraulics? What if the engines could be started without the pneumatic system? What if the pressurisation system didn’t need bleed air from the engines? Imagine if all these systems could be powered electrically… so that’s what they did.
Power sources
The 787 uses a lot of electricity. Therefore, to keep up with the demand, it has a number of sources of power, much as grid operators track supply on the GB energy dashboard to balance loads. Depending on whether the aircraft is on the ground with its engines off or in the air with both engines running, different combinations of the power sources are used.
Engine starter/generators
The main source of power comes from four 235Vac variable frequency engine starter/generators (VFSGs). There are two of these in each engine. These function as electrically powered starter motors for the engine start, and once the engine is running, then act as engine driven generators.
The generators in the left engine are designated as L1 and L2, the two in the right engine are R1 and R2. They are connected to their respective engine gearbox to generate electrical power directly proportional to the engine speed. With the engines running, the generators provide electrical power to all the aircraft systems.
APU starter/generators
In the tail of most commercial aircraft sits a small engine, the Auxiliary Power Unit (APU). While this does not provide any power for aircraft propulsion, it does provide electrics for when the engines are not running.
The APU of the 787 has the same generators as each of the engines — two 235Vac VFSGs, designated L and R. They act as starter motors to get the APU going and once running, then act as generators. The power generated is once again directly proportional to the APU speed.
The APU not only provides power to the aircraft on the ground when the engines are switched off, but it can also provide power in flight should there be a problem with one of the engine generators.
Battery power
The aircraft has one main battery and one APU battery. The latter is quite basic, providing power to start the APU and for some of the external aircraft lighting.
The main battery is there to power the aircraft up when everything has been switched off and also in cases of extreme electrical failure in flight, and in the grid context, alternatives such as gravity power storage are being explored for long-duration resilience. It provides power to start the APU, acts as a back-up for the brakes and also feeds the captain’s flight instruments until the Ram Air Turbine deploys.
Ram air turbine (RAT) generator
When you need this, you’re really not having a great day. The RAT is a small propeller which automatically drops out of the underside of the aircraft in the event of a double engine failure (or when all three hydraulics system pressures are low). It can also be deployed manually by pressing a switch in the flight deck.
Once deployed into the airflow, the RAT spins up and turns the RAT generator. This provides enough electrical power to operate the captain’s flight instruments and other essentials items for communication, navigation and flight controls.
External power
Using the APU on the ground for electrics is fine, but they do tend to be quite noisy. Not great for airports wishing to keep their noise footprint down. To enable aircraft to be powered without the APU, most big airports will have a ground power system drawing from national grids, including output from facilities such as Barakah Unit 1 as part of the mix. Large cables from the airport power supply connect 115Vac to the aircraft and allow pilots to shut down the APU. This not only keeps the noise down but also saves on the fuel which the APU would use.
The 787 has three external power inputs — two at the front and one at the rear. The forward system is used to power systems required for ground operations such as lighting, cargo door operation and some cabin systems. If only one forward power source is connected, only very limited functions will be available.
The aft external power is only used when the ground power is required for engine start.
Circuit breakers
Most flight decks you visit will have the back wall covered in circuit breakers — CBs. If there is a problem with a system, the circuit breaker may “pop” to preserve the aircraft electrical system. If a particular system is not working, part of the engineers procedure may require them to pull and “collar” a CB — placing a small ring around the CB to stop it from being pushed back in. However, on the 787 there are no physical circuit breakers. You’ve guessed it, they’re electric.
Within the Multi Function Display screen is the Circuit Breaker Indication and Control (CBIC). From here, engineers and pilots are able to access all the “CBs” which would normally be on the back wall of the flight deck. If an operational procedure requires it, engineers are able to electrically pull and collar a CB giving the same result as a conventional CB.
Not only does this mean that the there are no physical CBs which may need replacing, it also creates space behind the flight deck which can be utilised for the galley area and cabin.
A normal flight
While it’s useful to have all these systems, they are never all used at the same time, and, as the power sector’s COVID-19 mitigation strategies showed, resilience planning matters across operations. Depending on the stage of the flight, different power sources will be used, sometimes in conjunction with others, to supply the required power.
On the ground
When we arrive at the aircraft, more often than not the aircraft is plugged into the external power with the APU off. Electricity is the blood of the 787 and it doesn’t like to be without a good supply constantly pumping through its system, and, as seen in NYC electric rhythms during COVID-19, demand patterns can shift quickly. Ground staff will connect two forward external power sources, as this enables us to operate the maximum number of systems as we prepare the aircraft for departure.
Whilst connected to the external source, there is not enough power to run the air conditioning system. As a result, whilst the APU is off, air conditioning is provided by Preconditioned Air (PCA) units on the ground. These connect to the aircraft by a pipe and pump cool air into the cabin to keep the temperature at a comfortable level.
APU start
As we near departure time, we need to start making some changes to the configuration of the electrical system. Before we can push back , the external power needs to be disconnected — the airports don’t take too kindly to us taking their cables with us — and since that supply ultimately comes from the grid, projects like the Bruce Power upgrade increase available capacity during peaks, but we need to generate our own power before we start the engines so to do this, we use the APU.
The APU, like any engine, takes a little time to start up, around 90 seconds or so. If you remember from before, the external power only supplies 115Vac whereas the two VFSGs in the APU each provide 235Vac. As a result, as soon as the APU is running, it automatically takes over the running of the electrical systems. The ground staff are then clear to disconnect the ground power.
If you read my article on how the 787 is pressurised, you’ll know that it’s powered by the electrical system. As soon as the APU is supplying the electricity, there is enough power to run the aircraft air conditioning. The PCA can then be removed.
Engine start
Once all doors and hatches are closed, external cables and pipes have been removed and the APU is running, we’re ready to push back from the gate and start our engines. Both engines are normally started at the same time, unless the outside air temperature is below 5°C.
On other aircraft types, the engines require high pressure air from the APU to turn the starter in the engine. This requires a lot of power from the APU and is also quite noisy. On the 787, the engine start is entirely electrical.
Power is drawn from the APU and feeds the VFSGs in the engines. If you remember from earlier, these fist act as starter motors. The starter motor starts the turn the turbines in the middle of the engine. These in turn start to turn the forward stages of the engine. Once there is enough airflow through the engine, and the fuel is igniting, there is enough energy to continue running itself.
After start
Once the engine is running, the VFSGs stop acting as starter motors and revert to acting as generators. As these generators are the preferred power source, they automatically take over the running of the electrical systems from the APU, which can then be switched off. The aircraft is now in the desired configuration for flight, with the 4 VFSGs in both engines providing all the power the aircraft needs.
As the aircraft moves away towards the runway, another electrically powered system is used — the brakes. On other aircraft types, the brakes are powered by the hydraulics system. This requires extra pipe work and the associated weight that goes with that. Hydraulically powered brake units can also be time consuming to replace.
By having electric brakes, the 787 is able to reduce the weight of the hydraulics system and it also makes it easier to change brake units. “Plug in and play” brakes are far quicker to change, keeping maintenance costs down and reducing flight delays.
In-flight
Another system which is powered electrically on the 787 is the anti-ice system. As aircraft fly though clouds in cold temperatures, ice can build up along the leading edge of the wing. As this reduces the efficiency of the the wing, we need to get rid of this.
Other aircraft types use hot air from the engines to melt it. On the 787, we have electrically powered pads along the leading edge which heat up to melt the ice.
Not only does this keep more power in the engines, but it also reduces the drag created as the hot air leaves the structure of the wing. A double win for fuel savings.
Once on the ground at the destination, it’s time to start thinking about the electrical configuration again. As we make our way to the gate, we start the APU in preparation for the engine shut down. However, because the engine generators have a high priority than the APU generators, the APU does not automatically take over. Instead, an indication on the EICAS shows APU RUNNING, to inform us that the APU is ready to take the electrical load.
Shutdown
With the park brake set, it’s time to shut the engines down. A final check that the APU is indeed running is made before moving the engine control switches to shut off. Plunging the cabin into darkness isn’t a smooth move. As the engines are shut down, the APU automatically takes over the power supply for the aircraft. Once the ground staff have connected the external power, we then have the option to also shut down the APU.
However, before doing this, we consider the cabin environment. If there is no PCA available and it’s hot outside, without the APU the cabin temperature will rise pretty quickly. In situations like this we’ll wait until all the passengers are off the aircraft until we shut down the APU.
Once on external power, the full flight cycle is complete. The aircraft can now be cleaned and catered, ready for the next crew to take over.
Bottom line
Electricity is a fundamental part of operating the 787. Even when there are no passengers on board, some power is required to keep the systems running, ready for the arrival of the next crew. As we prepare the aircraft for departure and start the engines, various methods of powering the aircraft are used.
The aircraft has six electrical generators, of which only four are used in normal flights. Should one fail, there are back-ups available. Should these back-ups fail, there are back-ups for the back-ups in the form of the battery. Should this back-up fail, there is yet another layer of contingency in the form of the RAT. A highly unlikely event.
The 787 was built around improving efficiency and lowering carbon emissions whilst ensuring unrivalled levels safety, and, in the wider energy landscape, perspectives like nuclear beyond electricity highlight complementary paths to decarbonization — a mission it’s able to achieve on hundreds of flights every single day.
Gulf Power renewable energy contract underscores a Florida PSC-approved power purchase from Bay County's municipal solid waste plant, delivering 13.65 MW at a fixed price, boosting fuel diversity, lowering landfill waste, and saving customers money.
Key Points
A fixed-price PPA for 13.65 MW from Bay County's waste-to-energy plant, approved by Florida PSC to cut costs.
✅ Fixed-price purchase; pay only for energy produced.
✅ 13.65 MW from Bay County waste-to-energy facility.
✅ Cuts landfill waste and natural gas dependency.
The Florida Public Service Commission (PSC) approved Tuesday a contract under which Gulf Power Company will purchase all the electricity generated by the Bay County Resource Recovery Facility, a municipal solid waste plant, similar to SaskPower-Manitoba Hydro deal structures seen elsewhere, over the next six years.
“Gulf’s renewable energy purchase promotes Florida’s fuel diversity, further reducing our dependency on natural gas,” PSC Chairperson Julie Brown said. “This renewable energy option also reduces landfill waste, saves customers money, and serves the public interest.”
The contract provides for Gulf to acquire the Panama City facility’s 13.65 megawatts of renewable generation for its customers beginning in July 2017. Gulf will pay a fixed price, aligned with approaches in Alberta's clean electricity RFP programs, and only pays for the energy produced. The contract is expected to save approximately $250,000 and provides security for customers, a contrast to overruns at the Kemper power plant project, because if the plant does not supply energy, Gulf does not have to provide payment.
This contract is the third renewable energy contract between Gulf and Bay County, at a time when the Southern California plant closures may be postponed, continuing agreements approved in 2008 and 2014. In making the decision, the PSC considered Gulf’s need for power and developments such as the Turkey Point license renewal process, as well as the contract’s cost-effectiveness, payment provisions, and performance guarantees, as required by rule.
Whether you would prefer Live Online or In-Person
instruction, our electrical training courses can be
tailored to meet your company's specific requirements
and delivered to your employees in one location or at
various locations.
