Convention Center to go solar

By Knoxville News Sentinel


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The Knoxville Convention Center is going green.

The downtown facility will be installing the first of two solar panel systems on its roof to generate renewable energy for the area. An inverter power pack and chiller for the 30 kilowatt solar panel system will be lowered by helicopter onto the roof.

Convention Center spokesman Jason Bourgoyne said the solar power system will be tied into the TVA-KUB power network and also will meet part of the Convention Center's electricity needs.

The building, which cost $93 million to construct, houses a 30,000-square-foot ballroom that can seat 1,900 people, 120,000 square feet of exhibit space, 13 meeting rooms and a 460-seat lecture hall. It opened in 2002.

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Ontario sending 200 workers to help restore power in Florida

Ontario Utilities Hurricane Irma Aid mobilizes Hydro One and Toronto Hydro crews to Tampa Bay, Florida, restoring power outages with bucket trucks, lineworkers, and mutual aid alongside Florida Power & Light after catastrophic damage.

 

Key Points

Mutual aid sending Hydro One and Toronto Hydro crews to Florida to restore power after Hurricane Irma.

✅ 205 workers, 52 bucket trucks, 30 support vehicles deployed

✅ Crews assist Tampa Bay under FPL mutual aid agreements

✅ Weeks-long restoration projected after catastrophic outages

 

Hurricane Irma has left nearly 7 million homes in the southern United States without power and two Ontario hydro utility companies are sending teams to help out as part of Canadian power crews responding to the disaster.

Toronto Hydro is sending 30 staffers to aid in the restoration efforts in Tampa Bay while Hydro One said Sunday night that it would send 175 employees after receiving a request from Florida Power and Light.

“I've been on other storms down in the states and they are pretty happy to see you especially when they find out you're from Canada,” Dean Edwards, one of the Hydro One employees heading to Florida, told CTV Toronto.

Most of the employees are expected to cross the border on Monday afternoon and arrive Wednesday.

Among the crews, Hydro One says it will send 150 lines and forestry staff, as well as 25 supporting resources, including mechanics, to help. Crews will bring 52 bucket trucks to Florida, as well as 30 other vehicles, reflecting their Ontario storm restoration experience with large-scale deployments, and pieces of equipment to transport and replace poles.

Hurricane Irma has claimed at least 45 lives in the Caribbean and United States thus far. Officials estimate that restoring power to Florida will take weeks to bring power back online.

“I’m sure a lot of people wish they could go down and help, fortunately our job is geared towards that so we're going to go down there to do our best and represent Canada,” said Blair Clarke, who’s making his first trip over the border.

Hydro One has reciprocal arrangements with other North American utilities to help with significant power outages, and its employees have provided COVID-19 support in Ontario as part of broader emergency efforts. All the costs are covered by the utility receiving the help.

In the past, the utility has sent crews to Massachusetts, Michigan, Florida, Ohio, Vermont, Washington, DC, and the Carolinas, while Sudbury Hydro crews have worked to reconnect service after storms at home as well. In 2012, 225 Hydro One employees travelled to Long Island, N.Y., to help out with Hurricane Sandy.

“This is what our guys and gals do,” Natalie Poole-Moffat, vice president of Corporate Affairs for Hydro One, told CP24. “They’re fabulous at it and we’re really proud of the work they do.”

 

 

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Tens of Thousands Left Without Power as 'Bomb Cyclone' Strikes B.C. Coast

British Columbia Bomb Cyclone disrupts coastal travel with severe wind gusts, heavy rainfall, widespread power outages, ferry cancellations, flooding, and landslides across Vancouver Island, straining emergency services and transport networks during the early holiday season.

 

Key Points

A rapidly intensifying storm hitting B.C.'s coast, causing damaging winds, heavy rain, power outages, and ferry delays.

✅ Wind gusts over 100 km/h and well above normal rainfall

✅ Power outages, flooded roads, and downed trees across the coast

✅ Ferry cancellations isolating communities and delaying supplies

 

A powerful storm, dubbed a "bomb cyclone," recently struck the British Columbia coast, wreaking havoc across the region. This intense weather system led to widespread disruptions, including power outages affecting tens of thousands of residents and the cancellation of ferry services, crucial for travel between coastal communities. The bomb cyclone is characterized by a rapid drop in pressure, resulting in extremely strong winds and heavy rainfall. These conditions caused significant damage, particularly along the coast and on Vancouver Island, where flooding and landslides led to fallen trees blocking roads, further complicating recovery efforts.

The storm's ferocity was especially felt in coastal areas, where wind gusts reached over 100 km/h, and rainfall totals were well above normal. The Vancouver region, already susceptible to storms during the winter months, faced dangerous conditions as power lines were downed, and transportation networks struggled to stay operational. Emergency services were stretched thin, responding to multiple weather-related incidents, including fallen trees, damaged infrastructure, and local flooding.

The ferry cancellations further isolated communities, especially those dependent on these services for essential supplies and travel. With many ferry routes out of service, residents had to rely on alternative transportation methods, which were often limited. The storm's timing, close to the start of the holiday season, also created additional challenges for those trying to make travel arrangements for family visits and other festive activities.

As cleanup efforts got underway, authorities warned that recovery would take time, particularly due to the volume of downed trees and debris. Crews worked to restore power and clear roads, while local governments urged people to stay indoors and avoid unnecessary travel, and BC Hydro's winter payment plan provided billing relief during outages. For those without power, the storm brought cold temperatures, and record electricity demand in 2021 showed how cold snaps strain the grid, making it crucial for families to find warmth and supplies.

In the aftermath of the bomb cyclone, experts highlighted the increasing frequency of such extreme weather events, driven in part by climate change and prolonged drought across the province. With the potential for more intense storms in the future, the region must be better prepared for these rapid weather shifts. Authorities are now focused on bolstering infrastructure to withstand such events, as all-time high demand has strained the grid recently, and improving early warning systems to give communities more time to prepare.

In the coming weeks, as British Columbia continues to recover, lessons learned from this storm will inform future responses to similar weather systems. For now, residents are advised to remain vigilant and prepared for any additional weather challenges, with recent blizzard and extreme cold in Alberta illustrating how conditions can deteriorate quickly.

 

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The Cool Way Scientists Turned Falling Raindrops Into Electricity

Raindrop Triboelectric Energy Harvesting converts falling water into electricity using Teflon (PTFE) on indium tin oxide and an aluminum electrode, forming a transient water bridge; a low frequency nanogenerator for renewable, static electricity harvesting.

 

Key Points

A method using PTFE, ITO, and an aluminum electrode to turn raindrop impacts into low frequency electrical power.

✅ PTFE on ITO boosts charge transfer efficiency.

✅ Water bridge links electrodes for rapid discharge.

✅ Low frequency output suits continuous energy harvesting.

 

Scientists at the City University of Hong Kong have used a Teflon-coated surface and a phenomenon called triboelectricity to generate a charge from raindrops. “Here we develop a device to harvest energy from impinging water droplets by using an architecture that comprises a polytetrafluoroethylene [Teflon] film on an indium tin oxide substrate plus an aluminium electrode,” they explain in their new paper in Nature as a step toward cheap, abundant electricity in the long term.

Triboelectricity itself is an old concept. The word means “friction electricity”—from the Greek tribo, to rub or wear down, which is why a diatribe tires you out—and dates back a long, long time. Static electricity is the most famous kind of triboelectric, and related work has shown electricity from the night sky can be harvested as well in niche setups. In most naturally occurring kinds, scientists have studied triboelectric in order to avoid its effects, like explosions inside of grain silos or hospital workers touching off pure oxygen. (Blowing sand causes an electric field, and NASA even worries about static when astronauts eventually land on Mars.)

One of the most studied forms of intentional and useful triboelectric is in systems such as ocean wave generators where the natural friction of waves meets nanogenerators of triboelectric energy. These even already use Teflon, which has natural conductivity that makes it ideal for this job. But triboelectricity is chaotic, and harnessing it generally involves a bunch of complicated, intersecting variables that can vary with the hourly weather. Promises of static electricity charging devices have often been, well, so much hot, sandy wind.

The scientists at City University of Hong Kong used triboelectric ideas to turn falling raindrops into energy. They say previous versions of the same idea were not very efficient, with materials that didn’t allow for high-fidelity transfer of electrical charge. (Many sources of renewable energy aren’t yet as efficient to turn into power, both because of developing technology and because their renewability means even less efficient use could be better than, for example, fossil fuels, and advances in renewable energy storage could help.)

“[A]chieving a high density of electrical power generation is challenging,” the team explains in its paper. “Traditional hydraulic power generation mainly uses electromagnetic generators that are heavy, bulky, and become inefficient with low water supply.” Diversifying how power is generated by water sources such as oceans and rivers is good for the existing infrastructure as well as new installations.

The research team found that as simulated raindrops fell on their device, the way the water accumulated and spread created a link between their two electrodes, one Teflon-coated and the other aluminum. This watery de facto wire link closes the loop and allows accumulated energy to move through the system. Because it’s a mechanical setup, it’s not limited to salty seawater, and because the medium is already water, its potential isn’t affected by ambient humidity either.

Raindrop energy is very low frequency, which means this tech joins many other existing pushes to harvest continuously available, low frequency natural energy, including underwater 'kites' that exploit steady currents. To make an interface that increases “instantaneous power density by several orders of magnitude over equivalent devices,” as the researchers say they’ve done here, could represent a major step toward feasibility in triboelectric generation.

 

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PG&E Rates Set to Stabilize in 2025

PG&E 2024 Rate Hikes signal sharp increases to fund wildfire safety, infrastructure upgrades, and CPUC-backed reliability, with rates expected to stabilize in 2025, affecting rural residents, businesses, and high-risk zones across California.

 

Key Points

PG&E’s 2024 hikes fund wildfire safety and grid upgrades, with pricing expected to stabilize in 2025.

✅ Driven by wildfire safety, infrastructure, and reinsurance costs

✅ Largest impacts in rural, high-risk zones; business rates vary

✅ CPUC oversight aims to ensure necessary, justified investments

 

Pacific Gas and Electric (PG&E) is expected to implement a series of rate hikes that, amid analyses of why California electricity prices are soaring across the state, will significantly impact California residents. These increases, while substantial, are anticipated to be followed by a period of stabilization in 2025, offering a sense of relief to customers facing rising costs.

PG&E, one of the largest utility providers in the state, announced that its 2024 rate hikes are part of efforts to address increasing operational costs, including those related to wildfire safety, infrastructure upgrades, and regulatory requirements. As California continues to face climate-related challenges like wildfires, utilities like PG&E are being forced to adjust their financial models to manage the evolving risks. Wildfire-related liabilities, which have plagued PG&E in recent years, play a significant role in these rate adjustments. In response to previous fire-related lawsuits, including a bankruptcy plan supported by wildfire victims that reshaped liabilities, and the increased cost of reinsurance, PG&E has made it clear that customers will bear part of the financial burden.

These rate hikes will have a multi-faceted impact. Residential users, particularly those in rural or high-risk wildfire zones, will see some of the largest increases. Business customers will also be affected, although the adjustments may vary depending on the size and energy consumption patterns of each business. PG&E has indicated that the increases are necessary to secure the utility’s financial stability while continuing to deliver reliable service to its customers.

Despite the steep increases in 2024, PG&E's executives have assured that the company's pricing structure will stabilize in 2025. The utility has taken steps to balance the financial needs of the business with the reality of consumer affordability. While some rate hikes are inevitable given California's regulatory landscape and climate concerns, PG&E's leadership believes the worst of the increases will be seen next year.

PG&E’s anticipated stabilization comes after a year of scrutiny from California regulators. The California Public Utilities Commission (CPUC) has been working closely with PG&E to scrutinize its rate request and ensure that hikes are justifiable and used for necessary investments in infrastructure and safety improvements. The CPUC’s oversight is especially crucial given the company’s history of safety violations and the public outrage over past wildfire incidents, including reports that its power lines may have sparked fires in California, which have been linked to PG&E’s equipment.

The hikes, though significant, reflect the broader pressures facing utilities in California, where extreme weather patterns are becoming more frequent and intense due to climate change. Wildfires, which have grown in severity and frequency in recent years, have forced PG&E to invest heavily in fire prevention and mitigation strategies, including compliance with a judge-ordered use of dividends for wildfire mitigation across its service area. This includes upgrading equipment, inspecting power lines, and implementing more rigorous protocols to prevent accidents that could spark devastating fires. These investments come at a steep cost, which PG&E is passing along to consumers through higher rates.

For homeowners and businesses, the potential for future rate stabilization offers a glimmer of hope. However, the 2024 increases are still expected to hit consumers hard, especially those already struggling with high living costs. The steep hikes have prompted public outcry, with calls for action as bills soar amplifying advocacy group arguments that utilities should absorb more of the costs related to climate change and fire prevention instead of relying on ratepayers.

Looking ahead to 2025, the expectation is that PG&E’s rates will stabilize, but the question remains whether they will return to pre-2024 levels or continue to rise at a slower rate. Experts note that California’s energy market remains volatile, and while the rates may stabilize in the short term, long-term cost management will depend on ongoing investments in renewable energy sources and continued efforts to make the grid more resilient to climate-related risks.

As PG&E navigates this challenging period, the company’s commitment to transparency and working with regulators will be crucial in rebuilding trust with its customers. While the immediate future may be financially painful for many, the hope is that the utility's focus on safety and infrastructure will lead to greater long-term stability and fewer dramatic rate increases in the years to come.

Ultimately, California residents will need to brace for another tough year in terms of utility costs but can find reassurance that PG&E’s rate increases will eventually stabilize. For those seeking relief, there are ongoing discussions about increasing energy efficiency, exploring renewable energy alternatives, and expanding assistance programs for lower-income households to help mitigate the financial strain of these price hikes.

 

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Kyiv warns of 'difficult' winter after deadly strikes

Ukraine Winter Energy Attacks strain the power grid as Russian missile strikes hit critical infrastructure, causing blackouts, civilian casualties, and damage in Kyiv, Kherson, and Kharkiv, underscoring air defense needs and looming cold-weather risks.

 

Key Points

Russian strikes on energy infrastructure cause outages, damage, and harm as Ukraine braces for freezing winter months.

✅ Russian missile barrage targets critical infrastructure nationwide.

✅ Power cuts reported in 400 localities; grid stability at risk.

✅ Kyiv seeks more air defenses as winter threats intensify.

 

Ukraine has warned that a difficult winter looms ahead after a massive Russian missile barrage targeted civilian infrastructure, killing three in the south and wounding many across the country.

Russia launched the strikes as Ukraine prepares for a third winter during Moscow's 19-month long invasion and as President Volodymyr Zelensky made his second wartime trip to Washington amid a U.S. end to grid support announcement.

"Most of the missiles were shot down. But only the majority. Not all," Zelensky said, calling for the West to provide Kyiv with more anti-missile systems to help keep the lights on this winter amid ongoing attacks.

The fresh attack came as Poland said it would honour pre-existing commitments of weapons supplies to Kyiv, a day after saying it would no longer arm its neighbour in a mounting row between the two allies.

Moscow hit cities from Rivne in western Ukraine to Kherson in the south, the capital Kyiv and cities in the centre and northeast of the country.

Kyiv also reported power cuts across the country -- in almost 400 cities, towns and villages -- as Russia targeted power plants across the grid, but said it was "too early" to tell if this was the start of a new Russian campaign against its energy sites.

Officials added that electricity reserves could limit scheduled outages if no new large-scale strikes occur.

Last winter many Ukrainians had to go without electricity and heating in freezing temperatures as Russia hit Kyiv's energy facilities.

"Difficult months are ahead: Russia will attack energy and critically important facilities," said Oleksiy Kuleba, the deputy head of Kyiv's presidential office.

Ukraine also said that it had struck a military airfield in Moscow-annexed Crimea, a claim denied by Russian-installed authorities.

'Ceilings fell down'
Russia's overnight strikes were deadliest in the southern Kherson, where three people were killed.

In Kyiv's eastern Darnitsky district, frightened residents of a dormitory woke up to their rooms with shattered windows and parked cars outside completely burnt out.

Communities have also adopted new energy solutions to cope with winter blackouts, from generators to shared warming points.

Debris from a downed missile in the capital wounded seven people, including a child.

"God, god, god," Maya Pelyukh, a cleaner who lives in the building, said as she looked at her living room covered in broken glass and debris on her bed.

Her windows and door were blown away, with the 50-year-old saying she crawled out from under a door frame.

Some residents outside were still in dressing gowns as they watched emergency workers put out a fire the authorities said had spread over 400 square meters (4,300 square feet).

In the northeastern city of Kharkiv seamstresses were clearing a damaged clothing factory, with a Russian missile hitting nearby.

"The ceilings fell down. Windows were blown out. There are chunks of the road inside," Yulia Barantsova said, as she cleared a sewing machine from dust and rubble.

 

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Covid-19: Secrets of lockdown lifestyle laid bare in electricity data

Lockdown Electricity Demand Trends reveal later mornings, weaker afternoons, and delayed peaks as WFH, streaming, and video conferencing reshape energy demand curves, grid forecasting, and residential electricity usage across Europe, New York, Tokyo, and Singapore.

 

Key Points

Shifts in power use during lockdowns: later ramps, weaker afternoons, and higher, delayed evening peaks.

✅ Morning ramp starts later; midday demand dips

✅ Evening peak shifts 1-2 hours; higher late-night usage

✅ WFH and streaming raise residential load; industrial demand falls

 

Life in lockdown means getting up late, staying up till midnight and slacking off in the afternoons.

That’s what power market data in Europe show in the places where restrictions on activity have led to a widespread shift in daily routines of hundreds of millions of people.

It’s a similar story wherever lockdowns bite. In New York City electricity use has fallen as much as 18% from normal times at 8am. Tokyo and three nearby prefectures had a 5% drop in power use during weekdays after Japan declared a state of emergency on April 7, according to Tesla Asia Pacific, an energy forecaster.

Italy’s experience shows the trend most clearly since the curbs started there on March 5, before any other European country. Data from the grid operator Terna SpA gives a taste of what other places are also now starting to report, with global daily demand dips observed in many markets as well.


1. People are sleeping later

With no commute to the office people can sleep longer. Normally, electricity demand began to pick up between 6 a.m. and 8 a.m. Now in Germany, it’s clear coffee machines don’t go on until between 8 a.m. and 9 a.m., said Simon Rathjen, founder of the trading company MFT Energy A/S.

Germany, France and Italy -- which between them make up almost two thirds of the euro-zone economy -- all have furlough measures that allow workers to receive a salary while temporarily suspended from their jobs. The U.K. also has a support package. Many of these workers will be getting up later.

"Now I have quite a relaxed start to the morning,” said David Freeman, an analyst in financial services from London. "I don’t get up until about half an hour before I need to start work.”

2. Less productive afternoons

There is a deeper dip in electricity use in the afternoons. Previously, power use rose between 2pm and 5pm. Now it dips as people head out for a walk or some air, according to UK demand data from National Grid Plc

It’s "as though we are living through a month of Sundays”, said Iain Staffell, senior lecturer in sustainable energy at Imperial College London.

3. Evenings in

From 6pm electricity use begins to rise steeply as people finish work and start chores. Restrictions like work and home schooling that prevent much daytime TV watching lifts in the early evening. This following chart for Germany shows the evening peak for power use coming during later hours.

The evening is when electricity use is highest, with most people confined to their homes. Netflix Inc reported a record 15.8 million paid subscribers – almost double the figure forecast by Wall Street analysts. Video-streaming services like Netflix and YouTube have found a captive audience. The new Disney+ service surpassed 50 million subscribers in just five months, a faster pace than predicted.

Internet traffic is skyrocketing, with a surge in bandwidth-intensive applications like streaming services and Zoom. This may mean that monthly broadband consumption of as much as 600 gigabytes, about 35% higher than before, according to Bloomberg Intelligence.

In Singapore, electricity use has dropped off significantly since the country’s "circuit-breaker” efforts to keep people at home began April 7. Electricity use has fallen and stayed low during the day. But late at night is a different story, as power demand fell sharply immediately after the lockdown began, it has steadily crept back in the past two weeks, perhaps a sign that Tiger King and The Last Dance have been finding late-night fans in the city state.

In Ottawa, COVID-19 closures made it seem as if the city had fallen off the electricity grid, according to local reports.

4. Staying up late

We’re going to bed later too. Demand doesn’t start to drop off until 10pm to 12am, at least an hour later than before.

"My children are definitely going to bed later,” said Liz Stevens, a teaching assistant from London. "Our whole routine is out the window.”

It’s challenging for those that need to predict behaviour – power grids and electricity traders. Forecasting is based on historical data, and there isn’t anything to go into the models gauging use now.

The closest we can get is looking at big events like football World Championships when people are all sitting down at the same time, according to Rathjen at MFT.

"Forecasting demand right now is very tricky,” said Chris Kimmett, director of power grids at Reactive Technologies Ltd. "A global pandemic is uncharted territory."

What normal looks like when the crisis passes is also an open question. Different countries are set to unravel their measures in their own ways, and global power demand has already surged above pre-pandemic levels in some analyses, with Germany and Austria loosening restrictions first and Italy remaining under tight control. Some changes may be permanent, with both workers and employers becoming more comfortable with working from home.

5. Different sectors consume more

In China, which is further along recovering from the pandemic than Europe or the US, the sharp contraction in overall power output masks a shift in daily routines.

Eating habits have changed. Restaurants are expanding delivery and even offering grocery services as the preference for dining at home persists. Household electricity consumption in China probably increased from activities such as cooking and heating, according to IHS Markit, which said that residential demand rose by 2.4% in the first two months as people stayed in.

The increase in technology use also drove China’s power demand from the telecom and web-service sectors to rise by 27%, the consultancy said.

Overall, China power demand in the first quarter of the year fell 6.5% from the same period in 2019 to 1.57 trillion kilowatt-hours, China’s National Energy Administration said last week. Industry uses about 70% of the country’s electricity, while the commercial sector and households account for 14% each. – Bloomberg

 

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