Colorado Bend Energy Center starts generating electricity

By Knight Ridder Tribune


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There is now more electricity available to power both economic development and keep home air-conditioners running in Texas this summer. Colorado Bend Energy Center, a new gas-fired combined cycle power plant near Wharton, started generating electricity this month with the completion of the first of two phases.

Once completed, the plant will have the capacity to generate 550-megawatt hours of power. Phase 2 is expected to go online in April 2008. Each phase has the capacity to generate 275-megawatt hours of power. The average home uses 1,500-kilowatt hours a month. Once completed, the plant will have 15 to 18 full-time employees. During construction, there are 150 to 225 construction workers.

Navasota Energy Partners LP, a Houston-based energy development and asset management company, which is building the plant, also has an identical plant under construction in Odessa. "We have actually been able to build duplicate plants in less than 400 days," Navasota Chief Financial Officer Dan Hudson said.

"There were a lot of experts in the industry that didn't think it could be done." The electricity produced by the plant will be distributed through the Electric Reliability Council of Texas, Hudson said. ERCOT maintains the reliability of the power grid that operates in the state of Texas.

"There is open competition in the electric industry in Texas," Hudson said. "We have an energy manager, Eagle Energy, that will handle the marketing while our company concentrates on production. We will be selling to marketing companies, wholesalers and major industrial users, among others. For example, the LCRA is one of our buyers and vice versa. When there is a peak in one location, they buy from others in the ERCOT system."

Hudson said part of the reason for phasing in the plant's production is to allow time for the grid to be updated to add its contribution to the electric needs of the state. "One of the issues we have been dealing with is the need for multiple transmission upgrades," he said.

"In the Sugar Land area, the system was not robust enough to handle our full capacity. So while we are building additional production capability, they will be building additional transmission capacity. About $30 million in improvements." Hudson said as a privately held company with investors, Navasota doesn't discuss capital costs for competitive reasons.

But in previous news releases, the company indicated the Colorado Bend plant would cost about $180 million. In addition, those previous releases stated the two Navasota plants are the only ones scheduled to come on line in Texas until 2010-2011. And as the newest plants, Hudson said, they are also the most modern both in terms of generation costs and environmental impact. As a combined cycle plant, the facility retains the initial heat of the generating process and feeds it back into the system to increase efficiency.

"The typical steam electric plant needs 12,000 to 13,000 BTU to generate one kilowatt of electricity per hour," he said.

"Our plant only needs around 7,000, making it 30 to 40 percent more efficient. We also have to meet all of the state and federal pollution control standards regarding emissions such as NOX controls for the reduction of nitrous oxide emissions." The plant is also designed to be more water efficient. The water used is pumped from three on-site water wells.

"And we cycle the water through the cooling towers between seven and eight times before discharging it," Hudson said. "And then it goes into a long ditch only two to three inches deep before eventually being fed into the Colorado River. We've had to meet all of the Army Corps of Engineers guidelines regarding the water discharges."

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US judge orders PG&E to use dividends to pay for efforts to reduce wildfire risks

PG&E dividend halt for wildfire mitigation directs cash from shareholders to tree clearing, wildfire risk reduction, and probation compliance under Judge William Alsup, amid bankruptcy, Camp Fire liabilities, and power line vegetation management mandates.

 

Key Points

A court-ordered dividend halt funding vegetation clearance and wildfire mitigation as PG&E meets probation terms.

✅ Judge Alsup bars dividends until mitigation targets met

✅ 375,000 trees cleared near power lines in high-risk zones

✅ Measures tied to probation amid bankruptcy and liabilities

 

A U.S. judge said on Tuesday that PG&E may not resume paying dividends and must use the money to fund its plan for cutting down trees to reduce the risk of wildfires in California, stopping short of more costly measures he proposed earlier this year.

The new criminal probation terms for PG&E are modest compared with ones the judge had in mind in January and that PG&E said could have cost upwards of $150 billion.

The terms will, however, keep PG&E under the supervision of Judge William Alsup of the U.S. District Court for the Northern District of California and hold the company, which also is in Chapter 11 bankruptcy and whose bankruptcy plan has drawn support from wildfire victims, to its target for clearing areas around its power lines of some 375,000 trees this year.

PG&E's probation stems from its felony conviction after a deadly 2010 natural gas pipeline blast in San Bruno, California, near San Francisco, that killed eight people and injured 58 others.

PG&E filed for bankruptcy protection on Jan. 29 in anticipation of liabilities from wildfires, including a catastrophic 2018 blaze, the Camp Fire, for which PG&E later pleaded guilty to 85 counts in state court. It killed 86 people in the deadliest and most destructive wildfire in California history.

At a January hearing, Alsup, who is overseeing PG&E's probation, said he felt compelled to propose additional probation terms in the aftermath of Camp Fire. San Francisco-based PG&E expects its equipment will be found to have caused the blaze.

The probation process is separate from San Francisco-based PG&E's bankruptcy filing and from operational measures such as its pandemic response and shutoff moratorium implemented to protect customers.

As the company faces $30 billion in wildfire liabilities and bankruptcy proceedings and has opened a wildfire assistance program for affected residents, the energy company is expected to name as its new chief executive Bill Johnson, a source said on Tuesday. Johnson has been the CEO of the Tennessee Valley Authority since 2013 and is retiring on Friday.

Additional probation terms imposed by Alsup on Tuesday will require PG&E to meet goals in a wildfire mitigation plan it unveiled in February.

The goals include removing 375,000 dead, dying or hazardous trees from areas at high risk of wildfires in 2019, compared with 160,000 last year.

The judge said PG&E will not be able to pay shareholders until it complies with his new probation terms.

Shares fell 2% on Tuesday to close at $17.66 on the New York Stock Exchange and are down 63% since November 2018 due to concerns about the company's bankruptcy and wildfire liabilities, though the utility has said rates are set to stabilize in 2025 as part of its long-term plan. The shares traded as low as $5.07 in January.

PG&E in December 2017 suspended its quarterly cash dividend, while continuing to pay significant property taxes to California counties, citing uncertainty about liabilities from wildfires in October of that year that struck Northern California.

PG&E paid $798 million in dividends in 2017 and $925 million in 2016, a period in which the company did a poor job of clearing areas around its power lines of hazardous trees, according to Alsup.

Money meant for shareholders should have been spent on efforts to reduce wildfire risks in recent years, Alsup said at Tuesday's hearing.

"PG&E has started way more than its share of these fires," Alsup said.

"I want to see the people of California safe," the judge added.

Lawyers for PG&E did not contest the new terms, which the company considers more feasible than terms Alsup proposed in January.

To comply with the terms Alsup proposed in January, PG&E said it would have to remove 100 million trees. The company added that shutting power lines during high winds as Alsup proposed would not be feasible because the lines traverse rural areas to service cities and suburbs.

Idling lines could also affect the power grid in other states, PG&E said.

Alsup on Tuesday said he was still considering his proposal to require PG&E to shut down power lines during windy weather to prevent tree branches from making contact and sparking wildfires linked to power lines in the region.

 

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Fixing California's electric grid is like repairing a car while driving

CAISO Clean Energy Transition outlines California's path to 100% carbon-free power by 2045, scaling renewables, battery storage, and offshore wind while safeguarding grid reliability, managing natural gas, and leveraging Western markets like EDAM.

 

Key Points

CAISO Clean Energy Transition is the plan to reach 100% carbon-free power by 2045 while maintaining grid reliability.

✅ Target: add 7 GW/year to reach 120 GW capacity by 2045

✅ Battery storage up 30x; smooths intermittent solar and wind

✅ EDAM and WEIM enhance imports, savings, and reliability

 

Mark Rothleder, Chief Operating Officer and Senior Vice President at the California Independent System Operator (CAISO), which manages roughly 80% of California’s electric grid, has expressed cautious optimism about meeting the state's ambitious clean energy targets while keeping the lights on across the grid. However, he acknowledges that this journey will not be without its challenges.

California aims to transition its power system to 100% carbon-free sources by 2045, ensuring a reliable electricity supply at reasonable costs for consumers. Rothleder, aware of the task's enormity, likens it to a complex car repair performed while the vehicle is in motion.

Recent achievements have demonstrated California's ability to temporarily sustain its grid using clean energy sources. According to Rothleder, the real challenge lies in maintaining this performance round the clock, every day of the year.

Adding thousands of megawatts of renewable energy into California’s existing 50-gigawatt system, which needs to expand to 120 gigawatts to meet the 2045 goal, poses a significant challenge, though recent grid upgrade funding offers some support for needed infrastructure. CAISO estimates that an addition of 7 gigawatts of clean power per year for the next two decades is necessary, all while ensuring uninterrupted power delivery.

While natural gas currently constitutes California's largest single source of power, Rothleder notes the need to gradually decrease reliance on it, even as it remains an operational necessity in the transition phase.

In 2023, CAISO added 5,660 megawatts of new power to the grid, with plans to integrate over 1,100 additional megawatts in the next six to eight months of 2024. Battery storage, crucial for mitigating the intermittent nature of wind and solar power, has seen substantial growth as California turns to batteries for grid support, increasing 30-fold in three years.

Rothleder emphasizes that electricity reliability is paramount, as consumers always expect power availability. He also highlights the potential of offshore wind projects to significantly contribute to California's power mix by 2045.

The offshore wind industry faces financial and supply chain challenges despite these plans. CAISO’s 20-year outlook indicates a significant increase in utility-scale solar, requiring extensive land use and wider deployment of advanced inverters for grid stability.

Addressing affordability is vital, especially as California residents face increasing utility bills. Rothleder suggests a broader energy cost perspective, encompassing utility and transportation expenses.

Despite smooth grid operations in 2023, challenges in previous years, including extreme weather-induced power outages driven by climate change, underscore the need for a robust, adaptable grid. California imports about a quarter of its power from neighbouring states and participates in the Western Energy Imbalance Market, which has yielded significant savings.

CAISO is also working on establishing an extended day-ahead electricity market (EDAM) to enhance the current energy market's success, building on insights from a Western grid integration report that supports expanded coordination.

Rothleder believes that a thoughtfully designed, diverse power system can offer greater reliability and resilience in the long run. A future grid reliant on multiple, smaller power sources such as microgrids could better absorb potential losses, ensuring a more reliable electricity supply for California.

 

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The UK’s energy plan is all very well but it ignores the forecast rise in global sea-levels

UK Marine Energy and Climate Resilience can counter sea level rise and storm surge with tidal power, subsea turbines, heat pumps, and flood barriers, delivering renewable electricity, stability, and coastal protection for the United Kingdom.

 

Key Points

Integrated use of tidal power, barriers, and heat pumps to curb sea level rise, manage storms, and green the UK grid.

✅ Tidal bridges and subsea turbines enhance baseload renewables

✅ Integrated barriers cut storm surge and river flood risk

✅ Heat pumps and marine heat networks decarbonize coastal cities

 

IN concentrating on electrically driven cars, the UK’s new ten-point energy plans, and recent UK net zero policies, ignores the elephant in the room.

It fails to address the forecast six-metre sea level rise from global warming rapidly melting the Greenland ice sheet.

Rising sea levels and storm surge, combined with increasingly heavy rainfall swelling our rivers, threaten not only hundreds of coastal communities but also much unprotected strategic infrastructure, including electricity systems that need greater resilience.

New nuclear power stations proposed in this United Kingdom plan would produce radioactive waste requiring thousands of years to safely decay.

This is hardly the solution for the Green Energy future, or the broader global energy transition, that our overlooked marine energy resource could provide.

Sea defences and barrier design, built and integrated with subsea turbines and heat pumps, can deliver marine-driven heat and power to offset the costs, not only of new Thames Barriers, but also future Severn, Forth and other barrages, while reducing reliance on high-GWP gases such as SF6 in switchgear across the grid.

At the Pentland Firth, existing marine turbine power could be enhanced by turbines deployed from new tidal bridges to provide much of UK’s electricity needs, as nations chart an electricity future that replaces fossil fuels, from its estimated 60 gigawatt capability.

Energy from Bluemull Sound could likewise be harvested and exported or used to enhance development around UK’s new space station at Unst.

The 2021 Climate Change Summit gives Glasgow the platform to secure Scotland’s place in a true green, marine energy future and help build an electric planet for the long term.

We must not waste this opportunity.

THERE is no vaccine for climate change.

It is, of course, wonderful news that such progress is being made in the development of Covid-19 vaccines but there is a risk that, no matter how serious the Covid crisis is, it is distracting attention, political will and resources from the climate crisis, a much longer term and more devastating catastrophe.

They are intertwined. As climate and ecological systems change, vectors and pathogens migrate and disease spreads.

What lessons can be learned from one to apply to the other?

Prevention is better than cure. We need to urgently address the climate crisis, charting a path to net zero electricity by the middle of the century, to help prevent future pandemics.

We are only as safe as the most vulnerable. Covid immunisation will protect the most vulnerable; to protect against the effects of climate change we need to look far more deeply. Global challenges require systemic change.

Neither Covid or climate change respect national borders and, for both, we need to value and trust science and the scientific experts and separate them from political posturing.

 

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Feds "changing goalposts" with 2035 net-zero electricity grid target: Sask. premier

Canada Clean Electricity Regulations outline a 2035 net-zero grid target, driving decarbonization via wind, solar, hydro, SMRs, carbon capture, and efficiency, balancing reliability, affordability, and federal-provincial collaboration while phasing out coal and limiting fossil-fuel generation.

 

Key Points

Federal rules to cap CO2 from power plants and deliver a reliable, affordable net-zero grid by 2035.

✅ Applies to fossil-fired units; standards effective by Jan 1, 2035.

✅ Promotes wind, solar, hydro, SMRs, carbon capture, and efficiency.

✅ Balances reliability, affordability, and emissions cuts; ongoing consultation.

 

Saskatchewan’s premier said the federal government is “changing goalposts” with its proposed target for a net-zero electricity grid.

“We were looking at a net-zero plan in Saskatchewan and across Canada by the year 2050. That’s now been bumped to 2035. Well there are provinces that quite frankly aren’t going to achieve those types of targets by 2035,” Premier Scott Moe said Wednesday.

Ottawa proposed the Clean Electricity Regulations – formerly the Clean Electricity Standard – as part of its target for Canada to transition to net-zero emissions by 2050.

The regulations would help the country progress towards an updated proposed goal of a net-zero electricity grid by 2035.

“They’re un-consulted, notional targets that are put forward by the federal government without working with industries, provinces or anyone that’s generating electricity,” Moe said.

The Government of Canada was seeking feedback from stakeholders on the plan’s regulatory framework document earlier this year, up until August 2022.

“The clean electricity standard is something that’s still being consulted on and we certainly heard the views of Saskatchewan – not just Saskatchewan, many other provinces – and I think that’s something that’s being reflected on,” Jonathan Wilkinson, Canada’s minister of natural resources, said during an event near Regina Wednesday.

“We also recognize that the federal government has a role to play in helping provinces to make the kinds of changes that would need to be made in order to actually achieve a clean grid,” Wilkinson added.

The information received during the consultation will help inform the development of the proposed regulations, which are expected to be released before the end of the year, according to the federal government.


NET-ZERO ELECTRICITY GRID
The federal government said its Clean Electricity Regulations (CER) is part of a suite of measures, as the country moves towards a broad “decarbonization” of the economy, with Alberta's clean electricity path illustrating provincial approaches as well.

Net-zero emissions would mean Canada’s economy would either emit no greenhouse gas emissions or offset its emissions.

The plan encourages energy efficiency, abatement and non-emitting generation technologies such as carbon capture and storage and electricity generation options such as solar, wind, geothermal, small modular nuclear reactors (SMRs) and hydro, among others.

The government suggests consumer costs could be lowered by using some of these energy efficiency techniques, alongside demand management and a shift to lower-cost wind and solar power, echoing initiatives like the SaskPower 10% rebate aimed at affordability.

The CER focuses on three principles, each tied to affordability debates like the SaskPower rate hike in Saskatchewan:

 Maximize greenhouse gas reductions to achieve the 2035 target
 Ensure a reliable electrical grid to support Canadians and the economy
 Maintain electrical affordability

“Achieving a net-zero electricity supply is key to reaching Canada’s climate targets in two ways,” the government said in its proposed regulations.

“First, it will reduce [greenhouse gas] emissions from the production of electricity. Second, using clean electricity instead of fossil fuels in vehicles, heating and industry will reduce emissions from those sectors too.

The regulations would regulate carbon dioxide emissions from electricity generating units that combust any amount of fossil fuel, have a capacity above a small megawatt threshold and sell electricity onto a regulated electricity system.

New rules would also be implemented for the development of new electricity generation units firing fossil fuels in or after 2025 and existing units. All units would be subject to emission standards by Jan. 1, 2035, at the latest.

The federal government launched consultations on the proposed regulations in March 2022.

Canada also has a 2030 emissions reduction plan that works towards meeting its Paris Agreement target to reduce emissions by 40-45 per cent from 2005 levels by 2030. This plan includes regulations to phase out coal-fired electricity by 2030.


COLLABORATION
The province recently introduced the Saskatchewan First Act, in an attempt to confirm its own jurisdiction and sovereignty when it comes to natural resources.

The act would amend Saskatchewan’s constitution to exert exclusive legislative jurisdiction under the Constitution of Canada.

The province is seeking jurisdiction over the exploration of non-renewable resources, the development, conservation and management of non-renewable natural and forestry resources, and the operation of sites and facilities for the generation and production of electrical energy.

While the federal government and Saskatchewan have come head-to-head publicly over several policy concerns in the past year, both sides remain open to collaborating on issues surrounding natural resources.

“We do have provincial jurisdiction in the development of these natural resources. We’d like to work collaboratively with the federal government on developing some of the most sustainable potash, uranium, agri-food products in the world,” Moe said.

Minister Wilkinson noted that while both the federal and provincial governments aim to respect each other’s jurisdiction, there is often some overlap, particularly in the case of environmental and economic policies, with Alberta's electricity sector changes underscoring those tensions as well.

“My view is we should endeavour to try to figure out ways that we can work together, and to ensure that we’re actually making progress for Saskatchewanians and for Canadians,” Wilkinson said.

“I think that Canadians expect us to try to figure out ways to work together, and where there are some disputes that can’t get resolved, ultimately the Supreme Court will decide on the issue of jurisdiction as they did in the case on the price on pollution.”

Moe said Saskatchewan is always open to working with the federal government, but not at the expense of its “provincial, constitutional autonomy.”

 

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Energy experts: US electric grid not designed to withstand the impacts of climate change

Summer Power Grid Reliability and Climate Risk drives urgent planning as extreme heat, peak demand, drought, and aging infrastructure strain ERCOT, NERC regions, risking outages without renewables integration and climate-informed grid modeling.

 

Key Points

Assessment of how extreme weather and demand stress the US grid, informing climate-smart planning to reduce outages.

✅ Many operators rely on historical weather, not climate projections

✅ NERC flags elevated blackout risk amid extreme heat and drought

✅ Renewables and storage can boost capacity and cut emissions

 

As heat ramps up ahead of what forecasters say will be a hotter than normal summer, electricity experts and officials are warning that states may not have enough power to meet demand in the coming months. And many of the nation's grid operators are also not taking climate change into account in their planning, despite available grid resilience guidance that could inform upgrades, even as extreme weather becomes more frequent and more severe.

Power operators in the Central US, in their summer readiness report, have already predicted "insufficient firm resources to cover summer peak forecasts." That assessment accounted for historical weather and the latest NOAA outlook that projects for more extreme weather this summer.

But energy experts say that some power grid operators are not considering how the climate crisis is changing our weather — including more frequent extreme events — and that is a problem if the intent is to build a reliable power grid while accelerating investing in carbon-free electricity across markets.

"The reality is the electricity system is old and a lot of the infrastructure was built before we started thinking about climate change," said Romany Webb, a researcher at Columbia University's Sabin Center for Climate Change Law. "It's not designed to withstand the impacts of climate change."

Webb says many power grid operators use historical weather to make investment decisions, rather than the more dire climate projections, simply because they want to avoid the possibility of financial loss, even as climate-related credit risks for nuclear plants are being flagged, for investing in what might happen versus what has already happened. She said it's the wrong approach and it makes the grid vulnerable.

"We have seen a reluctance on the part of many utilities to factor climate change into their planning processes because they say the science around climate change is too uncertain," Webb said. "The reality is we know climate change is happening, we know the impact it has in terms of more severe heatwaves, hurricanes, drought, with recent hydropower constraints in British Columbia illustrating the risks, and we know that all of those things affect the electricity system so ignoring those impacts just makes the problems worse."

An early heatwave knocked six power plants offline in Texas earlier this month. Residents were asked to limit electricity use, keeping thermostats at 78 degrees or higher and, as extreme heat boosts electricity bills for consumers, avoid using large appliances at peak times. The Electric Reliability Council of Texas, or ERCOT, in its seasonal reliability report, said the state's power grid is prepared for the summer and has "sufficient" power for "normal" summer conditions, based on average weather from 2006 to 2020.

But NOAA's recently released summer outlook forecasts above average temperatures for every county in the nation.

"We are continuing to design and site facilities based on historical weather patterns that we know in the age of climate change are not a good proxy for future conditions," Webb said.

When asked if the agency is creating a blind spot for itself by not accounting for extreme weather predictions, an ERCOT spokesperson said the report "uses a scenario approach to illustrate a range of resource adequacy outcomes based on extreme system conditions, including some extreme weather scenarios."

The North American Electric Reliability Corporation, or NERC — a regulating authority that oversees the health of the nation's electrical infrastructure — has a less optimistic projection.

In a recent seasonal reliability report, NERC placed Texas at "elevated risk" for blackouts this summer. It also reported that while much of the nation will have adequate electricity this summer, several markets are at risk of energy emergencies.

California grid operators, who recently avoided widespread rolling blackouts as heat strained the grid, in its summer reliability report also based its readiness analysis on "the most recent 20 years of historical weather data." The report also notes the assessment "does not fully reflect more extreme climate induced load and supply uncertainties."

Compounding the US power grid's supply and demand problem is drought: NERC says there's been a 2% loss of reliable hydropower from the nation's power-producing dams. Add to that the rapid retirement of many coal power plants — all while nearly everything from toothbrushes to cars are now electrified. Energy experts say adding more renewables into the mix will have the dual impact of cutting climate change inducing greenhouse gas emissions but also increasing the nation's power supply, aligning with efforts such as California's 100% carbon-free mandate that aim to speed the transition.
 

 

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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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