Stretching wire generates current

By Motion System Design


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Researchers at Georgia Tech have developed a new type of electric power generator able to produce AC current through cyclical stretching and releasing of zinc oxide wires. The new “flexible charge pump” generator is the fourth generation of devices designed to produce electrical current by using the piezoelectric properties of zinc oxide structures to harvest mechanical energy from the environment.

“The flexible charge pump offers yet another option for converting mechanical energy into electrical energy,” says Zhong Lin Wang, director of the Center for Nanostructure Characterization at the Georgia Institute of Technology. The generator can produce an oscillating output voltage of up to 45 millivolts. To boost the current produced, arrays of the flexible charge pumps could be constructed and connected in series. Multiple layers of the generators could also be stacked to form modules that could be implanted in the human body to power blood pressure sensors or other devices.

When the modules are mechanically stretched and released, the zinc oxide material generates a piezoelectric potential that alternately builds up and then is released. The wires are encapsulated in a flexible plastic substrate with two bonded ends; a Schottky barrier controls the alternating flow of electrons, and the piezoelectric potential is the driving force of the charge pump.

To measure generated electric energy in tests, researchers subjected the substrate and attached zinc oxide wires to periodic mechanical bending created by a motor-driven mechanical arm. Bending induces tensile strain, which creates a piezoelectric potential field along the laterally packaged wires. That in turn drives a flow of electrons into an external circuit, creating the alternating charge and discharge cycle – and corresponding current flow. Wang envisions a family of small-scale generators enabling development of a new class of self-powered wireless sensing systems that could gather, store, and transmit information without an external power source.

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Energy-insecure households in the U.S. pay 27% more for electricity than others

Community Solar for Low-Income Homes expands energy equity by delivering renewable energy access, predictable bill savings, and tax credit benefits to renters and energy-insecure households, accelerating distributed generation and storage adoption nationwide.

 

Key Points

A program model enabling renters and LMI households to subscribe to off-site solar and save on utility bills.

✅ Earn bill credits from shared solar generation.

✅ Expands access for renters and LMI subscribers.

✅ Often paired with storage and IRA tax credit adders.

 

On a square-foot basis, the issue of inequality is made worse by higher costs for energy usage in the nation. Efforts like community solar programs such as Maryland community solar are underway to boost low-income participation in the cost benefits of renewable energy.

The Energy Information Administration (EIA) shows that households that are considered energy insecure, or those that have the inability to adequately meet basic household energy costs, are paying more for electricity than their wealthier counterparts. 

On average in the United States in 2020, households were billed about $1.04 per square foot for all energy sources. For homes that did not report energy insecurity, that average was $0.98 per square foot, while homes with energy insecurity issues paid an average of $1.24 per square foot for energy. This means that U.S. residents that need the most support on their energy bills are stuck with costs 27% higher than their neighbors on square-foot-basis.

EIA said energy-insecure households have reduced or forgone basic necessities to pay energy bills, kept their houses at unsafe temperatures because of energy cost concerns, or been unable to repair heating or cooling equipment because of cost.

In 2020, households with income less than $10,000 a year were billed an average of $1.31 per square foot for energy, while households making $100,000 or more were billed an average of $0.96 per square foot, said EIA. Renters paid considerably more ($1.28 per square foot) than owners ($0.98 per square foot). There were also considerable differences between regions, with New England solar growth sparking grid upgrade debates, ethnic groups and races, and insulation levels, as seen below.

The energy transition toward renewables like solar has offered price stability, amid record solar and storage growth nationwide, but thus far energy-insecure communities have relatively been left behind. A recent Berkeley Lab report, Residential Solar-Adopter Income and Demographic Trends, indicates that even though the rate of solar adoption among low-income residents is increasing (from 5% in 2010 to 11% in 2021), that segment of energy consumers remains under-represented among solar adopters, relative to its share of the population.


Community solar efforts

As such, the United States is targeting communities most impacted by energy costs that have not benefitted from the transition, highlighting “Energy Communities” that are eligible for an additional 10% tax credit through funds made possible by the Inflation Reduction Act.

Additionally, a push for community solar development is taking place nationwide to extend access to affordable solar energy to renters and other residents that aren’t able to leverage finances to invest in predictable, low-cost residential solar systems. The Biden Administration set a goal this year to sign up 5 million community solar households, achieving $1 billion in bill savings by 2025. The community solar model only represents about 8% of the total distributed solar capacity in the nation. This target would entail a jump from 3 GW installed capacity to 20 GW by the target year. The Department of Energy estimates community solar subscribers save an average of 20% on their bills.

California this year passed AB 2316, the Community Renewable Energy Act takes aim at four acute problems in the state’s power market: reliability amid rising outage risks, rates, climate and equity. The law creates a community renewable energy program, including community solar-plus-storage, supported by cheaper batteries, to overcome access barriers for nearly half of Californians who rent or have low incomes. Community solar typically involves customers subscribing to an off-site solar facility, receiving a utility bill credit for the power it generates.

“Community renewable energy is a proven powerful tool to help close California’s clean energy gap, bringing much needed relief to millions struggling with high housing costs and utility debt,” said Alexis Sutterman, energy equity program manager at the California Environmental Justice Alliance.

The program has energy equity baked into its structure, working to make sure Californians of all income levels participate in the benefits of the energy transition. Not only does it open solar access to renters, the law ensures that at least 51% of subscribers are low-income customers, which is expected to make projects eligible for a 10% tax credit adder under the IRA.

“The money’s on the table now,” said Jeff Cramer, president and chief executive of the Coalition for Community Solar Access. “While there are groups pushing for solar access for all, and states with strong legislation, there are other pockets of interest in surprising places in the United States. For example, Louisiana has no policy for community solar or support for low-income residents going solar but the city of New Orleans has its own utility commission with a community solar program. In Nebraska, forward-looking co-operatives have created community solar projects.

Community solar markets are active in 22 states, with more expected to come online in the future as states pursue 100% clean energy targets across the country. However, the market is expected to require strong community outreach efforts to foster trust and gain subscribers.

“There is a distrust of community solar initially in LMI communities as many have been burned before by retail energy false promises,” said Eric LaMora, executive director, community solar, Nautilus Solar on a panel at the Solar Energy Industries Association Finance, Tax, and Buyers seminar. “People are suspicious but there really are no hooks with community solar.”

LMI residents are leery to provide tax records or much documents at all in order to sign up for community solar, LaMora said. “We were surprised to see less of a default rate with LMI residents. We attribute this to the fact that they see significant savings on their electric bill, making it easier to pay each month,” he said.

 

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Working From Home Will Drive Up Electricity Bills for Consumers

Remote Work Energy Costs are rising as home offices and telecommuting boost electricity bills; utilities, broadband usage, and COVID-19-driven stay-at-home policies affect productivity, consumption patterns, and household budgets across the U.K. and Europe.

 

Key Points

Remote Work Energy Costs are increased household electricity and utility expenses from telecommuting and home office use.

✅ WFH shifts energy load from offices to households.

✅ Higher device, lighting, and heating/cooling usage drives bills.

✅ Broadband access gaps limit remote work equity.

 

Household electricity bills are set to soar, with rising residential electricity use tied to the millions of people now working at home to avoid catching the coronavirus.

Running laptops and other home appliances will cost consumers an extra 52 million pounds ($60 million) each week in the U.K., according to a study from Uswitch, a website that helps consumers compare the energy prices that utilities charge.

For each home-bound household, the pain to the pocketbook may be about 195 pounds per year extra, even as some utilities pursue pandemic cost-cutting to manage financial pressures.

The rise in price for households comes even as overall demand is falling rapidly in Europe, with wide swaths of the economy shut down to keep workers from gathering in one place, and the U.S. grid overseer issuing warnings about potential pandemic impacts on operations.

People stuck at home will plug in computers, lights and appliances when they’d normally be at the office, increasing their consumption.

With the Canadian government declaring a state of emergency due to the coronavirus, companies are enabling work-from-home structures to keep business running and help employees follow social distancing guidelines, and some utilities have even considered housing critical staff on site to maintain operations. However, working remotely has been on the rise for a while.

“The coronavirus is going to be a tipping point. We plodded along at about 10% growth a year for the last 10 years, but I foresee that this is going to really accelerate the trend,” Kate Lister, president of Global Workplace Analytics.

Gallup’s State of the Workplace 2017 study found that 43% of employees work remotely with some frequency. Research indicates that in a five-day workweek, working remotely for two to three days is the most productive. That gives the employee two to three days of meetings, collaboration and interaction, with the opportunity to just focus on the work for the other half of the week.

Remote work seems like a logical precaution for many companies that employ people in the digital economy, even as some federal agencies sparked debate with an EPA telework policy during the pandemic. However, not all Americans have access to the internet at home, and many work in industries that require in-person work.

According to the Pew Research Center, roughly three-quarters of American adults have broadband internet service at home. However, the study found that racial minorities, older adults, rural residents and people with lower levels of education and income are less likely to have broadband service at home. In addition, 1 in 5 American adults access the internet only through their smartphone and do not have traditional broadband access. 

Full-time employees are four times more likely to have remote work options than part-time employees. A typical remote worker is college-educated, at least 45 years old and earns an annual salary of $58,000 while working for a company with more than 100 employees, according to Global Workplace Analytics, and in Canada there is growing interest in electricity-sector careers among younger workers. 

New York, California and other states have enacted strict policies for people to remain at home during the coronavirus pandemic, which could change the future of work, and Canadian provinces such as Saskatchewan have documented how the crisis has reshaped local economies across sectors.

“I don’t think we’ll go back to the same way we used to operate,” Jennifer Christie, chief HR officer at Twitter, told CNBC. “I really don’t.”

 

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Electrification Of Vehicles Prompts BC Hydro's First Call For Power In 15 Years

BC Hydro Clean Power Call 2024 seeks utility-scale renewable energy, including wind and solar, to meet rising electricity demand, advance clean goals, expand grid, and support Indigenous participation through competitive procurement and equity opportunities.

 

Key Points

BC Hydro's 2024 bid to add zero-emission wind and solar to meet rising demand and support Indigenous equity.

✅ Competitive procurement for utility-scale wind and solar

✅ Targets 3,000 GWh new greenfield by fiscal 2029

✅ Encourages Indigenous ownership and equity stakes

 

The Government of British Columbia (the Government or Province) has announced that BC Hydro would be moving forward with a call for new sources of 100 percent clean, renewable emission-free electricity, notably including wind and solar, even as nuclear power remains a divisive option among residents. The call, expected to launch in spring 2024, is BC Hydro's first call for power in 15 years and will seek power from larger scale projects.

Over the past decade, British Columbia has experienced a growing economy and population as well as a move by the housing, business and transportation sectors towards electrification, with industrial demand from LNG facilities also influencing load growth. As the Government highlighted in their recent announcement, the number of registered light-duty electric vehicles in British Columbia increased from 5,000 in 2016 to more than 100,000 in 2023. Zero-emission vehicles represented 18.1 percent of new light-duty passenger vehicles sold in British Columbia in 2022, the highest percentage for any province or territory.

Ultimately, the Province now expects electricity demand in British Columbia to increase by 15 percent by 2030. BC Hydro elaborated on the growing need for electricity in their recent Signposts Update to the British Columbia Utilities Commission (BCUC), and noted additions such as new generating stations coming online to support capacity. BC Hydro implemented its Signposts Update process to monitor whether the "Near-term actions" established in its 2021 Integrated Resource Plan continue to be appropriate and align with the changing circumstances in electricity demand. Those actions outline how BC Hydro will meet the electricity needs of its customers over the next 20 years. The original Near-term actions focused on demand-side management and not incremental electricity production.

In its Update, BC Hydro emphasized that increased use of electricity and decreased supply, along with episodes of importing out-of-province fossil power during tight periods, has advanced the forecast of the province's need for additional renewable energy by three years. Accordingly, BC Hydro has updated its 2021 Integrated Resource Plan to, among other things:

accelerate the timing of several Near-term actions on energy efficiency, demand response, industrial load curtailment, electricity purchase agreement renewals and utility-scale batteries; and
add new Near-term actions for BC Hydro to acquire an additional 3,000 GWh per year of new clean, renewable energy from greenfield facilities in the province able to achieve commercial operation as early as fiscal 2029, as well as approximately 700 GWh per year of new clean, renewable energy from existing facilities prior to fiscal 2029.
The Province's predictions align with Canada Energy Regulator's (CER) "Canada's Energy Future 2023" flagship report (Report) released on June 20, 2023. The Report, which looks at Canadians' possible energy futures, includes two long-term scenarios modelled on Canada reaching net-zero by 2050. Under either scenario, the electricity sector is predicted to serve as the cornerstone of the net-zero energy system, with examples such as Hydro-Quebec's decarbonization strategy illustrating this shift as it transforms and expands to accommodate increasing electricity use.

Key Details of the Call
Though not finalized, the call for power will be a competitive process, with the exact details to be designed by BC Hydro and the Province, incorporating input from the recently-formed BC Hydro Task Force made up of Indigenous communities, industry and stakeholders. This is a shift from previous calls for power, which operated as a continuous-intake program with a standing offer at a fixed rate, after projects like the Siwash Creek project were left in limbo.

Drawing on advice from Indigenous and external energy experts, the Province seeks to advance Indigenous ownership and equity interest opportunities in the electricity sector, potentially with minimum requirements for Indigenous participation in new projects to be a condition of the competitive process. The Province has also committed $140 million to the B.C. Indigenous Clean Energy Initiative (BCICEI) to support Indigenous-led power projects and their ability to respond to future electricity demand, facilitating their ability to compete in the call for power, despite their smaller size.

BC Hydro expects to initiate the call in spring 2024, with the goal of acquiring new sources of electricity as early as 2028, even as clean electricity affordability features prominently in Ontario's election discourse.

 

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California faces huge power cuts as wildfires rage

California Wildfire Power Shut-Offs escalate as PG&E imposes blackouts amid high winds, Getty and Kincade fires, mass evacuations, Sonoma County threats, and a state of emergency, drawing regulatory scrutiny over grid safety and outage scope.

 

Key Points

Planned utility outages to curb wildfire risk during extreme winds, prompting evacuations and regulatory scrutiny.

✅ PG&E preemptive blackouts under regulator inquiry

✅ Getty and Kincade fires drive mass evacuations

✅ Sonoma County under threat amid high winds

 

Pacific Gas & Electric (PG&E) already faces an investigation by regulators after cutting supplies to 970,000 homes and businesses amid California blackouts that raised concerns.

It announced that another 650,000 properties would face precautionary shut-offs.

Wildfires fanned by the strong winds are raging in two parts of the state.

Thousands of residents near the wealthy Brentwood neighbourhood of Los Angeles have been told to evacuate because of a wildfire that began early on Monday.

Further north in Sonoma County, a larger fire has forced 180,000 people from their homes.

California's governor has declared a state-wide emergency.

 

What about the power cuts?

On Monday regulators announced a formal inquiry into whether energy utilities broke rules by pre-emptively cutting power to an estimated 2.5 million people, amid a blackouts policy debate that intensified, as wildfire risks soared.

They did not name any utilities but analysts said PG&E was responsible for the bulk of the "public safety power shut-offs", and later faced a Camp Fire guilty plea that underscored its liabilities.

The company filed for bankruptcy in January after facing hundreds of lawsuits from victims of wildfires in 2017 and 2018.

Of the 970,000 properties hit by the most recent cuts, under half had their services back by Monday, and some sought help through wildfire assistance programs, the Associated Press reported.

Despite criticism that the precautionary blackouts were too widespread and too disruptive, PG&E said more would come on Tuesday and Wednesday because further strong winds were expected.

The company said it had logged more than 20 preliminary reports of damage to its network from the most recent windstorm.

In a video posted to Twitter on Saturday, Governor Gavin Newsom said the power cuts were "infuriating everyone, and rightfully so".

 

Where are the fires now?

In Los Angeles, the Getty Fire has burned over 600 acres (242 ha) and about 10,000 buildings are in the mandatory evacuation zone.

At least eight homes have been destroyed and five others damaged.

"If you are in an evacuation zone, don't screw around," Mr Schwarzenegger tweeted. "Get out."

LA fire chief Ralph Terrazas said fire crews had been "overwhelmed" by the scale of the fires.

"They had to make some tough decisions on which houses they were able to protect," he said.

"Many times it depends on where the ember lands. I saw homes that were adjacent to homes that were totally destroyed, without any damage."

In northern California, schools remain closed in Sonoma County, where tens of thousands of homes and businesses are under threat.

Sonoma has been ravaged by the Kincade Fire, which started on Wednesday and has burned through 50,000 acres of land, fanned by the winds.

The Kincade Fire began seven minutes after a nearby power line was damaged, and power lines may have started fires according to reports, but PG&E has not yet confirmed if the power glitch started the blaze.

About 180,000 people have been ordered to evacuate, with roads around Santa Rosa north of San Francisco packed with cars as people tried to flee.

There are fears the flames could cross the 101 highway and enter areas that have not seen wildfires since the 1940s.

 

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Canada Invests Over $960-Million in Renewable Energy and Grid Modernization Projects

Smart Renewables and Electrification Pathways Program enables clean energy and grid modernization across Canada, funding wind, solar, hydro, geothermal, tidal, and storage to cut GHG emissions and accelerate electrification toward a net-zero economy.

 

Key Points

A $964M Canadian program funding clean power and grid upgrades to cut emissions and build net-zero electrified economy.

✅ Funds wind, solar, hydro, geothermal, tidal, and storage projects

✅ Modernizes grids for reliability, digitalization, and resilience

✅ Supports net-zero by 2050 with Indigenous and utility partners

 

Harnessing Canada's immense clean energy resources requires transformational investments to modernize our electricity grid. The Government of Canada is investing in renewable energy and upgrading the electricity grid, moving toward an electric, connected and clean economy, to make clean, affordable electricity options more accessible in communities across Canada.

The Honourable Seamus O'Regan Jr., Minister of Natural Resources, today launched a $964-million program, alongside a recent federal green electricity contract in Alberta that underscores momentum, to support smart renewable energy and grid modernization projects that will lower emissions by investing in clean energy technologies, like wind, solar, storage, hydro, geothermal and tidal energy across Atlantic Canada.

The Smart Renewables and Electrification Pathways Program (SREPs) supports building Canada's low-emissions energy future and a renewable, electrified economy through projects that focus on non-emitting, cleaner energy technologies, such as storage, and modernizing electricity system operations.

Investing in these technologies reduces greenhouse gas emissions by creating a cleaner, more connected electrical system, supporting progress toward zero-emissions electricity by 2035 goals, while helping Canada reach net-zero emissions by 2050.

Minister O'Regan launched the program during the Canadian Electricity Association's (CEA) virtual regulatory forum on Electricity Regulation & the Four Disruptors – Decarbonization, Decentralization, Digitalization and Democratization, highlighting evolving regulatory approaches as B.C. streamlines clean energy approvals to support deployment nationwide. The launch also coincides with Canadian Environment Week, which celebrates Canada's environmental accomplishments and encourages Canadians to contribute to conserving and protecting the environment.

Through SREPs and other programming, the government is working with provinces and territories, with the Prairie Provinces leading renewable growth in the years ahead, utilities, Indigenous partners and others, including diverse businesses and communities, to deliver these clean and reliable energy initiatives. With Canadian innovation, technology and skilled energy workers, we can provide more communities, households and businesses with an increased supply of clean electricity and a cleaner electrical grid.

To help interested stakeholders find information on SREPs, a new webpage has been launched, which includes a comprehensive guide for eligible projects.

This supports Canada's strengthened climate plan, A Healthy Environment and a Healthy Economy. Canada is advancing projects that support the clean grid of the future and seize opportunities in the global electricity market to boost competitiveness. Collectively with investments from the Fall Economic Statement 2020 and Budget 2021, Canada will achieve our climate change commitments and ensure a healthier environment and more prosperous economy for future generations.

 

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The Impact of AI on Corporate Electricity Bills

AI Energy Consumption strains corporate electricity bills as data centers and HPC workloads run nonstop, driving carbon emissions. Efficiency upgrades, renewable energy, and algorithm optimization help control costs and enhance sustainability across industries.

 

Key Points

AI Energy Consumption is the power used by AI compute and data centers, impacting costs and sustainability.

✅ Optimize cooling, hardware, and workloads to cut kWh per inference

✅ Integrate on-site solar, wind, or PPAs to offset data center power

✅ Tune models and algorithms to reduce compute and latency

 

Artificial Intelligence (AI) is revolutionizing industries with its promise of increased efficiency and productivity. However, as businesses integrate AI technologies into their operations, there's a significant and often overlooked impact: the strain on corporate electricity bills.

AI's Growing Energy Demand

The adoption of AI entails the deployment of high-performance computing systems, data centers, and sophisticated algorithms that require substantial energy consumption. These systems operate around the clock, processing massive amounts of data and performing complex computations, and, much like the impact on utilities seen with major EV rollouts, contributing to a notable increase in electricity usage for businesses.

Industries Affected

Various sectors, including finance, healthcare, manufacturing, and technology, rely on AI-driven applications for tasks ranging from data analysis and predictive modeling to customer service automation and supply chain optimization, while manufacturing is influenced by ongoing electric motor market growth that increases electrified processes.

Cost Implications

The rise in electricity consumption due to AI deployments translates into higher operational costs for businesses. Corporate entities must budget accordingly for increased electricity bills, which can impact profit margins and financial planning, especially in regions experiencing electricity price volatility in Europe amid market reforms. Managing these costs effectively becomes crucial to maintaining competitiveness and sustainability in the marketplace.

Sustainability Challenges

The environmental impact of heightened electricity consumption cannot be overlooked. Increased energy demand from AI technologies contributes to carbon emissions and environmental footprints, alongside rising e-mobility demand forecasts that pressure grids, posing challenges for businesses striving to meet sustainability goals and regulatory requirements.

Mitigation Strategies

To address the escalating electricity bills associated with AI, businesses are exploring various mitigation strategies:

  1. Energy Efficiency Measures: Implementing energy-efficient practices, such as optimizing data center cooling systems, upgrading to energy-efficient hardware, and adopting smart energy management solutions, can help reduce electricity consumption.

  2. Renewable Energy Integration: Investing in renewable energy sources like solar or wind power and energy storage solutions to enhance flexibility can offset electricity costs and align with corporate sustainability initiatives.

  3. Algorithm Optimization: Fine-tuning AI algorithms to improve computational efficiency and reduce processing times can lower energy demands without compromising performance.

  4. Cost-Benefit Analysis: Conducting thorough cost-benefit analyses of AI deployments to assess energy consumption against operational benefits and potential rate impacts, informed by cases where EV adoption can benefit customers in broader electricity markets, helps businesses make informed decisions and prioritize energy-saving initiatives.

Future Outlook

As AI continues to evolve and permeate more aspects of business operations, the demand for electricity will likely intensify and may coincide with broader EV demand projections that increase grid loads. Balancing the benefits of AI-driven innovation with the challenges of increased energy consumption requires proactive energy management strategies and investments in sustainable technologies.

Conclusion

The integration of AI technologies presents significant opportunities for businesses to enhance productivity and competitiveness. However, the corresponding surge in electricity bills underscores the importance of proactive energy management and sustainability practices. By adopting energy-efficient measures, leveraging renewable energy sources, and optimizing AI deployments, businesses can mitigate cost impacts, reduce environmental footprints, and foster long-term operational resilience in an increasingly AI-driven economy.

 

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