Over 1 million Energy Star homes built in U.S.

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Over a million homes in the United States have now been given the Energy Star label, with a large chunk being located in Texas.

Those areas with the greatest numbers are located in Houston, Texas (144,000); Dallas-Fort Worth, Texas (103,000); and Las Vegas, Nevada (80,000).

“This is an amazing achievement for the Energy Star program – but the real winners are the 1 million American families who have the chance to save money and keep harmful pollution out of the air. That’s great news for anyone who wants to cut costs and protect our planet,” said EPA Administrator Lisa P. Jackson.

“We’re going to keep the number of Energy Star homes growing, because every new Energy Star home is a step towards lower costs, cleaner air, and communities that are environmentally and economically sustainable. We’re giving everyday American homebuyers the power to lower their bills and join the fight against climate change.”

The Energy Star program is arguably the best-known energy efficiency program to consumers worldwide. It was first introduced by the United States Environmental Protection Agency in 1992, but has been since been adopted by Australia, Canada, Japan, New Zealand, Taiwan and the European Union as well.

Most people think of computers and appliances when Energy Star is mentioned, but the program has been labeling homes built in the United States since 1995. An Energy Star home uses at least 15% less energy than standard homes built to the 2004 International Residential Code (IRC), but may be even more efficient depending on the materials and design. The majority of Energy Star homes are 20%-30% more efficient than the typical home.

In order to earn the Energy Star label, a home must meet multiple energy efficiency guidelines established by the EPA. Builders typically use high performance insulation, multiple-paned windows, tight construction and ducting, and energy efficient cooling and heating systems to meet these guidelines. Energy Star qualified lighting and appliances may also be installed by builders.

Although the type of materials used are important, proper installation is critical for energy efficiency. An independent home energy rater is required to conduct onsite testing and inspections to verify that the homeÂ’s performance meets Energy Star requirements.

Any home or dwelling that is three stories or less can earn the Energy Star label once it has been verified to meet the standards of the EPA. Besides the typical detached house, multi-family homes, pre-manufactured homes, systems-built homes using modular construction, log homes, and concrete homes have all been given Energy Star labeling.

Retrofitting existing homes has also become very popular as homeowners try to save money on heating, cooling and electricity. Although most of the costs are borne upfront, the increased efficiency of the upgrades can pay the cost back many times over the long-term. Many homeowners also try for Energy Star certification before selling their home, as it helps to raise the value of their house.

Electricity and heating used in homes often comes from the burning of fossil fuels, whether at the home or from more distant coal-fired power plants. This can create smog, acid rain, and raise the risks of global warming.

The EPA estimates that the Energy Star program will help save homeowners more than $270 million this year on their utility bills, while avoiding greenhouse gas emissions equivalent to those from 370,000 vehicles. Since inception, the Energy Star program has saved Americans more than $1.2 billion on their energy bills, and reduced greenhouse gas emissions by 22 billion pounds.

There are more than 6,500 builders across the nation currently building homes that earn the Energy Star label. Qualified new homes can be found in every state within the United States.

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RBC agrees to buy electricity from new southern Alberta solar power farm project

RBC Renewable Energy PPA supports a 39 MW Alberta solar project, with Bullfrog Power and BluEarth Renewables, advancing clean energy in a deregulated market through a long-term power purchase agreement in Canada today.

 

Key Points

A long-term power purchase agreement where RBC buys most output from a 39 MW Alberta solar project via Bullfrog Power.

✅ 39 MW solar build in County of Forty Mile, Alberta

✅ Majority of output purchased by RBC via Bullfrog Power

✅ Supports cost-competitive renewables in deregulated market

 

The Royal Bank of Canada says it is the first Canadian bank to sign a long-term renewable energy power purchase agreement, a deal that will support the development of a 39-megawatt, $70-million solar project in southern Alberta, within an energy powerhouse province.

The bank has agreed with green energy retailer Bullfrog Power to buy the majority of the electricity produced by the project, as a recent federal green electricity contract highlights growing demand, to be designed and built by BluEarth Renewables of Calgary.

The project is to provide enough power for over 6,400 homes and the panel installations will cover 120 hectares, amid a provincial renewable energy surge that could create thousands of jobs, the size of 170 soccer fields.

The solar installation is to be built in the County of Forty Mile, a hot spot for renewable power that was also chosen by Suncor Energy Inc. for its $300-million 200-MW wind power project (approved last year and then put on hold during the COVID-19 pandemic), and home to another planned wind power farm in Alberta.

BluEarth says commercial operations at its Burdett and Yellow Lake Solar Project are expected to start up in April 2021, underscoring solar power growth in the province.

READ MORE: Wind power developers upbeat about Alberta despite end of power project auctions

It says the agreement shows that renewable energy can be cost-competitive, with lower-cost solar contracts in a deregulated electricity market like Alberta’s, adding the province has some of the best solar and wind resources in Canada.

“We’re proud to be the first Canadian bank to sign a long-term renewable energy power purchase agreement, demonstrating our commitment to clean, sustainable power, as Alberta explores selling renewable energy at scale,” said Scott Foster, senior vice-president and global head of corporate real estate at RBC.

 

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B.C.'s Green Energy Ambitions Face Power Supply Challenges

British Columbia Green Grid Constraints underscore BC Hydro's rising imports, peak demand, electrification, hydroelectric variability, and transmission bottlenecks, challenging renewable energy expansion, energy security, and CleanBC targets across industry and zero-emission transportation.

 

Key Points

They are capacity and supply limits straining B.C.'s clean electrification, driving imports and risking reliability.

✅ Record 25% imports in FY2024 raise emissions and costs

✅ Peak demand and transmission limits delay new connections

✅ Drought reduces hydro output; diversified generation needed

 

British Columbia's ambitious green energy initiatives are encountering significant hurdles due to a strained electrical grid and increasing demand, with a EV demand bottleneck adding pressure. The province's commitment to reducing carbon emissions and transitioning to renewable energy sources is being tested by the limitations of its current power infrastructure.

Rising Demand and Dwindling Supply

In recent years, B.C. has experienced a surge in electricity demand, driven by factors such as population growth, increased use of electric vehicles, and the electrification of industrial processes. However, the province's power supply has struggled to keep pace, and one study projects B.C. would need to at least double its power output to electrify all road vehicles. In fiscal year 2024, BC Hydro imported a record 13,600 gigawatt hours of electricity, accounting for 25% of the province's total consumption. This reliance on external sources, particularly from fossil-fuel-generated power in the U.S. and Alberta, raises concerns about energy security and sustainability.

Infrastructure Limitations

The current electrical grid is facing capacity constraints, especially during peak demand periods, and regional interties such as a proposed Yukon connection are being discussed to improve reliability. A report from the North American Electric Reliability Corporation highlighted that B.C. could be classified as an "at-risk" area for power generation as early as 2026. This assessment underscores the urgency of addressing infrastructure deficiencies to ensure a reliable and resilient energy supply.

Government Initiatives and Investments

In response to these challenges, the provincial government has outlined plans to expand the electrical system. Premier David Eby announced a 10-year, $36-billion investment to enhance the grid's capacity, including grid development and job creation measures to support local economies. The initiative focuses on increasing electrification, upgrading high-voltage transmission lines, refurbishing existing generating facilities, and expanding substations. These efforts aim to meet the growing demand and support the transition to clean energy sources.

The Role of Renewable Energy

Renewable energy sources, particularly hydroelectric power, play a central role in B.C.'s energy strategy. However, the province's reliance on hydroelectricity has its challenges. Drought conditions in recent years have led to reduced water levels in reservoirs, impacting the generation capacity of hydroelectric plants. This variability underscores the need for a diversified energy mix, with options like a hydrogen project complementing hydro, to ensure a stable and reliable power supply.

Balancing Environmental Goals and Energy Needs

B.C.'s commitment to environmental sustainability is evident in its policies, such as the CleanBC initiative, which aims to phase out natural gas heating in new homes by 2030 and achieve 100% zero-emission vehicle sales by 2035, supported by networks like B.C.'s Electric Highway that expand charging access. While these goals are commendable, they place additional pressure on the electrical grid. The increased demand from electric vehicles and electrified heating systems necessitates a corresponding expansion in power generation and distribution infrastructure.

British Columbia's green energy ambitions are commendable and align with global efforts to combat climate change. However, achieving these goals requires a robust and resilient electrical grid capable of meeting the increasing demand for power. The province's reliance on external power sources and the challenges posed by climate variability highlight the need for strategic investments in infrastructure and a diversified energy portfolio, guided by BC Hydro review recommendations to keep electricity affordable. By addressing these challenges proactively, B.C. can pave the way for a sustainable and secure energy future.

 

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WEC Energy Group to buy 80% stake in Illinois wind farm for $345 million

WEC Energy Blooming Grove Investment underscores Midwest renewable energy growth, with Invenergy, GE turbines, and 250 MW wind power capacity, tax credits, PPAs, and utility-scale generation supplying corporate offtakers via long-term contracts.

 

Key Points

It is WEC Energy's $345M purchase of an 80% stake in Invenergy's 250 MW Blooming Grove wind farm in Illinois.

✅ 94 GE turbines; 250 MW utility-scale wind capacity

✅ Output contracted to two multinational offtakers

✅ Eligible for 100% bonus depreciation and wind tax credits

 

WEC Energy Group, the parent company of We Energies, is buying an 80% stake in a wind farm, as seen with projects like Enel's 450 MW wind farm coming online, in McLean County, Illinois, for $345 million.

The wind farm, known as the Blooming Grove Wind Farm, is being developed by Invenergy, which recently completed the largest North American wind build with GE partners, a company based in Chicago that develops wind, solar and other power projects. WEC Energy has invested in several wind farms developed by Invenergy.

With the agreement announced Monday, WEC Energy will have invested more than $1.2 billion in wind farms in the Midwest, echoing heartland investment growth across the region. The power from the wind farms is sold to other utilities or companies, as federal initiatives like DOE wind awards continue to support innovation, and the projects are separate from the investments made by WEC Energy's regulated utilities, such as We Energies, in wind power.

The project, which will consist of 94 wind turbines from General Electric, is expected to be completed this year, similar to recent project operations in the sector, and will have a capacity of 250 megawatts, WEC said in a news release.

Affiliates of two undisclosed multinational companies akin to EDF's offshore investment activity have contracted to take all of the wind farm's output.

The investment is expected to be eligible for 100% bonus depreciation and, as wind economics help illustrate key trends, the tax credits available for wind projects, WEC Energy said.

 

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New Mexico Governor to Sign 100% Clean Electricity Bill ‘As Quickly As Possible’

New Mexico Energy Transition Act advances zero-carbon electricity, mandating public utilities deliver carbon-free electricity by 2045, with renewable targets of 50 percent by 2030 and 80 percent by 2040 to accelerate grid decarbonization.

 

Key Points

A state law requiring utilities to deliver carbon-free electricity by 2045, with 2030 and 2040 renewable targets.

✅ 100 percent carbon-free power from utilities by 2045

✅ Interim renewable targets: 50 percent by 2030, 80 percent by 2040

✅ Aligns with clean energy commitments in HI, CA, and DC

 

The New Mexico House of Representatives passed the Energy Transition Act Tuesday afternoon, sending the carbon-free electricity bill, a move aligned with proposals for a Clean Electricity Standard at the federal level, to Gov. Michelle Lujan Grisham.

Her opinions on it are known: she campaigned on raising the share of renewable energy, a priority echoed in many state renewable ambitions nationwide, and endorsed the ETA in a recent column.

"The governor will sign the bill as quickly as possible — we're hoping it is enrolled and engrossed and sent to her desk by Friday," spokesperson Tripp Stelnicki said in an email Tuesday afternoon.

Once signed, the legislation will commit the state to achieving zero-carbon electricity from public utilities by 2045. The bill also imposes interim renewable energy targets of 50 percent by 2030 and 80 percent by 2040, similar to Minnesota's 2040 carbon-free bill in its timeline.

The Senate passed the bill last week, 32-9. The House passed it 43-22.

The legislation would enter New Mexico into the company of Hawaii, California, where climate risks to grid reliability are shaping policy, and Washington, D.C., which have committed to eliminating carbon emissions from their grids. A dozen other states have proposed similar goals. Meanwhile, the Green New Deal resolution has prompted Congress to discuss the bigger task of decarbonizing the nation overall.

Though grid decarbonization has surged in the news cycle in recent months, even as some states consider moves in the opposite direction, such as a Wyoming bill restricting clean energy that would limit utility choices, New Mexico's bill arose from a years-long effort to rally stakeholders within the state's close-knit political community.

 

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A new approach finds materials that can turn waste heat into electricity

Thermoelectric Materials convert waste heat into electricity via the Seebeck effect; quantum computations and semiconductors accelerate discovery, enabling clean energy, higher efficiency, and scalable heat-to-power conversion from abundant, non-toxic, cost-effective compounds.

 

Key Points

Thermoelectric materials turn waste heat into electricity via the Seebeck effect, improving energy efficiency.

✅ Convert waste heat to electricity via the Seebeck effect

✅ Quantum computations rapidly identify high-performance candidates

✅ Target efficient, low-thermal-conductivity, non-toxic, abundant compounds

 

The need to transition to clean energy is apparent, urgent and inescapable. We must limit Earth’s rising temperature to within 1.5 C to avoid the worst effects of climate change — an especially daunting challenge in the face of the steadily increasing global demand for energy and the need for reliable clean power, with concepts that can generate electricity at night now being explored worldwide.

Part of the answer is using energy more efficiently. More than 72 per cent of all energy produced worldwide is lost in the form of heat, and advances in turning thermal energy into electricity could recover some of it. For example, the engine in a car uses only about 30 per cent of the gasoline it burns to move the car. The remainder is dissipated as heat.

Recovering even a tiny fraction of that lost energy would have a tremendous impact on climate change. Thermoelectric materials, which convert wasted heat into useful electricity, can help, especially as researchers pursue low-cost heat-to-electricity materials for scalable deployment.

Until recently, the identification of these materials had been slow. My colleagues and I have used quantum computations — a computer-based modelling approach to predict materials’ properties — to speed up that process and identify more than 500 thermoelectric materials that could convert excess heat to electricity, and help improve energy efficiency.


Making great strides towards broad applications
The transformation of heat into electrical energy by thermoelectric materials is based on the “Seebeck effect.” In 1826, German physicist Thomas Johann Seebeck observed that exposing the ends of joined pieces of dissimilar metals to different temperatures generated a magnetic field, which was later recognized to be caused by an electric current.

Shortly after his discovery, metallic thermoelectric generators were fabricated to convert heat from gas burners into an electric current. But, as it turned out, metals exhibit only a low Seebeck effect — they are not very efficient at converting heat into electricity.

In 1929, the Russian scientist Abraham Ioffe revolutionized the field of thermoelectricity. He observed that semiconductors — materials whose ability to conduct electricity falls between that of metals (like copper) and insulators (like glass) — exhibit a significantly higher Seebeck effect than metals, boosting thermoelectric efficiency 40-fold, from 0.1 per cent to four per cent.

This discovery led to the development of the first widely used thermoelectric generator, the Russian lamp — a kerosene lamp that heated a thermoelectric material to power a radio.


Are we there yet?
Today, thermoelectric applications range from energy generation in space probes to cooling devices in portable refrigerators, and include emerging thin-film waste-heat harvesters for electronics as well. For example, space explorations are powered by radioisotope thermoelectric generators, converting the heat from naturally decaying plutonium into electricity. In the movie The Martian, for example, a box of plutonium saved the life of the character played by Matt Damon, by keeping him warm on Mars.

In the 2015 film, The Martian, astronaut Mark Watney (Matt Damon) digs up a buried thermoelectric generator to use the power source as a heater.

Despite this vast diversity of applications, wide-scale commercialization of thermoelectric materials is still limited by their low efficiency.

What’s holding them back? Two key factors must be considered: the conductive properties of the materials, and their ability to maintain a temperature difference, as seen in nighttime electricity from cold concepts, which makes it possible to generate electricity.

The best thermoelectric material would have the electronic properties of semiconductors and the poor heat conduction of glass. But this unique combination of properties is not found in naturally occurring materials. We have to engineer them, drawing on advances such as carbon nanotube energy harvesters to guide design choices.

Searching for a needle in a haystack
In the past decade, new strategies to engineer thermoelectric materials have emerged due to an enhanced understanding of their underlying physics. In a recent study in Nature Materials, researchers from Seoul National University, Aachen University and Northwestern University reported they had engineered a material called tin selenide with the highest thermoelectric performance to date, nearly twice that of 20 years ago. But it took them nearly a decade to optimize it.

To speed up the discovery process, my colleagues and I have used quantum calculations to search for new thermoelectric candidates with high efficiencies. We searched a database containing thousands of materials to look for those that would have high electronic qualities and low levels of heat conduction, based on their chemical and physical properties. These insights helped us find the best materials to synthesize and test, and calculate their thermoelectric efficiency.

We are almost at the point where thermoelectric materials can be widely applied, but first we need to develop much more efficient materials. With so many possibilities and variables, finding the way forward is like searching for a tiny needle in an enormous haystack.

Just as a metal detector can zero in on a needle in a haystack, quantum computations can accelerate the discovery of efficient thermoelectric materials. Such calculations can accurately predict electron and heat conduction (including the Seebeck effect) for thousands of materials and unveil the previously hidden and highly complex interactions between those properties, which can influence a material’s efficiency.

Large-scale applications will require themoelectric materials that are inexpensive, non-toxic and abundant. Lead and tellurium are found in today’s thermoelectric materials, but their cost and negative environmental impact make them good targets for replacement.

Quantum calculations can be applied in a way to search for specific sets of materials using parameters such as scarcity, cost and efficiency, and insights can even inform exploratory devices that generate electricity out of thin air in parallel fields. Although those calculations can reveal optimum thermoelectric materials, synthesizing the materials with the desired properties remains a challenge.

A multi-institutional effort involving government-run laboratories and universities in the United States, Canada and Europe has revealed more than 500 previously unexplored materials with high predicted thermoelectric efficiency. My colleagues and I are currently investigating the thermoelectric performance of those materials in experiments, and have already discovered new sources of high thermoelectric efficiency.

Those initial results strongly suggest that further quantum computations can pinpoint the most efficient combinations of materials to make clean energy from wasted heat and the avert the catastrophe that looms over our planet.

 

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Seven small UK energy suppliers must pay renewables fees or risk losing licence

Ofgem Renewables Obligations drive supplier payments for renewables fees, feed-in tariffs, and renewable generation, with non-payment risking supply licences amid the price cap and volatile wholesale prices across the UK energy market.

 

Key Points

Mandatory payments by suppliers funding renewables via feed-in tariffs; non-payment can trigger supply licence revoking.

✅ Covers Renewables Obligation and Feed-in Tariff scheme compliance.

✅ Non-payment can lead to Ofgem action and licence loss.

✅ Affected by price cap and wholesale price volatility.

 

Seven small British energy suppliers owe a total of 34 million pounds ($43.74 million) in renewables fees, amid a renewables backlog that has stalled projects, and could face losing their supply licences if they cannot pay, energy regulator Ofgem reports.

Under Britain’s energy market rules, suppliers of energy must meet so-called renewables obligations and feed-in tariffs, including households' ability to sell solar power back to energy firms, which are imposed on them by the government to help fund renewable power generation.

Several small energy companies have gone bust over the past two years, a trend echoed by findings from a global utility study on renewable priorities, as they struggled to pay the renewables fees and as their profits were affected by a price cap on the most commonly used tariffs and fluctuating wholesale prices, even as a 10 GW contract brings new renewable capacity onto the UK grid.

Ofgem has called on the companies to make necessary payments by Oct. 31, as moves to offer community-generated power to all UK customers progress.

“If they do not pay Ofgem could start the process of revoking their licences to supply energy,” it said in a statement, as offshore wind power continues to scale nationwide.

The seven suppliers are, amid debates over clean energy impacts, Co-Operative Energy Limited; Flow Energy Limited; MA Energy Limited; Nabuh Energy Limited; Robin Hood Energy Limited; Symbio Energy Limited and Tonik Energy Limited. ($1 = 0.7773 pounds)

 

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