Huge solar plant in the works

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The largest solar electric generating plant in the United States could be built in Arizona under a plan announced recently by six Southwest energy suppliers. The multistate consortium said it has issued a request for proposals to construct a concentrating solar power plant that would use the heat of the sun to generate clean electricity for Southwest consumers.

The plant is envisioned to produce 250 megawatts of electricity, which would be enough to serve 75,000 Arizona homes, according to Arizona Public Service, one of the partners in the project.

The other partners are Salt River Project, Arizona Electric Power Cooperative, Tucson Electric Power, Southern California Public Power Authority and Xcel Energy.

The largest single solar plant in the U.S. is in the Mohave Desert and produces 160 megawatts. It is part of a system of solar fields built in the 1980s that produces 354 megawatts.

That's many times larger than current solar power plants in Arizona. Tucson Electric Power operates a plant in Springerville with a capacity of 4.6 megawatts while APS operates a one-megawatt concentrating solar power plant in Red Rock.

The largest single solar plant in the U.S. is in the Mohave Desert and produces 160 megawatts. It is part of a system of solar fields built in the 1980s that produces 354 megawatts. The largest recent solar plant is a 64-megawatt installation that opened earlier this year in Boulder City, Nevada.

Several solar plants with capacities up to 900 megawatts are contemplated in California but are not yet under construction.

By comparison, large nuclear or coal-fired power plants typically produce about 1,000 megawatts.

The partners are interested in developing the new plant because it would use the latest technology that may greatly reduce the cost of solar electricity, said Lori Singleton, manager of sustainability initiatives for Salt River Project, another partner.

Solar electricity still costs three to four times more than power produced from conventional plants, but the new technology and economies of scale could make the proposed plant more competitive, she said.

Singleton did not estimate the cost of the plant, but the new Nevada plant cost a reported $250 million and covers 350 acres.

Singleton said the consortium's proposed solar farm might occupy four times that amount of land.

Consortium members hope to select the winning bidder by June, with operation anticipated to start by the end of 2012.

Singleton said the new plant is not expected to have an impact on electricity rates because SRP and other utilities already collect surcharges on customers' monthly bills to cover the added cost of renewable energy. She also said surveys show solar energy is strongly supported by SRP customers.

"They believe solar is the technology where we should be investing their money, based on the fact they see it as an abundant resource for the state," she said.

Under the program, the plant would be built and operated by an independent developer, and the six utilities would sign purchase power agreements to buy the electricity, giving the operator a guaranteed market. In addition to APS and SRP, the consortium includes the Arizona Electric Power Cooperative, Tucson Electric Power, Southern California Public Power Authority and Xcel Energy.

Three types of concentrating designs are possible. APS' Red Rock plant uses a series of mirrored troughs to focus sunlight on fluid that is used to create steam to generate electricity. Other technologies use large dishes or power towers surrounded by mirrors to focus the sunlight. Singleton said the new plant would most likely be located along existing power lines in Arizona or Nevada.

Arizona utilities have received a mandate from the Arizona Corporation Commission to obtain 15 percent of their electricity from renewable sources like solar and wind power by 2025.Commissioner Kris Mayes praised the project, calling it "very good news for Arizona."

She added the commission's mandate has laid the groundwork to make the state a leader in renewable energy.

"I am hopeful that this project will ultimately be located in Arizona, as it will bring good jobs and revenue to local communities," Mayes said. "Arizona's abundant sunshine and geography make it ideal for a CSP (concentrating solar power) project."

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Ontario Sets Electricity Rates at Off-Peak Price until February 7

Ontario Off-Peak Electricity Rate offers 8.2 cents per kWh for 24 hours, supporting Time-of-Use and Tiered Regulated Price Plan customers, including residential, small business, and farms, under Ontario Energy Board guidelines during temporary relief.

 

Key Points

A temporary 8.2 cents per kWh all-day price for RPP customers, covering TOU and Tiered users across Ontario.

✅ Applies 24 hours daily at 8.2 cents per kWh for 21 days

✅ Covers residential, small business, and farm RPP customers

✅ Valid for TOU and Tiered plans set by the Ontario Energy Board

 

 The Ontario government has announced electricity relief with electricity prices set at the off-peak price of 8.2 cents per kilowatt-hour, 24 hours per day for 21 days starting January 18, 2022, until the end of day February 7, 2022, for all Regulated Price Plan customers. The off-peak rate will apply automatically to residential, small businesses and farms who pay Time-of-Use or Tiered prices set by the Ontario Energy Board.

This rate relief includes extended off-peak rates to support small businesses, as well as workers and families spending more time at home while the province is in Modified Step Two of the Roadmap to Reopen.

As part of our mandate, we set the rates that your utility charges for the electricity you use in your home or small business. These rates appear on the Electricity line of your bill, and we administer protections such as disconnection moratoriums for residential customers. We also set the Delivery rates that cover the cost to deliver electricity to most residential and small business customers.

 

Types of electricity rates

For residential and small business customers that buy electricity from their utility, there are two different types of rates (also called prices here), and Ontario also provides stable electricity pricing for larger users. The Ontario Energy Board sets both once a year on November 1:

Time-of-Use (TOU)

With TOU prices, the price depends on when you use electricity, including options like ultra-low overnight pricing that encourage off-peak use.

There are three TOU price periods:

  • Off-peak, when demand for electricity is lowest and new offerings like the Ultra-Low Overnight plan can encourage shifting usage. Ontario households use most of their electricity – nearly two thirds of it – during off-peak hours.
  • Mid-peak, when demand for electricity is moderate. These periods are during the daytime, but not the busiest times of day, and utilities like BC Hydro are exploring similar TOU structures as well.
  • On-peak, when demand for electricity is generally higher. These are the busier times of day – generally when people are cooking, starting up their computers and running heaters or air conditioners.

 

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Bitcoin consumes 'More electricity than Argentina' - Cambridge

Bitcoin energy consumption is driven by mining electricity demand, with TWh-scale power use, carbon footprint concerns, and Cambridge estimates. Rising prices incentivize more hardware; efficiency gains and renewables adoption shape sustainability outcomes.

 

Key Points

Bitcoin energy consumption is mining's electricity use, driven by price, device efficiency, and energy mix.

✅ Cambridge tool estimates ~121 TWh annual usage

✅ Rising BTC price incentivizes more mining hardware

✅ Efficiency, renewables, and costs shape footprint

 

"Mining" for the cryptocurrency is power-hungry, with power curtailments reported during heat waves, involving heavy computer calculations to verify transactions.

Cambridge researchers say it consumes around 121.36 terawatt-hours (TWh) a year - and is unlikely to fall unless the value of the currency slumps, even as Americans use less electricity overall.

Critics say electric-car firm Tesla's decision to invest heavily in Bitcoin undermines its environmental image.

The currency's value hit a record $48,000 (£34,820) this week. following Tesla's announcement that it had bought about $1.5bn bitcoin and planned to accept it as payment in future.

But the rising price offers even more incentive to Bitcoin miners to run more and more machines.

And as the price increases, so does the energy consumption, according to Michel Rauchs, researcher at The Cambridge Centre for Alternative Finance, who co-created the online tool that generates these estimates.

“It is really by design that Bitcoin consumes that much electricity,” Mr Rauchs told BBC’s Tech Tent podcast. “This is not something that will change in the future unless the Bitcoin price is going to significantly go down."

The online tool has ranked Bitcoin’s electricity consumption above Argentina (121 TWh), the Netherlands (108.8 TWh) and the United Arab Emirates (113.20 TWh) - and it is gradually creeping up on Norway (122.20 TWh).

The energy it uses could power all kettles used in the UK, where low-carbon generation stalled in 2019, for 27 years, it said.

However, it also suggests the amount of electricity consumed every year by always-on but inactive home devices in the US alone could power the entire Bitcoin network for a year, and in Canada, B.C. power imports have helped meet demand.

Mining Bitcoin
In order to "mine" Bitcoin, computers - often specialised ones - are connected to the cryptocurrency network.

They have the job of verifying transactions made by people who send or receive Bitcoin.

This process involves solving puzzles, which, while not integral to verifying movements of the currency, provide a hurdle to ensure no-one fraudulently edits the global record of all transactions.

As a reward, miners occasionally receive small amounts of Bitcoin in what is often likened to a lottery.

To increase profits, people often connect large numbers of miners to the network - even entire warehouses full of them, as seen with a Medicine Hat bitcoin operation backed by an electricity deal.

That uses lots of electricity because the computers are more or less constantly working to complete the puzzles, prompting some utilities to consider pauses on new crypto loads in certain regions.

The University of Cambridge tool models the economic lifetime of the world's Bitcoin miners and assumes that all the Bitcoin mining machines worldwide are working with various efficiencies.

Using an average electricity price per kilowatt hour ($0.05) and the energy demands of the Bitcoin network, it is then possible to estimate how much electricity is being consumed at any one time, though in places like China's power sector data can be opaque.
 

 

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Australia to head huge electricity and internet project in PNG

Australia-PNG Infrastructure Rollout delivers electricity and broadband expansion across PNG, backed by New Zealand, the US, Japan, and South Korea, enhancing telecom capacity, digital connectivity, and regional development ahead of the APEC summit.

 

Key Points

A multi-billion-dollar plan to expand power and broadband in PNG, covering 70% of users with allied support.

✅ Delivers internet to 70% of PNG households and communities

✅ Expands electricity grid, boosting reliability and access

✅ Backed by NZ, US, Japan, and S. Korea; complements APEC investments

 

Australia will lead a new multi-billion-dollar electricity and internet rollout in Papua New Guinea, with the PM rules out taxpayer-funded power plants stance underscoring its approach to energy policy.

The Australian newspaper reported New Zealand, the US, Japan, whose utilities' offshore wind deal in the UK signaled expanding energy interests, and South Korea are supporting the project, which will be PNG's largest ever development investment.

The project will deliver internet to 70 percent of PNG and improve access to power, even as clean energy investment in developing nations has slipped sharply, according to a recent report.

Both China and the US are also expected to announce new investments in the region at the APEC summit this week, and recent China-Cambodia nuclear energy cooperation underscores those energy ties.

Beijing will announce new mining and energy investments in PNG, echoing projects such as the Chinese-built electricity poles plant in South Sudan, and two Confucius Insitutes to be housed at PNG universities.

 

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Nearly $1 Trillion in Investments Estimated by 2030 as Power Sector Transitions to a More Decarbonized and Flexible System

Distributed Energy Resources (DER) are surging as solar PV, battery storage, and demand response decarbonize power, cut costs, and boost grid resilience for utilities, ESCOs, and C&I customers through 2030.

 

Key Points

DER are small-scale, grid-connected assets like solar PV, storage, and demand response that deliver flexible power.

✅ Investments in DER to rise 75% by 2030; $846B in assets, $285B in storage.

✅ Residential solar PV: 49.3% of spend; C&I solar PV: 38.9% by 2030.

✅ Drivers: favorable policy, falling costs, high demand charges, decarbonization.

 

Frost & Sullivan's recent analysis, Growth Opportunities in Distributed Energy, Forecast to 2030, finds that the rate of annual investment in distributed energy resources (DER) will increase by 75% by 2030, with the market set for a decade of high growth. Favorable regulations, declining project and technology costs, and high electricity and demand charges are key factors driving investments in DER across the globe, with rising European demand boosting US solar equipment makers prospects in export markets. The COVID-19 pandemic will reduce investment levels in the short term, but the market will recover. Throughout the decade, $846 billion will be invested in DER, supported by a further $285 billion that will be invested in battery storage, with record solar and storage growth anticipated as installations and investments accelerate.

"The DER business model will play an increasingly pivotal role in the global power mix, as highlighted by BNEF's 2050 outlook and as part of a wider effort to decarbonize the sector," said Maria Benintende, Senior Energy Analyst at Frost & Sullivan. "Additionally, solar photovoltaic (PV) will dominate throughout the decade. Residential solar PV will account for 49.3% of total investment ($419 billion), though policy moves like a potential Solar ITC extension could pressure the US wind market, with commercial and industrial solar PV accounting for a further 38.9% ($330 billion)."

Benintende added: "In developing economies, DER offers a chance to bridge the electricity supply gap that still exists in a number of country markets. Further, in developed markets, DER is a key part of the transition to a cleaner and more resilient energy system, consistent with IRENA's renewables decarbonization findings across the energy sector."

DER offers significant revenue growth prospects for all key market participants, including:

  • Technology original equipment manufacturers (OEMs): Offer flexible after-sales support, including digital solutions such as asset integrity and optimization services for their installed base.
  • System integrators and installers: Target household customers and provide efficient and trustworthy solutions with flexible financial models.
  • Energy service companies (ESCOs): ESCOs should focus on adding DER deployments, in line with US decarbonization pathways and policy goals, to expand and enhance their traditional role of providing energy savings and demand-side management services to customers.

Utility companies: Deployment of DER can create new revenue streams for utility companies, from real-time and flexibility markets, and rapid solar PV growth in China illustrates how momentum in renewables can shape utility strategies.
Growth Opportunities in Distributed Energy, Forecast to 2030 is the latest addition to Frost & Sullivan's Energy and Environment research and analyses available through the Frost & Sullivan Leadership Council, which helps organizations identify a continuous flow of growth opportunities to succeed in an unpredictable future.

 

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Duke solar solicitation nearly 6x over-subscribed

Duke Energy Carolinas Solar RFP draws 3.9 GW of utility-scale bids, oversubscribed in DEP and DEC, below avoided cost rates, minimal battery storage, strict PPA terms, and interconnection challenges across North and South Carolina.

 

Key Points

Utility-scale solar procurement in DEC and DEP, evaluated against avoided cost, with few storage bids and PPA terms.

✅ 3.9 GW bids for 680 MW; DEP most oversubscribed

✅ Most projects 7-80 MWac; few include battery storage

✅ Bids must price below 20-year avoided cost estimate

 

Last week the independent administrator for Duke’s 680 MW solar solicitation revealed data about the projects which have bid in response to the offer, showing a massive amount of interest in the opportunity.

Overall, 18 individuals submitted bids for projects in Duke Energy Carolinas (DEC) territory and 10 in Duke Energy Progress (DEP), with a total of more than 3.9 GW of proposals – more nearly 6x the available volume. DEP was relatively more over-subscribed, with 1.2 GWac of projects vying for only 80 MW of available capacity.

This is despite a requirement that such projects come in below the estimate of Duke’s avoided cost for the next 20 years, and amid changes in solar compensation that could affect project economics. Individual projects varied in capacity from 7-80 MWac, with most coming within the upper portion of that range.

These bids will be evaluated in the spring of 2019, and as Duke Energy Renewables continues to expand its portfolio, Duke Energy Communications Manager Randy Wheeless says he expects the plants to come online in a year or two.

 

Lack of storage

Despite recent trends in affordable batteries, of the 78 bids that came in only four included integrated battery storage. Tyler Norris, Cypress Creek Renewables’ market lead for North Carolina, says that this reflects that the methodology used is not properly valuing storage.

“The lack of storage in these bids is a missed opportunity for the state, and it reflects a poorly designed avoided cost rate structure that improperly values storage resources, commercially unreasonable PPA provisions, and unfavorable interconnection treatment toward independent storage,” Norris told pv magazine.

“We’re hopeful that these issues will be addressed in the second RFP tranche and in the current regulatory proceedings on avoided cost and state interconnection standards and grid upgrades across the region.”

 

Limited volume for North Carolina?

Another curious feature of the bids is that nearly the same volume of solar has been proposed for South Carolina as North Carolina – despite this solicitation being in response to a North Carolina law and ongoing legal disputes such as a church solar case that challenged the state’s monopoly model.

 

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Pickering nuclear station is closing as planned, despite calls for refurbishment

Ontario Pickering Nuclear Closure will shift supply to natural gas, raising emissions as the electricity grid manages nuclear refurbishment, IESO planning, clean power imports, and new wind, solar, and storage to support electrification.

 

Key Points

Ontario will close Pickering and rely on natural gas, increasing emissions while other nuclear units are refurbished.

✅ 14% of Ontario electricity supplied by Pickering now

✅ Natural gas use rises; grid emissions projected up 375%

✅ IESO warns gas phaseout by 2030 risks blackouts, costs

 

The Ontario government will not reconsider plans to close the Pickering nuclear station and instead stop-gap the consequent electricity shortfall with natural gas-generated power in a move that will, as an analysis of Ontario's grid shows, hike the province’s greenhouse gas emissions substantially in the coming years.

In a report released this week, a nuclear advocacy group urged Ontario to refurbish the aging facility east of Toronto, which is set to be shuttered in phases in 2024 and 2025, prompting debate over a clean energy plan after Pickering as the closure nears. The closure of Pickering, which provides 14 per cent of the province’s annual electricity supply, comes at the same time as Ontario’s other two nuclear stations are undergoing refurbishment and operating at reduced capacity.

Canadians for Nuclear Energy, which is largely funded by power workers' unions, argued closing the 50-year-old facility will result in job losses, emissions increases, heightened reliance on imported natural gas and an electricity supply gap across Ontario.

But Palmer Lockridge, spokesperson for the provincial energy minister, said further extending Pickering’s lifespan isn’t on the table.

“As previously announced in 2020, our government is supporting Ontario Power Generation’s plan to safely extend the life of the Pickering Nuclear Generating Station through the end of 2025,” said Lockridge in an emailed response to questions.

“Going forward, we are ensuring a reliable, affordable and clean electricity system for decades to come. That’s why we put a plan in place that ensures we are prepared for the emerging energy needs following the closure of Pickering, and as a result of our government’s success in growing and electrifying the province’s economy.”

The Progressive Conservative government under Premier Doug Ford has invested heavily in electrification, sinking billions into electric vehicle and battery manufacturing and industries like steel-making to retool plants to run on electricity rather than coal, and exploring new large-scale nuclear plants to bolster baseload supply.

Natural gas now provides about seven per cent of the province’s energy, a piece of the pie that will rise significantly as nuclear energy dwindles. Emissions from Ontario’s electricity grid, which is currently one of the world’s cleanest with 94 per cent zero-emission power generation, are projected to rise a whopping 375 per cent as the province turns increasingly to natural gas generation. Those increases will effectively undo a third of the hard-won emissions reductions the province achieved by phasing out coal-fired power generation.

The Independent Electricity System Operator (IESO), which manages Ontario’s grid, studied whether the province could phase out natural gas generation by 2030 and concluded that “would result in blackouts and hinder electrification” and increase average residential electricity costs by $100 per month.

The Ontario Clean Air Alliance, however, obtained draft documents from the electricity operator that showed it had studied, but not released publicly, other scenarios that involved phasing out natural gas without energy shortfalls, price hikes or increases in emissions.

The Ontario government will not reconsider plans to close the Pickering nuclear station and instead stop-gap the consequent electricity shortfall facing Ontario with natural gas-generated power in a move that will hike the province’s greenhouse gas emissions.

One model suggested increasing carbon taxes and imports of clean energy from other provinces could keep blackouts, costs and emissions at bay, while another involved increasing energy efficiency, wind generation and storage.

“By banning gas-fired electricity exports to the U.S., importing all the Quebec water power we can with the existing transmission lines and investing in energy efficiency and wind and solar and storage — do all those things and you can phase out gas-fired power and lower our bills,” said Jack Gibbons, chair of the Ontario Clean Air Alliance.

The IESO has argued in response that the study of those scenarios was not complete and did not include many of the challenges associated with phasing out natural gas plants.

Ontario Energy Minister Todd Smith asked the IESO to develop “an achievable pathway to zero-emissions in the electricity sector and evaluate a moratorium on new-build natural gas generation stations,” said his spokesperson. That report, an early look at halting gas power, is expected in November.

 

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