Ontario looks to build on electricity deal with Quebec


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Ontario-Quebec Electricity Deal explores hydro imports, terawatt hours, electricity costs, greenhouse gas cuts, and baseload impacts, amid debates on Pickering nuclear operations and competitive procurement in Ontario's long-term energy planning.

 

Key Points

A proposed hydro import deal from Quebec, balancing costs, emissions, and reliability for Ontario electricity customers.

✅ Draft 20-year, 8 TWh offer reported by La Presse disputed

✅ Ontario seeks lower costs and GHG cuts versus alternatives

✅ Not a baseload replacement; Pickering closure not planned

 

Ontario is negotiating a possible energy swap agreement to buy electricity from Quebec, but the government is disputing a published report that it is preparing to sign a deal for enough electricity to power a city the size of Ottawa.

La Presse reported Tuesday that it obtained a copy of a draft, 20-year deal that says Ontario would buy eight terawatt hours a year from Quebec – about 6 per cent of Ontario’s consumption – whether the electricity is consumed or not.

Ontario Energy Minister Glenn Thibeault’s office said the province is in discussions to build on an agreement signed last year for Ontario to import up to two terawatt hours of electricity a year from Quebec.

 

But his office released a letter dated late last month to his Quebec counterpart, in which Mr. Thibeault said the offer extended in June was unacceptable because it would increase the average residential electricity bill by $30 a year.

“I am hopeful that your continued support and efforts will help to further discussions between our jurisdictions that could lead to an agreement that is in the best interest of both Ontario and Quebec,” Mr. Thibeault wrote July 27 to Pierre Arcand.

Ontario would prepare a “term sheet” for the next stage of discussions ahead of the two ministers meeting at the Energy and Mines Ministers Conference later this month in New Brunswick, Mr. Thibeault wrote.

Any future agreements with Quebec will have to provide a reduction in Ontario electricity rates compared with other alternatives and demonstrate measurable reductions in greenhouse gas emissions, he wrote.

Progressive Conservative Leader Patrick Brown said Ontario doesn’t need eight terawatt hours of additional power and suggested it means the Liberal government is considering closing power facilities such as the Pickering nuclear plant early.

A senior Energy Ministry official said that is not on the table. The government has said it intends to keep operating two units at Pickering until 2022, and the other four units until 2024.

Even if the Quebec offer had been accepted, the energy official said, that power wouldn’t have replaced any of Ontario’s baseload power because it couldn’t have been counted on 24 hours a day, 365 days a year.

The Society of Energy Professionals said Mr. Thibeault was right to reject the deal, but called on him to release the Long-Term Energy Plan – which was supposed to be out this spring – before continuing negotiations.

Some commentators have argued for broader reforms to address Ontario's hydro system challenges, urging policymakers to review all options as negotiations proceed.

The Ontario Energy Association said the reported deal would run counter to the government’s stated energy objectives amid concerns over electricity prices in the province.

“Ontarians will not get the benefit of competition to ensure it is the best of all possible options for the province, and companies who have invested in Ontario and have employees here will not get the opportunity to provide alternatives,” president and chief executive Vince Brescia said in a statement. “Competitive processes should be used for any new significant system capacity in Ontario.”

The Association of Power Producers of Ontario said it is concerned the government is even considering deals that would “threaten to undercut a competitive marketplace and long-term planning.”

“Ontario already has a surplus of energy, so it’s very difficult to see how this deal or any other sole-source deal with Quebec could benefit the province and its ratepayers,” association president and CEO David Butters said in a statement.

The Ontario Waterpower Association also said such a deal with Quebec would “present a significant challenge to continued investment in waterpower in Ontario.”

 

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Energy Efficiency and Demand Response Can Nearly Level Southeast Electricity Demand for More than a Decade

Southeast Electricity Demand Forecast examines how energy efficiency, photovoltaics, electric vehicles, heat pumps, and demand response shape grid needs, stabilize load through 2030, shift peaks, and inform utility planning across the region.

 

Key Points

An outlook of load shaped by efficiency, solar, EVs, with demand response keeping usage steady through 2030.

✅ Stabilizes regional demand through 2030 under accelerated adoption

✅ Energy efficiency and demand response are primary levers

✅ EVs and heat pumps drive growth post 2030; shift winter peaks

 

Electricity markets in the Southeast are facing many changes on the customer side of the meter. In a new report released today, we look at how energy efficiency, photovoltaics (solar electricity), electric vehicles, heat pumps, and demand response (shifting loads from periods of high demand) might affect electricity needs in the Southeast.

We find that if all of these resources are pursued on an accelerated basis, electricity demand in the region can be stabilized until about 2030.

After that, demand will likely grow in the following decade because of increased market penetration of electric vehicles and heat pumps, but energy planners will have time to deal with this growth if these projections are borne out. We also find that energy efficiency and demand response can be vital for managing electricity supply and demand in the region and that these resources can help contain energy demand growth, reducing the impact of expensive new generation on consumer wallets.

 

National trends

This is the second ACEEE report looking at regional electricity demand. In 2016, we published a study on electricity consumption in New England, finding an even more pronounced effect. For New England, with even more aggressive pursuit of energy efficiency and these other resources, consumption was projected to decline through about 2030, before rebounding in the following decade.

These regional trends fit into a broader national pattern. In the United States, electricity consumption has been characterized by flat electricity demand for the past decade. Increased energy efficiency efforts have contributed to this lack of consumption growth, even as the US economy has grown since the Great Recession. Recently, the US Energy Information Administration (EIA – a branch of the US Department of Energy) released data on US electricity consumption in 2016, finding that 2016 consumption was 0.3% below 2015 consumption, and other analysts reported a 1% slide in 2023 on milder weather.

 

Five scenarios for the Southeast

ACEEE’s new study focuses on the Southeast because it is very different from New England, with warmer weather, more economic growth, and less-aggressive energy efficiency and distributed energy policies than the Northeast. For the Southeast, we examined five scenarios: a business-as-usual scenario; two alternative scenarios with progressively higher levels of energy efficiency, photovoltaics informed by a solar strategy for the South that is emerging regionally, electric vehicles, heat pumps, and demand response; and two scenarios combining high numbers of electric vehicles and heat pumps with more modest levels of the other resources. This figure presents electricity demand for each of these scenarios:

Over the 2016-2040 period, we project that average annual growth will range from 0.1% to 1.0%, depending on the scenario, much slower than historic growth in the region. Energy efficiency is generally the biggest contributor to changes in projected 2040 electricity consumption relative to the business-as-usual scenario, as shown in the figure below, which presents our accelerated scenario that is based on levels of energy efficiency and other resources now targeted by leading states and utilities in the Southeast.

To date, Entergy Arkansas has achieved the annual efficiency savings as a percent of sales shown in the accelerated scenario and Progress Energy (a division of Duke Energy) has nearly achieved those savings in both North and South Carolina. Sixteen states outside the Southeast have also achieved these savings statewide.

The efficiency savings shown in the aggressive scenario have been proposed by the Arkansas PSC. This level of savings has already been achieved by Arizona as well as six other states. Likewise, the demand response savings we model have been achieved by more than 10 utilities, including four in the Southeast. The levels of photovoltaic, electric vehicle, and heat pump penetration are more speculative and are subject to significant uncertainty.

We also examined trends in summer and winter peak demand. Most utilities in the Southeast have historically had peak demand in the summer, often seeing heatwave-driven surges that stress operations across the Eastern U.S., but our analysis shows that winter peaks will be more likely in the region as photovoltaics and demand response reduce summer peaks and heat pumps increase winter peaks.

 

Why it’s vital to plan broadly

Our analysis illustrates the importance of incorporating energy efficiency, demand response, and photovoltaics into utility planning forecasts as utility trends to watch continue to evolve. Failing to include these resources leads to much higher forecasts, resulting in excess utility system investments, unnecessarily increasing customer electricity rates. Our analysis also illustrates the importance of including electric vehicles and heat pumps in long-term forecasts. While these technologies will have moderate impacts over the next 10 years, they could become increasingly important in the long run.

We are entering a dynamic period of substantial uncertainty for long-term electricity sales and system peaks, highlighted by COVID-19 demand shifts that upended typical patterns. We need to carefully observe and analyze developments in energy efficiency, photovoltaics, electric vehicles, heat pumps, and demand response over the next few years. As these technologies advance, we can create policies to reduce energy bills, system costs, and harmful emissions, drawing on grid reliability strategies tested in Texas, while growing the Southeast’s economy. Resource planners should be sure to incorporate these emerging trends and policies into their long-term forecasts and planning.

 

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German Energy Demand Hits Historic Low Amid Economic Stagnation

Germany Energy Demand Decline reflects economic stagnation, IEA forecasts, and the Energiewende, as industrial output slips and efficiency gains, renewables growth, and cost-cutting reduce fossil fuel use while reshaping sustainability and energy security.

 

Key Points

A projected 7% drop in German energy use driven by industrial slowdown, efficiency gains, and renewables expansion.

✅ IEA projects up to 7% demand drop in the next year

✅ Industrial slowdown and efficiency programs cut consumption

✅ Energiewende shifts mix to wind, solar, and less fossil fuel

 

Germany is on the verge of experiencing a significant decline in energy demand, with forecasts suggesting that usage could hit a record low as the country grapples with economic stagnation. This shift highlights not only the immediate impacts of sluggish economic growth but also broader trends in energy consumption, Europe's electricity markets, sustainability, and the transition to renewable resources.

Recent data indicate that Germany's economy is facing substantial challenges, including high inflation and reduced industrial output. As companies struggle to maintain profitability amid nearly doubled power prices and rising costs, many have begun to cut back on energy consumption. This retrenchment is particularly pronounced in energy-intensive sectors such as manufacturing and chemical production, which are crucial to Germany's export-driven economy.

The International Energy Agency (IEA) has projected that German energy demand could decline by as much as 7% in the coming year, a stark contrast to the trends seen in previous decades. This decline is primarily driven by a combination of factors, including reduced industrial activity, increased energy efficiency measures, and a shift toward alternative energy sources, as well as mounting pressures on local utilities to stay solvent. The current economic landscape has led businesses to prioritize cost-cutting measures, including energy efficiency initiatives aimed at reducing consumption.

In the context of these developments, Germany’s energy transition—known as the "Energiewende"—is becoming increasingly significant. The country has made substantial investments in renewable energy sources such as wind, solar, and biomass in recent years. As energy efficiency improves and the share of renewables in the energy mix rises, traditional fossil fuel consumption has begun to wane. This transition is seen as both a response to climate change and a strategy for energy independence, particularly in light of geopolitical tensions and Europe's wake-up call to ditch fossil fuels across the continent.

However, the current stagnation presents a paradox for the German energy sector. While lower energy demand may ease some pressures on supply and prices, it also raises concerns about the long-term viability of investments in renewable energy infrastructure, even as debates continue over electricity subsidies for industry to support competitiveness. The economic slowdown has the potential to derail progress made in reducing carbon emissions and achieving energy targets, particularly if it leads to decreased investment in green technologies.

Another layer to this issue is the potential impact on employment within the energy sector. As energy demand decreases, there may be a ripple effect on jobs tied to traditional energy production and even in renewable energy sectors if investment slows. Policymakers are now tasked with balancing the immediate need for economic recovery, illustrated by the 200 billion-euro energy price shield, with the longer-term goal of achieving sustainability and energy security.

The effects of the stagnation are also being felt in the residential sector. As households face increased living costs and rising heating and electricity costs, many are becoming more conscious of their energy consumption. Initiatives to improve home energy efficiency, such as better insulation and energy-efficient appliances, are gaining traction among consumers looking to reduce their utility bills. This shift toward energy conservation aligns with broader national goals of reducing overall energy consumption and carbon emissions.

Despite the challenges, there is a silver lining. The current situation offers an opportunity for Germany to reassess its energy strategies and invest in technologies that promote sustainability while also addressing economic concerns. This could include increasing support for research and development in green technologies, enhancing energy efficiency programs, and incentivizing businesses to adopt cleaner energy practices.

Furthermore, Germany’s experience may serve as a case study for other nations grappling with similar issues. As economies around the world face the dual pressures of recovery and sustainability, the lessons learned from Germany’s current energy landscape could inform strategies for balancing these often conflicting priorities.

In conclusion, Germany is poised to witness a historic decline in energy demand as economic stagnation takes hold. While this trend poses challenges for the energy sector and economic growth, it also highlights the importance of sustainability and energy efficiency in shaping the future. As the nation navigates this complex landscape, the focus will need to be on fostering innovation and investment that aligns with both immediate economic needs and long-term environmental goals. The path forward will require a careful balancing act, but with the right strategies, Germany can emerge as a leader in sustainable energy practices even in challenging times.

 

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Hydro One wants to spend another $6-million to redesign bills

Hydro One Bill Redesign Spending sparks debate over Ontario Energy Board regulation, rate applications, privatization, and digital billing upgrades, as surveys cite confusing invoices under the Fair Hydro Plan for residential, commercial, and industrial customers.

 

Key Points

$15M project to simplify Hydro One bills, upgrade systems, and improve digital billing for commercial customers.

✅ $9M spent; $6M proposed for C&I and large-account changes.

✅ OEB to rule amid rate application and privatization scrutiny.

✅ Survey: 40% of customers struggled to understand bills.

 

Ontario's largest and recently privatized electricity utility has spent $9-million to redesign bills and is proposing to spend an additional $6-million on the project.

Hydro One has come under fire for spending since the Liberal government sold more than half of the company, notably for its CEO's $4.5-million pay.

Now, the NDP is raising concerns with the $15-million bill redesign expense contained in a rate application from the formerly public utility.

"I don't think the problem we face is a bill that people can't understand, I think the problem is rates that are too high," said energy critic Peter Tabuns. "Fifteen million dollars seems awfully expensive to me."

But Hydro One says a 2016 survey of its customers indicated about 40 per cent had trouble understanding their bills.

Ferio Pugliese, the company's executive vice-president of customer care and corporate affairs, said the redesign was aimed at giving customers a simpler bill.

"The new format is a format that when tested and put in front of our customers has been designed to give customers the four or five salient items they want to see on their bill," he said.

About $9-million has already gone into redesigning bills, mostly for residential customers, Pugliese said. Cosmetic changes to bills account for about 25 per cent of the cost, with the rest of the money going toward updating information systems and improving digital billing platforms, he said.

The additional $6-million Hydro One is looking to spend would go toward bill changes mostly for its commercial, industrial and large distribution account customers.

Energy Minister Glenn Thibeault noted in a statement that the Ontario Energy Board has yet to decide on the expense, but he suggested he sees the bill redesign as necessary alongside legislation to lower electricity rates introduced by the province.

"With Ontarians wanting clearer bills that are easier to understand, Hydro One's bill redesign project is a necessary improvement that will help customers," he wrote.

"Reductions from the Fair Hydro Plan (the government's 25 per cent cut to bills last year) are important information for both households and businesses, and it's our job to provide clear, helpful answers whenever possible."

The OEB recently ordered Hydro One to lower a rate increase it had been seeking for this year to 0.2 per cent down from 4.8 per cent.

The regulator also rejected a Hydro One proposal to give shareholders all of the tax savings generated by the IPO in 2015 when the Liberal government first began partially privatizing the utility. The OEB instead mandated shareholders receive 62 per cent of the savings while ratepayers receive the remaining 38 per cent.

 

 

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Russia to Ban Bitcoin Mining Amid Electricity Deficit

Russia Bitcoin Mining Ban highlights electricity deficits, grid stability concerns, and sustainability challenges, prompting stricter cryptocurrency regulation as mining operations in Siberia face shutdowns, relocations, and renewed focus on energy efficiency and resource allocation.

 

Key Points

Policy halting Bitcoin mining in key regions to ease electricity deficits, stabilize the grid, and prioritize energy.

✅ Targets high-load regions like Siberia facing electricity deficits

✅ Protects residential and industrial energy security, limits outages

✅ Prompts miner relocations, regulation, and potential renewables

 

In a significant shift in its stance on cryptocurrency, Russia has announced plans to ban Bitcoin mining in several key regions, primarily due to rising electricity deficits. This move highlights the ongoing tensions between energy management and the growing demand for cryptocurrency mining, which has sparked a robust debate about sustainability and resource allocation in the country.

Background on Bitcoin Mining in Russia

Russia has long been a major player in the global cryptocurrency landscape, particularly in Bitcoin mining. The country’s vast and diverse geography offers ample opportunities for mining, with several regions boasting low electricity costs and cooler climates that are conducive to operating the high-powered computers used for mining, similar to Iceland's mining boom in cold regions.

However, the boom in mining activities has put a strain on local electricity grids, as seen with BC Hydro suspensions in Canada, particularly as demand for energy continues to rise. This situation has become increasingly untenable, leading government officials to reconsider the viability of allowing large-scale mining operations.

Reasons for the Ban

The decision to ban Bitcoin mining in certain regions stems from a growing electricity deficit that has been exacerbated by both rising temperatures and increased energy consumption. Reports indicate that some regions are struggling to meet domestic energy needs, and jurisdictions like Manitoba's pause on crypto connections reflect similar grid concerns, particularly during peak consumption periods. Officials have expressed concern that continuing to support cryptocurrency mining could lead to blackouts and further strain on the electrical infrastructure.

Additionally, this ban is seen as a measure to redirect energy resources toward more critical sectors, including residential heating and industrial needs. By curbing Bitcoin mining, the government aims to prioritize the energy security of its citizens and maintain stability within its energy markets and the wider global electricity market dynamics.

Regional Impact

The regions targeted by the ban include areas that have seen a significant influx of mining operations, often attracted by the low costs of electricity. For instance, Siberia, known for its abundant natural resources and inexpensive power, has become a major center for miners. The ban is likely to have profound implications for local economies that have come to rely on the influx of investments from cryptocurrency companies.

Many miners are expected to be affected financially as they may have to halt operations or relocate to regions with more favorable regulations. This could lead to job losses and a decline in local business activities that have sprung up around the mining industry, such as hardware suppliers and tech services.

Broader Implications for Cryptocurrency in Russia

This ban reflects a broader trend within Russia’s approach to cryptocurrencies. While the government has been cautious about outright banning digital currencies, it has simultaneously sought to regulate the industry more stringently. Recent legislation has aimed to establish a legal framework for cryptocurrencies, focusing on taxation and oversight while navigating the balance between innovation and regulation.

As other countries around the world grapple with the implications of cryptocurrency mining, Russia’s decision adds to the narrative of the challenges associated with energy consumption in this sector. The international community is increasingly aware of the environmental impact of Bitcoin mining, which has come under fire for its significant energy use and carbon footprint.

Future of Mining in Russia

Looking ahead, the future of Bitcoin mining in Russia remains uncertain. While some regions may implement strict bans, others could potentially embrace a more regulated approach to mining, provided it aligns with energy availability and environmental considerations. The country’s vast landscape offers opportunities for innovative solutions, such as utilizing renewable energy sources, even as India's solar growth slows amid rising coal generation, to power mining operations.

As global attitudes toward cryptocurrency evolve, Russia will likely continue to adapt its policies in response to both domestic energy needs and international pressures, including Europe's shift away from Russian energy that influence policy choices. The balance between fostering a competitive cryptocurrency market and ensuring energy sustainability will be a key challenge for Russian policymakers moving forward.

Russia’s decision to ban Bitcoin mining in key regions marks a pivotal moment in the intersection of cryptocurrency and energy management. As the nation navigates its energy deficits, the implications for the mining industry and the broader cryptocurrency landscape will be significant. This move not only underscores the need for responsible energy consumption in the digital age but also reflects the complexities of integrating emerging technologies within existing frameworks of governance and infrastructure. As the situation unfolds, all eyes will be on how Russia balances innovation with sustainability in its approach to cryptocurrency.

 

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Despite delays, BC Hydro says crews responded well to 'atypical' storm

BC Hydro Ice Storm Response to Fraser Valley power outages highlights freezing rain impacts, round the clock crews, infrastructure challenges, and climate change risks across the Lower Mainland during winter weather and restoration efforts.

 

Key Points

A plan for freezing rain events that prioritizes safety, rapid repairs, and clear communication to restore power.

✅ Prioritizes hazards, critical loads, and public safety first

✅ Deploys crews, contractors, and equipment across affected areas

✅ Addresses climate risks without costly undergrounding expansion

 

Call it the straw that broke the llama's back.

The loss of power during recent Fraser Valley ice storms meant Jennifer Quick, who lives on a Mission farm, had no running water, couldn't cook with appliances and still had to tend to a daughter sick with stomach flu.

As if that wasn't enough, she had to endure the sight of her shivering llamas.

"I brought them outside at one point and when I brought them back in, they had icicles on their fur," she said, adding the animals stayed in the warmth of their barn from then on.

For three and a half days, Quick and her family were among more than 160,000 BC Hydro customers in the Fraser Valley left in the dark after ice storms whipped through the region.

BC Hydro expects to get all customers back online Tuesday, five days after the storm hit.

And with another storm possibly on the horizon, the utility is defending its response to the treacherous weather, noting that windstorm power outages can be widespread.

BC Hydro spokesperson Mora Scott said the utility has a "best in class" storm response system, similar to PG&E winter storm prep in the U.S.

"In a typical storm situation we normally have 95 per cent of our customers back up within 24 hours. Ice storms are different and obviously this was an atypical storm for us," she said.

Scott said that in this case, the utility got power back on for 75 per cent of customers within 24 hours. It took the work of 450 employees called in from around B.C., working around the clock, a mobilization echoed by Sudbury Hydro crews after a storm, she said.

The work was complicated by trees falling near crews, icy roads, low visibility and even substations so frozen over the ice had to be melted off with blowtorches.

She said that in the long term, BC Hydro has no plans to make changes to how it responds to extreme ice storms or how infrastructure is built.

"Seeing ice build up in the Lower Mainland like this is a rare event," she said. "So to build for extremes like that probably doesn't make a lot of sense."

 

Climate change will bring storms

But CBC meteorologist Johanna Wagstaffe said that might not always be the case as climate change continues to impact our planet.

"The less severe winter events, like light snowfall, will happen less often," she said. "But the disruptive events — like last week's storm — will actually happen more often and we are already seeing this shift happen."

Marc Eliesen, a former CEO of BC Hydro in the early 1990s, said the utility needs to keep that in mind when planning for worst-case scenarios.

"This [storm] is a condition characteristic of the weather in the east, particularly in Ontario and Quebec, where freezing rain outages in Quebec are more common, which is organized to deal with freezing rain and heavy snow on the lines," he said. "This is a new phenomenon for British Columbia."

Eliesen questions whether BC Hydro has adequate equipment and crew training to deal with ice storms if they become more frequent, pointing to Hydro One storm restoration in Ontario as a comparison.

 

'Always something we can learn'

Scott disagrees with some of Eliesen's points.

She said some of the crews called in to deal with the recent storm come from northern B.C. and the Interior and have plenty of experience with snow.

"There's always something we can learn in every major storm situation," she said.

The idea of putting power lines underground was raised by some CBC readers and listeners, but Scott said running underground lines is five to 10 times the cost of running lines on pole, so it is done sparingly. Besides, equipment like substations and transmission lines need to be kept aboveground.

Meanwhile, Wagstaffe said that beginning Thursday, wintry weather could return to the Lower Mainland.

 

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A Snapshot of the US Market for Smart Solar Inverters

Smart solar inverters anchor DER communications and control, meeting IEEE 1547 and California Rule 21 for volt/VAR, reactive power, and ride-through, expanding hosting capacity and enabling grid services via secure real-time telemetry and commands.

 

Key Points

Smart solar inverters use IEEE 1547, volt/VAR and reactive power to stabilize circuits and integrate DER safely.

✅ Meet IEEE 1547, Rule 21 ride-through and volt/VAR functions

✅ Support reactive power to manage voltage and hosting capacity

✅ Enable utility communications, telemetry, and grid services

 

Advanced solar inverters could be one of the biggest distributed energy resource communications and control points out there someday. With California now requiring at least early-stage “smart” capabilities from all new solar projects — and a standards road map for next-stage efforts like real-time communications and active controls — this future now has a template.

There are still a lot of unanswered questions about how smart inverters will be used.

That was the consensus at Intersolar this week, where experts discussed the latest developments on the U.S. smart solar inverter front. After years of pilot projects, multi-stakeholder technical working groups, and slow and steady standards development, solar smart inverters are finally starting to hit the market en masse — even if it’s not yet clear just what will be done with them once they’re installed.

“From the technical perspective, the standards are firm,” Roger Salas, distribution engineering manager for Southern California Edison, said. In September of last year, his utility started requiring that all new solar installations come with “Phase 1" advanced inverter functionality, as defined under the state’s Rule 21.

Later this month, it’s going to start requiring “reactive power priority” for these inverters, and in February 2019, it’s going to start requiring that inverters support the communications capabilities described in “Phase 2,” as well as some more advanced “Phase 3” capabilities.

 

Increasing hosting capacity: A win-win for solar and utilities

Each of these phases aligns with a different value proposition for smart inverters. The first phase is largely preventative, aimed at solving the kinds of problems that have forced costly upgrades to how inverters operate in solar-heavy Germany and Hawaii.

The key standard in question in the U.S. is IEEE 1547, which sets the rules for what grid-connected DERs must do to stay safe, such as trip offline when the grid goes down, or avoid overloading local transformers or circuits.

The old version of the standard, however, had a lot of restrictive rules on tripping off during relatively common voltage excursions, which could cause real problems on circuits with a lot of solar dropping off all at once.

Phase 1 implementation of IEEE 1547 is all about removing these barriers, Salas said. “They need to be stable, they need to be connected, they need to be able to support the grid.”

This should increase hosting capacity on circuits that would have otherwise been constrained by these unwelcome behaviors, he said.

 

Reactive power: Where utility and solar imperatives collide

The old versions of IEEE 1547 also didn’t provide rules for how inverters could use one of their more flexible capabilities: the ability to inject or absorb reactive power to mitigate voltage fluctuations, including those that may be caused by the PV itself. The new version opens up this capability, which could allow for an active application of reactive power to further increase hosting capacity, as well as solve other grid edge challenges for utilities.

But where utilities see opportunity, the solar industry sees a threat. Every unit of reactive power comes at the cost of a reduction in the real power output of solar inverters — and almost every solar installation out there is paid based on the real power it produces.

“If you’re tasked to do things that rob your energy sales, that will reduce compensation,” noted Ric O'Connell, executive director of the Oakland, Calif.-based GridLab. “And a lot of systems have third-party owners — the Sunruns, the Teslas — with growing Powerwall fleets — that have contracts, performance guarantees, and they want to get those financed. It’s harder to do that if there’s uncertainty in the future with curtailment."

“That’s the bottleneck right now,” said Daniel Munoz-Alvarez, a GTM Research grid edge analyst. “As we develop markets on the retail end for ...volt/VAR control to be compensated on the grid edge and that is compensated back to the customer, then the customer will be more willing to allow the utility to control their smart inverters or to allow some automation.”

But first, he said, “We need some agreed-upon functions.”

 

The future: Communications, controls and DER integration

The next stage of smart inverter functionality is establishing communications with the utility. After that, utilities will be able use them to monitor key DER data, or issue disconnect and reconnect commands in emergencies, as well as actively orchestrate other utility devices and systems through emerging virtual power plant strategies across their service areas.

This last area is where Salas sees the greatest opportunity to putting mass-market smart solar inverters to use. “If you want to maximize the DERs and what they can do, the need information from the grid. And DERs provide operational and capability information to the utility.”

Inverter makers have already been forced by California to enable the latest IEEE 1547 capabilities into their existing controls systems — but they are clearly embracing the role that their devices can play on the grid as well. Microinverter maker Enphase leveraged its work in Hawaii into a grid services business, seeking to provide data to utilities where they already had a significant number of installations. While Enphase has since scaled back dramatically, its main rival SolarEdge has taken up the same challenge, launching its own grid services arm earlier this summer.

Inverters have been technically capable of doing most of these things for a long time. But utilities and regulators have been waiting for the completion of IEEE 1547 to move forward decisively. Patrick Dalton, senior engineer for Xcel Energy, said his company’s utilities in Colorado and Minnesota are still several years away from mandating advanced inverter capabilities and are waiting for California’s energy transition example in order to choose a path forward.

In the meantime, it’s possible that Xcel's front-of-meter volt/VAR optimization investments in Colorado, including grid edge devices from startup Varentec, could solve many of the issues that have been addressed by smart inverter efforts in Hawaii and California, he noted.

The broader landscape for rolling out smart inverters for solar installations hasn’t changed much, with Hawaii and California still out ahead of the pack, while territories such as Puerto Rico microgrid rules evolve to support resilience. Arizona is the next most important state, with a high penetration of distributed solar, a contentious policy climate surrounding its proper treatment in future years, and a big smart inverter pilot from utility Arizona Public Service to inform stakeholders.

All told, eight separate smart inverter pilots are underway across eight states at present, according to GTM Research: Pacific Gas & Electric and San Diego Gas & Electric in California; APS and Salt River Project in Arizona; Hawaiian Electric in Hawaii; Duke Energy in North Carolina; Con Edison in New York; and a three-state pilot funded by the Department of Energy’s SunShot program and led by the Electric Power Research Institute.

 

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