Ideal Power Enters Canadian Market with 360kW Order from KACO new energy


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Ideal Power 3-Port PCS enables grid-resilient solar PV and energy storage integration at Leduc #1 with KACO, supporting microgrids, trackers, wind, and cogeneration for efficient, reliable, lower-cost hybrid power in Alberta.

 

Key Points

A grid-resilient 30kW power converter integrating solar PV and batteries via single AC and dual DC ports.

✅ Dual DC plus single AC ports for solar and storage

✅ Boosts efficiency with PV smoothing and firming

✅ Compact, lighter hardware lowers capex and opex

 

A developer of innovative power conversion technologies, has received a 360kW purchase order from KACO new energy (KACO) to supply its 3-port, grid-resilient 30kW Power Conversion Systems (PCS) for the Living Energy Project at the Leduc #1 Energy Discovery Centre in Alberta, Canada. Ideal Power will supply the power conversion systems and KACO will provide the system integration and installation. The Living Energy Project will utilize solar PV with trackers, energy storage, a wind turbine mounted atop a purpose-built oil derrick, and a natural gas-fueled cogeneration unit to capture geothermal energy from an abandoned oil well, aligning with broader green hydrogen microgrid developments underway in North America.

“The Living Energy Project will be an excellent showcase for our power conversion technology enabling energy storage to be integrated directly with a solar tracking system, and it complements emerging virtual power plant programs that aggregate distributed energy resources,” said Dan Brdar, CEO of Ideal Power. “The project will demonstrate the intersection of oilfield services and renewable energy. The mobile solar PV system used at Leduc #1 will utilize a much cleaner and lower cost method to power remote, off-grid facilities than a traditional oil-fired diesel generator.”

The Leduc #1 Energy Discovery Centre is located just outside of Edmonton, Alberta, and is the site of the initial oil well that kick-started the province’s entrance to the oil industry in 1947. The now abandoned well has been converted into an energy museum and 55-acre park focused on the demonstration of environmental technology. The renewables integration and geothermal conversion are part of a plan to turn Leduc #1 into the world’s first carbon neutral oil museum, and align with early vehicle-to-grid pilots that link EVs and the grid.

“For any renewable energy project that incorporates battery storage, Ideal Power offers the perfect power conversion technology because it allows us to deliver a solution that dramatically boosts efficiency and reliability, but with dramatically lower system costs for integrating solar power and energy storage,” said Jurgen Krehnke, CEO for the Americas at KACO new energy. “The installation at Leduc #1 is particularly important because it will be a visual, working representation of the past meeting the future, highlighting our declining dependence on fossil fuels coupled with the ingenuity that promises a clean energy future, including advances in vehicle-to-grid integration across Canada.”

Ideal Power’s grid-resilient PCS is smaller, lighter, and more cost effective than traditional power conversion systems. For integration of solar with energy storage, the embedded power management algorithms deliver PV smoothing and PV firming for grid-tied applications and enable the deployment of high performance PV-based microgrids, while supporting coordination with managed V1G EV charging strategies in emerging programs. PPSA™ also increases round-trip efficiency, which results in lower operational expenditures and combined with the reduction in material, manufacturing, shipping and installation costs greatly improves return on investment for a project owner.

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EU Smart Meters Spur Growth in the Customer Analytics Market

EU Smart Meter Analytics integrates AMI data with grid edge platforms, enabling back-office efficiency, revenue assurance, and customer insights via cloud and PaaS solutions, while system integration cuts costs and improves utility performance.

 

Key Points

EU smart meter analytics uses AMI data and cloud to improve utility performance, revenue assurance, and outcomes.

✅ AMI underpins grid edge analytics and utility IT/OT integration

✅ Cloud and PaaS reduce costs and scale data-driven applications

✅ Focus shifts from meter rollout to back-office and revenue analytics

 

Europe's investment in smart meters has begun to open up the market for analytics that benefit both utilities and customers.

Two new reports from GTM Research demonstrate the substantial investment in both advanced metering infrastructure (AMI) and specific customer analytics segments -- the first report analyzes the progress of AMI deployment in Europe, while the second is a comprehensive assessment of analytics use cases, including AI in utility operations, enabled by or interacting with AMI.

The Third Energy Package mandated EU member states to perform a cost-benefit analysis to evaluate the economic viability of deploying smart meters and broader grid modernization costs across member states. Two-thirds of the member states found there was a net positive result, while seven members found negative or inconclusive results.

“The mandate spurred AMI deployment in the EU, but all member states are deploying some AMI. Even without an overall positive cost-benefit outcome, utilities found pockets of customers where there is a positive business case for AMI,” said Paulina Tarrant, research associate at GTM Research and lead author of “Racing to 2020: European Policy, Deployment and Market Share Primer.”

Annual AMI contracting peaked in 2013 -- two years after the mandate -- with 29 million contracted that year. Today, 100 million meters have been contracted overall. As member states reach their respective targets, the AMI market will cool in Europe and spending on analytics and applications will continue to ramp up, aligning with efforts to invest in smarter infrastructure across the sector, Tarrant noted.

Between 2017 and 2021, more than $30 billion will be spent on utility back-office and revenue-assurance analytics in the EU, reflecting the shift toward the digital grid architecture, according to GTM Research’s Grid Edge Customer Utility Analytics Ecosystems: Competitive Analysis, Forecasts and Case Studies.

The report examines the broad landscape of customer analytics showing how AMI interacts with the larger IT/OT environment of a utility.

“The benefits of AMI expand beyond revenue assurance -- in fact, AMI represents the backbone of many customer utility analytics and grid edge solutions,” said Timotej Gavrilovic, author of the Grid Edge Customer Utility Ecosystems report.

Integration is key, according to the report.

“Technology providers are integrating data sets, solutions and systems and partnering with others to provide a one-stop shop serving broad utility needs, increasing efficiencies and reducing costs,” Gavrilovic said. “Cloud-based deployments and platform-as-a-service offerings are becoming commonplace, creating an opportunity for utilities to balance the cost versus performance tradeoff to optimize their analytics systems and applications.”

A diverse array of customer analytics applications is a critical foundation for demonstrating the positive cost-benefit of AMI.

“Advanced analytics and applications are key to ensuring that AMI investments provide a positive return after smart meters are initiated,” said Tarrant. “Improved billing and revenue assurance was not enough everywhere to show customer benefit -- these analytics packages will leverage the distributed network infrastructure, including advanced inverters used with distributed energy resources, and subsequent increased data access, uniting the electricity markets of the EU.”

 

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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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Massachusetts stirs controversy with solar demand charge, TOU pricing cut

Massachusetts Solar Net Metering faces new demand charges and elimination of residential time-of-use rates under an MDPU order, as Eversource cites grid cost fairness while clean energy advocates warn of impacts on distributed solar growth.

 

Key Points

Policy letting solar customers net out usage with exports; MDPU now adds demand charges and ends TOU rates.

✅ New residential solar demand charges start Dec 31, 2018.

✅ Optional residential TOU rates eliminated by MDPU order.

✅ Eversource cites grid cost fairness; advocates warn slower solar.

 

A recent Massachusetts Department of Public Utilities' rate case order changes the way solar net metering works and eliminates optional residential time-of-use rates, stirring controversy between clean energy advocates and utility Eversource and potential consumer backlash over rate design.

"There is a lot of room to talk about what net-energy metering should look like, but a demand charge is an unfair way to charge customers," Mark LeBel, staff attorney at non-profit clean energy advocacy organization Acadia Center, said in a Tuesday phone call. Acadia Center is an intervenor in the rate case and opposed the changes.

The Friday MDPU order implements demand charges for new residential solar projects starting on December 31, 2018. Such charges are based on the highest peak hourly consumption over the course of a month, regardless of what time the power is consumed.

Eversource contends the demand charge will more fairly distribute the costs of maintaining the local power grid, echoing minimum charge proposals aimed at low-usage customers. Net metering is often criticized for not evenly distributing those costs, which are effectively subsidized by non-net-metered customers.

"What the demand charge will do is eliminate, to the extent possible, the unfair cross subsidization by non-net-metered customers that currently exists with rates that only have kilowatt-hour charges and no kilowatt demand, Mike Durand, Eversource spokesman, said in a Tuesday email. 

"For net metered facilities that use little kilowatt-hours, a demand charge is a way to charge them for their fair share of the cost of the significant maintenance and upgrade work we do on the local grid every day," Durand said. "Currently, their neighbors are paying more than their share of those costs."

It will not affect existing facilities, Durand said, only those installed after December 31, 2018.

Solar advocates are not enthusiastic about the change and see it slowing the growth of solar power, particularly residential rooftop solar, in the state.

"This is a terrible outcome for the future of solar in Massachusetts," Nathan Phelps, program manager of distributed generation and regulatory policy at solar power advocacy group Vote Solar, said in a Tuesday phone call.

"It's very inconsistent with DPU precedent and numerous pieces of legislation passed in the last 10 years," Phelps said. "The commonwealth has passed several pieces of legislation that are supportive of renewable energy and solar power. I don't know what the DPU was thinking."

 

TIME-OF-USE PRICING ELIMINATED

It does not matter when during the month peak demand occurs -- which could be during the week in the evening -- customers will be charged the same as they would on a hot summer day, LeBel said. Because an individual customer's peak usage does not necessarily correspond to peak demand across the utility's system, consumers are not being provided incentives to reduce energy usage in a way that could benefit the power system, Acadia Center said in a Tuesday statement.

However, Eversource maintains that residential customer distribution peaks based on customer load profiles do not align with basic service peak periods, which are based on Independent System Operator New England's peaks that reflect market-based pricing, even as a Connecticut market overhaul advances in the region, according to the MDPU order.

"The residential Time of Use rates we're eliminating are obsolete, having been designed decades ago when we were responsible for both the generation and the delivery of electricity," Eversource's Durand said.

"We are no longer in the generation business, having divested of our generation assets in Massachusetts in compliance with the law that restructured of our industry back in the late 1990s. Time Varying pricing is best used with generation rates, where the price for electricity changes based on time of day and electricity demand and can significantly alter electric bills for households," he said.

Additionally, only 0.02% of residential customers take service on Eversource's TOU rates and it would be difficult for residential customers to avoid peak period rates because they do not have the ability to shift or reduce load, according to the order.

"The Department allowed the Companies' proposal to eliminate their optional residential TOU rates in order to consolidate and align their residential rates and tariffs to better achieve the rate structure goal of simplicity," the MDPU said in the order.

 

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California just made more clean energy than it needed

CAISO Net Negative Emissions signal moments when greenhouse gas intensity of serving ISO demand drops below zero, driven by high renewable generation, low load, strong solar exports, and imports accounting in the California grid.

 

Key Points

Moments when CAISO's CO2 to serve demand is below zero, driven by renewables, exports, and import accounting.

✅ Calculated using imports and exports to serve ISO demand

✅ Occur during high solar output, low weekend load

✅ Coincide with curtailment and record renewable penetration

 

We’re a long way from the land of milk and honey, but on Easter Sunday – for about an hour – we got a taste.

On Sunday, at 1:55 PM Pacific Time the California Independent Systems Operator (CAISO) reported that greenhouse gas emissions necessary to serve its demand (~80% of California’s electricity demand on an annual basis), was measured at a rate -16 metric tons of CO2 per hour. Five minutes later, the value was -2 mTCO2/h, before it crept back up to 40 mTCO2/h at 2:05 PM PST. At 2:10 PST though it fell back to -86 mTCO2/h and stayed negative until 3:05 PM PST, even as global CO2 emissions flatlined in 2019 according to the IEA.

This information was brought to the attention of pv magazine via tweet from eagle eye Jon Pa after CAISO’s site first noted the negative values:

The region was still generating CO2 though, as natural gas, biogas, biomass, geothermal and even coal plants were running and pumping out emissions, even as potent greenhouse gases declined in the US under control efforts. CAISO’s Greenhouse Gas Emission Tracking Methodology, December 28, 2016 (pdf) notes the below calculations to create the value what it terms, “Total GHG emissions to serve ISO demand”:

Of importance to note is that to get to the net negative value, CAISO considered all electricity imports and exports, a reminder that climate policy shapes grid operations across North America. And as can be noted in the image below the CO2 intensity of imports during the day rapidly declined as the sun came up, first going negative around 9:05 AM PST, and mostly staying so until just before 6 PM PST.

During this same weekend, other records were noted (reiterating that we’re in record setting season and as the state pursues its 100% carbon-free mandate now in law) such as a new electricity export record of greater than 2 GW and total renewable electricity as part of total demand at greater than 70%.

At the peak negative moment of 2:15 PM PST, -112 mTCO2/h seen below, the total amount of clean instantaneous generation being used in the power grid region was 17 GW, a far cry from heat-driven reliability strains like rolling blackout warnings that arise during extreme demand, with renewables giving 76% of the total, hydro 14%, nuclear 13% and imports of -12% countering the CO2 coming from just over 1.4 GW of gas generation.

Also of importance are a few layers of nuance in the electricity demand charts. First off we’re in the shoulder seasons  of California – nice cool weather before the warmth of summer drives air conditioning demand. Additional the weekend electricity demand is always lower, as well, Easter Sunday might have had an affect, whereas in colder regions Calgary’s electricity use can soar during frigid snaps.

Lastly to note was the amount of electricity from solar and wind generation being curtailed. And while the Sunday numbers weren’t available yet, the below image noted Saturday with 10 GWh in total being curtailed (pdf) – peaking at over 3.2 GW of instantaneous mostly solar power even as solar is now the cheapest electricity according to the IEA, in the hours of 2 and 3 PM PST. On an annualized basis, less than 2% of total potential solar electricity was curtailed in 2018.

 

 

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Kaspersky Lab Discovers Russian Hacker Infrastructure

Crouching Yeti APT targets energy infrastructure with watering-hole attacks, compromising servers to steal credentials and stage intrusions; Kaspersky Lab links the Energetic Bear group to ICS threats across Russia, US, Europe, and Turkey.

 

Key Points

Crouching Yeti APT, aka Energetic Bear, is a threat group that targets energy firms using watering-hole attacks.

✅ Targets energy infrastructure via watering-hole compromises

✅ Uses open-source tools and backdoored sshd for persistence

✅ Scans global servers to stage intrusions and steal credentials

 

A hacker collective known for attacking industrial companies around the world have had some of their infrastructure identified by Russian security specialists.

Kaspersky Lab said that it has discovered a number of servers compromised by the group, belonging to different organisations based in Russia, the US, and Turkey, as well as European countries.

The Russian-speaking hackers, known as Crouching Yeti or Energetic Bear, mostly focus on energy facilities, as seen in reports of infiltration of the U.S. power grid targeting critical infrastructure, for the main purpose of stealing valuable data from victim systems.

 

Hacked servers

Crouching Yeti is described as an advanced persistent threat (APT) group that Kaspersky Lab has been tracking since 2010.

#google#

Kaspersky Lab said that the servers it has compromised are not just limited to industrial companies. The servers were hit in 2016 and 2017 with different intentions. Some were compromised to gain access to other resources or to be used as intermediaries to conduct attacks on other resources.

Others, including those hosting Russian websites, were used as watering holes.

It is a common tactic for Crouching Yeti to utilise watering hole attacks where the attackers inject websites with a link redirecting visitors to a malicious server.

“In the process of analysing infected servers, researchers identified numerous websites and servers used by organisations in Russia, US, Europe, Asia and Latin America that the attackers had scanned with various tools, possibly to find a server that could be used to establish a foothold for hosting the attackers’ tools and to subsequently develop an attack,” said the security specialists in a blog posting.

“The range of websites and servers that captured the attention of the intruders is extensive,” the firm said. “Kaspersky Lab researchers found that the attackers had scanned numerous websites of different types, including online stores and services, public organisations, NGOs, manufacturing, etc.

Kaspersky Lab said that the hackers used publicly available malicious tools, designed for analysing servers, and for seeking out and collecting information. The researchers also found a modified sshd file with a preinstalled backdoor. This was used to replace the original file and could be authorised with a ‘master password’.

“Crouching Yeti is a notorious Russian-speaking group that has been active for many years and is still successfully targeting industrial organisations through watering hole attacks, among other techniques,” explained Vladimir Dashchenko, head of vulnerability research group at Kaspersky Lab ICS CERT.

 

Russian government?

“Our findings show that the group compromised servers not only for establishing watering holes, but also for further scanning, and they actively used open-sourced tools that made it much harder to identify them afterwards,” he said.

“The group’s activities, such as initial data collection, the theft of authentication data, and the scanning of resources, are used to launch further attacks,” said Dashchenko. “The diversity of infected servers and scanned resources suggests the group may operate in the interests of the third parties.”

This may well tie into a similar conclusion from a rival security vendor.

In 2014 CrowdStrike claimed that the ‘Energetic Bear’ group was also tracked in Symantec's Dragonfly research and had been hacking foreign companies on behalf of the Russian state.

The security vendor had said the group had been carrying out attacks on foreign companies since 2012, with reports of breaches at U.S. power plants that underscored the campaign, and there was evidence that these operations were sanctioned by the Russian government.

Last month the United States for the first time publicly accused Russia in a condemnation of Russian grid hacking of attacks against the American power grid.

Symantec meanwhile warned last year of a resurgence in cyber attacks on European and US energy companies, including reports of access to U.S. utility control rooms that could result in widespread power outages.

And last July the UK’s National Cyber Security Centre (NCSC) acknowledged it was investigating a broad wave of attacks on companies in the British energy and manufacturing sectors.

 

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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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