Output from Three Gorges reaches record high

By Industrial Info Resources


Electrical Testing & Commissioning of Power Systems

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Following the breakthrough production of 10 billion kilowatt-hours (kWh) in July 2008, power output of the Three Gorges Power Station, the largest hydropower station in the world, reached 11.3 billion kWh, a new record high, in August 2008.

This is equivalent to about 3.3% of the total power output in China during the period, China Three Gorges Project Corporation announced on September 5.

Runoff in the Yangtze River during this year's flood season has not been as severe as in previous years. So far, the maximum inlet flow of the Three Gorges Reservoir has been 41,000 cubic meters per second, which is 10,000 cubic meters per second less than the maximum flow of the same period last year.

The flow in the upstream of the Yangtze River was 25% less than the annual average in July this year. In August, the accumulated duration with a discharge of over 35,000 cubic meters per second was only six days.

Through optimal reservoir and power dispatching, water resources were fully utilized without any waste of water in peaking regulation. In July, power output of the project reached 10.3 billion kWh.

In August, all units of the project were basically kept on full load operation, the maximum daily and monthly power output reached 389 million kWh and 11.3 billion kWh, respectively, creating a record high since the first unit of the project began operation in July 2003.

As of September 5, the total installed operational capacity of the Three Gorges Power Station reached 17,600 megawatts. Twenty-five of the 26 units proposed in the preliminary design have been put into operation. The last unit is currently under general assembly and is expected to begin operation at the end of October or the beginning of November this year.

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Energy freedom and solar’s strategy for the South

South Carolina Energy Freedom Act lifts net metering caps, reforms PURPA, and overhauls utility planning to boost solar competition, grid resiliency, and consumer choice across the Southeast amid Santee Cooper debt and utility monopoly pressure.

 

Key Points

A bipartisan reform lifting net metering caps, modernizing PURPA, and updating utility planning to expand solar.

✅ Lifts net metering cap to accelerate rooftop and community solar.

✅ Reforms PURPA contracts to enable fair pricing and transparent procurement.

✅ Modernizes utility IRP and opens markets to competition and customer choice.

 

The South Carolina House has approved the latest version of the Energy Freedom Act, a bill that overhauls the state’s electricity policies, including lifting the net metering caps and reforming PURPA implementation and utility planning processes in a way that advocates say levels the playing field for solar at all scales.

With Governor Henry McMaster (R) expected to sign the bill shortly, this is a major coup not just for solar in the state, but the region. This is particularly notable given the struggle that solar has had just to gain footing in many parts of the South, which is dominated by powerful utility monopolies and conservative politicians.

Two days ago when the bill passed the Senate we covered the details of the policy, but today we’re going to take a look at the politics of getting the Energy Freedom Act passed, and what this means for other Southern states and “red” states.

 

Opportunity amid crisis

The first thing to note about this bill is that it comes within a crisis in South Carolina’s electricity sector. This was the first legislative session following state-run utility Santee Cooper’s formal abandonment of a project to build two new reactors at the Virgil C. Sumner nuclear power plant, on which work stopped nearly two years ago.

Santee Cooper still holds $4 billion in construction debt related to the nuclear projects. According to an article in The State, this is costing its customers $5 per month toward the current debt, and this will rise to $13 per month for the next 40 years.

Such costs are particularly unwelcome in South Carolina, which has the highest annual electricity bills in the nation due to a combination of very high electricity usage driven by widespread air conditioning during the hot summers and higher prices per unit of power than other Southern states.

Following this fiasco, Santee Cooper’s CEO has stepped down, and the state government is currently considering selling the utility to a private entity. According to Maggie Clark, southeast state affairs senior manager for Solar Energy Industries Association, all of this set the stage for the bill that passed today.

“South Carolina is in a really ripe state for transformational energy policy in the wake of the VC Sumner nuclear plant cancellation,” Clark told pv magazine. “They were looking for a way forward, and I think this bill really provided them something to champion.”

 

Renewable energy policy for red states

This major win for solar policy comes in a state where the Republican Party holds majorities in both houses of the state’s legislature and sends bills to a Republican governor.

Broadly speaking, Republican politicians seldom show the level of interest in supporting renewable energy that Democrats do either at the state or national level, and show even less inclination to act to address greenhouse gas emissions. In fact, the 100% clean energy mandates that are being implemented in four states and Washington D.C. have only passed with Democratic trifectas, in other words with Republicans controlling neither house of the state legislature nor the governor’s office. (Note: This does not apply to Puerto Rico, which has a different party structure to the rest of the United States)

However, South Carolina shows there are Republican politicians who will support pro-renewable energy policies, and circumstances under which Republican majorities will vote for legislation that aids the adoption of solar. And these specific circumstances speak to both different priorities and ideological differences between the two parties.

SEIA’s Maggie Clark emphasizes that the Energy Freedom Act was about reforming market rules. “This was a way to provide a program that did not provide subsidies or incentives in any way, but to really open the market to competition,” explains Clark. “I think that appealing to conservatives in the South about energy independence and resiliency and ultimately cost savings is the winning message on this issue.”

Such messaging in South Carolina is not an accident. Not only has such messaging been successful in the past, but coalition partner Vote Solar paid for polling to find what messages resounded with the state’s voters, and found that choice and competition were likely to resound.

And all of this happened in the context of what Clark describes as an “extremely well-resourced effort”, with SEIA in particular dedicating national attention and resources to the state – as part of an effort by President and CEO Abigail Hopper to shift attention more towards state-level policy. Maggie Clark is one of two new regional staff who Hopper has hired, and SEIA’s first staff member focused on Southern states.

“Absolutely the South is a prioritized region,” Hopper told pv magazine, noting that three Southern states – the Carolinas and Florida – are among the 12 states that the organization has identified to work on this year. “It became clear that as a region it needed more attention.”

SEIA is not expecting fly-by-night victories, and Hopper attributes the success in South Carolina not only to a broad coalition, but to years of work on the ground in the state.

Nor is SEIA the only organization to grow its presence in the region. Vote Solar now has two full time staff located in the South, whereas two years ago its sole staff member dedicated to the region was located in Washington D.C.

 

Ideology versus reality in the South

The Energy Freedom Act aligns with conservative ideas about small government and competition, but the American right is not monolithic, nor do political ideas and actions always line up neatly, as other successful policies in other states in the region show

By far the largest deployment of renewable energy in the nation has been in Texas, aside from in California which leads overall. Here a system of renewable energy zones in the sparsely populated but windy and sunny west, north and center of the state feed cities to the east with power from wind and more recently solar.

This was enabled by transmission lines whose cost was socialized among the state’s ratepayers – a tremendous irony given that the state’s politicians would be some of the last in the nation to want to be identified with socializing anything.

Another example is Louisiana, which saw a healthy residential solar market over the last decade due to a 50% state rebate. The policy has expired, but when operating it was exactly the sort of outright subsidy that right-wing media and politicians rail against.

Of course there is also North Carolina, which built the 2nd-largest solar market in the nation on the back of successful state-level implementation of PURPA, a federal law. Finally there is Virginia, where large-scale projects are booming following a 2018 law that found that 5 GW of solar is in the public interest.

Furthermore, while conservatives continually expound the virtues of the free market, the reality of the electricity sector in the “deep red” South is anything but that. The region missed out on the wave of deregulation in the 1990s, and remains dominated by monopoly utilities regulated by the state: a union of big business and big government where competition is non-existent.

This has also meant that the solar which has been deployed in the South is mostly not the kind of rooftop solar that many think of as embodying energy independence, but rather large-scale solar built in farms, fields and forests.

 

Where to from here?

With such contradictions between stated ideology and practice, it is less clear what makes for successful renewable energy policy in the South. However, opening up markets appears to be working not only in South Carolina, but also in Florida, where third-party solar companies are making inroads after the state’s voters rejected a well-funded and duplicitous utilities’ campaign to kill distributed solar.

SEIA’s Hopper says that she is “aggressively optimistic” about solar in Florida. As utilities have dominated large-solar deployment in the state, even as the state declined federal solar incentives earlier this year, she says that she sees opening up the state’s booming utility-scale solar market to competition as a priority.

Some parts of the region may be harder than others, and it is notable that SEIA has not had as much to say about Alabama, Mississippi or Louisiana, which are largely controlled by utility giants Southern Company and Entergy, or the area under the thumb of the Tennessee Valley Authority, one of the most anti-solar entities in the power sector.

Abby Hopper says ultimately, demand from customers – both individuals and corporations – is the key to transforming policy. “You replicate these victories by customer demand,” Hopper told pv magazine. “That combination of voices from the customer are what’s going to drive change.”

 

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Indian government takes steps to get nuclear back on track

India Nuclear Generation Shortfall highlights missed five-year plan targets due to uranium fuel scarcity, commissioning delays at Kudankulam, PFBR slippage, and PHWR equipment bottlenecks under IAEA safeguards and domestic supply constraints.

 

Key Points

A gap between planned and actual nuclear output due to fuel shortages, reactor delays, and first-of-a-kind hurdles.

✅ Fuel scarcity pre-2009-10 constrained unsafeguarded reactors.

✅ Kudankulam delays from protests, litigation, and remobilisation.

✅ FOAK PHWR equipment bottlenecks and PFBR slippage.

 

A lack of available domestically produced nuclear fuel and delays in constructing and commissioning nuclear power plants, including first-of-a-kind plants and the Prototype Fast Breeder Reactor (PFBR), meant that India failed to meet its nuclear generation targets under the governmental plans over the decade to 2017, even as global project milestones were being recorded elsewhere.

India's nuclear generation target under its 11th five-year plan, covering the period 2007-2012, was 163,395 million units (MUs) and the 12th five-year Plan (2012-17) was 241,748 MUs, Minister of state for the Department of Atomic Energy and the Prime Minister's Office Jitendra Singh told parliament on 6 February. Actual nuclear generation in those periods was 109,642 MUs and 183,488 MUs respectively, Singh said in a written answer to questions in the Lok Sabah.

Singh attributed the shortfall in generation to a lack of availability of the necessary quantities of domestically produced fuel during the three years before 2009-2010; delays to the commissioning of two 1000 MWe nuclear power plants at Kudankulam due to local protests and legal challenges; and delays in the completion of two indigenously designed pressurised heavy water reactors and the PFBR.

Kudankulam 1 and 2 are VVER-1000 pressurised water reactors (PWRs) supplied by Russia's Atomstroyexport under a Russian-financed contract. The units were built by Nuclear Power Corporation of India Ltd (NPCIL) and were commissioned and are operated by NPCIL under International Atomic Energy Agency (IAEA) safeguards, with supervision from Russian specialists, while China's nuclear program advanced on a steady development track in the same period. Construction of the units - the first PWRs to enter operation in India - began in 2002.

Singh said local protests resulted in the halt of commissioning work at Kudankulam for nine months from September 2011 to March 2012, when he said project commissioning had been at its peak. As a consequence, additional time was needed to remobilise the workforce and contractors, he said. Litigation by anti-nuclear groups, and compliance with supreme court directives, impacted commissioning in 2013, he said. Unit 1 entered commercial operation in December 2014 and unit 2 in April 2017.

Delays in the manufacture and supply by domestic industry of critical equipment for first-of-a-kind 700 MWe pressurised heavy water reactors -  Kakrapar units 3 and 4, and Rajasthan units 7 and 8 - has led to delays in the completion of those units, the minister said, as well as noting the delay in completion of the PFBR, which is being built at Kalpakkam by Bhavini. In answer to a separate question, Singh said the PFBR is in an "advance stage of integrated commissioning" and is "expected to approach first criticality by the year 2020."

Eight of India's operating nuclear power plants are not under IAEA safeguards and can therefore only use indigenously-sourced uranium. The other 14 units operate under IAEA safeguards and can use imported uranium. The Indian government has taken several measures to secure fuel supplies for reactors in operation and under construction, amid coal supply rationing pressures elsewhere in the power sector, concluding fuel supply contracts with several countries for existing and future reactors under IAEA Safeguards and by "augmentation" of fuel supplies from domestic sources, Singh said.

Kakrapar 3 and 4, with Kakrapar 3 criticality already reported, and Rajasthan 7 and 8 are all currently expected to enter service in 2022, according to World Nuclear Association information.

 

Joint venture discussions

In February 2016 the government amended the Atomic Energy Act to allow NPCIL to form joint venture companies with other public sector undertakings (PSUs) for involvement in nuclear power generation and possibly other aspects of the fuel cycle, reflecting green industrial strategies shaping future reactor waves globally. In answer to another question, Singh confirmed that NPCIL has entered into joint ventures with NTPC Limited (National Thermal Power Corporation, India's largest power company) and Indian Oil Corporation Limited. Two joint venture companies - Anushakti Vidhyut Nigam Limited and NPCIL-Indian Oil Nuclear Energy Corporation Limited - have been incorporated, and discussions on possible projects to be set up by the joint venture companies are in progress.

An exploratory discussion had also been held with Oil & Natural Gas Corporation, Singh said. Indian Railways - which has in the past been identified as a potential joint venture partner for NPCIL - had "conveyed that they were not contemplating entering into an MoU for setting up of nuclear power plants," Singh said.

 

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Manitoba Government Extends Pause on New Cryptocurrency Connections

Manitoba Crypto Mining Electricity Pause signals a moratorium to manage grid strain, Manitoba Hydro capacity, infrastructure costs, and electricity rates, while policymakers evaluate sustainable energy demand, and planning for data centers and blockchain operations.

 

Key Points

A temporary halt on mining power hookups in Manitoba to assess grid impacts, protect rates, and plan sustainable use.

✅ Applies only to new service requests; existing sites unaffected

✅ Addresses grid strain, infrastructure costs, electricity rates

✅ Enables review with Manitoba Hydro for sustainable policy

 

The Manitoba government has temporarily suspended approving new electricity service connections for cryptocurrency mining operations, a step similar to BC Hydro's suspension seen in a neighboring province.


The Original Pause

The pause was initially imposed in November 2022 due to concerns that the rapid influx of cryptocurrency mining operations could place significant strain on the province's electrical grid. Manitoba Hydro, the province's primary electric utility, which has also faced legal scrutiny in the Sycamore Energy lawsuit, warned that unregulated expansion of the industry could necessitate billions of dollars in infrastructure investments, potentially driving up electricity rates for Manitobans.


The Extended Pause Offers Time for Review

The extension of the pause is meant to provide the government and Manitoba Hydro with more time to assess the situation thoroughly and develop a long-term solution addressing the challenges and opportunities presented by cryptocurrency mining, including evaluating emerging options such as modular nuclear reactors that other jurisdictions are studying. The government has stated its commitment to ensuring that the long-term impacts of the industry are understood and don't unintentionally harm other electricity customers.


What Does the Pause Mean?

The pause does not affect existing cryptocurrency operations but prevents the establishment of new ones.  It applies specifically to requests for electricity service that haven't yet resulted in agreements to construct infrastructure or supply electricity, and it comes amid regional policy shifts like Alberta ending its renewable moratorium that also affect grid planning.


Concerns About Energy Demands

Cryptocurrency mining involves running high-powered computers around the clock to solve complex mathematical problems. This process is incredibly energy-intensive. Globally, the energy consumption of cryptocurrency networks has drawn scrutiny for its environmental impact, with examples such as Iceland's mining power use illustrating the scale. In Manitoba, concern focuses on potentially straining the electrical grid and making it difficult for Manitoba Hydro to plan for future growth.


Other Jurisdictions Taking Similar Steps

Manitoba is not alone in its cautionary approach to cryptocurrency mining. Several other regions and utilities have implemented restrictions or are exploring limitations on how cryptocurrency miners can access electricity, including moves by Russia to ban mining amid power deficits. This reflects a growing awareness among policymakers about the potentially destabilizing impact this industry could have on power grids and electricity markets.


Finding a Sustainable Path Forward

Manitoba Hydro has stated that it is open to working with cryptocurrency operations but emphasizes the need to do so in a way that protects existing ratepayers and ensures a stable and reliable electricity system for all Manitobans, while recognizing market uncertainties highlighted by Alberta wind project challenges in a neighboring province. The government's extension of the pause signifies its intention to find a responsible path forward, balancing the potential for economic development with the necessity of safeguarding the province's power supply.

 

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Renewable growth drives common goals for electricity networks across the globe

Energy Transition Grid Reforms address transmission capacity, interconnection, congestion management, and flexibility markets, enabling renewable integration and grid stability while optimizing network charges and access in Australia, Ireland, and Great Britain.

 

Key Points

Measures to expand transmission, boost flexibility, and manage congestion for reliable, low-carbon electricity systems.

✅ Transmission upgrades and interconnectors ease congestion

✅ Flexible markets, DER, and storage bolster grid stability

✅ Evolving network charges and access incentivize siting

 

Electricity networks globally are experiencing significant increases in the volume of renewable capacity as countries seek to decarbonise their power sectors, even as clean energy's 'dirty secret' highlights integration trade-offs, without impacting the security of supply. The scale of this change is creating new challenges for power networks and those responsible for keeping the lights on.

The latest insight paper from Cornwall Insight – Market design amidst global energy transition – looks into this issue. It examines the outlook for transmission networks, and how legacy design and policies are supporting decarbonisation, aligning with IRENA findings on renewables and shaping the system. The paper focuses on three key markets; Australia, Ireland and Great Britain (GB).

Australia's main priority is to enhance transmission capacity and network efficiency; as concerns over excess solar risking blackouts grow in distribution networks, without this, the transmission system will be a barrier to growth for decentralised flexibility and renewables. In contrast, GB and Ireland benefit from interconnection with other national markets. This provides them with additional levers that can be pulled to manage system security and supply. However, they are still trying to hone and optimise network flexibility in light of steepening decarbonisation objectives.

Unsurprisingly, renewable energy resources have been growing in all three markets, with Ireland regarded as a leader in grid integration, with this expected to continue for the foreseeable future. Many of these projects are often located in places where network infrastructure is not as well developed, creating pressure on system operation as a result.

In all three markets, unit charges are rising, driven by a reduced charging base as decentralised energy grows quickly. This combination of changes is leading to network congestion, a challenge mirrored by the US grid overhaul for renewables underway, as transmission network development struggles to keep up, and flexibility markets are being optimised and changed.

In summary, reforms are on-going in each jurisdiction to accommodate the rapid physical transformation of the generation mix. Each has its objectives and tensions which are reflective of wider global reform programmes being undertaken in most developed, liberalised and decarbonising energy markets.

Gareth Miller, CEO of Cornwall Insight, said: “Despite differences in market design and characteristics, all three markets are grappling with similar issues, that comes from committing to deep decarbonisation. This includes the most appropriate methods for charging for networks, managing access to them and dealing with issues such as network congestion and constraint.

“In all three countries, renewable projects are often placed in isolated locations, as seen in Scotland where more pylons are needed to keep the lights on, away from the traditional infrastructure that is closer to demand. However, as renewable growth is set to continue, the networks will need to transition from being demand-centric to more supply orientated.

“Both system operators and stakeholders will need to continually evaluate their market structures and designs to alleviate issues surrounding locational congestion and grid stability. Each market is at very different stages in the process in trying to improve any problems implementing solutions to allow for higher efficiencies in renewable energy integration.

“It is uncertain whether any of the proposed changes will fundamentally resolve the issues that come with increased renewables on the system. However, despite marked differences, they certainly could all learn from each other and elements of their network arrangements, as well as from US decarbonisation strategies research.”

 

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Canada and Manitoba invest in new turbines

Manitoba Clean Electricity Investment will upgrade hydroelectric turbines, expand a 230 kV transmission network, and deliver reliable, affordable low-carbon power, reducing greenhouse gas emissions and strengthening grid reliability across Portage la Prairie and Winnipeg River.

 

Key Points

Joint federal-provincial funding to upgrade hydro turbines and build a 230 kV grid, boosting reliable, low-carbon power.

✅ $314M for new turbines at Pointe du Bois (+52 MW capacity)

✅ $161.6M for 230 kV transmission in Portage la Prairie

✅ Cuts Brandon Generating Station emissions by ~37%

 

The governments of Canada and Manitoba have announced a joint investment of $475.6 million to strengthen Manitoba’s clean electricity grid that can support neighboring provinces with clean power and ensure continued supply of affordable and reliable low-carbon energy.

This federal-provincial investment provides $314 million for eight new hydroelectric turbines at the 75 MW Pointe du Bois Generating Station on the Winnipeg River, as well as $161.6 million to build a new 230 kV transmission network in the Portage la Prairie area, bolstering power sales to SaskPower and regional reliability.

The $314 million joint investment in the Pointe du Bois Renewable Energy Project includes $114.1 million from the Government of Canada and nearly $200 million from the Government of Manitoba. The joint investment will enable Manitoba Hydro to replace eight generating units that are at the end of their lifecycle, amid looming new generation needs for the province. The new, more efficient units will increase the capacity of the Pointe du Bois generating station by 52 MW.

The $161.6 million joint investment in the Portage Area Capacity Enhancement project includes $70.9 million from the Government of Canada and $90.6 million from the Government of Manitoba. The joint investment will support the construction of a new transmission line to enhance reliability for customers across southwest Manitoba and help Manitoba Hydro meet increasing demand, with projections that demand could double over the next two decades. By decreasing Manitoba’s reliance on its last grid-connected fossil-fuel generating station, this investment will reduce greenhouse gas emissions at the Brandon Generating Station by about 37%.

The federal government’s total contribution of $184.9 million is provided through the Green Infrastructure Stream of the Investing in Canada Plan, alongside efforts to improve interprovincial grid integration such as NB Power agreements with Hydro-Quebec that strengthen regional reliability. This federal funding is conditional on meeting Indigenous consultation requirements, as well as environmental assessment obligations. Including today’s announcement, the Green Infrastructure Stream has supported 38 infrastructure projects in Manitoba, for a total federal contribution of more than $766.8 million and a total provincial contribution of over $658.4 million.

“A key part of our economic plan is making Canada a clean electricity superpower. Today’s announcement in Manitoba will deliver clean, reliable, and affordable electricity to people and businesses across the province—and we will continue working to expand our clean electricity grid and create great careers for people from coast to coast to coast,” said Deputy Prime Minister and Finance Minister Chrystia Freeland.

The federal government will continue to invest in making Canada a clean electricity superpower, supporting provincial initiatives like Hydro-Quebec's fossil-free strategy that complement these investments to ensure Canadians from coast to coast to coast have the affordable and reliable clean electricity they need today and for generations to come.

“Manitoba Hydro is extremely pleased to be receiving this federal funding through the Green Infrastructure Stream of the Investing in Canada Infrastructure Program. The investments we are making in both these critical infrastructure projects will help provide Manitobans with energy for life and power our province’s economic growth with clean, reliable, renewable hydroelectricity. These projects build on our legacy of investments in renewable energy over the past 100 years, as we work towards a lower carbon future for all Manitobans,” said Jay Grewal, president and chief executive officer of Manitoba Hydro.

About 97% of Manitoba’s electricity is generated from clean hydro, with most of the remaining 3% coming from wind generation. Manitoba’s abundant clean electricity has resulted in Manitobans paying 9.455 ¢/kWh — the second-lowest electricity rate in Canada, though limits on serving new energy-intensive customers have been flagged recently.

 

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California Public Utilities Commission sides with community energy program over SDG&E

CPUC Decision on San Diego Community Power directs SDG&E to use updated forecasts, stabilizing electricity rates for CCA customers and supporting clean energy in San Diego with accurate rate forecasting and reduced volatility.

 

Key Points

A CPUC ruling directing SDG&E to use updated forecasts to ensure accurate, stable CCA rates and limit volatility.

✅ Uses 2021 sales forecasts for rate setting

✅ Aims to prevent undercollection and bill spikes

✅ Levels changes across customer classes

 

The California Public Utilities Commission on Thursday sided with the soon-to-launch San Diego community energy program in a dispute it had with San Diego Gas & Electric.

San Diego Community Power — which will begin to purchase power for customers in San Diego, Chula Vista, La Mesa, Encinitas and Imperial Beach later this year — had complained to the commission that data SDG&E intended to use to calculate rates, including community choice exit fees that could make the new energy program less attractive to prospective customers.

SDG&E argued it was using numbers it was authorized to employ as part of a general rate case amid a potential rate structure revamp that is still being considered by the commission.

But in a 4-0 vote, the commission, or CPUC, sided with San Diego Community Power and directed SDG&E to use an updated forecast for energy sales.

"This was not an easy decision," said CPUC president Marybel Batjer at the meeting, held remotely due to COVID-19 restrictions. "In my mind, this outcome best accounts for the shifting realities ... in the San Diego area while minimizing the impact on ratepayers during these difficult financial times."

In filings to the commission, SDG&E predicted a rate decrease of 12.35 percent in the coming year. While that appears to be good news for customers, Californians still face soaring electricity prices statewide, Commissioner Martha Guzman Aceves said the data set SDG&E wanted to use would lead to an undercollection of $150 million to $260 million.

That would result in rates that would be "artificially low," Guzman Aceves said, and rates "would inevitably go up quite a bit after the undercollection was addressed."

San Diego Community Power, or SDCP, said the temporary reduction would make its rates less attractive than SDG&E's, especially amid SDG&E's minimum charge proposal affecting low-usage customers, just as it is about to begin serving customers. SDCP's board members wrote an open letter last month to the commission, accusing the utility of "willful manipulation of data."

Working with an administrative law judge at the CPUC, Guzman Aceves authored a proposal requiring SDG&E to use numbers based on 2021 forecasts, as regulators simultaneously weigh whether the state needs more power plants to ensure reliability. The utility argued that could result in an increase of "roughly 40 percent" for medium and large commercial and industrial customers this year.

To help reduce potential volatility, Guzman Aceves, SDCP and other community energy supporters called for using a formula that would average out changes in rates across customer classes amid debates over income-based utility charges statewide. That's what the commissioners OK'd Thursday.

"It is essential that customer commodity rates be as accurate as we can possibly get them to avoid undercollections," said Commissioner Genevieve Shiroma.

San Diego Community Power is one of 23 community choice aggregation, or CCA, energy programs that have launched in California in the past decade.

CCAs compete with traditional power companies amid California's evolving power competition landscape, in one important role — purchasing power for a given community. They were created to boost the use of cleaner energy sources, such as wind and solar, at rates equal to or lower than investor-owned utilities.

However, CCAs do not replace utilities because the incumbent power companies still perform all of the tasks outside of power purchasing, such as transmission and distribution of energy and customer billing.

When a CCA is formed, California rules stipulate the utility customers in that area are automatically enrolled in the CCA. If customers prefer to stay with their previous power company, they can opt out of joining the CCA.

The shift of customers from SDG&E to San Diego Community Power is expected to be large. The total number of accounts for SDCP is expected to be 770,000, which would make it the second-largest CCA in the state. That's why SDCP considered Thursday's CPUC decision to be so important.

"At a time when customers are choosing between sticking with San Diego Gas & Electric and migrating to a CCA, we want them to have accurate bill information," said Commissioner Clifford Rechtschaffen.

"SDCP is very happy with today's CPUC decision, and that the commissioners shared our goal of limiting rate volatility for businesses and families in the region," said SDCP interim CEO Bill Carnahan. "This is definitely a win for accurate rate forecasting, and our mutual customers, and we look forward to working with SDG&E on next steps."

In an email, SDG&E spokeswoman Helen Gao said, "We are committed to continuing to work collaboratively with local Community Choice Aggregation programs to support their successful launch in 2021 and ensure that our mutual customers receive excellent customer service."

San Diego Community Power's case before the CPUC was joined by the California Community Choice Association, a trade group advocating for CCAs, and the Clean Energy Alliance — the North County-based CCA representing Del Mar, Solana Beach and Carlsbad that is scheduled to launch this summer.

SDCP will begin its rollout this year, folding in about 71,000 municipal, commercial and industrial accounts. The bulk of its roughly 700,000 residential accounts is expected to come in January 2022.

 

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