Will Electric Vehicles Crash The Grid?

France Plug-In Electric Car Sales September 2023 show rapid EV adoption: 45,872 plug-ins, 30% market share, BEV 19.6%, PHEV 10.2%, with Tesla Model Y leading registrations amid sustained year-over-year growth.

Key Points

France registered 45,872 plug-ins in September 2023, a 30% share, with BEVs at 19.6% and PHEVs at 10.2%.

✅ Tesla Model Y led BEVs with 5,035 registrations in September

✅ YTD plug-in share 25%; BEV 15.9%, PHEV 9.1% across passenger cars

✅ Total market up 9% YoY to 153,916; plug-ins up 35% YoY

New passenger car registrations in France increased in September by nine percent year-over-year to 153,916, mirroring global EV market growth trends, taking the year-to-date total to 1,286,247 (up 16 percent year-over-year).

The market has been expanding every month this year (recovering slightly from the 2020-2022 collapse and the period when EU EV share grew during lockdowns across the bloc) and also is becoming more and more electrifying thanks to increasing plug-in electric car sales.

According to L’Avere-France, last month 45,872 new passenger plug-in electric cars were registered in France (35 percent more than a year ago), which represented almost 30 percent of the market, aligning with the view that the age of electric cars is arriving ahead of schedule. That's a new record share for rechargeable cars and a noticeable jump compared to just over 24 percent a year ago.

What's even more impressive is that passenger all-electric car registrations increased to over 30,000 (up 34 percent year-over-year), taking a record share of 19.6 percent of the market. That's basically one in five new cars sold, and in the U.S., plug-ins logged 19 billion electric miles in 2021 as a benchmark.

Plug-in hybrids are also growing (up 35% year-over-year), and with 15,699 units sold, accounted for 10.2 percent of the market (a near record value).

Plug-in car sales in France – September 2023

So far this year, more than 341,000 new plug-in electric vehicles have been registered in France, including over 321,000 passenger plug-in cars (25 percent of the market), while in the U.S., EV sales are soaring into 2024 as well.

Plug-in car registrations year-to-date (YOY change):

• Passenger BEVs: 204,616 (up 45%) and 15.9% market share
• Passenger PHEVs: 116,446 (up 31%) and 9.1% market share
• Total passenger plug-ins: 321,062 (up 40%) and 25% market share
• Light commercial BEVs: 20,292 (up 111%)
• Light commercial PHEVs: 281 (down 38%)
• Total plug-ins: 341,635 (up 43%)

For reference, in 2022, more than 346,000 new plug-in electric vehicles were registered in France (including almost 330,000 passenger cars, which was 21.5 percent of the market).

We can already tell that the year 2023 will be very positive for electrification in France, with a potential to reach 450,000 units or so, though new EV incentive rules could reshape the competitive landscape.

Models
In terms of individual models, the Tesla Model Y again was the most registered BEV with 5,035 new registrations in September. This spectacular result enabled the Model Y to become the fifth best-selling model in the country last month (Tesla, as a brand, was seventh).

The other best-selling models are usually small city cars - Peugeot e-208 (3,924), Dacia Spring (2,514), Fiat 500 electric (2,296), and MG4 (1,945), amid measures discouraging Chinese EVs in France. Meanwhile, the best-selling electric Renault - the Megane-e - was outside the top five BEVs, which reveals to us how much has changed since the Renault Zoe times.

After the first nine months of the year, the top three BEVs are the Tesla Model Y (27,458), Dacia Spring (21,103), and Peugeot e-208 (19,074), slightly ahead of the Fiat 500 electric (17,441).

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EV Tipping Point signals the S-curve shift to mainstream adoption as new car sales pass 5%, with the US joining Europe and China; charging infrastructure, costs, and supply align to accelerate electric car market penetration.

Key Points

The EV tipping point is when fully electric cars reach about 5% of new sales, triggering rapid S-curve adoption.

✅ 5% of new car sales marks start of mass adoption

✅ Follows S-curve seen in phones, LEDs, internet

✅ Barriers ease: charging, cost declines, model availability

Many people of a certain age can recall the first time they held a smartphone. The devices were weird and expensive and novel enough to draw a crowd at parties. Then, less than a decade later, it became unusual not to own one.

That same society-altering shift is happening now with electric vehicles, according to a Bloomberg analysis of adoption rates around the world. The US is the latest country to pass what’s become a critical EV tipping point: an EV inflection point when 5% of new car sales are powered only by electricity. This threshold signals the start of mass EV adoption, the period when technological preferences rapidly flip, according to the analysis.

For the past six months, the US joined Europe and China — collectively the three largest car markets — in moving beyond the 5% tipping point, as recent U.S. EV sales indicate. If the US follows the trend established by 18 countries that came before it, a quarter of new car sales could be electric by the end of 2025. That would be a year or two ahead of most major forecasts.

How Fast Is the Switch to Electric Cars?
19 countries have reached the 5% tipping point, and an earlier-than-expected shift is underway—then everything changes

Why is 5% so important? 
Most successful new technologies — electricity, televisions, mobile phones, the internet, even LED lightbulbs — follow an S-shaped adoption curve, with EVs going from zero to 2 million in five years according to market data. Sales move at a crawl in the early-adopter phase, then surprisingly quickly once things go mainstream. (The top of the S curve represents the last holdouts who refuse to give up their old flip phones.)

Electric cars inline tout
In the case of electric vehicles, 5% seems to be the point when early adopters are overtaken by mainstream demand. Before then, sales tend to be slow and unpredictable, and still behind gas cars in most markets. Afterward, rapidly accelerating demand ensues.

It makes sense that countries around the world would follow similar patterns of EV adoption. Most impediments are universal: there aren’t enough public chargers, grid capacity concerns linger, the cars are expensive and in limited supply, buyers don’t know much about them. Once the road has been paved for the first 5%, the masses soon follow.

Thus the adoption curve followed by South Korea starting in 2021 ends up looking a lot like the one taken by China in 2018, which is similar to Norway after its first 5% quarter in 2013. The next major car markets approaching the tipping point this year include Canada, Australia, and Spain, suggesting that within a decade many drivers could be in EVs worldwide. 

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EV Battery Manufacturing Emissions debunk viral claims with lifecycle analysis, showing lithium-ion production CO2 depends on grid mix and is offset by zero tailpipe emissions and renewable-energy charging over typical vehicle miles.

Key Points

EV lithium-ion pack production varies by grid mix; ~1-2 years of driving, then offset by zero tailpipe emissions.

✅ Battery CO2 depends on electricity mix and factory efficiency.

✅ 75 kWh pack ~4.5-7.5 t CO2; not equal to 8 years of driving.

✅ Lifecycle analysis: EVs cut GHG vs gas, especially with renewables.

Electric vehicles are touted as an environmentally friendly alternative to gasoline powered cars, but one Facebook post claims that the benefits are overblown, despite fact-checks of charging math to the contrary, and the vehicles are much more harmful to the planet than people assume.

A cartoon posted to Facebook on April 29, amid signs the EV era is arriving in many markets, shows a car in one panel with "diesel" written on the side and the driver thinking "I feel so dirty." In another panel, a car has "electric" written on its side with the driver thinking "I feel so clean."

However, the electric vehicle is shown connected to what appears to be a factory that’s blowing dark smoke into the air.

Below the cartoon is a caption that claims "manufacturing the battery for one electric car produces the same amount of CO2 as running a petrol car for eight years."

This isn’t a new line of criticism against electric vehicles, and reflects ongoing opinion on the EV revolution in the media. Similar Facebook posts have taken aim at the carbon dioxide produced in the manufacturing of electric cars — specifically the batteries — to make the case that zero emissions vehicles aren’t necessarily clean.

Full electric vehicles require a large lithium-ion battery to store energy and power the motor that propels the car, according to Insider. The lithium-ion battery packs in an electric car are chemically similar to the ones found in cell phones and laptops.

Because they require a mix of metals that need to be extracted and refined, lithium-ion batteries take more energy to produce than the common lead-acid batteries used in gasoline cars to help start the engine.

How much CO2 is emitted in the production depends on where the lithium-ion battery is made — or specifically, how the electricity powering the factory is generated, and national electricity profiles such as Canada's 2019 mix help illustrate regional differences — according to Zeke Hausfather, a climate scientist and director of climate and energy at the Breakthrough Institute, an environmental research think tank.

Producing a 75 kilowatt-hour battery for a Tesla Model 3, considered on the larger end of batteries for electric vehicles, would result in the emission of 4,500 kilograms of CO2 if it was made at Tesla's battery factory in Nevada. That’s the emissions equivalent to driving a gas-powered sedan for 1.4 years, at a yearly average distance of 12,000 miles, Hausfather said.

If the battery were made in Asia, manufacturing it would produce 7,500 kg of carbon dioxide, or the equivalent of driving a gasoline-powered sedan for 2.4 years — but still nowhere near the eight years claimed in the Facebook post. Hausfather said the larger emission amount in Asia can be attributed to its "higher carbon electricity mix." The continent relies more on coal for energy production, while Tesla’s Nevada factory uses some solar energy. 

"More than half the emissions associated with manufacturing the battery are associated with electricity use," Hausfather said in an email to PolitiFact. "So, as the electricity grid decarbonizes, emissions associated with battery production will decline. The same is not true for sedan tailpipe emissions."

The Facebook post does not mention the electricity needs and CO2 impact of factories that build gasoline or diesel cars and their components. 

Another thing the Facebook post omits is that the CO2 emitted in the production of the battery can be offset over a short time in an electric car by the lack of tailpipe emissions when it’s in operation. 

The Union of Concerned Scientists found in a 2015 report that taking into account electricity sources for charging, which have become greener in all states since then, an electric vehicle ends up reducing greenhouse gas emissions by about 50% compared with a similar size gas-powered car.

A midsize vehicle completely negates the carbon dioxide its production emits by the time it travels 4,900 miles, according to the report. For full size cars, it takes 19,000 miles of driving.

The U.S. Energy Department’s Office of Energy Efficiency and Renewable Energy also looked at the life cycle of electric vehicles — which includes a car’s production, use and disposal — and concluded they produce less greenhouse gases and smog than gasoline-powered vehicles, a conclusion consistent with independent analyses from consumer and energy groups.

The agency also found drivers could further lower CO2 emissions by charging with power generated by a renewable energy source, and drivers can also save money in the long run with EV ownership. 

Our ruling
A cartoon shared on Facebook claims the carbon dioxide emitted from the production of one electric car battery is the equivalent to driving a gas-powered vehicle for eight years.

The production of lithium-ion batteries for electric cars emits a significant amount of carbon dioxide, but nowhere near the level claimed in the cartoon. The emissions from battery production are equivalent to driving a gasoline car for one or two years, depending on where it’s produced, and those emissions are effectively offset over time by the lack of tailpipe emissions when the car is on the road. 

We rate this claim Mostly False.    

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Germany Solar Boom is accelerating amid energy security pressures, with photovoltaic capacity surging as renewables displace gas. Policy incentives, grid upgrades, and storage, plus agrivoltaics and rooftop systems, position solar as cornerstone of decarbonization.

Key Points

Germany Solar Boom is rapid PV growth enhancing energy security, cutting emissions, and expanding domestic, low-carbon electricity.

✅ Targets 250 GW PV by 2032 to meet rising electricity demand.

✅ Rooftop, agrivoltaics, and BIPV reduce land use and grid stress.

✅ Diversifies supply chains beyond China; boosts storage and flexibility.

Europe is in crisis mode. Climate change, increasing demand for energy, the war in Ukraine and Russia's subsequent throttling of oil and gas deliveries have pushed the continent into a new era.

Germany has been trapped in a corner. The country relies heavily on cheap imported natural gas to run its industries. Some power plants also use gas to produce electricity. Finding enough substitutes quickly is nearly impossible.

Ideas to prevent a looming power crisis in Germany have ranged from reducing demand to keeping nuclear power plants online past their official closing date at the end of the year. Large wind turbines are doing their part, but many people don't want them in their backyard.

Green activists have long believed renewable energies are the answer to keeping the lights on. But building up these capabilities takes time. Now many experts once again see solar power as a shining light at the end of the tunnel, as global renewables set fresh records worldwide. Some say a solar boom is in the making.

Before the war in Ukraine put energy security at the forefront, the new German government had already pledged that renewable sources — wind and solar — would make up 80% of electricity production by 2030 instead of 42% today. By 2035, electricity generation should be carbon neutral.

It is an ambitious plan, but the country seems to be on its way. July was the third month in a row when solar power output soared to a record level, trade publication pv magazine reported, and clean energy's share reached about 50% in Germany according to recent assessments. For the month, photovoltaic (PV) systems generated 8.23 ​​terawatt hours of power, around a fifth of net electricity production. They were only behind lignite-fired power plants, which brought in nearly 22% of net production. 

Solar cells hanging on a modular solar house during the Solar Decathlon Europe in Wuppertal, Germany
Solar panels can come in many different shapes and sizes, and be used in many different ways

Last year, Germany added more than 5 gigawatts of solar power capacity, 10% more than in 2020. That took the total solar power capacity to 59 gigawatts, overtaking installed onshore wind power capacity in Germany, pv magazine said in January. Last year's solar production was about 9% of gross electricity consumption, according to Harry Wirth, who is head of photovoltaic modules and power plant research at the Fraunhofer Institute for Solar Energy Systems in Freiburg.

"For 2032, the government target is around 250 gigawatts of solar energy. According to their estimates, electricity consumption will increase to 715 terawatt hours by 2030," Wirth told DW. A different study by consultancy McKinsey says this is the lower limit. "So if we assume 730 terawatt hours for 2032, we would be at around 30% photovoltaic electricity in gross electricity consumption," he added. 

The energy expert also envisions great potential to install more solar panels without taking up valuable land. Besides adding them on top of parking garages or buildings, photovoltaic parts can be integrated into the exterior of buildings or even on the outside of e-vehicles. This would "not only produce electricity on surfaces already in use, but it would also create synergies in its own application," said Wirth.

Foreign investment in German solar
It is not just researchers that are taking note. Big businesses are stepping in too. In July, Portuguese clean energy firm EDP Renovaveis (EDPR) announced it had agreed to take a 70% interest in Germany's Kronos Solar Projects, a solar developer, for €250 million ($254 million).

The Munich-based company has a portfolio of 9.4 gigawatts of solar projects in different stages of development in Germany, France, the Netherlands and the UK, according to the press release announcing the purchase. Germany represents close to 50% of the acquired solar portfolio.

EDPR, which claims to be the fourth-largest renewable energy producer worldwide, said it generated 17.8 terawatt hours of clean energy in the first half of 2022.

Miguel Stilwell d'Andrade, chief executive of EDPR and its parent EDP, said they have great expectations from Germany in particular as "it is a key market in Europe with reinforced renewable growth targets." 

Fabian Karthaus is one of the first farmers in Germany to grow raspberries and blueberries under photovoltaic panels. His solar field near the city of Paderborn in northwestern Germany is 0.4 hectares (about 1 acre), but he would like to expand it to 10. He could then generate enough electricity for around 4,000 households — and provide more berries for supermarkets.

Germany was once a leader in solar power. For many years the country enjoyed a large share of the world's total solar capacities. A lot of that early success had to do with innovative government support. That support, however, proved too successful for some as a fall in wholesale electricity prices in Northern Europe hurt the profits of power companies, leading to calls for a change in the rules.

Updated regulations, and changes to the Renewable Energy Sources Act that reduced feed-in tariffs slowed things down. Feed-in tariffs usually grant long-term grid access and above-market price guarantees in an effort to support fledgling industries.

With less direct financial incentives, the industry was neglected leaving it open for competitors. The pace of solar infrastructure growth has also been hampered by issues of red tape, supply chain backlogs, a lack of skilled technicians and, despite solar-plus-storage now undercutting conventional power in Germany, a shortage of storage for electricity produced when it is not needed.

Now the war in Ukraine and Europe's dependency on Russia is refocusing efforts and "will strengthen the determination for an ambitious PV expansion," said Wirth. But the biggest challenge to the region's solar industry remains China.

Public buildings can play a big role, not just because of their size, but because the government is in charge of them

An overreliance on China
China took an early interest in photovoltaic technology and soon galloped past countries like the US, Japan and Germany thanks to huge state subsidies that manufacturers enjoyed. Today, it has become the place to go for all things solar, even as Europe turns to US solar equipment suppliers to diversify procurement.

A new report from the International Energy Agency puts it into numbers. "China has invested over $50 billion in new PV supply capacity — 10 times more than Europe — and created more than 300,000 manufacturing jobs across the solar PV value chain since 2011."

Today China has over 80% of all solar panel manufacturing capacity and is home to the top-10 suppliers of photovoltaic manufacturing equipment. Such a high concentration has led to some incredible realities, like the fact that "one out of every seven panels produced worldwide is manufactured by a single facility," according to the report.

These economies of scale have brought down costs, and the country can make solar components 35% cheaper than in Europe. This gives China outsized power and makes the industry susceptible to supply chain bottlenecks. To diversify the industry and get back some of this market, Europe needs to invest in innovation and make solar growth a top priority.

Germany has several high-tech photovoltaic manufacturers and research institutes. But it only has one manufacturer of solar cells specializing in high-performance heterojunction technology, says Wirth. Yet even though the European photovoltaic industry is fragmented and not what it once was, he is still counting on big demand for solar technology in the foreseeable future, with markets like Poland accelerating adoption across the region. 

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Vehicle-to-Home (V2H) Power enables EVs to act as backup generators and home batteries, using bidirectional charging, inverters, and rooftop solar to cut energy costs, stabilize the grid, and provide resilient, outage-proof electricity.

Key Points

Vehicle-to-Home (V2H) Power lets EV batteries run household circuits via bidirectional charging and an inverter.

✅ Cuts energy bills using solar, time-of-use rates, and storage

✅ Provides resilient backup during outages, storms, and blackouts

✅ Enables grid services via V2G/V2H with smart chargers

When the power went out at Nate Graham’s New Mexico home last year, his family huddled around a fireplace in the cold and dark. Even the gas furnace was out, with no electricity for the fan. After failing to coax enough heat from the wood-burning fireplace, Graham’s wife and two children decamped for the comfort of a relative’s house until electricity returned two days later.

The next time the power failed, Graham was prepared. He had a power strip and a $150 inverter, a device that converts direct current from batteries into the alternating current needed to run appliances, hooked up to his new Chevy Bolt, an electric vehicle. The Bolt’s battery powered his refrigerator, lights and other crucial devices with ease. As the rest of his neighborhood outside Albuquerque languished in darkness, Graham’s family life continued virtually unchanged. “It was a complete game changer making power outages a nonissue,” says Graham, 35, a manager at a software company. “It lasted a day-and-a-half, but it could have gone much longer.”

Today, Graham primarily powers his home appliances with rooftop solar panels and, when the power goes out, his Chevy Bolt. He has cut his monthly energy bill from about $220 to $8 per month. “I’m not a rich person, but it was relatively easy,” says Graham “You wind up in a magical position with no [natural] gas, no oil and no gasoline bill.”

Graham is a preview of what some automakers are now promising anyone with an EV: An enormous home battery on wheels that can reverse the flow of electricity to power the entire home through the main electric panel.

Beyond serving as an emissions-free backup generator, the EV has the potential of revolutionizing the car’s role in American society, with California grid programs piloting vehicle-to-grid uses, transforming it from an enabler of a carbon-intensive existence into a key step in the nation’s transition into renewable energy.

Home solar panels had already been chipping away at the United States’ centralized power system, forcing utilities to make electricity transfer a two-way street. More recently, home batteries have allowed households with solar arrays to become energy traders, recharging when electricity prices are low, replacing grid power when prices are high, and then sell electricity back to the grid for a profit during peak hours.

But batteries are expensive. Using EVs makes this kind of home setup cheaper and a real possibility for more Americans as the American EV boom accelerates nationwide.

So there may be a time, perhaps soon, when your car not only gets you from point A to point B, but also serves as the hub of your personal power plant.

I looked into new vehicles and hardware to answer the most common questions about how to power your home (and the grid) with your car.

Why power your home with an EV battery

America’s grid is not in good shape. Prices are up and reliability is down, and many state power grids face new challenges from rising EV adoption. Since 2000, the number of major outages has risen from less than two dozen to more than 180 per year, based on federal data, the Wall Street Journal reports. The average utility customer in 2020 endured about eight hours of power interruptions, double the previous decade.

Utilities’ relationship with their customers is set to get even rockier. Residential electricity prices, which have risen 21 percent since 2008, are predicted to keep climbing as utilities spend more than $1 trillion upgrading infrastructure, erecting transmission lines for renewable energy and protecting against extreme weather, even though grids can handle EV loads with proper management and planning.

U.S. homeowners, increasingly, are opting out. About 8 percent of them have installed solar panels. An increasing number are adding home batteries from companies such as LG, Tesla and Panasonic. These are essentially banks of battery cells, similar to those in your laptop, capable of storing energy and discharging electricity.

EnergySage, a renewable energy marketplace, says two-thirds of its customers now request battery quotes when soliciting bids for home solar panels, and about 15 percent install them. This setup allows homeowners to declare (at least partial) independence from the grid by storing and consuming solar power overnight, as well as supplying electricity during outages.

But it doesn’t come cheap. The average home consumes about 20 kilowatt-hours per day, a measure of energy over time. That works out to about $15,000 for enough batteries on your wall to ensure a full day of backup power (although the net cost is lower after incentives and other potential savings).

How an EV battery can power your home

Ford changed how customers saw their trucks when it rolled out a hybrid version of the F-150, says Ryan O’Gorman of Ford’s energy services program. The truck doubles as a generator sporting as many as 11 outlets spread around the vehicle, including a 240-volt outlet typically used for appliances like clothes dryers. During disasters like the 2021 ice storm that left millions of Texans without electricity, Ford dealers lent out their hybrid F-150s as home generators, showing how mobile energy storage can bring new flexibility during outages.

The Lightning, the fully electric version of the F-150, takes the next step by offering home backup power. Under each Lightning sits a massive 98 kWh to 131 kWh battery pack. That’s enough energy, Ford estimates, to power a home for three days (10 days if rationing). “The vehicle has an immense amount of power to move that much metal down the road at 80 mph,” says O’Gorman.

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California NEM-3 Tariff ushers a successor Net Energy Metering framework, revising export compensation, TOU rates, and non-bypassable charges to balance ratepayer impacts, rooftop solar growth, and energy storage adoption across diverse communities.

Key Points

The CPUC's successor NEM policy redefining export credits and rates to sustain customer-sited solar and storage.

✅ Sets export compensation methodology beyond NEM 2.0

✅ Aligns TOU rates and non-bypassable charges with costs

✅ Encourages solar-plus-storage adoption and equity access

The California Public Utilities Commission (CPUC) has officially commenced its “NEM-3” proceeding, which will establish the successor Net Energy Metering (NEM) tariff to the “NEM 2.0” program in California. This is a highly anticipated, high-stakes proceeding that will effectively modify the rules for the NEM tariff in California, amid ongoing electricity pricing changes that affect residential rooftop solar – arguably the single most important policy mechanism for customer-sited solar over the last decade.

The CPUC’s recent order instituting rule-making (OIR) filing stated that “the major focus of this proceeding will be on the development of a successor to existing NEM 2.0 tariffs. This successor will be a mechanism for providing customer-generators with credit or compensation for electricity generated by their renewable facilities that a) balances the costs and benefits of the renewable electrical generation facility and b) allows customer-sited renewable generation to grow sustainably among different types of customers and throughout California’s diverse communities.”

This successor tariff proceeding was initiated by Assembly Bill 327, which was signed into law in October of 2013. AB 327 is best known as the legislation that directed the CPUC to create the “NEM 2.0” successor tariff, which was adopted by the CPUC in January of 2016.

The original Net Energy Metering program in California (“NEM 1.0”) effectively enabled full-retail value net metering “allowing NEM customers to be compensated for the electricity generated by an eligible customer-sited renewable resource and fed back to the utility over an entire billing period.” Under the NEM 2.0 tariff, customers were required to pay charges that aligned them more closely with non-NEM customer costs than under the original structure. The main changes adopted when the NEM 2.0 was implemented were that NEM 2.0 customer-generators must: (i) pay a one-time interconnection fee; (ii) pay non-bypassable charges on each kilowatt-hour of electricity they consume from the grid; and (iii) customers were required to transfer to a time-of-use (TOU) rate, with potential changes to electric bills for many customers.

NEM 2.0

The commencement of the NEM-3 OIR was preceded by the publishing of a 318-page Net Energy Metering 2.0 Lookback Study, which was published by Itron, Verdant Associates, and Energy and Environmental Economics. The CPUC-commissioned study had been widely anticipated and was expected to act as the starting reference point for the successor tariff proceeding. Verdant also hosted a webinar, which summarized the study’s inputs, assumptions, draft findings and results.

The study utilized several different tests to study the impact of NEM 2.0. The cost effectiveness analysis tests, which estimate costs and benefits attributed to NEM 2.0 include: (i) total resource cost test, (ii) participant cost test, (iii) ratepayer impact measure test, and (iv) program administrator test. The evaluation also included a cost of service analysis, which estimates the marginal cost borne by the utility to serve a NEM 2.0 customer.

The opening paragraph of the report’s executive summary stated that “overall, we found that NEM 2.0 participants benefit from the structure, while ratepayers see increased rates.” In every test that the author’s conducted the results generally supported this conclusion for residential customers. There were some exceptions in their findings. For example, in the cost of service analysis the report stated that “residential customers that install customer-sited renewable resources on average pay lower bills than the utility’s cost to serve them. On the other hand, nonresidential customers pay bills that are slightly higher than their cost of service after installing customer-sited renewable resources. This is largely due to nonresidential customer rates having demand charges (and other fixed fees), and the lower ratio of PV system size to customer load when compared to residential customers.”

Similar debates over solar rate design, including Massachusetts solar demand charges, highlight how demand charges and TOU decisions can affect customer economics.

NEM-3 timeline

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The preliminary schedule that the CPUC laid out in its OIR estimates that the proceeding will take roughly 15 months in total, starting with a November 2020 pre-hearing conference.

The real meat of the proceeding, where parties will present their proposals for what they believe the successor tariff should be, as the state considers revamping electricity rates to clean the grid, and really show their hand will not begin until the Spring of 2021. So we’re still a little ways away from seeing the proposals that the key parties to this proceeding, like the Investor Owned Utilities (PG&E, SCE, SDG&E), solar and storage advocates such as SEIA, CALSSA, Vote Solar, and ratepayer advocates like TURN) will submit.

While the outcome for the new successor NEM tariff is anyone’s guess at this point, some industry policy folks are starting to speculate. We think it is safe to assume that the value of exported energy will get reduced, with debates over income-based utility charges also influencing rate design. How much and the mechanism for how exports get valued remains to be seen. Based on the findings from the lookback study, it seems like the reduction in export value will be more severe than what happened when NEM 2.0 got implemented. In NEM 2.0, non-bypassable charges, which are volumetric charges that must be paid on all imported energy and cannot be netted-out by exports, only equated to roughly $0.02 to $0.03/kWh.

Given that the value of exports will almost certainly get reduced, we expect that to be bullish for energy storage as America goes electric and load shapes evolve. Energy storage attachment rates with solar are already steadily rising in California. By the time NEM-3 starts getting implemented, likely in 2022, we think storage attachment rates will likely escalate further.

We would not be surprised to see future storage attachment rates in California look like the Hawaiian market today, which are upwards of 80% for certain types of customers and applications. Two big questions on our mind are: (i) will the NEM 3.0 rules be different for different customer class: residential, CARE (e.g., low-income or disadvantaged communities), and commercial & industrial; (ii) will the CPUC introduce some sort of glidepath or phased in implementation approach?

The outcome of this proceeding will have far reaching implications on the future of customer-sited solar and energy storage in California. The NEM-3 outcome in California may likely serve as precedent for other states, as California exports its energy policies across the West, and utility territories that are expected to redesign their Net Energy Metering tariffs in the coming years.

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