What if your solar panels produce more electricity than your home can use? Do you get paid the same rate your utility charges you—or much less?
That is the big question California homeowners need to understand in 2026.
California’s old Net Energy Metering (NEM) 1.0 and NEM 2.0 programs made rooftop solar especially attractive because excess electricity exported to the grid could earn credits close to the retail electricity rate. But things changed with Net Billing Tariff (NBT), commonly called NEM 3.0.
Under NEM 3.0, new solar customers generally receive a separate export credit for electricity sent to the grid rather than a one-for-one retail-rate credit. The California Public Utilities Commission (CPUC) says NEM tariffs are closed to new enrollments, while the newer NBT applies to customers submitting qualifying interconnection applications from April 15, 2023 onward.
And here’s the important part:
The electricity you use directly at home can be worth far more than the electricity you export.
So, if you’re installing solar in California in 2026, understanding NEM 3.0 can make a major difference to your system size, battery decision and long-term savings.
Let’s break it down.
What Is Net Metering 3.0?
Despite the popular name NEM 3.0, California’s current program is officially known as the Net Billing Tariff or Solar Billing Plan.
It replaced NEM 2.0 for new customers.
The CPUC adopted the Net Billing Tariff in December 2022, with the new tariff applying to customers who submit an interconnection application on or after April 15, 2023.
The basic idea is simple:
- Your solar panels generate electricity.
- Your home uses electricity first.
- If your panels produce more than your home needs, the excess can flow to the grid.
- Your utility provides a financial credit for that exported electricity.
- When your home needs electricity from the grid, you pay your normal import rate.
But there is an important difference.
The export credit isn’t normally equal to the retail price you pay for electricity.
The CPUC uses its Avoided Cost Calculator (ACC) to determine the value of exported energy, taking into account the value of electricity to the grid at different times.
NEM 2.0 vs NEM 3.0: What’s the Difference?
This is where many homeowners become confused.
Under older NEM programs, excess solar could receive credits based on the retail electricity rate. The CPUC explains that under NEM tariffs, exported generation received bill credits at retail rates, including applicable generation, distribution and transmission components.
NEM 3.0 changed that model.
| Feature | NEM 2.0 | NEM 3.0 / NBT |
|---|---|---|
| New enrollment | Closed | Current structure for new qualifying customers |
| Export compensation | Retail-rate credits | Time-dependent export credits |
| Value of excess solar | Higher | Generally lower |
| Battery importance | Helpful | Much more important |
| Best strategy | Export excess | Use/store more solar at home |
| Official name | Net Energy Metering | Net Billing Tariff |
| Start for new applications | — | April 15, 2023 |
The difference can be significant.
EnergySage estimates that California’s transition to NEM 3.0 reduced compensation for exported solar by roughly 75% compared with the previous structure, although the exact value varies by utility, time and customer tariff.
That’s why comparing NEM 2.0 and NEM 3.0 as if they’re the same program can lead to a bad solar investment decision.
How Much Can You Sell Solar Electricity Back to the Grid?
Here’s the tricky part.
There isn’t one universal NEM 3.0 sell-back rate for every California homeowner.
Your export compensation can depend on factors such as:
- Utility
- Time of day
- Season
- Export-credit schedule
- Customer tariff
- Interconnection/application vintage
The CPUC’s export compensation framework is based on the value of electricity to the grid rather than simply giving you the retail rate you would otherwise pay.
For example, imagine your utility charges you:
$0.35 per kWh
for electricity you purchase.
You might assume that exporting 1 kWh should earn you $0.35.
That’s not how NEM 3.0 generally works.
Your export credit could be substantially lower than the retail price.
Simple Example
Suppose your solar system produces an extra:
10 kWh
during a particular period.
If your applicable export credit were:
$0.08/kWh
your credit would be:
10 × $0.08 = $0.80
But if you had used those 10 kWh inside your home instead of exporting them, their economic value could be much higher because you would avoid purchasing electricity at your retail import rate.
If your avoided retail purchase rate were $0.35/kWh:
10 × $0.35 = $3.50
That’s a huge difference.
This is the fundamental economics behind NEM 3.0.
Why Self-Consumption Matters More Under NEM 3.0
This is perhaps the most important lesson for a new California solar owner.
Under NEM 3.0, simply producing huge amounts of electricity isn’t necessarily the best strategy.
Instead, you want to maximize the amount of solar energy that your home actually uses.
Think of your solar electricity as having two possible destinations:
Option 1: Use It
Solar power runs:
- Air conditioning
- Refrigerator
- Washing machine
- Dishwasher
- Water heater
- EV charger
- Pool equipment
- Home appliances
You avoid buying that electricity from the utility.
Option 2: Export It
If your home doesn’t need the electricity, it goes to the grid.
You receive an export credit.
The problem?
That credit may be considerably lower than your retail electricity cost.
That’s why the CPUC’s consumer guidance emphasizes that most solar-bill savings come from using solar energy in the home, while additional savings come from credits for excess electricity sent to the grid.
Is a Solar Battery Worth It Under NEM 3.0?
For many homeowners, this is where the equation gets interesting.
Imagine your solar panels produce a lot of electricity at noon.
But you’re at work.
Your house only needs 2 kW.
Your solar system is producing 7 kW.
That leaves approximately:
5 kW of excess production.
Without storage, much of that excess could be exported.
With a battery, you could store some of it.
Then, when you return home in the evening and electricity demand rises, the battery can discharge.
Instead of:
Solar → Grid
you can achieve:
Solar → Battery → Home
That can be considerably more valuable when evening electricity imports are expensive.
The CPUC specifically designed the Net Billing Tariff to encourage greater adoption of energy storage alongside solar.
NEM 3.0 and Batteries: A Simple Example
Let’s imagine a home with:
- 8 kW solar system
- 20 kWh daily solar production
- 12 kWh daytime household consumption
- 8 kWh excess production
Without a battery:
12 kWh → Home
8 kWh → Grid
With a battery:
12 kWh → Home
8 kWh → Battery
Later:
Battery → Home
That means less electricity needs to be purchased from the utility after sunset.
Of course, real-world results depend on battery capacity, inverter efficiency, household consumption, weather, utility rates and battery operating limits.
But the concept is straightforward.
Store cheap solar now. Avoid expensive grid electricity later.
Does NEM 3.0 Mean You Can Actually “Sell” Electricity?
Technically, homeowners should be careful with the wording.
You’re generally not operating a miniature power company.
Instead, the utility provides bill credits or compensation for exported electricity under the applicable tariff.
The CPUC describes NEM/NBT programs in terms of financial credits for electricity exported to the grid.
So when people say:
“I’m selling my solar electricity back to the grid.”
what they usually mean is:
“I’m exporting excess solar electricity and receiving a utility bill credit.”
That distinction matters because the credit isn’t necessarily equal to cash deposited into your bank account.
What Determines Your NEM 3.0 Export Rate?
Your actual export value can depend on several factors.
1. Your Utility
California doesn’t have one single electricity company.
Major utilities include:
- PG&E
- SCE
- SDG&E
Other utilities and community-choice arrangements can also affect how your billing works.
For example, PG&E publishes Solar Billing Plan export-credit values supplied through the CPUC framework.
SCE also publishes specific export-pricing schedules for different NBT customer vintages, including customers who applied in 2026.
2. Time of Day
Your exported electricity can have different values depending on when it reaches the grid.
This is one of the most important changes compared with the old one-for-one concept.
Electricity isn’t equally valuable at every hour.
A kWh exported when the grid urgently needs electricity can be more valuable than one exported when solar production is already abundant.
The CPUC’s Avoided Cost Calculator accounts for the value of electricity at different times.
3. Your Customer Vintage
When you applied for the tariff can also matter.
SCE, for example, identifies different Solar Billing Plan vintages such as NBT23, NBT24, NBT25 and NBT26, with fixed-price periods for qualifying customers.
So two California homeowners could have solar systems in the same city but different export-credit schedules.
Can You Make Money With NEM 3.0?
Yes, but “making money” isn’t the best way to think about residential solar under NEM 3.0.
The main objective is usually to reduce your electricity bill.
Your solar system can save money in two major ways:
Savings #1: Avoided Electricity Purchases
You generate electricity and consume it yourself.
This can be extremely valuable because you’re avoiding retail electricity purchases.
Savings #2: Export Credits
Your system generates more than your home currently needs.
The excess goes to the grid.
You receive an applicable export credit.
The second category is generally less valuable under NEM 3.0 than the first.
So the winning strategy is usually higher self-consumption, not maximum exports.
Should You Oversize Your Solar System Under NEM 3.0?
This is where homeowners need to be careful.
Under older net-metering economics, maximizing annual solar production could make sense because excess generation could receive highly valuable credits.
Under NEM 3.0, building a giant system simply to export lots of electricity may not provide the same financial return.
Instead, your installer should consider:
- Annual electricity usage
- Hourly electricity consumption
- Roof orientation
- Roof shading
- Utility rate
- Battery capacity
- EV charging
- HVAC usage
- Future electricity demand
- Export compensation
Expert Tip
Don’t size your system only from your annual kWh usage.
Look at your hourly consumption profile.
A household using most electricity after sunset has a very different solar-storage requirement from a household operating appliances during the middle of the day.
How to Increase Your NEM 3.0 Solar Savings
You don’t necessarily need more panels.
Sometimes you simply need to use your existing solar electricity more intelligently.
Run Appliances During Solar Hours
Try running energy-intensive appliances when your panels are producing strongly.
Examples:
- Washing machine
- Dishwasher
- Pool pump
- Electric water heater
- EV charger
Instead of exporting electricity at a lower credit value, you may be able to use it directly.
Charge Your EV During the Day
If you own an electric vehicle, daytime charging can dramatically increase solar self-consumption.
For example:
Solar → EV
can be more financially attractive than:
Solar → Grid
when the export credit is lower than the retail electricity rate.
Use Battery Storage
A battery allows you to shift solar electricity from daytime to evening.
This is one of the main reasons batteries have become more important under California’s current Solar Billing Plan.
Automate Your Home
Smart energy management can help shift electricity consumption toward periods when solar production is highest.
For example, you could schedule:
10 AM–3 PM
for selected appliances or EV charging.
Small changes can add up.
NEM 3.0 vs Battery: Which Is Better?
Here’s a simple way to think about it:
| Strategy | What Happens to Excess Solar? | Potential Value |
|---|---|---|
| Export immediately | Sent to grid | Lower under NEM 3.0 |
| Use directly | Powers your home | Often highest |
| Store in battery | Used later | Potentially high |
| Oversize solar without storage | More exports | May have weaker economics |
The battery doesn’t create electricity.
It changes when you use it.
That’s the key.
What Happens If You Produce More Electricity Than You Use All Year?
This is another area where people often misunderstand NEM 3.0.
Producing more solar electricity than your home consumes doesn’t necessarily mean the utility will pay you retail electricity rates for every extra kWh.
The applicable rules depend on your tariff and utility.
Some programs provide specific mechanisms for excess generation and net-surplus compensation.
For example, SCE describes a Net Surplus Compensation Rate for qualifying NEM customers who produce more electricity than they consume over the relevant period.
However, don’t assume the rules for legacy NEM customers apply to a new 2026 NBT customer.
That’s a common mistake.
Is NEM 3.0 Bad for Solar Homeowners?
Not necessarily.
It is simply a different economic model.
The old system strongly rewarded exporting excess electricity.
The new system puts greater emphasis on:
self-consumption + storage + time-of-use behavior.
The CPUC says the newer tariff was designed to encourage solar paired with storage and improve grid reliability while maintaining a role for distributed solar.
So solar can still make sense.
But the system should be designed differently.
How Much Can a Typical Homeowner Save?
There isn’t one universal number.
Your savings depend on:
- Solar system size
- Electricity consumption
- Utility
- Electricity rates
- Roof orientation
- Shade
- Battery size
- Financing
- Export credits
- Energy usage schedule
- Maintenance and replacement costs
For example, two homes with identical 8 kW solar systems could have very different savings.
Why?
Because one family may use most of its electricity during daylight.
The other may consume most of its electricity after 6 PM.
Same panels. Different economics.
That’s why online calculators should be treated as estimates rather than guarantees.
Expert Tips Before Installing Solar Under NEM 3.0
If I were evaluating a solar proposal in California today, these are the questions I’d ask the installer.
Ask for the exact tariff
Don’t accept:
“You’re on NEM 3.”
Ask for the specific Solar Billing Plan / Net Billing Tariff applicable to your project.
Ask for hourly production estimates
Annual production alone doesn’t tell the whole story.
Ask for battery modeling
Request two scenarios:
Solar without battery
and
Solar + battery
Then compare lifetime savings.
Ask for self-consumption percentage
This tells you how much of your solar generation you’re actually using.
Ask about degradation
Panels lose some production over time.
The financial model should account for this.
Ask about utility assumptions
Make sure the proposal clearly states which electricity rates and export values were used.
Ask for a cash-flow model
Don’t focus only on:
“Your system will save $X per month.”
Ask:
“What are the projected savings over 10, 15 and 25 years after financing costs?”
That’s a much better question.
A Simple NEM 3.0 Calculation
Let’s say your solar system produces:
900 kWh/month
Your home directly uses:
600 kWh
That leaves:
300 kWh
for potential export.
Now imagine your average applicable export credit were:
$0.08/kWh
Your export credits would be:
300 × $0.08 = $24
That’s not insignificant.
But suppose you could shift 150 kWh of that electricity into household consumption or battery charging.
You would then export only:
150 kWh
and use another:
150 kWh
yourself.
If those 150 kWh would otherwise replace electricity costing $0.30/kWh:
150 × $0.30 = $45
in avoided purchases.
The combined economic value can therefore be much better than simply exporting all 300 kWh.
This is why load shifting and battery storage matter so much under NEM 3.0.
What About Solar Panels Without a Battery?
You can still install solar without a battery.
There’s no universal rule saying every new California solar system must have one.
However, the financial case should be modeled carefully.
A battery may make more sense when:
- Your household uses lots of electricity at night
- You have high evening consumption
- Your utility’s export compensation is low
- You want backup power
- You own an EV
- You have high air-conditioning demand
- You want greater energy independence
On the other hand, a battery adds cost, complexity and equipment that eventually may need replacement.
Don’t buy one simply because someone says NEM 3.0 requires it.
Instead, calculate the numbers.
The Biggest NEM 3.0 Mistake Homeowners Make
Here’s the mistake I see in solar discussions all the time:
They focus on how much electricity the panels produce instead of when that electricity is produced and consumed.
Solar isn’t just a production problem.
It’s a timing problem.
Your panels produce most of their energy during daylight.
Your family might consume most of its electricity in the evening.
NEM 3.0 makes that mismatch more important.
A battery can bridge the gap.
Smart appliances can help.
EV charging can help.
Behavior changes can help.
The goal isn’t necessarily:
Produce the maximum electricity possible.
The goal is:
Get the maximum financial value from every kWh your system produces.
Frequently Asked Questions
Is NEM 3.0 still available in California in 2026?
Yes. California’s current framework is officially the Net Billing Tariff, also called the Solar Billing Plan and commonly referred to as NEM 3.0. The CPUC states that NBT applies to customers submitting qualifying interconnection applications on or after April 15, 2023.
Does NEM 3.0 pay retail rates for excess solar?
Generally, no. Unlike legacy NEM structures, export compensation under the Net Billing Tariff is based on applicable export-credit values rather than simply matching the retail electricity rate.
How much does California pay for excess solar?
There is no single statewide NEM 3.0 price per kWh. Export values vary by utility, time and applicable tariff schedule.
Is NEM 3.0 the same as net metering?
No. NEM 3.0 is the common nickname for California’s Net Billing Tariff. The compensation structure is different from legacy net metering.
Is a battery required under NEM 3.0?
Not universally. However, battery storage can significantly improve solar economics for households that would otherwise export large amounts of daytime electricity.
Can I still save money with solar under NEM 3.0?
Yes. Your biggest savings opportunity is generally reducing the amount of electricity you purchase from the utility by using solar energy directly, with export credits providing additional value.
Final Verdict: How Much Can You Sell Back to the Grid?
The short answer is:
You can export your excess solar electricity to the grid, but don’t expect NEM 3.0 to pay you the same retail rate you pay your utility.
That’s the major difference.
Under California’s current Net Billing Tariff, export compensation is based on applicable time-dependent values rather than a simple one-for-one retail credit.
So if you’re installing solar in 2026, I would not build the financial plan around selling huge amounts of electricity back to the grid.
Instead, focus on:
Solar panels + smart energy use + self-consumption + properly sized battery storage.
That combination can make far more sense under the current rules.
And remember one final thing.
The cheapest solar system isn’t always the best solar system.
The better system is the one designed around your electricity usage, utility tariff, roof, battery needs and long-term energy goals.
SEO Information
Primary Keyword: Solar Panel Net Metering 3.0
Secondary Keywords:
- NEM 3.0 explained
- California net metering 2026
- NEM 3.0 sell back rate
- California solar buyback rate
- NEM 3.0 export rate
- California Net Billing Tariff
- solar sell back to grid
- NEM 3.0 vs NEM 2.0
- California solar battery
- NEM 3.0 battery savings
Suggested Meta Title:
Solar Panel Net Metering 3.0 Explained: 2026 Sell-Back Rates
Suggested Meta Description:
Learn how California NEM 3.0 works in 2026, how solar export credits are calculated, how much you can sell back to the grid, and why batteries matter.
Suggested URL Slug:solar-panel-net-metering-3-0-explained
