Best Time to Charge Your EV at Home in California (2026): NEM 3.0 Rates, Cheapest Hours & Real Savings
- Apr 9
- 13 min read
Updated: May 1
A friend of mine recently got his first EV and his first two electricity bills came in at $380 and $360. After backing out his normal household usage, the car was adding about $180 the first month and $160 the second.
His neighbor drives roughly the same miles and pays around $80 a month for charging.
Same neighborhood. Same utility. Same approximate mileage. About $100 difference per month — over $1,000 per year — from one variable: when they plug in.
This is the most common EV cost story in California right now, and it's almost entirely a scheduling problem, not a hardware problem. With NEM 3.0 fully in effect in 2026, the gap between peak and off-peak electricity rates is wider than it's ever been. SCE's peak rate hits 59¢/kWh in summer. SDG&E peaks at around 80¢/kWh. Charge at 6 PM and you're paying those rates. Charge after 9 PM or set a departure timer, and you're paying 12–26¢/kWh on the same grid.
This guide covers the exact cheapest charging windows for PG&E, SCE, and SDG&E, how to automate the schedule so you never have to think about it again, and how the math changes if you have solar.
If your EV charging bill is already high and you want to understand all the factors behind it, Why Your EV Charging Cost Is So High in California 2026 (And 5 Ways to Fix It) covers the full picture.
Quick Answer:
The best time to charge your EV at home in California in 2026 is after 9 PM through early morning (until 3–6 AM depending on your utility), or during midday solar production hours if you have rooftop solar.
Charging during the 4–9 PM peak window costs 3–6x more per kWh than the cheapest available hours on all three major California utilities.
Table of Contents
Why Charging Time Matters More in 2026 Than It Ever Did
Best Charging Hours by Utility: PG&E, SCE, and SDG&E
NEM 3.0 Changes the Math for Solar Owners
Grid-Only vs. Battery Storage: Which Wins Under NEM 3.0?
What It Actually Costs: Real Numbers by Charging Scenario
How to Automate Your Charging Schedule
Best Apps for EV Charging Optimization in California
Installation Considerations Before You Optimize
FAQ
Conclusion
Related Posts
Why Charging Time Matters More in 2026 Than It Ever Did
California's time-of-use pricing has existed for years, but NEM 3.0 made the stakes significantly higher for anyone with — or considering — rooftop solar.
Under the old NEM 2.0 framework, solar owners could export excess daytime production to the grid and receive near-retail credits. Those credits could offset peak-hour draws in the evening, including EV charging. The timing of charging mattered less because the credit system partially smoothed out the rate difference.
Under NEM 3.0 (CPUC Decision 22-12-056, effective April 2023), export credits dropped to approximately 2–8¢/kWh — wholesale-level rates rather than retail. But buying electricity back during peak hours still costs 54–80¢/kWh depending on your utility. The export-import asymmetry is now severe enough that charging strategy has become one of the most financially significant decisions a California EV owner makes.
For households without solar, the same rate gap applies directly: charging during peak hours simply costs 3–6x more per kWh than charging during the cheapest window, with no credit system to soften the difference.
The practical result: two drivers in the same neighborhood, with the same car and the same annual mileage, can have annual charging costs that differ by $1,000–$2,500 based on scheduling alone.
Best Charging Hours by Utility: PG&E, SCE, and SDG&E
PG&E — EV2-A Rate Plan
Cheapest window: Midnight – 3 PM every day (including weekends)
Avoid: 4 PM – 9 PM daily
Partial-peak: 3–4 PM and 9 PM–midnight
2026 approximate rates (summer):
Off-peak: 23–33¢/kWh
Partial-peak: 38–45¢/kWh
Peak: approximately 54¢/kWh
PG&E's EV2-A plan gives California's widest off-peak window — effectively all day except the evening peak. For drivers who come home and plug in immediately, the only required change is setting a departure time or a timer to begin charging after 9 PM.
For solar owners on PG&E:
The 10 AM–3 PM window is the sweet spot. You're in the off-peak rate period and simultaneously at or near peak solar production. Charging then means using your own generated electricity at its highest self-consumption value rather than exporting it for 2–8¢/kWh.
Practical tip:
PG&E's EV2-A plan also has an EV-B option with a separate sub-meter for the charger circuit. This can be worth requesting if your household's general electricity usage puts you in a high consumption tier — the EV charging portion is then billed separately at the lower EV rate.
SCE — TOU-D-PRIME (Electrification Rate)
Cheapest window: 8 AM – 4 PM (off-peak), then again after 9 PM through overnight
Avoid: 4 PM – 9 PM weekdays
Weekends: Generally better — off-peak runs most of the day
2026 approximate rates (summer):
Off-peak: approximately 26¢/kWh
Peak: approximately 59¢/kWh
SCE's peak rate of 59¢/kWh in summer is one of the most significant rate gaps in California. A 40 kWh charging session at 6 PM costs approximately $23.60. The same session starting at 9:30 PM costs approximately $10.40.
For solar owners on SCE:
The 9 AM–3 PM window is ideal. SCE's solar homes can often charge directly from roof production without drawing from the grid at all. This is the scenario where EV charging costs approach zero — you're using electricity that would otherwise be exported at 2–8¢/kWh.
For non-solar SCE customers:
The overnight window (9 PM through early morning) is the most reliable. Weekends offer additional flexibility — SCE's off-peak runs most of Saturday and Sunday, making weekend charging at lower rates relatively easy.
SDG&E — EV-TOU-5 Plan
Cheapest window: Midnight – 6 AM (super off-peak) and 10 AM – 2 PM weekdays
Avoid: 4 PM – 9 PM daily
On-peak warning: SDG&E's peak rate is the highest of the three major California utilities
2026 approximate rates (summer):
Super off-peak (midnight–6 AM): approximately 12¢/kWh
Midday window (10 AM–2 PM weekdays): approximately 20–25¢/kWh
Peak: approximately 80¢/kWh
SDG&E's super off-peak rate of 12¢/kWh is the cheapest available on any major California utility plan — but the peak rate at 80¢/kWh is also the highest. The spread between cheapest and most expensive is more than 6x. For SDG&E customers, charging discipline has the highest financial stakes of any California utility.
For non-solar SDG&E customers:
Midnight–6 AM is the clear winner. Set a departure timer, let the car charge at 12¢/kWh through the night, and don't touch it during the evening. A 60 kWh charge at 12¢ costs $7.20. The same charge at peak rates costs $48.
For solar owners on SDG&E:
The midday window (10 AM–2 PM weekdays) provides an opportunity to combine solar self-consumption with SDG&E's secondary cheap rate window, rather than waiting until midnight.
Utility Comparison: Peak vs. Off-Peak at a Glance
Utility | Plan | Cheapest Window | Off-Peak Rate | Peak Rate | Peak Spread |
PG&E | EV2-A | Midnight – 3 PM | ~23¢/kWh | ~54¢/kWh | 2.3x |
SCE | TOU-D-PRIME | 8 AM – 4 PM / after 9 PM | ~26¢/kWh | ~59¢/kWh | 2.3x |
SDG&E | EV-TOU-5 | Midnight – 6 AM | ~12¢/kWh | ~80¢/kWh | 6.7x |
NEM 3.0 Changes the Math for Solar Owners
If you have rooftop solar, the best time to charge your EV is no longer simply "when grid rates are lowest." It's "when your panels are producing."
Here's why the math shifted under NEM 3.0:
Under NEM 2.0, exporting solar at 3 PM earned you roughly 30–40¢/kWh in bill credits. That made it financially reasonable to export midday solar and pull from the grid later. Under NEM 3.0, that same exported solar earns 2–8¢/kWh. Pulling from the grid in the evening costs 26–59¢/kWh. The round-trip value destruction of export-then-import is now enormous.
The self-consumption math:
Export 1 kWh at 3 PM → earn ~5¢ in export credit
Import 1 kWh at 7 PM → pay ~40¢ (SCE average)
Net cost of that round trip: approximately 35¢ per kWh
Compare that to:
Use 1 kWh of solar directly for EV charging at 1 PM → cost = $0
Net savings vs. grid import: approximately 40¢ per kWh
For a solar household charging 300 kWh/month, shifting just half of that charging (150 kWh) from grid to direct solar self-consumption saves approximately $54–$60/month — $648–$720/year from timing alone.
The practical recommendation for solar owners:
If your car is home during the day, charge between 10 AM and 3 PM. If you commute and the car isn't home during solar production hours, a home battery becomes significantly more valuable — it can store midday solar and release it for overnight EV charging, capturing the self-consumption benefit regardless of when you drive.
For a full breakdown of whether adding battery storage makes financial sense under NEM 3.0, NEM 3.0 California Explained (2026): Solar Costs, Battery Savings & Is It Still Worth It? covers the policy and financial picture in detail.
Grid-Only vs. Battery Storage: Which Wins Under NEM 3.0?
For EV owners evaluating whether battery storage is worth adding, the answer depends heavily on usage pattern and whether you have solar.
Grid-only charging — when it works well:
If you can reliably charge during off-peak hours and don't have solar, grid-only overnight charging is the simplest and lowest-cost approach. At 12–26¢/kWh depending on utility, the cost per mile is already low. A 60 kWh charge at SDG&E's super off-peak rate costs $7.20 — less than a gallon of gas.
Battery storage — when it adds meaningful value:
Under NEM 3.0, a home battery adds value in two scenarios:
Scenario 1: Solar owner who can't charge during the day.
If you commute and the car is away during solar production hours, a battery stores midday solar for overnight EV charging. Without the battery, that solar exports at 2–8¢/kWh. With the battery, it offsets grid purchases at 26–59¢/kWh. The value of the battery is the difference — roughly 20–55¢ per stored kWh, depending on utility.
Scenario 2: Grid-only owner in SDG&E territory.
With peak rates at 80¢/kWh, even a battery that charges from the grid at 12¢/kWh and discharges during peak delivers a 68¢/kWh arbitrage value — enough to meaningfully shorten battery payback periods compared to other utility territories.
For a full analysis of battery storage costs and NEM 3.0 economics, Solar Battery Costs in California 2026: Price Breakdown breaks down the numbers by system and scenario.
What It Actually Costs: Real Numbers by Charging Scenario
Assumptions: EV driving 12,000 miles/year, 3.3 miles/kWh efficiency, approximately 3,636 kWh annual charging demand (303 kWh/month).
Charging Scenario | Rate Used | Monthly Cost | Annual Cost |
Grid peak (6 PM plug-in, SCE) | 59¢/kWh | ~$179 | ~$2,144 |
Grid peak (6 PM plug-in, SDG&E) | 80¢/kWh | ~$242 | ~$2,909 |
Grid off-peak (scheduled, SCE) | 26¢/kWh | ~$79 | ~$945 |
Grid super off-peak (scheduled, SDG&E) | 12¢/kWh | ~$36 | ~$436 |
Solar self-consumption (daytime charging) | ~$0/kWh | ~$0–$15* | ~$0–$180* |
Solar + battery (stored solar, evening discharge) | ~$0/kWh | ~$0–$20* | ~$0–$240* |
*Reflects residual grid draws and fixed utility charges; not zero after solar system costs are factored in.
The headline number:
An SCE customer who switches from peak charging (59¢/kWh) to off-peak (26¢/kWh) saves approximately $1,199/year with no hardware change. A SDG&E customer making the same switch (80¢ to 12¢) saves approximately $2,473/year.
How to Automate Your Charging Schedule
The goal is to set this once and never think about it again. There are three ways to do it, in order of simplicity:
Option 1: Use your EV's native scheduling.
Most modern EVs — Tesla, Ford, Chevy, Hyundai, Kia — have built-in charging schedulers accessible through the vehicle's touchscreen or companion app. Set "charge start time" to 9 PM (or your utility's off-peak start) and "departure time" to when you typically leave in the morning. The car calculates backward and starts charging at the latest possible time to be full by departure.
This is the zero-cost, zero-complexity solution and covers the majority of the savings available. Start here.
Option 2: Use your Level 2 charger's app.
If your Level 2 charger is a networked smart charger (ChargePoint, Emporia, Wallbox), its companion app typically includes TOU scheduling. This has an advantage over the car's built-in scheduler: it can be set to respond to your utility's real-time pricing signals rather than a fixed schedule, and it can integrate with solar monitoring.
Option 3: Use a dedicated optimization app.
NeoCharge is the most California-specific option — it monitors solar production and utility rates in real time and schedules charging to maximize solar self-consumption and minimize grid cost. It's particularly useful for solar owners on NEM 3.0 who want to automate the self-consumption alignment without manually adjusting schedules.
Best Apps for EV Charging Optimization in California
App | Best For | Key Features | Cost |
Your EV's native app (Tesla, Ford, etc.) | All EV owners | Built-in TOU scheduling, departure timer | Free |
NeoCharge | Solar + NEM 3.0 optimization | Solar self-consumption scheduling, export avoidance, NEM 3.0 aware | Free basic / ~$4/month premium |
ChargePoint / Emporia / Wallbox app | Smart charger owners | Dynamic load balancing, TOU integration, consumption monitoring | Free with charger |
Utility apps (PG&E, SCE, SDG&E) | All customers | Real-time rate alerts, usage tracking, plan comparison tools | Free |
The honest recommendation:
Start with your car's own app. It's free, it works, and for most drivers it captures 80–90% of the available savings. Add NeoCharge only if you have solar and want to automate the self-consumption alignment under NEM 3.0 — that's the specific scenario where it adds value that the car's native app doesn't provide.
For a comparison of smart Level 2 chargers with TOU and solar integration built in, Best 7 Level 2 EV Chargers for Home in 2026 (Cost & Reviews) covers the current options in detail.
Installation Considerations Before You Optimize
Scheduling optimization works best when the underlying hardware is set up correctly. A few things worth confirming before relying on any charging schedule:
Confirm your current rate plan.
Log into your utility's account portal and verify which rate plan you're on. If you're on a standard tiered residential rate rather than an EV-specific TOU plan, off-peak scheduling doesn't give you the rate discount automatically — you need to be on a TOU plan first. Request SCE's TOU-D-PRIME, PG&E's EV2-A, or SDG&E's EV-TOU-5.
Level 2 vs. Level 1:
Level 1 charging (120V outlet) is significantly less efficient than Level 2 and runs longer — meaning it overlaps with peak hours more often even with a scheduler. A Level 2 charger completes the same session 5–8x faster, making it much easier to stay within the off-peak window. Installation typically runs $900–$2,200 in California in 2026 including hardware, labor, and permit. For current California utility rebates that can offset that cost, Level 2 EV Charger Rebates in California 2026: How to Apply covers the current programs.
Panel capacity:
A Level 2 charger requires a dedicated 40A circuit. Many California homes built before 1990 have 100A service panels that may not accommodate this without a panel upgrade. A licensed C-10 electrician should perform a load calculation before installation. For cost ranges and the decision framework, Electrical Panel Upgrade for Solar & EV in California (2026) covers what to expect.
Safety note:
Never DIY 240V circuit work. California requires permits for Level 2 charger installation, and unpermitted work can create insurance complications if an electrical issue occurs. Always hire a licensed C-10 electrician and pull the permit.
FAQ
Q: What is the best time to charge my EV at home in California in 2026?
A: For most California drivers: after 9 PM through early morning. For SDG&E customers specifically, midnight–6 AM is the cheapest window at approximately 12¢/kWh. For solar owners, midday (10 AM–3 PM) often provides the best value by using solar production directly rather than exporting it at low NEM 3.0 rates.
Q: How much can switching to off-peak charging save per year?
A: For an SCE customer charging 12,000 miles annually, switching from peak (59¢/kWh) to off-peak (26¢/kWh) saves approximately $1,200/year. For SDG&E customers, the savings are even larger — up to $2,400/year — because the rate gap between peak and super off-peak is 6.7x.
Q: Do I need to switch rate plans to get off-peak savings?
A: Yes. If you're on a standard tiered residential plan, scheduling charging at midnight doesn't automatically give you the lower rate. You need to be enrolled in an EV-specific TOU plan (PG&E EV2-A, SCE TOU-D-PRIME, or SDG&E EV-TOU-5). Contact your utility to switch — it's typically done online and takes effect within 1–2 billing cycles at no cost.
Q: Is it better to charge during the day or at night in California?
A: It depends on whether you have solar. Without solar: overnight off-peak charging is cheapest. With solar: midday charging (10 AM–3 PM) is typically best because it maximizes self-consumption of solar production rather than exporting at low NEM 3.0 rates. If you have solar but can't charge during the day, a home battery bridges the two — storing midday solar for overnight EV charging.
Q: Can I charge directly from solar panels without a battery?
A: Yes, during daylight hours when production is sufficient. This is the highest-value approach under NEM 3.0 because it avoids both grid purchase costs and low-value solar export. Without a battery, timing matters — charging only works from solar during production hours (roughly 9 AM–4 PM depending on season and roof orientation).
Q: How much does a full EV charge cost in California in 2026?
A: At SDG&E's super off-peak rate (12¢/kWh), a 60 kWh charge costs approximately $7.20. At SCE's off-peak rate (26¢/kWh), the same charge costs $15.60. At SDG&E's peak rate (80¢/kWh), that same charge costs $48. The car is identical — the difference is entirely when you plug in.
Q: Is a home battery necessary to optimize EV charging in California?
A: Not necessary for everyone. Off-peak scheduling alone delivers the majority of available savings for non-solar homes. A battery adds significant value for solar owners who can't charge during the day, and for SDG&E customers where the peak-to-off-peak arbitrage value is highest. For most PG&E and SCE customers without solar, optimized scheduling captures most of the benefit without battery hardware.
Conclusion
The $100/month difference between my friend and his neighbor isn't about the car, the charger, or some complicated solar setup. It's about one decision: when to plug in.
The cheapest hours are consistent across all three major California utilities — avoid 4–9 PM, use overnight or midday windows — and automating that schedule takes about five minutes using your EV's native app. That's the free version of this optimization, and it's responsible for most of the available savings.
For solar owners under NEM 3.0, the additional step is aligning charging with solar production hours. What used to be handled automatically by the NEM 2.0 credit system now requires intentional scheduling — or a battery that does it automatically.
The practical starting point for any California EV owner:
Log into your utility portal and confirm you're on an EV-specific TOU plan
Set a departure time or charge start timer in your EV's app — tonight
If you have solar, set the charge window to 10 AM–3 PM when the car is home during the day
That's it. The savings show up on the next bill.
If you're considering a full solar and battery system to take this further, Best Solar System Size for EV Owners in California 2026 walks through the combined sizing calculation with real numbers.
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About the Author
James Ree has eight years of experience in electrical, HVAC, and solar wholesale in Los Angeles, supplying equipment to residential and commercial installers. He now writes practical guides on solar, EV charging, battery storage, and home electrical systems for U.S. homeowners.
Disclaimer
Electricity rates and utility programs change frequently. Rate figures cited are based on 2025–2026 published tariff schedules for PG&E EV2-A, SCE TOU-D-PRIME, and SDG&E EV-TOU-5. Verify current rates directly with your utility before making decisions.
