Solar in California 2026: NEM 3.0, Rates, and Whether It's Still Worth It

California used to be the easiest state in America to make the solar decision. Highest electricity rates in the continental US. Full retail net metering. Abundant sunshine. State incentives stacked on top of federal ones. The payback period was often under five years, and going solar was as close to a financial no-brainer as residential energy decisions get.

Then NEM 3.0 arrived in April 2023 and changed the math dramatically. If you are considering solar in California in 2026, you need to understand exactly what changed, what it means for your wallet, and whether solar still makes sense. The short answer is yes — but the system design that makes it work is fundamentally different than it was two years ago.

What NEM 3.0 Changed

NEM stands for Net Energy Metering — the policy that determines how much you get paid when your solar panels send excess electricity back to the grid. Under the old policy (NEM 2.0), California utilities credited you at the full retail rate for every kilowatt-hour you exported. If you paid $0.35/kWh, your solar exports earned $0.35/kWh. Your meter effectively ran backward.

NEM 3.0 (officially called the Net Billing Tariff) fundamentally restructured this. Here is what changed:

1. Export rates dropped 75%

Under NEM 3.0, the value of exported solar electricity is based on the "avoided cost" — roughly what it costs the utility to generate or buy that power at the time you export it. During midday, when the grid is flooded with solar production, this value is very low. During evening peak hours, it is higher.

In practical terms, the average export rate under NEM 3.0 is approximately $0.05–$0.08/kWh instead of the $0.30–$0.45/kWh that NEM 2.0 customers received. That is a 75–80% reduction in the value of exported solar electricity.

2. Time-of-use rates became critical

NEM 3.0 aligns with time-of-use (TOU) rate schedules, where electricity costs vary by time of day:

• Off-peak (midday): Lowest rates, roughly $0.20–$0.25/kWh — this is when your panels produce the most
• Partial peak (morning/late afternoon): Moderate rates, roughly $0.35–$0.45/kWh
• Peak (4 PM–9 PM): Highest rates, roughly $0.45–$0.65/kWh — this is when you need the most electricity but your panels are producing little or nothing

The old math was simple: produce solar during the day, export the excess, get full credit, use the credit at night. The new math penalizes that approach because daytime exports are worth far less than nighttime consumption costs.

3. The battery became essential

This is the biggest practical change. Under NEM 2.0, a battery was a luxury — nice for backup power but unnecessary for economics. Under NEM 3.0, a battery is the centerpiece of the system design.

The strategy under NEM 3.0: produce solar during the day, store excess in a battery instead of exporting it, then use the stored energy during peak hours (4 PM–9 PM) when rates are highest. Instead of earning $0.06/kWh by exporting, you avoid paying $0.50+/kWh by using stored solar. The difference is enormous.

The 2026 California Solar Math

Let us run realistic numbers for a California homeowner going solar today under NEM 3.0:

Without Battery (Solar Only)

• Location: Southern California (SCE territory)
• System size: 7 kW
• Gross cost: $21,000 ($3.00/watt — CA pricing)
• Federal ITC: $0 (expired for purchased systems January 1, 2026)
• Net cost: $21,000
• Annual production: ~11,200 kWh
• Self-consumption (direct use during production): ~40% = 4,480 kWh
• Exported to grid: ~60% = 6,720 kWh

Annual savings:

• Self-consumed at avoided retail rate ($0.35 avg): $1,568
• Exported at NEM 3.0 rate ($0.06 avg): $403
• Total year 1 savings: ~$1,970
• Payback period: ~10.7 years (without the federal ITC; was ~7.5 years when ITC was available)

Not bad, but a huge chunk of your production earns only pennies when exported. You are leaving money on the table.

With Battery (Solar + Storage)

• Same solar system: 7 kW
• Battery: 13.5 kWh (Tesla Powerwall or equivalent)
• Battery cost: $12,000
• Total gross cost: $33,000
• Federal ITC: $0 (expired for purchased systems January 1, 2026)
• Net cost: $33,000
• Self-consumption (with battery): ~85% = 9,520 kWh
• Exported: ~15% = 1,680 kWh

Annual savings:

• Self-consumed at weighted average avoided rate ($0.42 avg — higher because battery shifts use to peak hours): $3,998
• Exported at NEM 3.0 rate ($0.06 avg): $101
• Total year 1 savings: ~$4,100
• Payback period: ~8 years (without the federal ITC; was ~5.6 years when ITC was available)

The battery nearly doubles your annual savings despite adding significant cost, because it lets you use your own solar during the most expensive hours instead of buying from the utility at $0.50+/kWh.

Why California Solar Still Makes Sense

Despite NEM 3.0 making the economics more complicated, California remains one of the best states for solar for several reasons:

1. Electricity rates are the highest in the continental US (and rising)

The average California residential rate is approximately $0.35–$0.40/kWh — more than double the national average. PG&E customers in Northern California routinely pay $0.45–$0.55/kWh during peak hours. SCE and SDG&E are similar.

These rates are not going down. California's grid infrastructure needs massive upgrades to handle wildfire risk, electrification mandates, and demand growth. Rates have increased an average of 6–8% annually for the past several years, well above the national average of 3–4%. Every year you do not have solar, your electricity bill gets more expensive.

2. California's SGIP battery incentive

The federal 30% ITC expired for purchased systems January 1, 2026. However, California's Self-Generation Incentive Program (SGIP) provides rebates for battery storage — up to 25% of battery cost for most homeowners, and 85% for low-income households. For a $12,000 battery, SGIP can provide $3,000+ in rebates. This partially offsets the loss of the federal credit for California battery purchasers.

3. California sunshine is still California sunshine

Southern California averages 5.5–6.0 peak sun hours per day. Even the Bay Area averages 5.0–5.5 hours. Your panels produce a lot of electricity, which means more energy to store and use during expensive peak hours.

4. Property value increases

Solar homes in California sell for approximately 3–4% more than comparable non-solar homes. In a state where median home prices exceed $700,000, that is a $21,000–$28,000 premium. The Lawrence Berkeley National Laboratory has verified this premium repeatedly in peer-reviewed studies.

5. Wildfire power shutoffs

PG&E's Public Safety Power Shutoffs (PSPS) affect millions of Californians during fire season. A solar+battery system keeps your critical loads running during shutoffs. This is not just an economic benefit — it is a safety and quality-of-life issue that is hard to put a dollar value on.

The NEM 3.0 System Design Strategy

If you are going solar in California in 2026, the optimal approach is different than it was under NEM 2.0:

Size the system for self-consumption, not maximum export. Under NEM 2.0, bigger was always better because exports earned full retail value. Under NEM 3.0, oversizing your system just produces more low-value exports. Size your solar array to cover roughly 100–110% of your annual usage and pair it with enough battery storage to carry you through the peak evening hours.

Battery sizing matters. For most California homes, one 13.5 kWh battery handles the evening peak. Larger homes or those with electric vehicles may need two batteries (27 kWh). Your installer should model your specific load profile to right-size the storage.

Shift heavy loads to solar hours. Run your dishwasher, laundry, and pool pump during midday when your panels are producing. Charge your EV during the day if possible. Every kWh you use directly is worth $0.35–$0.55 in avoided costs, versus $0.06 if exported.

Consider an EV. If you are thinking about an electric vehicle, solar+battery+EV is the combination that maximizes your total savings. Charging an EV from your solar panels instead of the grid at peak rates saves $0.40–$0.55 per kWh — which adds up to $1,500–$2,000/year for an average EV driver.

Who Should Not Go Solar in California Right Now

Even in California, solar is not for everyone:

• Renters — unless your landlord is willing to install and share the savings
• Moving within 2–3 years — you will recoup through home value, but the transaction adds friction
• Heavy shading — redwoods and eucalyptus are real obstacles in NorCal
• Roof replacement needed soon — get the roof done first
• Very low electricity usage — if your bill is under $100/month, the payback period extends significantly

Key Takeaways

• NEM 3.0 reduced the value of exported solar by roughly 75%, but California solar is still worth it for most homeowners
• Battery storage is now essential, not optional — it nearly doubles your annual savings under NEM 3.0
• The optimal strategy is solar + battery, sized for self-consumption rather than maximum export
• California electricity rates are the highest in the continental US and rising 6–8% annually — every year you wait costs more
• The federal 30% ITC expired January 1, 2026 for purchased systems — California's SGIP battery rebate partially compensates
• A 7 kW solar system with battery storage typically pays back in 7–10 years in California (longer than the 5–7 years when the federal ITC was available), with 15+ years of pure savings after that

NEM 3.0 did not kill California solar. It killed the old California solar playbook. The new playbook — solar paired with storage, optimized for self-consumption — still delivers some of the strongest returns in the country. You just need to design the system correctly from the start.

Related articles:

• Is Solar Worth It in 2026? The Honest Answer
• Solar on Cloudy Days: Does It Still Work?
• What to Do When Your Solar Installer Goes Bankrupt

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