A smarter way to go solar when exporting power isn’t the main value
If you’re a PG&E customer in Dublin (or nearby Tri-Valley cities), the most effective solar strategy has changed. Under California’s Net Billing Tariff (often called NEM 3.0), the grid no longer “rewards” daytime exports the way older programs did. That’s why many homeowners are now choosing non-export or export-limited solar designs paired with home battery backup—so the home uses more of its own solar energy and relies less on the grid during expensive hours.
What “non-export solar” means (and what it doesn’t)
Non-export solar is a system configuration designed to prevent (or severely limit) solar power from flowing back onto the utility grid. Instead, your solar production is prioritized to: (1) run your home loads in real time, and (2) charge a battery for later use.
Non-export does NOT mean “no savings”
You still save by avoiding purchasing electricity from the grid—especially during peak time-of-use periods. Under PG&E time-of-use structures, peak pricing is commonly concentrated in late afternoon/evening hours (often 5–8 p.m., depending on the plan).
Why NEM 3.0 (Net Billing Tariff) pushes homeowners toward batteries
Under the Net Billing Tariff, exported energy is credited differently from the energy you buy from the grid. The practical takeaway for many Bay Area homeowners is simple: self-consumption becomes the main value.
A helpful mental model
This design approach also fits how many households actually live: people tend to use more electricity in the evening—cooking, HVAC, laundry, devices—right when solar production is falling.
Quick “Did you know?” facts (PG&E + modern solar design)
Step-by-step: How a non-export solar + battery system is typically designed
1) Confirm your electrical “starting point”
Your main panel rating, available breaker space, and existing load determine how cleanly solar, batteries, and EV charging can be added. Many Dublin-area homes benefit from a main panel upgrade or a sub-panel upgrade when adding multiple high-demand technologies.
2) Size solar for self-consumption (not maximum export)
With a non-export mindset, the goal isn’t “biggest array possible.” It’s a system that reliably powers daytime loads and charges the battery without regularly dumping excess to the grid.
3) Add a battery for evening peaks + resilience
Batteries can supply your home when solar drops off, which helps reduce grid purchases during higher-priced evening periods. They also provide backup power during outages when configured with an appropriate backup load strategy.
4) Control the “big loads” (EV chargers, HVAC, electric appliances)
If you have (or plan to buy) an EV, scheduling charging for midday solar hours or off-peak utility hours can make a noticeable difference. A dedicated Level 2 circuit also supports safe, reliable charging.
5) Consider a smart panel for real-time load control
A smart panel upgrade can help you prioritize essential circuits, manage battery runtime, and understand exactly where energy is going—especially helpful for tech-forward households that want visibility and control.
Non-export vs. traditional export: a practical comparison
| Feature | Non-Export / Export-Limited Solar + Battery | Solar-Only (More Export Exposure) |
|---|---|---|
| Primary value | Use more of your own solar; reduce peak-hour grid use | Lower daytime purchases; exports may earn lower credits under NBT |
| Evening performance | The battery can supply the home during peak hours | More likely to buy from the grid during peak hours |
| Resilience during outages | Backup power is possible with the right configuration | Typically, no backup without storage |
| Panel requirements | Often benefits from panel/sub-panel planning + load control | Can still require upgrades depending on home capacity |
The “best” option depends on your usage pattern, roof layout, and electrification plans (EVs, heat pump HVAC, induction cooking). The key under the Net Billing Tariff is designing around when you use power—not just how much.
Local angle: Dublin and nearby Bay Area cities
In the East Bay and South Bay—where many homeowners are adopting EVs and electrifying homes—solar projects often succeed or fail based on electrical readiness. If you’re in Dublin, Pleasanton, San Ramon, Castro Valley, Fremont, or San Jose, it’s common to see a need for: main panel upgrades, sub-panel expansions, and thoughtful planning for EV charging and battery backup.
Want to see what real installs look like? Browse recent work in the project gallery. View our solar & electrical installation gallery
Get a system design that matches the Net Billing Tariff reality
Sunlight Electri-Cal Solutions designs and installs end-to-end solar, battery backup, EV charging, SPAN smart panels, and service panel upgrades—so your equipment, wiring, and controls all work together.
FAQ: Non-export solar, batteries, and panel upgrades
Is non-export solar allowed for PG&E customers?
Yes—systems can be designed to limit exports using approved control methods and proper interconnection documentation. The right approach depends on your equipment and how the system is configured.
Do I “need” a battery under NEM 3.0 / Net Billing Tariff?
Not always, but batteries are often where the best savings and performance come from—because they help you use solar energy later, when electricity is more expensive and solar production is low.
Will I need a main panel upgrade to add solar + battery + EV charging?
Possibly. Many homes can add one improvement without major changes, but combining solar, storage, and a Level 2 EV charger can push the panel’s capacity or breaker space. A site assessment confirms what’s required for code compliance and safe operation.
Can a SPAN smart panel improve battery backup performance?
For many households, yes. Circuit-level control can help you prioritize critical loads and manage energy use during peak pricing or outages—especially if you want app-based visibility into what’s running.
Where can I get more answers about solar and electrical upgrades?
Visit our FAQs for practical guidance on solar, batteries, and electrical work: Solar & Electrical FAQs
