By Claire WhitakerUpdated November 2026
SoCal Edison net metering is the older export-credit arrangement that many Southern California homeowners with rooftop solar still use, but newer customers are usually placed on the net billing tariff instead. For most homes that installed solar after the program changed, net billing is the default and the better fit when you have a reasonably sized system and use most of your power at home in the evening. Homeowners who are still grandfathered under the older rules and have strong daytime exports often do better staying put, so the right answer depends on your contract date and usage pattern.
The two options differ mainly in how exported electricity is valued and how it is credited on your bill. Below is a side-by-side comparison, followed by a closer look at each criterion. Before you decide anything, check which tariff your account is on, because you generally cannot pick freely after your system is interconnected.
Side-by-Side Comparison
| Criterion | Net Metering (NEM) | Net Billing (NBT) |
|---|---|---|
| Who usually qualifies | Systems interconnected under the earlier program rules | Most new rooftop solar interconnections |
| How exports are valued | Exported kWh offset imported kWh at a one-to-one ratio over the billing period | Exports are credited at an hourly avoided-cost style rate that varies by time of day |
| Value of midday exports | Full retail-style offset | Usually lower, especially in the afternoon |
| Value of evening usage covered by battery or export credit | Equal to daytime exports | Stored and shifted energy can be worth more if paired with a battery |
| Battery pairing | Useful but less financially necessary | Strongly favors a battery to shift solar output into peak hours |
| Bill predictability | Easier to estimate from monthly totals | Requires hourly thinking to forecast well |
| Best for | Grandfathered systems with heavy daytime exports | New systems sized to match home use, often with storage |
Which Option Wins on Bill Credits?
Winner: Net metering, if you are eligible. Under the older program, every kilowatt-hour you push to the grid during the billing cycle offsets a kilowatt-hour you pull later. That one-to-one structure is simple and generous, which is why homeowners who locked in early tend to keep it. The catch is that the credit is reconciled over the billing period, so a month with strong sun and weak household demand can leave you with a surplus that rolls forward rather than paying you cash.
Net billing values exports at rates that move with the time of day. Midday exports, when the grid is flooded with solar, are typically worth less than what you pay for electricity at dusk. This means a system that looks generous on paper may credit less than you expect, unless you shift consumption or stored energy into the evening window. Owners often report that their first net billing statements look worse than their old net metering bills for exactly this reason.
If you want to understand why a bill still looks high even with solar, Why Is My Net Metering Electricity Bill Still High? 6 Causes and Fixes walks through the common reasons, many of which apply to net billing customers too.
Which Option Wins on Export Value?
Winner: Net metering for raw export value; net billing only wins with storage. A standard rooftop system without a battery exports most of its power around noon. Under net metering that power is worth close to what you would otherwise pay. Under net billing the same kilowatt-hours are discounted, so the financial case for an unbatteried system is weaker.
The picture changes if you add a battery. Stored midday energy used between about 5 p.m. and 9 p.m. is valued at the evening rate instead of the midday export rate, which can close much of the gap. A helpful way to think about it: under net billing, the battery is not an optional extra but the component that converts surplus into full value.
For a broader view of how the credit system works in general, see What Is the Benefit of Net Metering for Home Solar Owners? and Solar System Net Metering: How It Works and What Homeowners Should Know.
Which Option Wins on Eligibility and Timing?
Winner: Net metering, but only if you already qualify. Eligibility is set by the date your system was approved and interconnected, not the date you applied for financing. If your interconnection predates the tariff change, you may remain on net metering for the life of the system. Newer installations generally fall under net billing by default.
Because the rules are tied to specific program milestones and utility filings, confirm your status with Southern California Edison directly, and ask a licensed installer or a qualified energy advisor to review your interconnection paperwork. Do not rely on secondhand summaries for a decision that affects your bill for years.
Application steps and document requirements are covered in more detail in Solar Net Metering Requirements: What You Need to Qualify (Step-by-Step).
Which Option Wins on Bill Predictability?
Winner: Net metering. Monthly totals are easier to track under the older program because you can compare kilowatt-hours imported and exported over the cycle. Net billing requires you to think in hours, since the credit depends on when energy moves. Homeowners who like a simple monthly check will find the older structure easier to live with.
If you are reading an itemized statement and want to know what each line means, Solar Net Metering Bill Example PDF: How to Read Yours Step by Step shows the layout and the figures to look for, which applies across utilities.
Which Option Wins on Battery Compatibility?
Winner: Net billing, when paired with storage. Batteries make the most sense under net billing because they let you move solar output from low-value midday exports into high-value evening hours. The system can be sized so that most of your daytime production either powers the house or charges the battery, with only the excess going to the grid.
Under net metering a battery is still useful for backup and for covering evening load, but it is less essential to the financial case. Inverter choice matters here: some hybrid units support both battery charging and grid-tied export in one device. For a look at options, see Top 7 Hybrid Inverters with Net Metering Options for Homeowners.
Which Should You Choose?
- Choose net metering if your system was approved under the earlier program rules and your daytime exports are large relative to your evening use.
- Choose net billing if you are a new customer, your system is sized to your household load, and you plan to add a battery to shift exports into the evening.
- Stay on net metering if you are grandfathered and a battery is not in your budget, since your export value is likely better than a new net billing arrangement.
- Prioritize net billing with storage if you expect high summer consumption in the late afternoon and early evening, when stored energy earns the most.
- Consider a smaller export-focused system if you are on net billing and your roof could support more panels; oversizing usually yields diminishing returns on midday exports.
Product options for each path are listed below. Verify model compatibility with your installer before buying, since inverter and battery pairings must match the utility interconnection.
Net metering option (existing or grandfathered systems): View on Amazon
Net billing option (new systems with storage): View on Amazon
FAQ
Am I automatically on net billing if I install solar today?
In most cases, yes. New rooftop systems interconnecting after the program change are generally placed on net billing. Confirm the tariff on your interconnection agreement, because individual circumstances and utility filings can vary.
Can I switch from net billing back to net metering?
Generally no. Tariff eligibility is tied to your interconnection date and program rules, so switching is not a simple customer option. Ask Southern California Edison whether your account has any exceptions.
Does a battery make sense under net metering?
It can, for backup power and for covering evening usage during outages or peak rates. The financial case is usually weaker than under net billing, because your exports already earn a fuller credit.
Why did my bill go up after switching to net billing?
Owners often report this when midday exports are credited at lower hourly rates and evening usage is still drawn from the grid. Reviewing your usage timing and considering storage often helps. For a diagnostic checklist, see Why Is My Net Metering Electricity Bill Still High? 6 Causes and Fixes.
Should I get a professional review before deciding?
Yes. Because the choice affects long-term savings and interconnection terms, consult a licensed solar installer and, if the numbers are significant, an independent energy advisor before making changes.
Conclusion
For SoCal Edison customers, the answer comes down to timing and system design. If you are grandfathered into net metering, the one-to-one export credit is hard to beat, so keep it. If you are a new customer, net billing is the standard arrangement, and it rewards a system built around storage and evening consumption. Check your tariff, run your usage through a realistic hourly model, and get a qualified review before you commit to equipment.
About Claire Whitaker
Claire Whitaker is part of our editorial team and reviews and edits our home solar guides, checking product details against manufacturer specifications and owner feedback.
