Many California homeowners are shocked when they receive a large true-up bill. After installing solar, most people expect their electric bills to disappear completely, and that is not always the case. Solar can significantly reduce electricity costs, but it does not eliminate every utility charge. Your energy habits, utility rates, and even your system size all affect what you pay over time.
For many PG&E customers in Northern California, rising utility rates are also changing how solar savings work. The result? Higher annual charges than expected. This blog explains what NEM charges are, why your true-up bill may be high, and what homeowners can do to lower it.
What Are NEM Charges?
NEM stands for Net Energy Metering. It is the billing system California utilities use to track the energy your solar panels produce versus the electricity your home still uses from the grid. During the day, your system may produce more power than your home needs. That extra energy gets sent back to the utility in exchange for credits.
At night, your home usually pulls electricity back from the grid. Your utility company calculates the difference during the true-up process.
NEM-related charges that can affect your annual total may include:
- Non-bypassable charges
- Grid connection fees
- Electricity used at night
- Seasonal production differences
- Peak-hour electricity costs
Why Your True-Up Bill May Be Higher Than Expected
Several factors can increase what you owe at the end of the year. And in California, utility rate increases have made that even more noticeable. A solar system installed years ago may not offset the same amount of electricity today, especially if your household energy usage has changed.
Here are some of the most common reasons homeowners see higher true-up bills:
| Factor | Why It Increases Your True-Up Bill |
| Higher PG&E rates | Electricity costs continue to rise |
| Increased home energy usage | More usage reduces solar offset |
| Peak hour consumption | Evening electricity costs more |
| Undersized solar system | The system may not offset full usage |
| Seasonal changes | Winter production is lower |
| Electric vehicle charging | EV charging increases demand |
| Pool pumps/HVAC | Large energy loads raise usage |
| No battery storage | More dependence on grid power |
How PG&E Rate Changes Affect Solar Customers
California utility rates continue climbing. Even homeowners with solar are feeling the impact. PG&E customers still pay certain delivery and grid-related fees. That means solar does not completely eliminate monthly bills.
For many Northern California homeowners, the biggest surprise is peak-hour pricing. Electricity costs more during evening hours when solar panels are no longer producing energy. That is where true-up charges can grow fast.
Many homeowners are also using more electricity now than when their solar systems were originally installed. EV charging, upgraded HVAC systems, and larger appliances all increase demand. Solar still helps. But rising rates change the math.
The Biggest Mistake Homeowners Make With Solar Usage
One of the biggest misconceptions about solar is that it means unlimited electricity. Well, unfortunately, it does not, and energy habits still matter a lot. Many homeowners gradually increase their energy use after installing solar, unaware of the long-term impact on their utility costs.
Common examples include:
- Running HVAC systems heavily at night
- Charging EVs during peak utility hours
- Adding appliances after solar installation
- Not monitoring system production
Why Battery Storage Can Lower Your True-Up Bill
Battery storage helps homeowners use more of their own solar energy instead of relying on the grid. Without a battery, excess daytime solar energy is often sent back to the utility, forcing homeowners to buy electricity back later at higher evening rates.
A battery changes that. It stores extra solar energy for later use. That can lower expensive peak-hour utility costs and reduce grid dependence.
Here is the difference:
| Without Battery | With Battery Storage |
| More grid usage at night | Stored solar power at night |
| Higher peak hours cost | Lower peak hour dependence |
| Greater reliance on utility provider | More energy dependence |
| No outage protection | Backup power during outages |
For many California homeowners, battery storage has become one of the best ways to lower what they owe at the end of the year.
Additional Ways to Lower Your True-Up Bill
The good news is that a high annual charge can often be reduced. Sometimes small adjustments make a big difference.
Here are some ways homeowners can lower their utility costs:
- Monitor your solar production regularly
- Reduce peak-hour electricity usage
- Charge EVs during daytime solar production
- Add battery storage
- Review your current system sizing
- Upgrade older solar systems if needed
- Track changes in PG&E utility rates
When It Might Be Time to Upgrade Your Solar System
Your solar system should match your current energy needs. But over time, those needs often change.
You may need an upgrade if:
- Your annual charges keep increasing
- You added an electric vehicle or a pool
- Your household has increased its electricity usage
- Your system is over 10 years old
- Your solar production has declined
An upgraded system may improve efficiency and reduce future utility costs. Adding battery storage can help, too.
Contact DC Solar Electric for a Solar System Assessment
Higher annual charges are becoming more common across California. Rising PG&E rates, increased home energy usage, and system limitations all contribute to the problem.
The good news? There are solutions. Battery storage, smarter energy usage, and proper system sizing can all help reduce your dependence on the grid.
The next best step is to have an experienced professional review your current solar system and utility usage. A solar assessment can help identify where your costs are increasing and what improvements may help lower future bills.
FAQs
Q: Why is my true-up bill so high with solar?
A: Your annual charges may be high because of increased electricity usage, rising PG&E rates, peak-hour energy use, or a solar system that no longer offsets your full energy demand. Even with solar, most homes still rely on grid electricity at certain times.
Q: Do solar customers still pay utility bills in California?
A: Yes. Solar lowers electricity costs, but most California homeowners still receive utility bills. Charges may include grid connection fees, non-bypassable charges, and electricity used beyond what the solar system produces.
Q: What are non-bypassable charges?
A: Non-bypassable charges are utility fees California solar customers still pay, even when generating solar energy. These charges help fund grid maintenance and statewide public energy programs.
Q: Can battery storage lower my annual charges?
A: Yes. Battery storage allows homeowners to store excess solar energy during the day and use it later during expensive evening hours. This reduces dependence on PG&E and can help lower annual charges significantly. Many homeowners see a noticeable difference after adding storage.
Q: Why do my annual charges keep increasing every year?
A: Costs often rise because California utility rates continue climbing. Higher household energy usage, EV charging, HVAC systems, and pool equipment can also increase your annual charges over time.
Q: Does charging an EV increase my utility costs?
A: Yes. Charging an electric vehicle can significantly raise household electricity usage, especially if charging happens overnight or during peak utility pricing hours.
Q: How do I know if my solar system is undersized?
A: Your solar system may be undersized if your electricity usage has increased, your annual charges continue rising, or your system no longer offsets enough of your annual power usage.
Q: Should I upgrade my solar system in California?
A: If your home uses more electricity now than when your system was installed, an upgrade may improve performance and reduce utility costs. Many homeowners also add battery storage to increase savings.
Q: How does NEM work in California?
A: Net Energy Metering (NEM) allows homeowners to receive credits for excess solar energy sent back to the grid. Those credits help offset the electricity your home later pulls from the utility and are calculated at your annual true-up.
Q: What is the best way to lower my annual charges?
A: The best ways to lower your annual charges include monitoring energy usage, avoiding peak-hour electricity use, charging EVs during daytime solar production, adding battery storage, and making sure your solar system is properly sized.