Solar Installation DFW: Why Your Electric Bill Isn’t Zero After Solar

By SolarTime USA | Richardson, Texas

Solar Installation DFW: Why Your Bill May Still Exist

Many homeowners researching solar installation DFW expect their electric bill to drop to zero after installing solar panels. Most Homeoners after they go solar then ask:

“Why is my electric bill not zero?”

You watched the panels go up. You signed the interconnection agreement. You received Permission to Operate from Oncor. Then your first bill arrives — and it’s not what you expected.

Maybe it’s $40. Maybe it’s $90.

Before assuming something is wrong, it’s important to understand that a non-zero electric bill after going solar is completely normal for most homeowners in North Texas.

In fact, there are several predictable reasons why it happens. Once you understand how electricity billing works in Texas, the numbers start to make much more sense.

Let’s walk through the most common reasons.

Oncor Delivery Charges Still Apply

For homeowners researching solar installation in DFW, this is often the biggest surprise.

Electric bills in Texas generally have two main components:

• Energy charge — what you pay your retail electric provider for electricity• Delivery charge — what you pay the utility company (Oncor) to maintain the grid

Solar panels can significantly reduce — or sometimes eliminate — the energy charge portion of your bill.

However, delivery charges from Oncor do not go away.

As long as your home remains connected to the electric grid, you will continue paying delivery charges that support:

• transmission lines• poles and transformers• grid maintenance• infrastructure upgrades

For most residential customers in the Dallas–Fort Worth area, these charges typically range somewhere around $30–$60 per month, depending on electricity usage.

This is not a hidden fee and it applies to every grid-connected home, whether you have solar panels or not.

Solar’s goal is usually to dramatically reduce your electric bill — not necessarily eliminate it completely.

Reducing a $200 summer bill down to $40 or $50 is actually a strong result for many systems.

Solar Systems Are Sized for Annual Usage

When we design a solar system at SolarTime USA, we typically size it based on your historical electricity usage over the past 12 months.

This approach ensures your system offsets a large portion of your annual electricity consumption while staying within:

• available roof space• system design constraints• Oncor interconnection rules

However, your system is designed around your average yearly usage, not your highest usage month.

In North Texas, electricity demand spikes during July and August, when air conditioning runs nearly nonstop and temperatures regularly exceed 100°F.

During these months, your home may use more electricity than your solar panels produce.

That difference appears on your bill as grid consumption.

During milder months like spring and fall, your panels may generate more energy than your home uses, which can produce credits depending on your electricity plan.

Over the course of a full year, those highs and lows generally balance out.

That’s why it’s best to evaluate solar performance by comparing annual electricity spending before and after solar, not just a single summer bill.

Solar Panels Don’t Produce Power at Night

Solar panels only generate electricity when sunlight hits them.

From sunset to sunrise, a solar-only system produces no power.

That means nighttime electricity usage — such as:

• lighting• TVs• phone charging• appliances• air conditioning after dark

— still comes from the electric grid.

Cloudy days can also reduce solar production.

Panels still generate power under cloud cover, but typically at 10–25% of their maximum output, depending on cloud thickness.

North Texas is fortunate to receive plenty of sunshine overall, but periods of cloudy weather can temporarily increase grid usage.

Batteries Reduce Nighttime Grid Dependence

This is one reason many homeowners are choosing solar plus battery systems.

A battery charges during peak solar production hours — usually between late morning and mid-afternoon.

In the evening, the stored solar energy can power the home instead of pulling electricity from the grid.

Homes with battery storage systems often see significantly lower grid consumption at night compared to solar-only systems.

While batteries may not eliminate grid use entirely, they can further reduce electricity costs and provide backup power during outages.

Your Energy Usage May Have Increased

Another common reason for a higher-than-expected bill is simply increased electricity usage.

This happens more often than people realize.

After installing solar, homeowners sometimes feel more comfortable using electricity because their system is producing energy.

Examples we’ve seen include:

• installing a pool or hot tub• adding a second refrigerator in the garage• charging an electric vehicle at home• working from home with additional electronics• lowering the thermostat during summer

None of these are bad things — they’re often exactly why homeowners choose solar.

But they can change your overall electricity consumption compared to the usage used to design the system.

If you want to examine your home’s electricity usage in detail, you can view 15-minute interval data through SmartMeterTexas.com, which shows exactly when electricity is being consumed.

Your Electricity Plan Matters

Texas has a deregulated electricity market, which means homeowners choose their own retail electricity provider.

This choice can have a significant impact on solar economics.

Two important numbers affect solar customers:

Buy rateWhat you pay for electricity from the grid.

Sell rate (buyback rate)What your provider credits you for excess solar electricity sent to the grid.

Some plans offer 1:1 buyback, where exported solar energy receives a similar credit rate to the electricity you purchase.

Other plans credit exported energy at a much lower wholesale rate.

If your current plan has poor buyback terms, switching to a solar-friendly electricity plan through powertochoose.org can improve your monthly bill without changing your solar system.

When a Higher Bill Might Indicate a Problem

Most non-zero electric bills are normal.

However, there are situations where a higher bill may indicate a system issue.

Modern solar systems typically include monitoring apps through manufacturers such as:

• Enphase• Tesla• SMA

These apps allow homeowners to track daily and monthly production.

If your system appears to be producing much less energy than expected during sunny weather, it may be worth contacting your installer.

Possible causes could include:

• a tripped breaker• a failed microinverter• shading from new tree growth• equipment faults

At SolarTime USA, we monitor and support the systems we install. If something looks unusual, our team can help investigate and resolve the issue.

The Bottom Line

Seeing a small electric bill after going solar is completely normal for most North Texas homeowners.

Between Oncor delivery charges, seasonal electricity usage, nighttime consumption, and electricity plan structure, several factors influence the final bill.

The true measure of solar success is not whether your bill reaches zero — it’s how much you’ve reduced your total annual electricity costs compared to before installing solar.

For many homeowners across the Dallas–Fort Worth metroplex, those savings are substantial and grow over time as electricity prices change.

If you have questions about your system’s performance or are considering solar installation in DFW, the team at SolarTime USA is always happy to help.

Learn more or request a consultation at:

https://solartimeusa.com