Time-of-Use Electricity Rates and Solar: How to Maximize Your Savings in 2026

Last updated: 2026-06-19

When most homeowners go solar, they assume the savings show up automatically on the bill. Usually they do—at first. But there's one variable that quietly erodes those savings more than almost anything else: time-of-use (TOU) electricity rates.

Here's the short version: your solar panels produce the most power from 10 AM to 3 PM, when your utility pays you very little for it. The grid charges peak rates from 4–9 PM, right when the sun is going down and your household demand spikes. That mismatch—sometimes $0.05 vs. $0.48 per kWh—is where solar returns quietly bleed out.

The good news: once you understand how TOU rates work, there are concrete strategies to close that gap. Some cost nothing. Others involve a battery that pays for itself over time. This guide covers both.

What Time-of-Use Electricity Rates Actually Are

Traditional electricity pricing is flat: you pay the same rate per kilowatt-hour (kWh) regardless of when you use it. TOU pricing changes that by charging different rates based on time of day and day of week:

Off-peak hours: Nights and weekends, when grid demand is low. Cheapest rates.
Mid-peak hours: Shoulder periods, often mid-morning or early afternoon. Moderate rates.
On-peak (super-peak) hours: Typically 4–9 PM on weekdays. This is when rates spike hardest.

As of 2026, over 30 states have utilities offering—or mandating—TOU rates for new solar customers. California's NEM 3.0 made TOU essentially unavoidable for solar adopters. Texas, Arizona, and New York are on similar trajectories.

Typical on-peak rates run $0.35–$0.55/kWh. Off-peak rates are often $0.08–$0.14/kWh. That's a 3–5x spread based on nothing more than the clock.

The Problem: When Solar Produces vs. When Rates Are Highest

Solar panels peak around noon—squarely in the off-peak or mid-peak window for most utilities. By the time rates spike at 4 PM, your panels are producing at 30–40% of capacity and declining fast.

The result plays out like this. Say you have a 7 kW system that generates 35 kWh on a summer weekday. You're at work, so your household uses only 8 kWh during the day. You export 27 kWh to the grid between 9 AM and 4 PM at an off-peak export rate of $0.09/kWh. That earns $2.43 in credits.

That evening you run the AC, cook dinner, and watch TV—drawing 12 kWh from the grid during the 4–9 PM peak window at $0.44/kWh. That costs $5.28.

Net result: you owe $2.85 on a day your solar system produced 35 kWh. Without TOU awareness, homeowners assume the system is underperforming. Often it's running exactly as designed—the rate structure is just working against it.

Strategy 1: Shift Flexible Loads Into Solar Production Hours

The cheapest fix is the most effective. Run high-draw appliances while the sun is shining.

Dishwashers, washing machines, dryers, pool pumps, and EV chargers are all "flexible loads." They don't care whether they run at noon or 7 PM. Shift them to 10 AM–2 PM and you're consuming your own solar instead of exporting it cheaply and buying expensive peak power later.

Practical moves:

Enable your dishwasher's delay-start and set it for 11 AM
Schedule EV charging for 10 AM–2 PM (most EVs and Level 2 chargers support this natively)
Run the dryer during peak solar production, not after dinner
Pre-cool the house to 68°F at 2 PM so the AC cycles down naturally during peak hours

Shifting even 20–40% of household load into solar production hours reduces your peak grid draw meaningfully. For a typical household, that's $30–$70/month you stop paying at the expensive rate.

Strategy 2: Know Your Export Rate Before You Sign Anything

If you haven't gone solar yet, this is the number that matters most—more than the system size, more than the panel brand.

Utilities compensate solar exports in different ways:

Retail rate parity: You're credited at the same rate you'd pay to buy that power. Increasingly rare.
Avoided cost: ~$0.04–$0.08/kWh flat, regardless of when you export. Bad for solar ROI.
Time-differentiated export: Credits vary by time of day. Better if you can store or time-shift production.

Many installers quote savings using the full retail rate rather than the actual blended export rate you'll receive under your utility's current TOU tariff. The difference can shift your payback period by 3–5 years.

Before signing with any installer, ask for a production model that uses your utility's current export rate schedule—not a simplified average.

EnergySage makes this comparison straightforward. Installers on their platform compete for your business and are required to quote under verified utility rate data. You submit your information once and typically receive 3–7 competing quotes within a few days—each showing how your specific TOU structure affects actual savings. It takes about 10 minutes and costs nothing.

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Strategy 3: Add a Home Battery to Time-Shift Your Solar Production

For homeowners on steep TOU tariffs—especially in California, Arizona, Hawaii, or anywhere with $0.40+/kWh peak rates—a home battery changes the math entirely.

The logic:

Solar charges the battery during cheap midday hours
When peak rates kick in at 4 PM, you drain the battery instead of drawing from the grid
You're buying cheap solar at noon and spending it at $0.44/kWh equivalent in the evening

A 10 kWh battery covers most households through the 4–9 PM peak window. A 20 kWh system handles a high-consumption home or extends overnight coverage.

The EcoFlow DELTA Pro Ultra is purpose-built for this. It starts at 6 kWh and expands to 21.6 kWh with add-on batteries. It integrates with a whole-home transfer switch, supports bidirectional EV charging, and includes smart scheduling that automatically times charge and discharge cycles to your utility's TOU calendar.

At a $0.40/kWh peak rate, storing and dispatching 10 kWh daily saves roughly $4/day, or $1,460/year. At that rate, a well-priced battery system earns back its cost in 8–12 years while also providing whole-home backup during outages—an insurance value most homeowners find worthwhile on its own.

Strategy 4: Smaller Budget — Portable Power Plus Smart Scheduling

A whole-home battery installation isn't the right call for every household. If you have a smaller solar system, are renting, or just want meaningful peak-rate defense without the capital outlay, a portable power station gives you real TOU optimization at a fraction of the cost.

The Jackery Explorer 2000 Pro (2 kWh capacity) charges from your solar panels during the day and can run a refrigerator, fans, phone charging, and router through the 4–9 PM peak window without drawing grid power. It won't replace a whole-home battery—but it can offset 2–4 kWh of peak grid consumption per day.

At $0.40/kWh peak rates, offsetting 3 kWh daily saves roughly $438/year. At that rate, a Jackery-class unit running at full utilization can pay for itself in under 3 years in a high-TOU market—and it goes with you in a power outage, road trip, or camping trip.

The Four Numbers You Need to Know

When evaluating your TOU situation, these are the figures that actually drive the math:

| Metric | Where to Find It | Why It Matters |

|---|---|---|

| Peak rate ($/kWh) | Utility bill or rate schedule page | Sets the upper bound on your battery savings |

| Off-peak export rate ($/kWh) | Net metering agreement / tariff | What your midday solar exports are actually worth |

| Daily peak consumption (kWh) | Hourly usage data from utility portal | Sizes your battery or load-shifting opportunity |

| Peak window hours | Utility tariff schedule | When to dispatch storage and shift flexible loads |

Rule of thumb:

Peak rate under $0.20/kWh → load-shifting alone probably covers you
Peak rate $0.20–$0.35/kWh → load-shifting plus a portable power station
Peak rate above $0.35/kWh and daily peak use above 8 kWh → a home battery is worth detailed modeling

What to Do If Your Utility Just Switched You to TOU

Many utilities are quietly migrating legacy solar customers to TOU tariffs as older net metering agreements expire. If your bill recently got worse and you can't figure out why:

Find your tariff code on the bill — look for designations like "TOU-NET-D" or "E-ELEC-TOU"
Pull three months of hourly usage data from your utility's online portal — most now provide this
Map your biggest loads to the clock — dishwasher, dryer, EV, HVAC
Quantify the peak load you can shift — even moving 30% of peak loads saves real money
Model a battery only if peak rate exceeds $0.35/kWh — below that, the payback period is typically too long to justify the capital

Don't assume your solar system is broken. TOU optimization is a learnable skill, and most homeowners who engage with it reduce their net bills by 25–40% within the first year of adjusting habits.

Getting Quotes That Actually Reflect Your Rate Structure

The most common mistake new solar shoppers make is accepting quotes that use a simple average rate assumption. Under NEM 3.0 and TOU structures, your actual blended rate—combining what you pay for peak grid power and what you receive for off-peak exports—can be significantly lower than the retail rate an installer might quote against.

When comparing installers, ask explicitly:

> "Can you model my savings using my utility's current TOU export rate schedule, broken down by time of day?"

A serious installer will produce an hourly production/consumption model. If they can't show you time-differentiated export crediting in the proposal, that's a red flag worth noting.

EnergySage's comparison platform requires installers to use verified utility rate data, and you can compare how different proposals model your TOU-specific savings side by side—before you commit to anything.

Start With Zero New Equipment

If you're already on solar and haven't thought about TOU optimization:

Pull three months of hourly usage data from your utility portal
Identify the two or three biggest discretionary loads in your household
Move them to 10 AM–2 PM for two billing cycles
Compare the bills

That's it. No installer visit, no new hardware, no upfront cost. If the result moves your bill by $30+/month, you've just validated that TOU optimization works for your home. If the math shows you're losing $100+/month to peak exposure, that's the case for a battery—and you now have the numbers to anchor the payback calculation honestly.

Rate structures are changing faster than most homeowners realize. Subscribe to SolarSimple's monthly rate tracker — we monitor utility filings across all 50 states and alert you when something changes in your market.

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