The average American household spends about $154 per month on electricity. After installing solar panels, that bill typically drops to $10 to $30 per month. That dramatic reduction is real, but it’s not the complete picture. Even with a well-designed solar system, you won’t eliminate your electricity bill entirely—you’ll still owe connection fees and grid charges that exist regardless of how much solar power you generate. What your actual bill looks like depends on your state’s net metering rules, how well your system is sized to your consumption, and seasonal variation. Here’s what stays on the bill, how net metering affects your costs, and how to estimate what you’ll actually pay.

What Stays on Your Electricity Bill After Solar

Even if your solar system generates 100% of your annual electricity needs, your utility bill won’t drop to zero. Here’s what remains:

Fixed Monthly Connection Fee

Every utility charges a basic customer charge just for being connected to the grid. This ranges from $10 to $25 per month depending on your utility and state. It covers the infrastructure—poles, wires, meter, transformers—that delivers power to your home. Solar doesn’t reduce this charge because you’re still using the grid for backup and at night.

Delivery and Distribution Charges

Separate from the price you pay for electricity itself, you pay a delivery or distribution charge for the use of the wires and infrastructure that carry power from the power plant to your home. Even if your solar covers all your daytime needs, you’ll still pay delivery charges for any power you draw from the grid at night or on cloudy days. In most states this is modest—1 to 4 cents per kWh—but it adds up.

Taxes and Regulatory Fees

Utilities collect state and local taxes and various regulatory fees. These are added as a percentage or flat amount and can’t be avoided by going solar. They typically add 5-10% to your bill.

How Net Metering Shapes Your Post-Solar Bill

Net metering is the reason solar works financially for most homeowners. In most US states, net metering allows you to send excess solar power back to the grid during the day and receive a credit at the retail electricity rate. That credit offsets power you draw from the grid at night or on cloudy days. In a typical sunny climate, a well-sized system generates more power in summer than you need, earning credits that reduce your winter bills when production is lower.

Simplified example: A 6 kW solar system in a sunny climate produces about 8,000 kWh per year. If your home uses 9,600 kWh per year, your system covers about 83% of your annual usage. You draw 1,600 kWh from the grid annually. At $0.16 per kWh, that’s $256 per year in energy charges. Add back $15/month connection fee ($180/year) and $100-150/year in taxes and fees, and you’re looking at a remaining annual bill of roughly $536-586, or about $45 per month on average. In summer, you might pay just the connection fee. In winter, your bill might hit $80-150.

State Net Metering Policies Vary Widely

Full Net Metering

States like New York, Massachusetts, and many others credit excess solar at the full retail rate. This is the best-case scenario—your remaining bill is closest to the $10-30 range after connection fees and fixed charges.

California’s NEM 3.0

California switched to NEM 3.0 in April 2023, which significantly reduced the export credit rate. Instead of the full retail rate (20+ cents/kWh), solar customers now receive about 7-10 cents/kWh for exported power. For homeowners installed after NEM 3.0, solar cuts bills by 50-60% instead of 80%+. Many California installers now recommend pairing solar with battery storage so households maximize self-consumption instead of exporting at the lower rate.

States Without Full Net Metering

Some states (certain Texas and Georgia utilities) don’t have statewide net metering, instead offering net billing at a lower wholesale rate. Your remaining bill in these states may be $60-80 per month even with solar.

How System Sizing Affects Your Bill

Undersized Systems

If your system covers only 30% of your consumption, your bill might only drop from $150 to $100 per month—not compelling. Most installers size systems to cover 80-100% of annual electricity consumption.

Oversized Systems

A system larger than your annual consumption sends excess power to the grid at low credit rates. Oversizing makes sense only if you’re planning future loads (EV, heat pump) or have battery storage.

How to Estimate Your Post-Solar Bill

Step 1: Find Your Baseline

Get your last 12 months of electricity bills. Sum the total kWh and total charges. Divide charges by kWh to find your blended rate. Example: 10,500 kWh/year, $1,680 annual bill—blended rate = 16 cents/kWh.

Step 2: Estimate Annual Production

Use location-based rules of thumb: sunny regions (Arizona, Southern CA, Florida) produce 1.25-1.35 kWh per rated watt per year. Moderate regions (most of the US) produce 1.0-1.2 kWh per watt per year. A 7 kW system in a moderate climate: 7 kW x 1.1 = 7,700 kWh/year.

Step 3: Calculate Your Remaining Grid Draw

If you use 10,500 kWh/year and your system produces 7,700 kWh/year, you still draw 2,800 kWh from the grid. At 16 cents: $450/year = $37/month average. Add fixed fees ($15-20/month) and you’re at $52-57/month average. Winter months will be higher; summer months will be lower.

Seasonal Variation

Solar production in December-February is 60-70% lower than in June-August. Even with a well-designed system, your winter bill is typically 2-3 times higher than your summer bill. This is normal and expected. A homeowner with a 7 kW system in a moderate climate might pay $15/month in June and $90/month in December. The annual average is $40-50/month, but the monthly swing is real.

EVs and Heat Pumps: Size Accordingly

If you own or plan to add an electric vehicle or electric heat pump, your electricity consumption jumps 5,000-8,000 kWh per year. A system sized for your original baseline won’t cover the new load. Size your solar 20-30% larger to account for future EV or heat pump consumption, or plan to add battery storage later to maximize self-consumption.

Frequently Asked Questions

Can I get my electric bill to zero with solar?

In the best months you can get close—just the connection fee ($10-25). But over a full year, fixed charges and grid draws in winter and at night mean the average is $10-30/month, not zero. True zero isn’t achievable on a grid-tied system without also going off-grid.

What happens to unused net metering credits?

In most states, monthly credits roll over to the next month. At year-end, unused credits either expire or are paid out at a lower rate (typically 1-3 cents/kWh). The exact policy varies by utility. In California under NEM 3.0, unused credits are paid out quarterly.

Why is my post-solar bill higher than I expected?

Common reasons: system is undersized, poor net metering policy in your state, higher actual consumption than estimated, new consumption added after installation (EV, heat pump), or a system performance issue. Pull your monitoring app data and compare actual production to what was promised. If production is below expectations, contact your installer.

Does solar help with time-of-use electricity rates?

It depends on your usage pattern. TOU rates charge more during peak evening hours (4-9 PM). Solar produces during midday, not evenings. If you use most power in the evenings, solar alone may not cut your TOU bills much. Pairing solar with batteries lets you shift daytime solar to evening use—which significantly reduces TOU bills.

Should I add battery storage to reduce my bill further?

Batteries make the most sense in California (NEM 3.0), states with high time-of-use rates, and homes that want backup power. In states with full net metering and flat rates, batteries don’t reduce your bill much because net metering already offsets grid draws with credits. Calculate your payback period before adding batteries.

How much does solar save on electricity bills per year?

The US average is roughly $1,000-1,500 per year for a well-sized system in a state with full net metering. Savings are higher in states with expensive electricity (Hawaii, California, Massachusetts) and lower in states with cheap electricity (Louisiana, Oklahoma, Washington). A local installer can give you a site-specific production estimate and projected savings based on your actual consumption and rates.

Summing Up

After solar, most homeowners pay $10-30 per month on average in fixed utility fees—a fraction of their pre-solar bill. The actual amount depends on your state’s net metering rules, how well your system is sized to your consumption, and season. In summer, you might pay almost nothing. In winter, you might pay $80-150. Over a full year, a well-sized system in a state with full net metering saves $1,000-1,500 annually. Use your last 12 months of bills to estimate your baseline, confirm your state’s net metering structure, and ask any installer for a detailed production estimate before signing.

Ready to get quotes from local installers? Call (855) 427-0058 or get a free quote to compare options in your area.

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