Idaho Power Solar Net Metering: How It Works and How to Get Credited

By Ethan Brooks

Updated November 2026

Idaho Power solar net metering lets Idaho homeowners with a grid-tied solar system send extra electricity to the utility and receive bill credits for it. This guide walks through how the program works, what you need before you apply, how credits are calculated, and what to check once your system is running. By the end, you should know which steps to complete and what to expect from your monthly bill.

What Idaho Power Net Metering Actually Does

Under net metering, your solar array feeds electricity into your home first. Any power your panels produce beyond what your household is using flows back onto the Idaho Power grid. Your meter records both directions, and the utility applies credits to offset the energy you draw from the grid at night, on cloudy days, or during peak usage. Your bill reflects the net difference between what you pulled and what you sent back.

Two points matter most for homeowners. First, the credit is tied to the energy you export, so the size of your system and your household’s daily usage shape how much you save. Second, the rules around credits, rates and eligibility can change through Idaho Public Utilities Commission decisions, so always confirm current terms with Idaho Power before you finalize a design.

Step 1: Confirm Your System Meets Eligibility Rules

Before you submit anything, check that your installation fits the program. Idaho Power generally reviews the system’s total capacity, its inverter specifications and whether it will be interconnected to a service that is already in the utility’s territory. Systems are typically sized to offset some or all of a home’s annual consumption, and oversized systems may need additional review.

Gather these items before you start:

• Your Idaho Power account number and the service address
• Twelve months of electricity bills so you can estimate annual usage
• Panel count, panel wattage and total DC system size in kilowatts
• The inverter make, model and AC output rating
• A single-line electrical diagram, usually drawn by your installer or electrician
• Site plan showing roof layout and the location of the main service panel and meter

Step 2: Size Your System Against Your Usage

Most homeowners aim for a system that covers a large share of annual kilowatt-hours without producing a big surplus in summer. Divide your yearly usage in kilowatt-hours by the expected annual output per kilowatt of installed capacity in your area. Idaho’s long, sunny summers mean production is high in June through August, while winter output drops considerably. Your installer should model this with local irradiance data.

Example Sizing Calculation

Suppose your household uses 12,000 kWh per year. If a 1 kW system in southern Idaho produces roughly 1,500 kWh annually, a 7 kW system would produce about 10,500 kWh. That covers most of your use, and the remainder would come from the grid during winter months when credits from summer exports help offset the bill.

These figures are illustrative. Actual output depends on roof orientation, tilt, shading and local weather, so have your installer run a site-specific estimate.

Step 3: Complete the Interconnection Application

Idaho Power requires an interconnection application before your system is energized. This is the document that describes your equipment and confirms it meets utility safety standards. You or your installer will usually submit it online or through the utility’s distributed generation process. Expect to provide the system specifications from Step 1 and a signed authorization if a contractor is filing on your behalf.

For a more detailed look at forms and timing, see Idaho Power Net Metering Application: Steps, Forms and Timeline. Keep copies of every submission and the utility’s acknowledgment emails.

Step 4: Install and Pass Inspection

Once the application is approved, the system can be installed. Licensed electrical work is required in most cases, and local building or electrical inspectors must sign off before the utility will set up the bidirectional meter and allow the system to operate. Ask your installer whether they handle the inspection scheduling and whether the meter swap is coordinated with the utility.

Step 5: Understand How Your Credits Are Calculated

Idaho Power applies credits based on the energy your system exports and the rate structure in effect for your account. Credits appear on your monthly bill and can carry forward. Some net metering programs roll unused credits over month to month and settle at the end of the billing year. Read your rate schedule and confirm how any remaining balance is handled at year end.

If you want to compare how a similar credit system works in another service territory, Xcel Net Metering Rates: How Your Solar Credit Is Calculated (Step-by-Step) shows a parallel calculation. For a broader overview of how credits offset bills, see Solar PV Net Metering Explained: How It Works and Credits Your Bill.

Reading Your First Bill

1. Find the energy imported from the grid, measured in kWh.
2. Find the energy exported to the grid for the same period.
3. Check how the credit is applied and whether any balance carries forward.
4. Compare the net charge against your pre-solar bills to confirm savings.

Net Metering or Net Billing?

Idaho Power’s approach to exports can differ from pure net metering in some tariff structures, and some utilities nationwide have moved toward net billing with lower export rates. Before committing to a design oversized for summer exports, confirm which framework applies to your account. Net Metering for Solar Power vs Net Billing: Which Should You Choose? explains the trade-offs in plain terms.

Common Mistakes to Avoid

• Oversizing for summer. A system that produces far more than you use in summer may generate credits you cannot fully use before the billing year ends.
• Skipping the single-line diagram. Incomplete paperwork is the most frequent cause of application delays.
• Assuming today’s rules last forever. Rate structures and export terms can change, so re-check before major decisions.
• Ignoring shading. A single shaded module can reduce output more than expected in string-wired systems.
• Turning on the system before the meter is changed. Operate only after the utility has installed the bidirectional meter and approved the interconnection.

Tips for a Smooth Process

• Ask your installer for a production estimate using local weather data, not generic numbers.
• Keep a folder with applications, inspection reports, meter change confirmations and every bill.
• Check your first three bills against your modeled production to catch any metering problems early.
• Consider how a battery might change your export strategy if you want to store midday surplus.

Recommended gear

A few tools make monitoring and maintenance easier once your system is live.

• Fluke 117 Electrician’s Multimeter helps you verify voltage and continuity on circuits during inspections or basic troubleshooting. View on Amazon
• Enphase Envoy Gateway provides production monitoring for microinverter-based systems, so you can compare daily output with your bill. View on Amazon
• Klein Tools Non-Contact Voltage Tester offers a quick safety check before you open panels or disconnects. View on Amazon

FAQ

Does Idaho Power pay cash for solar exports?

Under net metering, exports generally offset your bill through credits rather than cash payments. Check your current rate schedule for how any leftover balance is settled.

How long does the process take?

Timelines vary with application volume, inspection scheduling and meter installation. Plan for several months from application to full operation and confirm current estimates with Idaho Power.

Do I need a battery to qualify?

A battery is not usually required for a grid-tied system to qualify for net metering, but it can change how you use exported energy. Confirm requirements for your specific tariff.

What happens to credits at the end of the year?

Many net metering tariffs settle remaining credits annually. Review your rate schedule to see whether balances expire, roll forward or are paid out.

Can I add more panels later?

Expansions typically require a new or amended interconnection application, since the utility needs updated system specifications. Contact Idaho Power before adding capacity.

Will my solar system work during a grid outage?

Standard grid-tied systems shut down during outages for safety reasons. Backup power requires a battery or other equipment designed for islanding, along with a qualified installer.

Should I hire a professional installer?

Yes, for most homeowners. Solar installations involve high-voltage DC and grid interconnection work. Consult a licensed electrician or solar professional for design, installation and inspection.

Conclusion

Idaho Power solar net metering rewards homeowners who size their systems carefully, complete the interconnection process accurately and monitor their bills after installation. Start by gathering your usage history and system specifications, then work through the application with your installer. Keep records and check your credits each month to confirm the system performs as modeled.

About Ethan Brooks

Ethan Brooks is part of our editorial team and reviews and edits our home solar guides, checking product details against manufacturer specifications and owner feedback.