By Claire WhitakerUpdated November 2026
Net metering in Colorado is the program most homeowners with rooftop solar will encounter first, and for many households it is the simpler and more generous choice. Net billing, the alternative many utilities move customers toward, pays for exported power at a lower and often time-dependent rate. If you can keep your exports small and your usage high during the day, net metering usually wins. If you plan to send a lot of power back to the grid, or your utility has already moved you to a time-of-use export schedule, you should compare both carefully before you sign.
This comparison looks at the two main ways Colorado homeowners get credited for solar electricity they send to the grid. It covers how each works, how the credits show up on your bill, what each means for system sizing, and which reader each option suits best. Read it alongside your utility’s tariff sheet, since rules and rate schedules change.
Quick Comparison Table
| Criterion | Net Metering | Net Billing |
|---|---|---|
| How exports are credited | Excess kWh offset kWh you draw from the grid, usually 1:1 over the billing period | Exports are valued at a separate rate, often tied to wholesale or avoided-cost pricing |
| Time-of-day sensitivity | Low. A kWh exported at noon can offset a kWh used at 8 p.m. | High. Midday exports may be worth much less than evening imports |
| Bill predictability | Generally easier to forecast from monthly production estimates | Harder to forecast; depends on hourly rates and your usage pattern |
| System sizing strategy | Sizing near annual usage works well, since surplus is banked | Oversizing often hurts payback; batteries may be needed to shift exports |
| Battery storage value | Helpful mainly for backup and outage resilience | Can add meaningful value by storing midday power for evening use |
| Best fit | Homes with moderate, steady usage and roofs sized to match it | Homes with large daytime production, or utilities that have already switched |
Crediting Method: Which Option Gives You More Value Per kWh?
Under net metering, your meter runs backward when your panels produce more than your home uses. Those surplus kilowatt-hours are banked as credits and applied against future consumption, typically at the full retail rate. In practice, a kWh you export on a sunny afternoon can cancel a kWh you draw on a cloudy evening. That one-to-one treatment is the core benefit of net metering.
Net billing separates the two directions of flow. Your imports are billed at the normal retail rate, but your exports are credited at a separate, usually lower, rate. Depending on the tariff, that export rate may follow wholesale electricity prices or a published avoided-cost schedule. Because midday wholesale prices are often lower than evening peaks, the gap between what you pay and what you earn for exports can be substantial.
Winner: Net metering. For the same kWh exported, net metering delivers full retail value in most cases, while net billing returns a fraction of that. The only exception is when your export rate under net billing happens to be comparable to retail, which is uncommon for residential customers.
Bill Predictability: Which Is Easier to Forecast?
Net metering bills are easier to estimate. Take your system’s expected annual output from your installer’s production model, compare it to your typical monthly usage, and you can get a reasonable idea of what your bill will look like. Credits roll over month to month, so a strong summer can offset a weaker winter.
Net billing bills require more homework. Your result depends on when you export and when you import, and on the hourly or seasonal rate schedule your utility uses. Two households with identical systems and identical annual usage can end up with very different bills if one runs the dishwasher at noon and the other at night. If you want to model this, pull at least twelve months of interval data from your utility portal and run the numbers hour by hour.
Winner: Net metering. Its simpler math makes it far easier to plan a household budget around. Net billing rewards people who are willing to track their usage closely.
System Sizing: Which Option Rewards the Right Size?
Under net metering, sizing a system to roughly match your annual consumption is a sound strategy. Surplus exports in summer pay down winter draws, so you rarely waste production. Oversizing can still create a surplus that ends up credited at a lower value or limited by annual true-up rules, so check how your utility handles year-end balances before you add panels.
Under net billing, bigger is not automatically better. Because exports earn less, a large array that pushes most of its output to the grid at midday may pay back more slowly than a smaller system that covers your daytime load. Many installers working in net billing territories recommend sizing toward self-consumption and, where the economics justify it, adding storage to capture midday power for evening use.
Winner: Net metering for households that want a straightforward sizing rule. Net billing rewards careful engineering, including storage, but demands more analysis up front.
Battery Storage: Which Option Makes Batteries Worth It?
Under net metering, a battery’s main value is backup power during outages and the ability to use stored solar at night when rates are high. Because exports already earn full retail credit, the financial case for storage on pure bill savings is thinner.
Under net billing, storage can change the math considerably. A battery lets you shift midday surplus into the evening peak, when you would otherwise import expensive power. Your battery system should be sized to your nightly load, and your inverter must support the battery and the grid connection your utility requires. Confirm the interconnection rules with your utility and installer before buying hardware.
Winner: Net billing, when the rate spread between peak and off-peak is wide enough to justify a battery. Net metering makes storage a backup decision more than a savings decision.
Which Should You Choose?
- Choose net metering if your daytime production roughly matches or is somewhat below your household usage, your load is fairly steady across the day, and you want a predictable bill with minimal tracking.
- Choose net metering if you plan to size your array near your annual consumption and do not want to commit to a battery purchase for financial reasons.
- Choose net billing if you have large midday loads (for example, a home business, EV charging during the day, or heat pump operation) that absorb most of your solar before it reaches the grid.
- Choose net billing if you are willing to add battery storage and want to capture the spread between midday exports and evening imports.
- Consult your utility’s tariff schedule first. If you are already on net billing or have been notified of a transition, plan your system around that structure from the start.
Before choosing, request your utility’s current interconnection and export rate documents, and ask your installer to model both scenarios using your actual interval usage data. A licensed electrician or solar installer should confirm any wiring, inverter, or battery changes, and a tax or financial advisor can help you weigh the long-term picture.
For a closer look at how a specific utility handles these rules, see Xcel Energy Net Metering (2026): Which Is Better for Your Home? and Rocky Mountain Power Net Metering (2026): Which Is Better for Your Home?. If your bill looks higher than you expected after installation, Why Is My Net Metering Electricity Bill Still High? 6 Causes and Fixes walks through the usual culprits. For a general primer on how the credits work, read Solar PV Net Metering Explained: How It Works and Credits Your Bill, and if you are considering shared arrangements, What Is Group Net Metering? How Shared Solar Credits Work covers that alternative.
Products for Each Setup
Your choice of crediting method affects which hardware makes sense. Under net metering, a standard grid-tied inverter is usually enough. Under net billing, many homeowners add a battery and a hybrid inverter that can manage both storage and grid export.
Net metering option: A grid-tied string inverter such as the SolarEdge SE7600H-US paired with a monitoring app gives you the production data you need to track credits. View on Amazon
Net billing option: A battery-ready hybrid inverter such as the Sol-Ark 12K gives you storage capability to shift midday exports to evening use. View on Amazon
Check that any inverter or battery you buy is listed as compatible with your utility’s interconnection requirements before ordering, and have a licensed installer handle the connection.
FAQ
Does Colorado still offer net metering to new solar customers?
Colorado utilities have offered net metering for residential rooftop systems, but some have moved toward net billing or time-based export credits. Contact your utility directly and ask for its current tariff for new interconnections, since the terms that apply when you apply can differ from older agreements.
What happens to extra credits at the end of the year?
Treatment varies by utility. Some roll credits forward indefinitely, while others pay out or reset surplus at an annual true-up date at a lower rate. Read your interconnection agreement to see which applies to you.
Is net billing always worse than net metering?
For most households, yes, because exports earn less. However, a home with large daytime loads and a battery can sometimes come out ahead under net billing. Run a side-by-side model with your own interval data before deciding.
Can I switch between net metering and net billing after installation?
Switching usually depends on utility policy and the date your system was interconnected. Some tariffs grandfather existing systems, while others require new customers to accept the current structure. Ask your utility in writing.
Do I need a professional to evaluate my options?
Yes, it is a good idea. A licensed solar installer can model both crediting methods with your usage data, and a licensed electrician must handle any interconnection or panel work. A financial advisor can help with the longer-term decision.
Conclusion
For most Colorado homeowners, net metering offers a simpler, more generous way to credit solar exports, while net billing rewards those who can use or store midday power. Start by pulling your utility’s current tariff and your twelve months of usage data, then compare both models before committing to a system size or battery. A licensed installer and your utility can confirm the final numbers for your address.
About Claire Whitaker
Claire Whitaker is part of our editorial team and reviews and edits our home solar guides, checking product details against manufacturer specifications and owner feedback.
