How to pull your last 12 months of NV Energy usage

Before you take a single solar quote, get two things out of your NV Energy account: 12 months of kilowatt hours, and your usage in 15 minute intervals. The first one sizes a system. The second one is the exact data the daily demand charge scheduled for January 1 2027 will be billed on. Both of them belong to you, and having them turns a sales conversation into an arithmetic conversation.

Why this is the highest value hour you will spend

A solar proposal is a set of assumptions about your house dressed up as a number. Almost all of the assumptions come from one input: how much electricity you use and when.

If that input is a guess, or one summer bill, or a national average, everything downstream of it is decoration. System size, production estimate, what the bill looks like afterwards, whether a battery has an argument, all of it moves when the usage moves.

So the homeowner who walks into three quotes holding the same 12 month file gets three comparable answers. The homeowner who does not gets three different stories and no way to tell which is closer to true.

The three things you are trying to come away with

One. Twelve months of kilowatt hours, month by month. Not a total, not an average, the 12 numbers. A Las Vegas year is not flat and a system sized on a slice of it is sized wrong in a predictable direction.

Two. Interval data, in 15 minute blocks, for at least one hot week and one cold week. This is the one almost nobody asks for and it is the one that is about to matter most. NV Energy's daily demand fact sheet, dated June 2026, says the charge "is calculated based on each customer's highest 15-minute interval of electricity use and this resets every day of the month." If the charge is priced on your worst quarter hour, you want to know what your worst quarter hour is.

Three. Which rate schedule you are actually on. It is printed on the bill. NV Energy's own bill guide calls it the rate class and describes it as "the type of service received at this address, which determines your usage rate, Basic Service Charge, public policy charges and credits." A standard residential customer and a time of use customer and a net metering customer are three different arithmetic problems.

Where it lives, and why we are not printing a click path

NV Energy's site is built so that its page text is not readable to anything except a browser. We can read the site's own XML sitemap, and on 2026-09-20 it lists these addresses:

Those addresses are real and we read them out of NV Energy's own file. What we are not going to do is print a sequence of menu labels and buttons. Utility sites get redesigned, the wording on this one is not something we can verify from outside a logged in session, and a confident click path that is six months stale is worse than no click path at all, because you will assume you did it wrong.

So the instruction is: get into your account, find the part of it that shows usage rather than payments, and look for the most detailed view and the export option. The words on the buttons may not match anything written here, and that is fine. You know what you are looking for.

The steps, in order

1. Sign in, or register. You need your account number, which is printed on any bill. If the account is in a former owner's or a spouse's name, fix that first. Usage history follows the account, not the address.
2. Go to usage, not to billing history. Billing history is dollars. Usage is kilowatt hours. People bring us the wrong one constantly, and the wrong one cannot size anything.
3. Set the range to 12 months. Take all 12 monthly figures and the annual total.
4. Look for the most granular view available, and for a download. Daily is better than monthly. Hourly is better than daily. Fifteen minute is what you actually want, because that is the block the demand charge measures.
5. Take a file, not a screenshot. You are going to sort this. A picture of a bar chart cannot tell you which quarter hour in July was your worst.
6. If you are offered Green Button, take it. More on that below.
7. Note your rate class off the bill while you are at it.
8. Sort the interval file and pull out the single largest 15 minute average in July or August, and the largest one in a winter month. Keep both.

Ask for Green Button by name

Green Button is a standard, not a product, and asking for it by name is the fastest way past a support conversation about what you mean.

The Department of Energy describes it as an effort "to provide utility customers with easy and secure access to their energy usage information in a consumer-friendly and computer-friendly format." Download My Data means "the utility customer can download their own energy consumption data directly to their own computer." It is built on the Energy Services Provider Interface standard and uses "a common XML format for energy usage information."

We are not going to tell you that NV Energy offers it, because we could not verify that from outside an account. We are telling you it is the right thing to ask for, and that an XML or spreadsheet export of any kind does the same job.

If the online route does not get you interval data

It may not, and there are two clean fallbacks. Neither requires anybody's permission but yours.

Your own 12 bills. Every NV Energy residential bill already carries usage history. The bill guide describes the usage panel as "Data from this month, last month and last year to help you track increases or decreases in your energy use," and the sample bill prints a 12 month bar chart of total kilowatt hours, this year against last year. If you have a year of paper or PDF bills, you already have item one on the list. What bills will not give you is item two.

Call the number printed on your bill. Ask for your usage in 15 minute intervals for a specific date range, and ask for it as a file by email. Naming the interval length matters, because "my usage" will get you a monthly summary.

And a third option we would rather you did not use first. Most solar companies will offer to pull your data for you. That means giving a company authorisation to access your utility account, which is a real permission with a real scope, and it means the first set of numbers you see has already passed through somebody who is selling you something. Get the file yourself, then hand the same file to everybody. It costs you an hour and it is the single strongest position a homeowner can be in.

What each number is for, once you have it

The annual kilowatt hour total sizes the array. That is the headline input, and it is the one everybody uses.

The 12 monthly figures tell you the shape. A house with a flat profile and a house with a huge summer are different design problems even at the same annual total, because of how Nevada credits what you export. Under the open net metering tier, an exported kilowatt hour is credited at 75 percent of the retail rate while one you use yourself offsets the full rate, which is set out in what 75 percent of retail actually costs you. Shape decides how much of your production you keep.

The worst 15 minute average is the demand charge. Take that number in kilowatts and multiply by $0.14, the rate reported for the charge, and then by the days in the month. The Nevada Independent, on May 7 2026, described it the same way: customers "will be charged 14 cents per kilowatt of power that they use during their highest 15 minutes of usage on a single day." That product is your estimate, built on your data rather than on an average, and it beats anything anybody can tell you at your kitchen table. The whole charge is set out in NV Energy's daily demand charge, explained.

The interval file also tells you what is making the peak. A 15 minute series has a shape you can recognise. Air conditioning cycles. A vehicle charger is a long flat block. A pool pump is a steady step that starts and stops at the same time every day, which is the thing we go through in your pool pump is probably setting your demand charge.

The evening block answers the battery question. How many kilowatt hours you actually use between 6 and 9 pm in July is not a matter of opinion once you have the file.

What a good quote does with your file, and what a bad one does

You will find out a lot about a company by watching what happens to the file after you hand it over.

Good signs. They give you back your annual total and your peak month and they match your file. They tell you the production estimate in kilowatt hours a year, not in dollars. They ask which rate schedule you are on before they price anything. They say out loud how much of your production they expect you to use in the house versus export.

Warning signs. A proposal whose usage number you cannot find in your own data. A monthly bill estimate with no annual kilowatt hour figure behind it. Sizing from one summer bill. Any unwillingness to work from the file you brought.

Actual utility rates may move and any estimate built on today's schedule is an estimate. That is exactly why the input should be your own measured data rather than somebody's assumption.

The honest limits of this page

Two of them, and we would rather say them than have you discover them.

Menu wording changes and we cannot see it from here. The addresses above came out of NV Energy's own sitemap on this page's checked on date. The words inside those pages did not, because that content does not render to anything but a browser. If what you see does not match, trust the screen and not us, and the shape of what you are hunting for is still right.

Not every account has the same data available. Interval data depends on the meter and on what the account is enrolled in, and a recently opened account will not have 12 months of anything. If you moved in six months ago, take the six months you have, say so to whoever is quoting you, and expect them to say how they filled the gap.

What we would tell you if you called us today

Bring the file. That is the whole ask.

We would rather look at a year of your real numbers than at a photograph of one bill, and we would rather tell you that your roof is a poor candidate on the strength of your own data than sell you something that the data does not support. If you want to know what your bill is doing before you get that far, start with how to read an NV Energy bill with solar on it.

And if you only do one thing from this page, do step four. Everybody in this market can quote from a monthly total. Almost nobody is looking at your quarter hours, and from January 1 2027 that is where a new line on your bill gets decided.

We recheck this page quarterly. Last checked 2026-09-20. If a number here has moved, tell us and we will fix it the same week.