Free home battery report
The free home battery report checks whether your home battery is doing what you want. It works with Tesla Powerwall. You don’t need a Grid Getter account first, and there is no password: you give an email address, we email you a code to sign in, you connect Tesla, and you get a report. Start at app.gridgetter.com/free-report.
What it reads
Section titled “What it reads”With your consent, Grid Getter reads three things from Tesla, read-only:
- your energy history (how your home, solar, battery and the grid have moved power)
- your site info (the battery and the site settings)
- your backup history (the outages your battery covered)
The report is built on your last 30 days, and it also looks back over the past year, month by month. If your system is less than a year old, it looks back to when you installed it.
What the report leads with
Section titled “What the report leads with”The headline follows the first goal you picked:
- Demand charge: your biggest demand peak this year, with the date and time it happened. Once we know your demand rate, it shows what that peak cost you, priced at the rate for that month (on a seasonal plan like SRP E-27, July and August cost more per kW), and what your demand charges came to over the past year. Before that, it shows the peak in kW and asks which plan you’re on: your likely plan is shown first, or search by ZIP code. Your plan answers the question for you: one with a demand charge prices the card, and one without saves “no demand charge” straight away, with nothing more to confirm. Either way the plan you picked is kept as your plan if you keep your account. Build a custom plan lets you type your $/kW rate instead. Once the card is priced, the line under it says where the rate came from. If it’s the plan we matched from your Tesla account (“from your Tesla plan”), Not your plan? reopens the plan picker so you can pick the right one; a rate you typed or a plan you picked shows Not your rate? instead. Long search results stay about six plans tall and scroll; picking one folds the others away behind Show N other plans. When the data shows why the battery didn’t cover the peak, the headline says so: it sat full at 100%, or it sat at your backup reserve. It also shows the lowest peak Grid Getter could have held that month to, and what that would have saved, based on how much charge the battery had when the peak window opened and how much power it can deliver at once. Neither line appears when your demand card says you’re on track.
- Peak-rate cost: how much a month you could have saved on power bought at peak rates. If your plan has no peak period (most UK plans), it says “your most expensive hours” instead. With less than 30 days of data, the monthly figure is an estimate from the days we have, and the headline says how many.
- Backup: the outages your battery carried you through.
- Battery protection: how much your battery keeps in reserve. With no reserve set, the next figure leads instead.
- I don’t know: the biggest money figure we found. That’s your demand charges for the past year when you pay one, otherwise what you could save at peak rates. Only when there’s no money figure does it show how much of your home ran on sun and battery. Like the Tesla app’s Self-Powered figure, that counts all the energy your battery supplied to your home, including energy it charged from the grid (say, overnight on a cheap rate). Power the grid sent into your battery isn’t counted as your home using the grid. If Tesla doesn’t say how much of your battery’s charge came from the grid, the report leaves this figure out rather than guess.
With a demand goal, a card under the headline shows each month’s peak, or its cost once your rate is known (choose $ or kW), next to your last 30 days. Tap a bar to see that month’s peak. The card also shows your total demand charges for the past year, the time of day your biggest peaks tend to land, and where your rate came from. If the past year doesn’t load, the card covers your last 30 days and offers Try again.
Money is shown in the currency of your rate plan in the Tesla app (for example £ in the UK, A$ in Australia, € in the eurozone), and the money toggle uses that symbol. If your Tesla rate plan has no currency, we go by your home’s time zone. If we still can’t tell your currency, the report shows your peaks in kW and your energy in kWh, with no money figures.
If Tesla doesn’t have a rate plan saved for your home, the report asks Which rate plan are you on? before it shows your figures. Pick your plan and the report re-reads your history with it, which can take a few seconds. Enter your ZIP code, click Search, pick your plan, click Continue to check its rates, then Use this plan. Click Skip for now to see the report without one; cost goals then say “Can’t tell yet”. If the plan you picked differs from the rates in your Tesla app, the report shows the difference for your information and a Continue button. The report uses the plan you picked, and it never changes your Tesla settings.
It is a one-time report. The access you grant can read this data and nothing else. It can’t change any setting on your battery.
Before you connect, the report shows exactly what Tesla will ask you to approve:
- Energy data, read-only: the energy history, live power flow, backup events and site settings above
- Sign in with Tesla: confirms it’s your account; we never see your Tesla password
- Stay connected for 24 hours: so we can finish reading without asking you to sign in again
It never asks for permission to change a battery setting, for your vehicles, or for your Tesla profile or payment details.
How long we keep it
Section titled “How long we keep it”| What | How long |
|---|---|
| Our Tesla access | Deleted 24 hours after you connect Tesla |
| Your report and account | Deleted after 30 days, unless you keep them |
| Your email | Stays on the Grid Getter tips list after that automatic expiry, until you unsubscribe |
If our access has ended before your report was read, the report page asks you to connect Tesla again.
To end our access sooner, choose Remove our Tesla access now on your report. It deletes our Tesla access right away; your report stays until you delete it or it expires.
You can also remove Grid Getter yourself at any time in the Tesla app: open Security & Privacy, then Third-party apps, tap Grid Getter, and choose Remove access. Your report and both report emails also link Tesla’s own page for this (Tesla asks you to sign in first).
Delete everything when you say so
Section titled “Delete everything when you say so”Your report has a Delete everything now button (so does the reading screen if something goes wrong, and both report emails link to it). It deletes your report, your account and our Tesla access right away. It also removes your email from our list. It can’t be undone.
If you come back later, enter your email at app.gridgetter.com/free-report and choose Sign in to get a new code. On a shared computer, use Sign out at the top of the page when you’re done. Signing out leaves your report in place.
Keep your account
Section titled “Keep your account”If you like what you see, choose Keep my account on your report or in the reminder email (sign in with your email first if you’re asked). You’ll get a 30-day free trial of a Grid Getter plan, and the report becomes part of a normal account that stays after 30 days.
Running automations is different from reading your data, so Tesla asks you to approve full permission at this step. Until you do, Grid Getter can’t change anything on your battery.
Each Powerwall can be run by one Grid Getter account. If another account already runs yours, this approval can’t finish, and you’ll see “We couldn’t connect to Tesla. Try again.” Trying again gets the same result. Your report account is kept, but it can’t run that Powerwall, so see what to do.
After you approve, keeping your account takes three short steps.
Your plan. Grid Getter builds your plan from the report you already have. The figures are the ones in your report, so they match what you just read, and you won’t be asked again for your goals, your rate plan or your demand charge if the report already had them. This holds for a day after you keep your account. If you come back to it later, Grid Getter builds your plan from your battery’s latest data instead.
Choose a plan. Pick Scheduled or Adaptive to start the 30-day free trial, or carry on with the free plan. The 30-day trial applies when you choose within a day of keeping your account; after that, the usual trial applies.
Set a password. From now on you sign in to Grid Getter with your email and a password, not an emailed code, so the last step asks you to choose one. If you close the page before you get there, Grid Getter asks for the password the next time you sign in. If you can’t sign in at all, choose Forgot your password? on the sign-in page and we’ll email you a code to set one.
Privacy
Section titled “Privacy”See the privacy policy for how Grid Getter handles your data.