Questions, answered plainly

If yours isn't here, ask: hello@suntide.energy.

Before you pay anyone anything

My inverter app already does this for free. Why pay?

Your inverter app shows what happened. It does not price it. Suntide runs checks against your own tariff and puts a cost on each problem it finds. It checks every bill against your own readings. It draws tomorrow’s plan tonight, priced. Then it sends a monthly statement you can check against your meter. Your app keeps working alongside.

Will this affect my warranty or my installer’s settings?

Suntide changes only what you could change in the maker’s own app. It uses the manufacturer’s platform, with a key you issue and can revoke. Where an inverter accepts changes, Suntide can set the charge and discharge schedule and the charge current, and keep the clock correct. It never touches grid protection or safety settings. Every change is shown to you first, read back from the inverter, and recorded. When you leave, Suntide puts your own settings back. Some manufacturers restrict third-party control, so check your warranty terms. On an inverter that does not accept changes, Suntide only reads.

How much will I actually save?

It depends on your tariff and your current set-up. A well-tuned home may gain little from scheduling and still gain from bill checks, alerts and grid events. That is why the trial is free and the statement prints what Suntide cost beside what it earned. If the second number is not bigger, cancel.

What happens to my system if Suntide goes down, or the company folds?

Nothing changes at home. The schedule lives on your inverter, so your system carries on with its last plan. There is no box to remove. You hold a pause switch that stops every change. Your data exports in one step, and deleting your account puts your own settings back first.

What data do you hold, and who can see it?

Suntide holds your readings, your tariff, your bills’ figures and your home’s location for weather. Inverter keys are encrypted and never shown again. Suntide never asks for your inverter password. The main database is in London. There are no trackers and no advertising. The privacy policy names every provider.

Why pay £79 a year when Octopus does it in the tariff?

On a supplier-controlled tariff the supplier decides when your battery charges and sells. You take the result. With Suntide you keep any tariff from any supplier. You see the plan before it runs. You hold the switch. And your bills are checked by someone who is not the one sending them.

I already run Home Assistant. Why would I hand this over?

You do not have to. Keep Home Assistant. Suntide adds what it does not do. A statement checked against your meter. Bill checks. A record of what each plan would have saved, before you trust it. The Suntide Link has an open Home Assistant integration that reads your inverter locally every second. The Link is ordered through support.

Setting up

I don’t have solar, just a battery. Is Suntide for me?

Very much so. Battery-only homes doing tariff arbitrage (charge cheap overnight, carry the expensive evening) are some of the best-earning systems Suntide watches. The product adapts to what you actually have; it never shows you phantom panels.

Do you control my inverter?

Only when you say so. Suntide starts by reading. It scores your set-up and recommends changes, then checks from the data that each change worked. Where your inverter accepts it, you can also change charge times from Suntide. Every change is shown first, sent when you confirm, and read back from the inverter. A few features run on their own once you switch them on: grid events, the inverter clock and car protection. You hold a pause switch that stops all of it. Where an inverter does not take changes from outside, you make them in its own app, with Suntide’s fix steps.

What does the health check actually look at?

26 checks, run nightly against your settings, your readings, your bills and your meter. Charge windows against your cheap rate. A battery that empties before the peak ends. Reserve settings against your goals. Deep cycling against a long-life goal. Inverter clock drift and missed clock changes. Bills that do not match your readings. Each finding is priced at your own rates where it can be, with fix steps for your inverter’s app, and a check from the data that the fix worked.

What if my tariff or supplier isn’t listed?

You can describe any tariff on the 24-hour dial (named periods, prices, standing charge) wherever you live and whatever the currency. Nothing in Suntide requires a supported supplier.

Where is my data stored?

In the UK: AWS eu-west-2 (London). Exporting your data and deleting your account are built-in features, not support tickets. No third-party trackers anywhere.

What does it cost?

Watch is £3.99/month, Optimise is £7.99/month or £79/year. The trial is the full Optimise plan for 30 days, with no card. You pick a plan on day 30, or do nothing and it stops. Every monthly statement shows what Suntide earned you next to what it costs.

Still curious?

The quickest answer is to try it. Suntide is open, and setting up takes about ten minutes.