Last updated 8 September 2026. When we say Zero kW, we, our or us, we mean Zero kW and the service at zerokw.com. When we say you or your, we mean the person or organization that owns an account. Using the service means agreeing to these terms.

• You are responsible for keeping your account and password secure. We cannot be liable for loss or damage from a failure to do so.
• You are responsible for what happens under your account, including anything done by people you give access to.
• You must be a person. Accounts registered by bots are not permitted.
• One account may cover several sites, subject to the plan you are on.

This is the part of these terms most worth reading, because it is the part where software does something physical.

• We only control equipment you have connected and authorized, and only in the ways described on the page where you connected it. Withdrawing that authorization stops it immediately.
• Automatic dispatch is off unless you turn it on, is available only on plans that include it, and stops working if that plan lapses. With it off, we tell you a peak day is coming and acting on it remains your decision.
• Every change we make is temporary and is put back. A device is returned to the state it was in before an event, not to a default we chose.
• You can stop an event at any time, from the service or by operating the equipment yourself. Opting out of an event is always available and we will never treat it as a breach of these terms.
• You remain responsible for your own premises. Do not enrol equipment whose interruption would be unsafe, damage stock or process, or affect anyone's health — medical equipment, life safety systems, and refrigeration or process loads with no tolerance for interruption should not be connected. We cannot know what is on the other end of a connection; you can.

• Reductions are measured against a CAISO-style 10-in-10 baseline from your meter or your equipment's own telemetry, and we show you which was used. It is a measurement, not a promise of payment.
• Your utility or program administrator decides what you are paid, using their own settlement process. Our figures may differ from theirs, and theirs governs.
• Bill analysis, savings estimates and rebate eligibility are modeled from published tariffs and public program data. Tariffs change and programs close. Check anything you are relying on with your utility before you act on it.
• We do not guarantee that using this service will reduce your bill.

• Your data is yours. You give us a limited license to use it in order to provide the service, and we claim no ownership of it.
• Interval readings are kept indefinitely, at the resolution they arrive in. We do not expire, thin, average or roll them up, and we have no plans to. The value of interval data is in comparison — this August against last August, this event against a season that has already passed — and a down-sampled history answers none of it. A discarded quarter hour cannot be recovered: your utility will not re-issue it forever, and most customer portals only offer a rolling window of a few months.
• Indefinitely means we never expire it on our own initiative. It has never meant keeping it against your wishes. Delete your account and every reading goes with it, immediately. That right is not something we trade away for a better dataset.
• We do not sell your data and we do not share it for anyone else's advertising. What we do with it is set out in our privacy policy.
• Under the California Consumer Privacy Act we act as a service provider: we process what you give us for the purpose you signed up for and for nothing else.

• The free plan is genuinely free. We do not ask for a card, and we do not sell the data of free or paying customers alike.
• Paid plans are charged in advance. Upgrading charges immediately and starts a new billing cycle; downgrading takes effect at the next one.
• If a payment fails we will tell you, and the plan keeps working until the end of the period you have paid for.
• Prices exclude taxes, which we collect and remit where required.
• If something goes wrong at our end, or you are charged for something you did not use, write to us and we will sort it out. We would rather refund you than argue.

• You can cancel at any time from your account page. Canceling takes effect immediately and you will not be charged again.
• Deleting your account deletes your data immediately and completely. There is no grace period and no archived copy — when it finishes there is nothing left to restore. That is worth knowing in both directions, so export anything you want to keep first.
• Two things deletion does not reach, and we would rather say so here than have you discover it: your payment history stays with Stripe, who keep it for their own tax and accounting obligations, and an authorization you gave a utility or a device vendor should also be revoked in their own app — we destroy our copy, but we cannot clear theirs.
• We may suspend or close an account that is used to harm somebody, to break the law, or to abuse our staff.

• Your use of the service is at your own risk. It is provided on an as is and as available basis, without warranty of any kind.
• We take uptime seriously and do not offer a service-level agreement. An outage may mean an alert does not reach you or an event is not dispatched.
• We test what we ship and it still has bugs. We do not guarantee the service will meet your particular requirements.
• We may change or discontinue parts of the service. If a change materially affects what you are paying for, we will tell you by email before it takes effect.
• Our liability is limited to the amount you have paid us in the twelve months before the claim. We are not liable for indirect or consequential loss, including lost savings, lost incentive payments, or business interruption.

We may update these terms. If a change materially affects your rights or what we do with data we already hold, we will email you before it takes effect rather than quietly changing the date at the top. Questions about any of this: privacy@zerokw.com.

Adapted from the Basecamp open-source policies (github.com/basecamp/policies) / CC BY 4.0. The sections on curtailment, measurement and data retention are our own, because they describe things a general software license does not cover.