OwlOwlWatt pricing
One-time audit or ongoing subscription, no contract to get out of, and no commission from your installer.
- PVWatts-based expected production for your exact roof and weather
- Shortfall in kWh and dollars, with month-by-month charts
- Earlier completed years shown as a range (teaser), not exact
- No subscription required
Or keep OwlWatt watching with a lifetime plan that covers every completed year, past and future
- Everything in the standard plan, now and in the future, both tiers
- All future features at no extra cost
- Web/Stripe only · first 100 customers, shared across both tiers
Or choose a subscription
- Real-time monitoring (5-second with OwlWatt Iris)
- Per-panel data (Enphase systems)
- pvlib expected-production modeling
- Documented shortfall reports
- Production guarantee claim letter generation
- Home Assistant integration
- Bill verification & NEM math
- Email + dashboard support
- Everything in monthly
- Pay for 11 months, get 12
- Priority support response
- Annual production audit report
- Cancel anytime and keep access to the end of the paid period
Add hardware, on either subscription
- Optional collector, priced to break even, not a profit center
- Local, per-panel measurement at 5-second resolution
- Independent cross-check against your vendor's cloud numbers
- Keeps collecting if your installer or vendor API access ever goes away
What a monitoring service plan does not include
Repair-membership plans at $9 a month monitor your system and dispatch a technician when something breaks. None of them track your installer's production guarantee by contract year, compute the shortfall, or produce a claim report. OwlWatt keeps the production record outside your installer's and your servicer's systems.
Is it worth $9.99 to find out?
That's the question you're sitting with, so do the arithmetic with your own numbers rather than ours. Take the annual production your contract or proposal promised, then take the rate off your latest electric bill. The example below uses a system expected to make 10,000 kWh in a year at $0.30/kWh. It's an illustration and not a typical result, so yours will differ.
| Shortfall | Lost kWh/yr | Lost $/yr at $0.30 |
|---|---|---|
| 5% | 500 | $150 |
| 10% | 1,000 | $300 |
| 15% | 1,500 | $450 |
| 20% | 2,000 | $600 |
Most production guarantees are assessed per contract year, so a gap like this tends to repeat every year it goes unmeasured instead of costing you once. Even the 5% row, $150 a year, is more than the $87.89 annual subscription. At 10% it's roughly three and a half times what OwlWatt costs.
OwlWatt doesn't recover that money. We measure the gap and document it, with the model, the parameters and the data window behind the number. Whether a claim on your guarantee succeeds depends on what your contract says and, if it goes that far, on an attorney in your state. Your system may also be doing fine with no meaningful gap at all. That's worth knowing too, and today you have no way to find it out.
Frequently asked
Is there a free trial?
Yes, 30 days. Explore your dashboard and see whether a shortfall appears. The exact figures, your claim report, and the production guarantee claim letter become available when you subscribe. You don't need a credit card to start, but one is required only when you convert to a paid plan at the end of the trial.
Can I cancel anytime?
Yes. Cancel from the dashboard at any point. You keep access until the end of the current billing period. We keep your production history for 90 days after you cancel in case you change your mind, then delete it permanently.
Are there any hidden fees or upsells?
No. The subscription is our only revenue. We don't take commissions from solar installers, equipment vendors, or anyone else in the solar industry. That independence is why an OwlWatt production guarantee letter is worth anything to you in the first place.
Do I need to buy hardware?
Optional. OwlWatt works in cloud-only mode against your existing Enphase Enlighten account via OAuth. For 5-second resolution and offline resilience, you can add the OwlWatt Iris collector for $149 one-time, shipping included, on top of an active subscription, priced to break even rather than to make money on hardware. It requires an active OwlWatt subscription (monthly or annual). See how Iris fits into the architecture. The Founder Lifetime offer has a separate cloud-only tier ($399) and a +Iris tier ($499) that includes an owned OwlWatt Iris (not loaned) bundled into the one-time price. See the Founder Lifetime terms for details. That bundled Iris is a different purchase from adding the $149 Iris to a standard subscription.
What if my installer disputes the OwlWatt report?
Our reports cite the exact model (pvlib's PVWatts implementation), the exact parameters used (your system's DC nameplate capacity, tilt, azimuth, install date), and the exact data window. The full methodology is documented at /methodology. An installer disputing OwlWatt's math is disputing PVWatts itself, the model NREL publishes and the industry uses for system design. If a dispute escalates, a consumer protection attorney in your state can use our documentation as evidence.
Does OwlWatt work with my system?
Today: Enphase (any IQ-series microinverter system, IQ Gateway required) and SolarEdge (through your SolarEdge cloud account, no hardware). See what SolarEdge owners get. Per-panel and live data are Enphase-only. String inverters from SMA, Fronius, and others are on the roadmap. If you're unsure, email [email protected] with your system specs before signing up.
What if I sell my house?
Your OwlWatt account and historical data are transferable to the new homeowner if they want to continue the subscription. Otherwise, the account closes and the data is deleted on the standard 90-day schedule.