For SunPower & Enphase owners

Is your solar still working?

Most owners can’t tell, and the bill is the last to say so. See every panel, and what each one is costing you.

Expected true-upA panel diesYou hear nothingYou notice3 months laterTHE BLIND SPOTMarAprMayAug

Built for you

Not SunPower. Not an installer.

Your data

We never sell it. Export it anytime.

30-day money-back

Not for you? Full refund.

A real person

Email me. You’ll get a human.

What silence costs.

None of these announce themselves. All of them show up on the bill.

ohm sweet ohmThis one’s darkcosting you $31/mo
One dead panelOne 425 W panel at $0.45/kWh makes about 820 kWh a year — roughly $31 a month.425 W, stops producing
$370a year
Shade you never mappedThe shade analyzer's own annual total on one real roof, priced at that home's rate plan. An estimate, modelled from clear days — your roof will differ.estimated on a real roof
$676a year
A panel fading, not dead820 kWh a year running 24% short, at $0.45/kWh.24% below the rest of your array — invisible without per-panel data
$89a year

So we monitor and analyze everything.

One small plug-and-play monitor, every single panel.

6.8kW
producing
2.4kW
home use
4.4kW
to grid
Live viewEvery panel, as it produces. If your system has consumption meters, your home use and grid flow too.
SunriseSunsetshaded until mid-morning

One panel. The shaded area is the power it never made.

$676a yearWest$260South$246East$87North$83

Biggest win: the West face, $260 a year

$30Jan$37Feb$55Mar$68Apr$80May$82Jun$83Jul$75Aug$60Sep$46Oct$32Nov$27Dec

Worst in summer, when your roof makes the most.

Measured on clear days, projected across the year.

Shade cost analyzerMeasured per panel, summarized per roof face.How shade shows up in your data →
147 WDC in4 W lost as heat143 WAC outSolar panelMicroinverterGrid
97%of your panel’s power gets through — typical, over a week
Two devices, monitored separatelyYour panel and its microinverter are warrantied independently — now you can monitor them independently.

How can I help you?

What’s working today, and what’s next. Tell me which you need.

Want me to look at it with you?A 45-minute energy review — your solar, your bill, what to do next. Monitor included.

Working today

Per-panel monitoring

Every panel, every 15 minutes.

Shade analyzer

What shade costs, by roof face.

Degradation tracking

How fast your panels are fading.

What systems do we support?

Both read your own gateway, on your own network.

Trivial installation

Plug-and-play. Your mother-in-law could install.

  1. Plug it in
  2. Connect to wifi
  3. Watch your individual panel data come to life
No electricianNo rewiringNo hardware swap

The whole thing takes about 5 minutes to connect, and 15 minutes to see data.

Not sure which box you have? Email me — tony@watthacker.com

Questions, answered

Straight answers — especially the ones a burned SunPower owner deserves.

Still wondering something? Email me — or poke around the live demo.

Three ways to buy

30 days to change your mind — we refund your whole first order.

Kilowatt

The monitor. Free plan.

$50+ shipping

$50 monitor
$0 /yr service
plus shipping

No subscription.
  • Panel monitoring
  • Microinverter monitoring
  • Full system visibility
  • System alerts
  • Downloadable data
  • Data logs, 7 days
Start Kilowatt
Megawatt

The monitor. Full analysis.

$80today
$72/yr service
Free monitor ($50 value)
$8 shipping
Renews yearly ($72/yr), cancel anytime.
  • Kilowatt PLUS
  • Shade analyzer
  • Degradation tracking
  • True-up analyzer
  • Battery optimizer
  • Data logs, unlimited
Start Megawatt
Best value
Gigawatt

Pay once. Never again.

$199once

Free monitor
$199 service, for life
Free shipping

Enphase is $999 and a technician.
Same price to upgrade later. Buy now and the monitor and shipping are free.
  • Megawatt PLUS
  • Free monitor
  • Free shipping
  • 45-min home energy review with Tony
Buy Gigawatt
Works with the SunPower PVS6 No tools — just Wi-Fi 30-day money-back guarantee

Don’t wait for the true-up.

See your whole system live in 15 minutes.

30-day money-back guarantee.