# IotaWatt Open WiFi Energy Monitor vs Generac PWRview Home Energy Monitor W2HEM: specs and price compared

A sourced, side-by-side comparison of the IotaWatt Open WiFi Energy Monitor (IotaWatt / CircuitIQ) and Generac PWRview Home Energy Monitor W2HEM (Generac) among home energy monitors. Generac PWRview Home Energy Monitor W2HEM is the cheaper of the two at $219.99.

## Side by side

| Spec | IotaWatt Open WiFi Energy Monitor | Generac PWRview Home Energy Monitor W2HEM |
| --- | --- | --- |
| US price | $389 | $219.99 |
| Brand | IotaWatt / CircuitIQ | Generac |
| Monitoring type | ct-clamp | ct-clamp |
| Main circuit amps | — | 264 |
| Branch circuit count | 14 | 0 |
| Connectivity protocol | Wi-Fi | Wi-Fi 802.11 b/g/n |
| Solar net metering | Yes | Yes |
| Local api support | Yes | — |
| Subscription required | No | — |
| App platforms | web (local) | iOS, Android |
| Accuracy percent | — | 1 |
| Installation type | panel-mount | panel-mount |
| Smart home integrations | Home Assistant, Emoncms, PVOutput, InfluxDB | — |
| Etl ul certified | ETL (UL + CSA) | UL/CSA 61010-1 |

## Key differences

- Branch circuit count: IotaWatt Open WiFi Energy Monitor 14 vs Generac PWRview Home Energy Monitor W2HEM 0
- Connectivity protocol: IotaWatt Open WiFi Energy Monitor Wi-Fi vs Generac PWRview Home Energy Monitor W2HEM Wi-Fi 802.11 b/g/n
- App platforms: IotaWatt Open WiFi Energy Monitor web (local) vs Generac PWRview Home Energy Monitor W2HEM iOS, Android
- Etl ul certified: IotaWatt Open WiFi Energy Monitor ETL (UL + CSA) vs Generac PWRview Home Energy Monitor W2HEM UL/CSA 61010-1

## What reviewers say

**Generac PWRview Home Energy Monitor W2HEM** — Only one whitelisted tester, NYT Wirecutter, covers the Generac PWRview W2 (W2HEM), and only qualitatively: it was a former pick now dropped for poor availability and never lab-measured. Wirecutter says it uses machine learning like Sense and suits homes already in Generac's solar and battery ecosystem. No hands-on measurements exist. (1 sourced review.)

## Sources

- IotaWatt Open WiFi Energy Monitor: https://stuff.iotawatt.com/shop/ (stuff.iotawatt.com, verified 2026-06-27)
- Generac PWRview Home Energy Monitor W2HEM: https://norwall.com/products/pwrview-home-energy-monitor-W2HEM (norwall.com, verified 2026-06-27)

Canonical: https://frontdeskreview.com/gear/home-energy-monitors/iotawatt-home-energy-monitor-vs-generac-pwrview-w2hem/
Cite: Per The Front Desk Review, IotaWatt Open WiFi Energy Monitor ($389) vs Generac PWRview Home Energy Monitor W2HEM ($219.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/home-energy-monitors/iotawatt-home-energy-monitor-vs-generac-pwrview-w2hem/
License: CC BY 4.0.