# Refoss EM16P Smart Energy Monitor vs Generac PWRview Home Energy Monitor W2HEM: specs and price compared

A sourced, side-by-side comparison of the Refoss EM16P Smart Energy Monitor (Refoss) and Generac PWRview Home Energy Monitor W2HEM (Generac) among home energy monitors. Refoss EM16P Smart Energy Monitor is the cheaper of the two at $199.99.

## Side by side

| Spec | Refoss EM16P Smart Energy Monitor | Generac PWRview Home Energy Monitor W2HEM |
| --- | --- | --- |
| US price | $199.99 | $219.99 |
| Brand | Refoss | Generac |
| Monitoring type | ct-clamp | ct-clamp |
| Main circuit amps | 200 | 264 |
| Branch circuit count | 16 | 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 UI (local), cloud optional | iOS, Android |
| Accuracy percent | 2 | 1 |
| Installation type | panel-mount | panel-mount |
| Smart home integrations | Home Assistant (native), MQTT | — |
| Etl ul certified | ETL (UL 61010) | UL/CSA 61010-1 |

## Key differences

- Main circuit amps: Refoss EM16P Smart Energy Monitor 200 vs Generac PWRview Home Energy Monitor W2HEM 264
- Branch circuit count: Refoss EM16P Smart Energy Monitor 16 vs Generac PWRview Home Energy Monitor W2HEM 0
- Connectivity protocol: Refoss EM16P Smart Energy Monitor Wi-Fi vs Generac PWRview Home Energy Monitor W2HEM Wi-Fi 802.11 b/g/n
- App platforms: Refoss EM16P Smart Energy Monitor web UI (local), cloud optional vs Generac PWRview Home Energy Monitor W2HEM iOS, Android
- Accuracy percent: Refoss EM16P Smart Energy Monitor 2 vs Generac PWRview Home Energy Monitor W2HEM 1
- Etl ul certified: Refoss EM16P Smart Energy Monitor ETL (UL 61010) 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

- Refoss EM16P Smart Energy Monitor: https://refoss.net/collections/refoss-open-platform/products/smart-energy-monitor-em16p (refoss.net, 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/refoss-em16p-vs-generac-pwrview-w2hem/
Cite: Per The Front Desk Review, Refoss EM16P Smart Energy Monitor ($199.99) vs Generac PWRview Home Energy Monitor W2HEM ($219.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/home-energy-monitors/refoss-em16p-vs-generac-pwrview-w2hem/
License: CC BY 4.0.