Refoss
Refoss EM16P Smart Energy Monitor
$199.99Cheaper
Best Home Energy Monitors · head-to-head
Refoss EM16P Smart Energy Monitor vs Generac PWRview Home Energy Monitor W2HEM
A sourced, side-by-side comparison. Refoss EM16P Smart Energy Monitor is cheaper at $199.99. Every spec and price links to its source.
Generac
Generac PWRview Home Energy Monitor W2HEM
$219.99
Which is better: the Refoss EM16P Smart Energy Monitor or Generac PWRview Home Energy Monitor W2HEM?
On the specs we track, they're closely matched. The Refoss EM16P Smart Energy Monitor is the cheaper at $199.99.
Check Refoss EM16P Smart Energy Monitor price See Generac PWRview Home Energy Monitor W2HEM on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Refoss EM16P Smart Energy Monitor | Generac PWRview Home Energy Monitor W2HEM |
|---|---|---|
| US price | $199.99 | $219.99 |
| Brand | Refoss | Generac |
| Released | — | — |
| 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 |
Sources — Refoss EM16P Smart Energy Monitor: refoss.net (verified 2026-06-27). Generac PWRview Home Energy Monitor W2HEM: norwall.com (verified 2026-06-27).
What's the difference between the Refoss EM16P Smart Energy Monitor and Generac PWRview Home Energy Monitor W2HEM?
Where the two actually differ on the specs we track (6 of 12). Matching specs are omitted.
- 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
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Refoss EM16P Smart Energy Monitor
No sourced tester review yet.
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.)
Praised: Uses machine learning to identify where the home draws power, similar to Sense; Optimized to integrate with Generac solar panels and storage batteries; worth considering for existing Generac-ecosystem owners.
Flagged: Hard to find / limited availability; removed from Wirecutter's picks and no longer listed on Generac's site.