What it is
SKM Power*Tools is electrical engineering software for analyzing power systems. Its study modules cover fault calculations, load flow, coordination, arc-flash evaluation, motor starting, transient simulation, reliability, harmonics, grounding and cable pulling. The Arc Flash Evaluation module calculates incident energy and the arc-flash boundary at each location. DAPPER offers a one-line interface with fault analysis, load flow, demand load, cable and transformer sizing, and panel schedules. Data Exchange supports tab-delimited, CSV and SKM XML formats, with interfaces for Autodesk Revit and Intergraph SmartPlant Electrical. PTW is desktop software for Windows. SKM Mobile is available for iOS and Android, where engineers can collect field data, review study results and share projects. Transferring projects between mobile and desktop requires a MySKM Cloud subscription; cloud project data is permanently deleted if the subscription is not renewed. SKM lists a paid model and offers DAPPER licenses at different bus capacities, as well as annual mobile and cloud plans.
Who it suits. It suits electrical engineers designing or analyzing power distribution systems, including those working in commercial, industrial, institutional, utility and petrochemical facilities. Mobile project exchange with PTW requires a MySKM Cloud subscription.
Good
- Arc-flash module calculates incident energy and boundaries.
- DAPPER includes fault analysis and load flow.
- Data Exchange interfaces with Revit and SmartPlant Electrical.
- Mobile app supports field data and study reviews.
- PTW follows listed IEEE practices and UL 489.
Watch for
- No free plan is listed.
- Mobile desktop exchange requires a MySKM Cloud subscription.
- Cloud project data is deleted if renewal is missed.
- Windows desktop requirements include dual monitors.
Verdict
Power*Tools combines power-system study modules with DAPPER analysis and mobile field workflows. Check the cloud subscription requirements and renewal terms if you need to transfer projects between mobile and desktop.
Plans and prices
| Plan | Price | Billed |
|---|---|---|
| SKM Mobile App iOS/Android | $299 a year | $299/yr |
| MySKM Cloud Subscription | $1,500 a year | $1500/yr |
| DAPPER 50 Bus | $2,450 once | — |
| DAPPER 100 Bus | $4,670 once | — |
| DAPPER 300 Bus | $5,890 once | — |
| DAPPER 1000 Bus | $8,570 once | — |
| DAPPER 2000 Bus | $11,050 once | — |
| DAPPER 5000 Bus | $17,160 once | — |
From SKM Power*Tools's own pricing page, checked 2 Oct 2026. Every plan
What the maker publishes
- Arc flash
- The Arc Flash Evaluation module calculates incident energy and the arc-flash boundary for each location. source
- Arc flash
- Arc Flash Evaluation calculates incident energy and arc flash boundaries for locations in a power system. source
- Cloud access limit
- Without a MySKM Cloud subscription, mobile users can create and modify app projects but cannot upload them for use in PTW or download PTW desktop projects into the app. source
- Cloud limits
- Full SKM Mobile functionality requires a MySKM Cloud subscription; without it, users cannot exchange projects with PTW desktop, and cloud project data is permanently deleted if annual renewal is missed. source
- Cloud retention
- Project data uploaded to MySKM Cloud is permanently deleted if the subscription is not renewed. source
- Cloud security
- Each cloud project has a security interface for adding users and controlling permissions. source
- Cloud security controls
- MySKM Cloud project security lets users assign permissions for read-only or read-write downloads, administration, and deletion. source
- Cloud workflow
- Mobile projects can be uploaded to MySKM Cloud for import into PTW desktop, and PTW desktop projects can be uploaded for use in the mobile app. source
- DAPPER
- DAPPER provides a one-line interface, comprehensive library, fault analysis, load flow, demand load, cable and transformer sizing, and panel schedules. source
- Data exchange
- The Data Exchange module supports tab-delimited, CSV, and SKM XML formats and provides interfaces for Autodesk Revit and Intergraph SmartPlant Electrical. source
- Download access
- Software downloads are accessed through MySKM using credentials associated with a license, and the help desk instructs users to contact SKM if they need an account linked to their license. source
- Downloads
- Software downloads are restricted to a My SKM account where users view licenses and available downloads. source
- Fault analysis
- The A_Fault module performs fault calculations in compliance with ANSI C37 standards. source
- Founded
- 1972 source
- Headquarters
- Zephyr Cove, Nevada, USA source
- Integrations
- The Data Exchange module supports tab-delimited, CSV and SKM XML formats and interfaces with Autodesk Revit and Intergraph SmartPlant Electrical. source
- Intended industries
- SKM says its software is used in commercial, light and heavy industrial, institutional, utility, and petrochemical facilities worldwide. source
- Mobile platforms
- SKM Mobile is available for iOS and Android devices and lets engineers collect field data, review study results and share projects. source