Energy & Utilities · head to head
Wattwatchers EMS vs HOMER Energy
Wattwatchers EMS
Energy & Utilities
Smart building energy management system
- From
- On request
- Rated
- -
HOMER Energy
Energy & Utilities
Microgrid and distributed energy optimization software
- From
- Free
- Rated
- -
The short version
- Only HOMER Energy has a free tier, so it costs nothing to try first.
- Each has a real cost: Wattwatchers EMS requires hardware installation at each monitoring point, increasing total cost of ownership; HOMER Energy now owned by UL Solutions rather than being independent
- They diverge on capability: Wattwatchers EMS covers Real-time monitoring, HOMER Energy covers Microgrid optimization.
Where they differ
Only the attributes on which Wattwatchers EMS and HOMER Energy actually diverge.
| Attribute | Wattwatchers EMS | HOMER Energy |
|---|---|---|
| Starting price | On request | Free |
| Pricing model | Unknown | subscription |
| Free tier | No | Yes |
| Platforms | Web, iOS, Android, Cloud | Windows, Web |
| Founded | 2007 | 2009 |
Identical on both: user rating (Not yet rated), category (Energy & Utilities).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Wattwatchers EMS
- Real-time monitoring
- Energy analytics
- Smart recommendations
- Alert system
- Mobile app
- Home Assistant
- Google Home
- SSL encryption
Only in HOMER Energy
- Microgrid optimization
- Techno-economic analysis
- Component library
- Sensitivity analysis
- Energy storage sizing
- Renewable integration
- Load profile analysis
- Financial modeling
Both cover
- Cloud deployment
- Web support
- English language support
What people use each for
The jobs each tool is most often brought in to do.
Wattwatchers EMS
- Energy optimizationnot HOMER Energy
- Cost reductionnot HOMER Energy
HOMER Energy
- Sizing and optimising off-grid and microgrid systemsnot Wattwatchers EMS
- Modelling the economics of solar, wind and battery combinationsnot Wattwatchers EMS
- Electric bill optimisation for grid-connected sites and EV chargingnot Wattwatchers EMS
- Utility-scale storage investment analysisnot Wattwatchers EMS
- Comparing least-cost configurations against load and resource datanot Wattwatchers EMS
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Wattwatchers EMS
- Requires hardware installation at each monitoring point, increasing total cost of ownership
- Built for small to medium portfolios; scaling to large portfolios may present usability challenges
- Limited to energy monitoring; not a comprehensive building management system
HOMER Energy
- Now owned by UL Solutions rather than being independent
- Split into three separate products, HOMER Pro for off-grid and microgrids, HOMER Grid for bill optimisation and HOMER Front for utility-scale, so the right one depends on project type
- Pricing is not shown on the product pages
Pricing, plan by plan
Wattwatchers EMS
On requestNo published plan breakdown. See the Wattwatchers EMS review.
HOMER Energy
Free- HOMER GridFree
- Grid-connected optimization
- Basic components
- Limited simulations
- HOMER Pro$1500/year
- Advanced optimization
- All components
- Unlimited simulations
- Enterprise$undefined/year
- Multi-user licenses
- API access
- Custom modules
Which should you pick?
Choose Wattwatchers EMS if
- You need real-time monitoring.
- You work on Web, iOS, Android, Cloud.
- You also want energy analytics.
Choose HOMER Energy if
- You need microgrid optimization.
- You want to start without paying.
- You work on Windows, Web.
- You also want techno-economic analysis.
Questions people ask
- Is Wattwatchers EMS or HOMER Energy better?
- Neither clearly leads. Wattwatchers EMS starts at On request and HOMER Energy at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Wattwatchers EMS or HOMER Energy?
- HOMER Energy has a free tier; the other does not. Paid plans start at On request for Wattwatchers EMS and Free for HOMER Energy.
- Does Wattwatchers EMS or HOMER Energy run on more platforms?
- Wattwatchers EMS runs on Web, iOS, Android, Cloud. HOMER Energy runs on Windows, Web.
- Can I use HOMER Energy for free?
- Yes. HOMER Energy has a free tier, so you can try it without paying. Wattwatchers EMS starts at On request.
- What is Wattwatchers EMS best used for?
- Wattwatchers EMS is most often used for energy optimization, cost reduction. Of those, energy optimization and cost reduction are not what HOMER Energy is typically brought in for.
- What can Wattwatchers EMS do that HOMER Energy cannot?
- Wattwatchers EMS covers Real-time monitoring, Energy analytics, Smart recommendations, Alert system. HOMER Energy covers Microgrid optimization, Techno-economic analysis, Component library, Sensitivity analysis. Both handle Cloud deployment, Web support, English language support.
Answered from the vendors’ own pages
Wattwatchers EMS: What data does Wattwatchers monitor?
Wattwatchers measures consumption at the device or circuit level in real-time, identifies equipment inefficiencies, and streams data through cloud dashboards for detailed energy consumption pattern analysis.
SourceWattwatchers EMS: What web-based tools does Wattwatchers provide?
Wattwatchers provides Fleet Management for fleet overview and device health, an Onboarding tool for smartphone-based device configuration, and a Dashboard for customers to view sites and data.
SourceWattwatchers EMS: What is the mydata.energy app?
mydata.energy is Wattwatchers' mobile application available on iPhone and Android that provides real-time energy management and monitoring for homes and small businesses.
SourceWattwatchers EMS: How does ADEPT help with energy management?
ADEPT is Wattwatchers' agile development platform for distributed energy that enables fleet analytics, real-time performance analysis, and zero-code prototyping of custom analytics rules.
Source