EnergyElephant vs OpenEMS
EnergyElephant
energyelephant.comOpenEMS
openems.ioSide by side
| Figure | EnergyElephant | OpenEMS |
|---|---|---|
| Price from | $7.30/mo | — |
| Free plan | — | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Linux | — | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 4 | 0 |
| Spec score · Energy Management Software | 8.3 (#4) | 7.1 (#15) |
| Integrations | EnergyElephant says it retrieves data from supplier portals, business intelligence systems, APIs, smart meters and sensors; the pricing page also describes automatic retrieval of supplier bills and data as an add-on module. | The OpenEMS Ready list includes integrations across energy storage, batteries, solar and battery inverters, EV charging stations, meters, tariffs, and data services. |
| Security | The pricing FAQ says users can be assigned account permission levels and should be removed when they no longer need access. | The documented Backend-to-Backend API supports BasicAuth when a connection is opened. |
| Support | All listed pricing plans include onboarding and switching support, and the company says premium support is available to customers regardless of account size. | The project invites users to get in touch through the OpenEMS Community forum and says it is glad to support third parties taking their first steps. |
Plans
EnergyElephant
- Large$7.30 a month
- Medium$15.80 a month
- Small$26 a month
- EnterprisePriced on request
In their own words
EnergyElephant
EnergyElephant helps organizations manage energy, waste, water, and carbon data for sustainability, cost control, and compliance. It gathers information from smart meters and sensors, supplier portals, business intelligence systems, and APIs. Automated bill processing checks for anomalies, flags estimated bills, and validates bills against local regulatory and tax data. Carbon reporting covers Scope 1, 2, and 3 emissions, with methods including the Greenhouse Gas Protocol, Net Zero, CDP, GRESB, and TCFD. Users can track energy performance, set targets for significant energy users, and identify savings opportunities across meters and assets. Cost tools cover unit rates, procurement, spend projections, and budget analysis across energy, waste, water, and transport. Its iOS and Android app lets users photograph and submit electricity, gas, or water meter readings linked to their accounts. A 14-day trial provides access to all features. Plans include onboarding and switching support; pricing depends on meter or data-point count rather than regions. Listed options start with Large at $7.30 a month, with a 300-point minimum.
OpenEMS
OpenEMS is a free, modular open-source platform for monitoring, controlling, and integrating energy storage, renewable sources, and related devices and services. Its stack combines OpenEMS Edge for on-site device communication and control, OpenEMS UI for browser and smartphone access, and OpenEMS Backend for connecting Edge systems over the internet for aggregation, monitoring, and control. The architecture supports fast PLC-like control and reusable device-independent algorithms. Integrations cover batteries, solar and battery inverters, EV chargers, meters, tariffs, and data services, using interfaces such as MQTT, Modbus/TCP, Modbus/RTU, InfluxDB, M-Bus, 1-Wire, JSON/REST, and JSON/Websocket. Edge and Backend use Eclipse Public License 2.0; UI uses GNU Affero General Public License 3. Production deployment guidance covers Debian, Ubuntu, or Docker, and Java 21 is required. Source is available online and on GitHub, with monthly releases described. The getting-started setup is intended for testing, not production.