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ev.energy HEM Systems API

The HEM Systems API from ev.energy — 4 operation(s) for hem systems.

ev.energy HEM Systems API is one of 25 APIs that ev.energy publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include HEM Systems. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, a getting-started guide, authentication docs, and rate-limit docs.

This API exposes 4 operations across 4 paths, and defines 6 schemas. It is described by OpenAPI 3.2.0, at version 2.0.

Requests are made against 2 base URLs: https://api.ev.energy/v2, https://api-staging.ev.energy/v2.

4 operations 4 paths 6 schemas 4 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
2.0
Base URL
https://api.ev.energy/v2
Authentication
OAuth 2.0
Resource Areas
1

Authentication & Security 1

ev.energy HEM Systems API declares 1 security scheme for authenticating requests. It supports OAuth 2.0 (oauth2) using the clientCredentials and authorizationCode flows, exposing 35 scopes. By default, every request must be authenticated.

Paths & Operations 4

Across 4 paths, the API surfaces 4 operations — 4 GET. Each is listed below with its method, path, parameters, and response codes.

HEM Systems 4
GET
/hem_systems
List HEM systems
get-hem_systems 5 params → 200400401403406429
GET
/hem_systems/{hem_system_id}
Retrieve a HEM system
get-hem_systems-hem_system_id 2 params → 200400401403404406429
GET
/hem_systems/{hem_system_id}/energy_stats
Get aggregated energy statistics for a HEM system
get-hem_systems-hem_system_id-energy_stats 5 params → 200400401403404406429
GET
/hem_systems/{hem_system_id}/live_power
Get live power data for a HEM system
get-hem_systems-hem_system_id-live_power 2 params → 200400401403404406429

Schemas 6

The contract defines 6 schemas that model the data the API accepts and returns. The most detailed are HEMSystemEnergyStatsBucket (16 properties), HEMSystemLivePower (15 properties), Notification (13 properties), RFC9457ProblemDetail (6 properties). Each schema is shown below with its type and property counts.

RFC9457ProblemDetail
object
6 properties 2 required
Notification
object
Something that the user should be informed about.
13 properties 11 required
HEMSystem
object
A resource representing a Home Energy Management (HEM) system, which aggregates boundary meters, home batteries, and inverters.
3 properties 3 required
HEMSystemLivePower
object
Live power data for a HEM system, including raw measurements and derived power flows.
15 properties 15 required
HEMSystemEnergyStatsBucket
object
A single bucket of aggregated energy statistics for a HEM system.
16 properties 16 required
HEMSystemEnergyStatsResponse
object
Aggregated energy statistics response for a HEM system.
4 properties 4 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

ev-energy-hem-systems-api-openapi.yml Raw ↑

Other APIs ev.energy publishes across the network.

ev.energy Auth API
ev.energy Boundary Meters API
ev.energy Carbon API
ev.energy Charging Sessions API
ev.energy CT Clamps API
ev.energy EVS Es API
ev.energy Grid API
ev.energy Home Batteries API
ev.energy Notifications API
ev.energy Programs API
ev.energy Rebates API
ev.energy Reference Data API
Where this information came from

This is an independent, third-party profile of ev.energy HEM Systems API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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