# Voltus

**Canonical:** https://apis.io/providers/voltus/  
**Website:** https://www.voltus.co/  
**APIs profiled:** 5

Voltus is a United States virtual power plant (VPP) operator and distributed energy resource (DER) technology platform, headquartered in San Francisco, California, that aggregates commercial, industrial, residential and transportation loads and batteries into wholesale electricity markets across all of North America's organized markets (AESO, CAISO, ERCOT, IESO, ISO-NE, MISO, NYISO, PJM, SPP). It sits in the demand-response and flexibility layer of the energy value chain: it is not a utility and not a metering data holder, so no Green Button, Consumer Data Right or smart-meter data mandate applies to it — mandate regime is honestly none. Its API posture is unusually good for the sector and unusually split. Voltus runs a genuine public developer portal at api.voltus.co/docs (Docusaurus, no login) with concepts, tutorials, an OpenAPI-generated reference and a changelog, plus a fully anonymous sandbox at sandbox.voltus.co that answers real HTTP requests with the documented public key "X-Voltus-API-Key: secret" — a developer can call it before signing anything. Production, however, is partner-only: api.voltus.co/2022-04-15 returns 401 Permission denied to the sandbox key, and real access requires a commercial partnership plus a signed Letter of Authorization per site. Site telemetry and dispatch control are exposed to partners over that account-scoped REST API and over OpenADR 2.0a Simple HTTP PULL with mutual TLS; Voltus publishes no open grid or market data of its own, so consumer/site energy data is available under contract while market data is closed. No downloadable OpenAPI or Swagger document is served — /openapi.json, /swagger.json and /openapi3.yaml all 404 — but the portal is built with the Docusaurus OpenAPI plugin, and the real operation objects (parameters, request bodies, response schemas, examples) were recovered verbatim from the published build and assembled into openapi/voltus-openapi.yml: 10 operations across 8 paths.

## Kin Score — 50.9 / 100 (developing)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 50.9).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 65.7 |
| Governance | 20.8 |
| Operational Transparency | 57.9 |
| Developer Ergonomics | 62.5 |
| Commercial Clarity | 34.2 |

Regulatory layer — **Energy & Utilities**: 33.8 (matched via tags).

## Agent readiness — 49.8 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| MCP Server | derived |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## APIs (5)

- **Voltus Dispatches API** — Grid dispatch events for enrolled sites — list dispatches, retrieve a single dispatch by ID, and create a test dispatch. Documented operations are GET /dispatches ("Returns a li...
- **Voltus Sites API** — Read the sites (facilities) enrolled with Voltus under the calling account, with their meters. The single documented operation is GET /sites ("Returns a list of your sites."), r...
- **Voltus Telemetry API** — Submit and retrieve interval energy telemetry for enrolled sites. Documented operations are POST /telemetry, POST /telemetry/controllable-load ("Posts controllable load.") and G...
- **Voltus Webhooks API** — Register HTTP callbacks so Voltus can push dispatch notifications instead of the partner polling. Documented operations are GET /webhooks ("Returns a list of all webhooks that h...
- **Voltus OpenADR 2.0a VTN** — Standards-based alternative to the REST dispatch integration. Voltus states it "supports OpenADR2.0a via Simple HTTP (PULL)" and that "Voltus provides a VTN, and our partners ru...

## MCP servers (1)

- **voltus-mcp.yml**

## Agentic access (1)

- **Voltus Agentic Access** — 10 operations · 5 acting · 2 human-in-the-loop

## Security (2)

- **Voltus Authentication** — apiKey/mutualTLS · 2 schemes
- **Voltus Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Energy, United States, Electricity, Demand Response, Virtual Power Plant, DER, Grid, Energy Markets, Flexibility, Energy Storage, OpenADR, Telemetry

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/voltus/). Scores are computed from the provider's own public artifacts under a published rubric.