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20 Best Email MCP Servers: compared and ranked, September 2026Ranked from 2,238 matching servers on stars, growth, downloads and maintenance. Updated .

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    maintenance
    A physics engine for liquid-cooled GPU systems, exposed as an AI-callable MCP server. Enables thermal analysis, coolant comparison, flow optimization, and rack-level sizing via natural language queries.
    1
    MIT
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    license
    A
    quality
    B
    maintenance
    An unofficial read-only MCP server for Panasonic AiSEG2 home energy management controllers, enabling clients to read live power flow, per-circuit consumption, circuit names, daily totals, and historical energy/cost data from the device's local web interface.
    6
    MIT
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    license
    A
    quality
    C
    maintenance
    An MCP server for US electricity demand and weather data that provides tools, resources, and prompts to query hourly demand, daily demand, peak demand, and demand vs temperature across regions, all running locally with a bundled SQLite database.
    6
    MIT
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    license
    A
    quality
    B
    maintenance
    An MCP server that extracts energy-usage charts from utility-bill PDFs, returning structured time-series data and annotated images.
    1
    AGPL 3.0
  • F
    license
    A
    quality
    C
    maintenance
    An MCP server that exposes the U.S. Energy Information Administration (EIA) Open Data API, enabling LLMs to browse and query energy data across 17 datasets with generic, composable tools.
    4
    -
  • F
    license
    A
    quality
    D
    maintenance
    An MCP server that provides access to Northwood Capital Partners' portfolio carbon data, enabling MCP-compatible agents to query emissions, analyze decarbonization gaps, and simulate reduction initiatives through natural language.
    5
    -
  • F
    license
    A
    quality
    B
    maintenance
    Enables AI agents to query live solar telemetry from public SolarNetwork sites, detect dated equipment faults with peer-relative analysis, and generate printable PDF service reports for field technicians.
    10
    2
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    license
    A
    quality
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    maintenance
    Enables Claude to size batteries, wire gauges, and fuses for 12V-48V electrical systems in boats, vans, and off-grid builds, and generates complete wiring diagrams as SVG or PNG.
    9
    34
    MIT
  • A
    license
    A
    quality
    C
    maintenance
    Connects Claude and other MCP clients to myGEKKO building controllers via the official Query API, enabling natural-language queries and control of smart-home devices. It is read-only by default, with write actions available only through explicit opt-in and safety policies.
    3
    MIT
  • A
    license
    A
    quality
    D
    maintenance
    MCP server for Danish electricity prices, providing current spot price, cheapest hours, and 7-day forecast for DK1 and DK2 areas.
    5
    12
    MIT
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    license
    A
    quality
    A
    maintenance
    Description: Data-center, power & gas intelligence MCP server. 33 tools covering 21,000+ data-center facilities (170+ countries), 232 US power markets scored by the DC Hub Power Index (DCPI), 2,000+ tracked M\&A deals, ISO grid telemetry (PJM, ERCOT, CAISO, MISO, SPP, NYISO), fiber routes, energy pricing. License: Free to cite (CC-BY-4.0). Existing distribution: In the official MCP registry; indexe
    83
    2
    MIT
  • A
    license
    A
    quality
    A
    maintenance
    Governed, read-only OT data tap for substation and utility telecontrol — IEC 60870-5-104, DNP3/IEEE 1815, and IEC 61850 MMS connectors with cross-protocol asset discovery, alarm and downtime RCA, unbypassable audit logging (MCP + CLI), budget/runaway guards, and an airgap no-egress mode. Energy edition of Industrial-AIOps, built on iaiops.core.
    59
    1
    MIT
  • A
    license
    A
    quality
    D
    maintenance
    An unofficial MCP (Model Context Protocol) server that exposes a Vaillant heat pump's data to AI assistants like Claude. Query outdoor and room temperatures, hot water status, energy consumption, COP estimates, schedules, and diagnostics through natural conversation.
    4
    MIT
  • A
    license
    A
    quality
    D
    maintenance
    Solar estimates, provider comparison, energy prices and blog for Italy. 6 MCP tools for the Italian solar market.
    6
    27
    MIT
  • A
    license
    C
    quality
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    maintenance
    An MCP server that enables natural language interaction with the MeteoControl VCOM API v2 for monitoring solar array installations. It allows users to retrieve real-time and historical energy data, system alerts, and detailed asset configuration metrics.
    4
    Apache 2.0