# Microgrid renewable-surplus absorption request Canonical URL: https://eloragrid.ai/symbols/microgrid-renewable-surplus-absorption-request Publisher: Elora Grid Updated: 2026-11-03 Lookup label: MRAR Drawing use: Schematic Reference families: Manufacturer Representation: Functional block Installation focus: microgrids Input: Renewable surplus and absorption limits Output: Absorption request Requests compatible storage or controllable-load absorption for the assigned renewable surplus. ## In plain English ### What this block does Requests compatible storage or controllable-load absorption for the assigned renewable surplus. ### A simple example In a microgrid with solar generation, the controller can restrain inverter output when local load and storage cannot absorb the available power. The resource controller reports its own availability and accepted operating limits. For this reference, the drawing identifies “Renewable surplus and absorption limits” at the input and “Absorption request” at the output. Available charging capacity can be energy-constrained. ### What the drawings help you do Start at the named input: Renewable surplus and absorption limits. Identify its source device or document and the state represented on the drawing. Follow the named output: Absorption request. Cross-reference its destination and separate the command from confirmation that the equipment responded. ### Terms - Input: Renewable surplus and absorption limits - Output: Absorption request - Application reference: An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections. Concept diagram: Renewable surplus and absorption limits → MRAR → Absorption request A reading guide. The entry's original illustration and input/output facts describe this application. - [Microgrid processing and control functions](https://productinfo.se.com/esxp_digital_apps_iec/mg/English/BM_ESXP_DG_Microgrid_IEC_0001122076.xml/%24/ESXP_DG_MG_SD_Processing_0001125595) ## What it represents Requests compatible storage or controllable-load absorption for the assigned renewable surplus. Renewable-generation coordination connects variable resource availability, inverter operating limits and the microgrid power target. Available solar or wind power, an issued curtailment request and actual delivered power are different signals. In a microgrid with solar generation, the controller can restrain inverter output when local load and storage cannot absorb the available power. The resource controller reports its own availability and accepted operating limits. For this reference, the drawing identifies “Renewable surplus and absorption limits” at the input and “Absorption request” at the output. Available charging capacity can be energy-constrained. Identify the point where power is measured and the system declaring each availability or limit signal. Resource forecasts and controller requests do not guarantee the delivered generation at every instant. The functional block is an independent explanation of this named application. Equipment-specific ratings, terminal connections and operating conditions must be established in the project documentation. ## How to read it - Start at the named input: Renewable surplus and absorption limits. Identify its source device or document and the state represented on the drawing. - Follow the named output: Absorption request. Cross-reference its destination and separate the command from confirmation that the equipment responded. - Available charging capacity can be energy-constrained. - Identify the point where power is measured and the system declaring each availability or limit signal. Resource forecasts and controller requests do not guarantee the delivered generation at every instant. ## Information to show or reference - Label the source and connection reference for renewable surplus and absorption limits. - Identify the destination and defined state of absorption request. - Record the equipment or control-document revision supporting this functional block. - Check this application limit in the project design: Available charging capacity can be energy-constrained. ## Important distinction Available charging capacity can be energy-constrained. This reference describes the named application; it does not establish a new IEC graphical symbol, an ANSI device-function number or an exact manufacturer connection diagram. ## Facts - Representation: Functional block - Installation focus: Microgrids - Input / boundary: Renewable surplus and absorption limits - Output / connection: Absorption request - Lookup label: MRAR is a library lookup label, not a standard device designation. ## Public references - [Microgrid processing and control functions](https://productinfo.se.com/esxp_digital_apps_iec/mg/English/BM_ESXP_DG_Microgrid_IEC_0001122076.xml/%24/ESXP_DG_MG_SD_Processing_0001125595) — Schneider Electric. Public technical context for microgrid renewable-generation interfaces. Renewable generation dispatch and microgrid source coordination. The application text and educational graphic are independently authored; the publisher does not certify this representation. ## Graphic scope Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.