> For the complete documentation index, see [llms.txt](https://renewables.docs.helinplatform.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://renewables.docs.helinplatform.com/readme.md).

# Smart Grid Manager Documentation

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The Helin Smart Grid Manager (SGM) is a middleware platform that connects your on-site energy assets, solar inverters, battery systems, EV chargers, to your asset and energy management systems. It sits between your hardware and your upstream systems, translating commands into real-time control actions and streaming telemetry back to wherever you need it.<br>

<a href="/sgm-product-docs/concepts/what-is-sgm.md" class="button primary">What is SGM</a><a href="https://renewables.docs.helinplatform.com/sgm-product-docs/" class="button secondary">Product docs -></a><a href="https://renewables.docs.helinplatform.com/api-reference/" class="button secondary">API reference -></a>
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<table data-view="cards"><thead><tr><th></th><th></th></tr></thead><tbody><tr><td><p><i class="fa-book-open">:book-open:</i></p><h4>Key concepts</h4></td><td><p><a href="/sgm-product-docs/concepts/what-is-sgm.md">What is SGM</a></p><p><a href="/sgm-product-docs/concepts/how-sgm-works.md">How SGM works</a></p><p><a href="/sgm-product-docs/concepts/energy-concepts.md">Energy concepts</a></p></td></tr><tr><td><p><i class="fa-compass">:compass:</i></p><h4>Control modes</h4></td><td><p><a href="/sgm-product-docs/reference-docs/asset-control.md">Asset Control</a></p><p><a href="/sgm-product-docs/reference-docs/site-control.md">Site Control</a></p><p><a href="/sgm-product-docs/reference-docs/scheduling-setpoints.md">Scheduling setpoints</a></p></td></tr><tr><td><p><i class="fa-square-code">:square-code:</i></p><h4>For developers</h4></td><td><p><a href="https://renewables.docs.helinplatform.com/api-reference/">API reference</a></p><p><a href="https://app.gitbook.com/s/x327p9qmgvN6jAxpSI6V/curtailment">Curtailment</a></p><p><a href="/api-reference/schedules.md">Schedules</a></p></td></tr><tr><td><p><i class="fa-screwdriver-wrench">:screwdriver-wrench:</i></p><h4>For deployment</h4></td><td><p><a href="/sgm-product-docs/guides/configuration-examples.md">Configuration examples</a></p><p><a href="/sgm-product-docs/reference-docs/supported-assets.md">Supported assets</a></p><p><a href="/sgm-product-docs/reference-docs/sgm-hardware.md">SGM hardware</a></p></td></tr></tbody></table>

***

## Documentation made for every team

<table data-view="cards"><thead><tr><th></th><th></th></tr></thead><tbody><tr><td><h4>Developers</h4></td><td>Build and automate on top of SGM. Use the <a href="https://renewables.docs.helinplatform.com/api-reference/">POLARIS Curtailment API</a> to <a href="https://app.gitbook.com/s/x327p9qmgvN6jAxpSI6V/curtailment">curtail</a> categories of devices on a site and submit <a href="/api-reference/schedules.md">day-ahead schedules</a>.</td></tr><tr><td><h4>Operators</h4></td><td>Deploy and monitor SGM across your portfolio. Start with <a href="/sgm-product-docs/concepts/how-sgm-works.md">how SGM works</a>, then check the <a href="/sgm-product-docs/guides/configuration-examples.md">configuration examples</a> to find a layout that matches your site.</td></tr><tr><td><h4>Asset owners</h4></td><td>Understand how SGM keeps your site within its <a href="/sgm-product-docs/concepts/energy-concepts.md">grid limits</a>, how <a href="/sgm-product-docs/reference-docs/site-control.md">battery strategies</a> protect your CBC and SDE caps, and how to <a href="/sgm-product-docs/reference-docs/scheduling-setpoints.md">schedule</a> day-ahead trading.</td></tr></tbody></table>

***

## What teams use SGM for

<table data-view="cards"><thead><tr><th></th><th></th></tr></thead><tbody><tr><td><h4>Grid balancing &#x26; capacity management</h4></td><td>Stay inside your grid-connection capacity, CBC contract, and SDE feed-in caps in real time. <a href="/sgm-product-docs/concepts/closed-loop-control.md">Closed Loop Control</a> handles the per-second adjustments automatically.</td></tr><tr><td><h4>Day-ahead trading on EPEX</h4></td><td>Submit a 24-hour curtailment and dispatch <a href="/sgm-product-docs/reference-docs/scheduling-setpoints.md">schedule</a> the evening before. Gateways execute it autonomously even if your system loses connectivity overnight.</td></tr><tr><td><h4>Asset protection &#x26; fault recovery</h4></td><td>The watchdog reverts assets to safe defaults when communication drops. The <a href="/sgm-product-docs/concepts/cyclic-writer.md">cyclic writer</a> defends against device memory loss after power cycles.</td></tr><tr><td><h4>Renewable + storage + EV integration</h4></td><td>Coordinate solar, wind, batteries and EV chargers on one site under <a href="/sgm-product-docs/reference-docs/site-control.md">Site Control</a>, including BESS strategies for limited-grid sites.</td></tr><tr><td><h4>Demand response &#x26; virtual power plants</h4></td><td>Aggregate flexible assets across your portfolio. One API token, one schedule, every site responds together.</td></tr><tr><td><h4>Compliance with grid operator constraints</h4></td><td>Pre-load CBC curtailment windows or SDE limits at the start of each week, gateways execute them reliably regardless of upstream system state.</td></tr></tbody></table>


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