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Sentinel

Free · No subscription · Forever

Your GivEnergy system shouldn’t disappear
with the company that made it.

Free monitoring. Engineer-on-call.

GivEnergy went into administration on 9 April 2026. Sentinel keeps your inverter visible, watches it for faults, and connects you to the engineers at Solar Tech Support when something needs fixing.

Install Sentinel Open dashboard
  • Works with every GivEnergy hybrid · AC · AIO · 3-phase
  • Local-first — your data lives on your network
  • Built by the team behind Solar Tech Support
How it works

Four steps. Fifteen minutes. Then it just stays on watch.

  1. Install

    Run the free agent

    Tiny binary on any PC you leave on, or a £75 Raspberry Pi kit from The Pi Hut. Pre-built image — flash, plug in, done.

    About 15 minutes · no command line

  2. Pair

    Connect it to sentinelapp.solar

    Open the dashboard, enter the one-time code shown by the agent. Encrypted outbound connection only — nothing to forward on your router.

    About 30 seconds

  3. Watch

    See your system, live

    Power flow, battery, solar, grid, history — in your browser. Mobile-friendly. Free forever on Watch, with self-serve control on £1/mo Guard.

    From the moment it pairs

  4. Stand guard

    Sentinel watches for faults

    Email alerts the moment we spot trouble. If something needs fixing, an STS engineer rings you with the diagnosis already in hand.

    Ongoing · zero effort from you

App pricing

Free to monitor. £1/mo to control your own system.

Two tiers. No contract. No surprises. Engineer help is a separate menu — see below.

Watch

£0Free forever · read-only

Install the agent, see your system live in real time, and get email alerts when Sentinel spots a fault. No historical graphs, no settings changes on this tier — but it's free, forever.

  • Local agent on your PC or Pi
  • Live dashboard — real-time power flow
  • Email alerts when faults are detected
  • Today's data, in-memory only (resets when idle)

Guard

£1per month · self-serve control + 12-month historical graphs

Everything in Watch, plus full historical graphs (12 months of stored data), self-serve settings changes — charge slots, target SoC, modes — from anywhere on any device. Cancel anytime.

  • Everything in Watch
  • Historical graphs — 12 months of data
  • Self-serve settings (charge slots, target SoC, modes, export limit)
  • Mobile-friendly dashboard from anywhere
  • Faster polling — 5-second refresh
Engineer services · via Solar Tech Support

Need a human? STS engineers handle the fix.

The Sentinel app spots faults; the engineering happens on the other side of the family. Same UK team, billed per task. No subscription required.

Settings change

£25 per request · engineer does it

Don't want a subscription? Or want help with a tricky tariff? Ask an engineer to make the change for you. Takes minutes; you get a confirmation note.

Book with STS →

Remote diagnostic

£75 per fault · written summary · matches STS

Engineer logs in remotely, investigates the fault — Sentinel-spotted or customer-reported — and writes you a plain-English summary with the recommended fix. No site visit needed.

View on STS →

On-site repair

From £245 minimum visit fee · parts and labour quoted separately · via STS

Actual repair work, quoted by Solar Tech Support using their existing pricing. Sentinel is the lead source; STS does the engineering.

See STS services →
FAQ

Common questions

No. Sentinel is built and run by RVTC LTD (Solar Tech Support's parent company) for customers left without manufacturer support after the April 2026 administration. We talk to your inverter using its existing local network connection — no GivEnergy cloud account required.
The local dashboard and fault detection run on your network even if your internet drops. The cloud features (alerts, the £1/mo dashboard from anywhere, remote help from STS engineers) need internet, but the agent itself just watches your inverter regardless.
Yes, on the £1/mo Guard tier — you get full self-serve control of charge slots, target SoC, modes, the lot. On the free Watch tier the agent is read-only by default. If you'd rather an engineer made a change for you it's £25 per request.
Sentinel reads your inverter every few seconds via its existing local Modbus interface and watches for things customers usually only notice once they hurt — battery not charging when it should, error codes, voltage excursions, slow degradation over months, known-buggy firmware. If we see one, you get an email and our engineers see it in the triage queue. We tend to ring you with a diagnosis before you ring us.
Any PC you leave on most of the time works fine. For always-on monitoring (recommended if you care about overnight fault catching or Octopus Agile schedules) buy a Raspberry Pi 5 kit from The Pi Hut for around £75 and flash our SD-card image — about 15 minutes, no command line.
Install Sentinel today

Free download. Five-minute setup. No card needed.

Install the agent, pair it from sentinelapp.solar, and your system goes on watch. We'll let you know when something needs attention.

  • No GivEnergy cloud account required
  • Read-only by default — full control is your call
  • Works behind any home router
  • Backed by Solar Tech Support engineers