Questions, answered plainly.

Which inverter brands does Helios support?

Helios is fully verified with Huawei FusionSolar and SolarEdge. Integrations are also built for Sungrow, Fronius, Azzurro, SMA, GoodWe, Growatt and SolaX — these are real integrations that are validated against your equipment when your first system of that brand connects.

How often does the data update?

Inverter cloud APIs are polled every five minutes, which is what vendor rate limits reasonably allow. On sites fitted with an optional Helios edge gateway, readings are pushed every 30 to 120 seconds instead.

Do I need to install extra hardware?

No. Helios works through the inverter manufacturer's cloud API with no hardware on site. An optional Helios edge gateway gives faster data and enables control, and the Helios Edge EMS is a separate product for autonomous battery control.

Can I control inverters and batteries from Helios?

It depends on how the site is connected. Cloud-API-only sites are monitoring only, by design. Sites with a Helios smart edge gateway support real control including power limiting, on/off, restart and battery mode, schedule, minimum state-of-charge and forced charge or discharge — Huawei is the field-validated brand and rollout is brand-by-brand. On Edge EMS sites the controller owns control and the cloud cannot send it a setpoint.

What is the difference between Helios Platform and Helios Edge EMS?

The Platform is cloud software for installers: monitoring, savings reporting and a CRM covering leads, proposals and service. The Edge EMS is a physical controller installed at a solar-plus-battery site that runs that site autonomously without needing the cloud. They work together but they are separate products.

What battery and PV hardware does the Edge EMS support?

CNTE PCS and BMS equipment, and the Huawei SmartLogger. Further PV-system and battery integrations are implemented per project for hardware that supports it. We do not claim it works with any battery.

Can the cloud send a setpoint to an Edge EMS controller?

No, and not merely as a policy. No setpoint command type exists in the protocol. The only cloud-to-controller channel is a bounded set of configuration scopes and four actions, HMAC-signed with replay protection.

What does an Edge EMS site cost?

The EMS licence is perpetual. Platform access for the site is billed monthly, in bands by the usable capacity of its battery, with the largest sites quoted individually. Hardware and integration are scoped per project. Pricing lists every band.

How are savings calculated?

Against a database-driven Cyprus tariff engine using EAC components, fuel adjustment and wholesale export rates, rather than a flat assumed rate. Where a site reports production only, self-consumption must be estimated and those figures are marked as estimated. Where there is no usable import price, no monetary figure is shown at all. Background on why this matters now: net billing in Cyprus.

What problems can Helios detect automatically?

Six detectors run every fifteen minutes. Three work from day one: grid voltage sustained outside the 207 to 253 volt band, the same inverter fault code recurring, and one MPPT string under-producing against its siblings. Three compare a system against its own history and need roughly 7 days to 12 weeks before they are useful: inverter efficiency against a 30-day baseline, battery charging behaviour against a 12-week baseline, and monitoring-device signal deterioration.

Detection depth depends on what each brand's telemetry exposes, and the battery detector is an early-warning trend indicator rather than a state-of-health test.

How do alerts reach me?

By email and in the app. Under Settings › Notifications you choose which automatic messages go out, type by type and channel by channel, and one switch pauses everything to your customers.

Does Helios use AI?

Yes, as add-ons you switch on one by one in Settings: a data assistant, inbox reply drafts, briefings, follow-up suggestions, lead signals, ticket triage, a battery opportunity radar, bill audit, a fleet briefing and an annual energy report, among others. They all draw on one monthly AI allowance: a small monthly allowance is included, and capacity packages add more (AI pricing). The models are Anthropic’s Claude, and anything written for a customer waits for your review. Battery and inverter control never uses AI; it is deterministic.

Which mailboxes can I connect?

Microsoft 365, or any provider through your organisation’s Helios forwarding and BCC address. Mail from known leads and customers is filed on their record. A Gmail connection is offered once Google has verified the Helios app.

Can I bring my existing data?

Yes. Customers, products and invoices import from CSV, with instructions for exporting each file from Zoho, and duplicates are skipped. Imported customers keep their ID from the old system, so invoices imported later attach to the right customer, and imported invoices send no automatic reminders until you switch them on. AI-assisted import is also available as an add-on.

Is Helios available in Greek?

Yes, fully: every screen, and server-generated output such as alerts, emails and reports, not just the interface.

Is there a mobile app?

Yes, on Android: one app for your team — My Day, the fleet, leads, customers, proposals, invoices, service tickets, tasks and the calendar — and one for your customers, with their energy, battery, savings, bills and maintenance visits. iPhone versions are on the way, and the web app works on any phone in the meantime.

Is my data separated from other installers?

Yes. Helios is multi-tenant with per-request tenant isolation, so data belonging to one organisation cannot be reached from another organisation’s session. Within your organisation, roles decide feature by feature what each person can see and do, and whose records they reach. Two-factor authentication is available and can be enforced for administrators.

How long is my data kept, and can I export it?

Raw readings are retained for five years under a GDPR-audited retention policy, then removed automatically. Self-service raw-data export is built in and delivered as a signed link, under GDPR data-portability rights.

Is there a public API?

Yes, on Installer Pro: a documented REST API and webhooks for 20 events. Keys are created in Settings, each capped by a role and never able to do more than the person who made it, with IP allowlists, an expiry date and alerts to your account owners; OAuth access tokens are available too. Webhooks are signed and only sent to endpoints that have answered a verification challenge. The API and webhooks page explains it all, and the reference is at api.helios-energy.app/api/public/v1/docs.

Do my customers pay for their portal?

No. Every customer you connect gets the full Helios customer portal at no cost to them.

How do I get started?

By booking a demo rather than filling in a signup form. Accounts are currently set up with us rather than self-serve, so the first step is a short call to look at your fleet and recommend a plan. Pricing has the plan detail.