Registered installer

What is a registered installer?

A registered installer (oprávnený zhotoviteľ) is a company that has a contract with SIEA and may install devices under voucher schemes. SIEA is the Slovak Innovation and Energy Agency. Registration ends with a contract on reimbursing vouchers (zmluva o preplácaní poukážok), which SIEA publishes in the Central Contracts Register. The status comes from this contract, not from a licence.

The status matters only under the voucher route. In that route the household redeems a voucher with the installer. The installer then claims the money back from SIEA. The status therefore belongs to the Zelená domácnostiam family of programmes. Whether a household needs one depends on the round it applies in.

Which programmes still require a registered installer?

The programme's homepage states that only registered installers may arrange installations under Zelená solidarita. The Zelená solidarita conditions add a deadline. The installer must hold a contract signed with SIEA by the date of the voucher reimbursement request. Zelená solidarita is the programme for low-income households, and it runs on the voucher route. SIEA says that its current conditions apply only to applications activated with income consents delivered by 30 September 2026. Read the conditions that apply to your application.

Earlier rounds of Zelená domácnostiam also ran on vouchers. SIEA's FAQ describes the old mechanism: the installer deducted the value of the voucher from the price, and SIEA then reimbursed the installer. That is why the registered-installer list existed in those rounds. The programme's own pages describe this in the past tense. Read them as the old system, not as a rule for new applications.

Does Zelená domácnostiam II require a registered installer?

No. SIEA's FAQ states that the voucher system is abolished in Zelená domácnostiam II and that choosing the supplier is free. The household is responsible for choosing a qualified installer and for setting up the contract with that installer. SIEA no longer binds installers to the programme conditions, so the contract between the household and the installer carries more weight.

The payment flow also changed. SIEA pays the contribution directly into the household's bank account after the installation and a successful review. The FAQ excludes accounts that link to economic activity, such as business, credit card, savings and term accounts. The household therefore cannot name the installer's business account. The household submits the full application itself. It may authorise an installer to do so only by a notarised power of attorney. In that case the household loses its own access to the application.

Programme route	Voucher used	Registered installer required	Who receives the money
Zelená solidarita	Yes	Yes, with a contract signed with SIEA	The installer's account
Earlier rounds of Zelená domácnostiam	Yes	Yes, from the installer list	The installer, who was reimbursed by SIEA
Zelená domácnostiam II	No	No, the household chooses freely	The household's personal account

How does the registration process work?

The registration page applies to installers on the voucher route, so it is the process to read for Zelená solidarita. The page says that a business person under the Commercial Code can apply if registered in Slovakia or another EU state. The applicant must hold the certificate for installers under § 13a of the act on support of renewable energy sources. Otherwise it must make sure that persons with that certificate do the installations. Registration runs online through the "Vstup pre zhotoviteľov" portal. The login is the applicant's company identification number (IČO), and the applicant sets their own password. The page states no registration fee, so ask SIEA before you start.

1. Create the account with the IČO and answer the email from SIEA within 24 hours.
2. Check that the company details, which the portal fills in from the statistical register, are correct.
3. Check that the signatories and the bank account details are correct.
4. Upload a valid certificate of the qualified person and that person's sworn statement that they will install the devices.
5. SIEA reviews the profile and sends the contract on paper, in two copies.
6. Sign one copy and return it to the Bratislava office in an envelope marked "Registrácia zhotoviteľa".
7. SIEA publishes the contract in the Central Contracts Register. It takes effect the day after publication, and the installer is then added to the list.

The certificate for installers (osvedčenie pre inštalatérov) comes from the Slovak ministry under § 13a of act 309/2009. It exists for people who install biomass boilers and stoves, photovoltaic and solar thermal systems, shallow geothermal systems and heat pumps. It is valid for five years and extends once by five years if the holder takes the update training. A registered installer holds this certificate or relies on a person who does.

How can a household check the list?

The page Zoznam zhotoviteľov at zelenadomacnostiam.sk explains who is on the list. It does not show the entries itself. It links to the list of eligible installers in a separate SIEA system at is.zelenadomacnostiam.sk, and it describes no search or filter. SIEA says that installers may join the list at any time while Zelená solidarita runs. A household needs this check only if its application falls under Zelená solidarita or an earlier voucher round. Under Zelená domácnostiam II the household does not need the list to be eligible.

The list publishes contact details only for installers who agreed to publish them. SIEA's installer page states that installers who meet the conditions and commit to install under the contract are included. It advises households to check references and the service after installation. It also advises them to compare offers from several installers. Households who cannot check a status can call the SIEA hotline, which the page lists as 0800 199 399, option 1.

The device check is separate from the installer check, and it applies in every round. The installed device must be on the list of eligible devices no later than the application deadline. The table below sets the two checks side by side.

Check	Applies when	Where SIEA publishes it
Installer is registered	Zelená solidarita and earlier voucher rounds	List of eligible installers, linked from Zoznam zhotoviteľov
Device model is eligible	All rounds, including Zelená domácnostiam II	List of devices in the SIEA information system

What should a household check before signing with an installer?

Under Zelená domácnostiam II the household picks the supplier itself, so the checks sit in the contract. Ask the installer which device model it will fit. Get written proof that the device is on the list of eligible devices. Agree on who handles the application. Ask how the installer provides service after installation, and compare offers from several installers before you choose.

A device that is not on the list stays ineligible even if the installer is reputable. Keep the invoice and the proof of payment, because the household must send both when it submits the application.

How is a registered installer different from a supplier?

SIEA's application steps use the word supplier (dodávateľ). A supplier is any company that sells the device or agrees to install it for the household. Under the voucher route, a registered installer is a supplier that also holds a contract with SIEA. Under Zelená domácnostiam II, every supplier is in the same position, and the programme does not reimburse the supplier at all.

Term	Who it describes	Source of the status
Registered installer	A company that installs under the voucher route	Contract with SIEA, published in the Central Contracts Register
Supplier	Any company that sells or installs the device	The household's own contract
Qualified person	The person who carries out or signs the installation	Valid certificate of professional competence

The device itself is what the programme checks against its list. For examples, see photovoltaic panel, and for heat pump efficiency see seasonal COP.