How to Choose a Plug-In Solar Kit in the UK

The current Plug-in Solar Device Interim Product Specification, Version 2.0 defines the product as a complete device or system.

At minimum it comprises:

The specification permits one-component, two-component and multi-component products.

So the panels and inverter do not have to arrive as one physical object.

But there is an important difference between:

a manufacturer-defined multi-component kit

and:

a consumer assembling unrelated parts that appear compatible.

The current Great Britain route is built around the first.

Not by itself.

A microinverter can be one component of the qualifying product, but Version 2.0 also defines requirements for:

So a retailer listing saying:

"solar panel + 800 W microinverter"

does not, on those words alone, establish that the complete product fits the Great Britain plug-in solar route.

Version 2.0 requires the product as a whole to carry permanent identification including the manufacturer and model, together with a serial number, code or another means of identifying the device.

That matters because compliance is about the specific device, not a general brand reputation.

Current consumer guidance tells buyers to check the specific model in the current ENA Connect Direct device register.

You are checking the product record, not making the network connection application yourself through Connect Direct.

Under Version 2.0, the manufacturer must:

The key phrase is:

identified as compliant

The specification expressly says that submitting a device for registration is not, by itself, evidence of compliance.

It also says completion of type testing alone does not demonstrate compliance to G98.

Not by itself.

Terms such as:

This does not make those descriptions inherently false.

It means they do not answer the whole buying question.

Not for current product information.

The historic ENA Type Test Register says its data only runs to 16 April 2024 and that its functionality and data moved to Connect Direct.

For a new plug-in solar purchase, use the current Connect Direct register rather than relying on an old search result or cached list.

Because the category is changing quickly, this page deliberately does not publish a fixed number of compliant products.

Check the exact model again before paying.

Do not compare kits using one headline number such as:

"800 W kit"

First establish:

800 W of what?

Under the current Product Specification, combined PV-module capacity can be up to 2,000 W DC, while the mains/output side is subject to separate restrictions including an 800 VA maximum apparent-power limit.

So the words "800 W solar kit" are not enough to tell you how much panel capacity the product contains.

That is not automatically outside the current route.

The current combined PV-module maximum is 2,000 W DC.

But where total module capacity is above 960 W, the manufacturer must advise the consumer to consider professional assessment of the existing electrical installation before installation.

So when comparing a product above 960 W, check that the manufacturer documentation contains that advice.

Do not read 960 W as the maximum permitted panel capacity.

Yes.

The mounting system is part of the product framework, not an incidental accessory.

Version 2.0 says a mounting system must be supplied as part of the complete kit according to the customer's mounting requirements, and the manufacturer must define the intended mounting configurations and installation environments.

That means:

are not automatically interchangeable uses.

A product designed and documented for a ground installation should not be assumed suitable for a balcony simply because the panels physically fit.

The useful buying question is:

Does the manufacturer explicitly support the location and mounting method I intend to use?

Do not assume so.

Version 2.0 requires the manufacturer to specify the mounting system and its components and to define the permitted mounting configurations.

It also says mounting arrangements relying solely on things such as:

are not permitted.

This page does not tell you which substitute brackets to use.

If the supplied mounting does not suit your intended location, verify whether the manufacturer supplies or explicitly supports another configuration.

Do not assume that any cable or connector that appears to fit is part of the manufacturer-approved configuration.

Version 2.0 contains requirements for compatible cables and connectors and requires product documentation to identify the appropriate connection arrangement.

The buying question is:

Does the kit already include, or does the manufacturer explicitly specify, the correct connection arrangement for the way the product is meant to be used?

This page does not provide connector-selection or wiring instructions.

The Great Britain route uses the manufacturer-supplied connection lead and plug designed for the UK socket arrangement.

You do not need to inspect the plug as an electrical engineer.

The important buying distinction is:

the GB plug is part of the manufacturer-defined product

rather than:

an overseas configuration being converted by the consumer after purchase.

No, not as part of the qualifying connection arrangement described by Version 2.0.

The specification does not permit:

and its required instructions prohibit extension cables.

Current consumer guidance gives the same practical message.

This is particularly relevant when looking at products originally supplied for another country's socket system.

Do not assume that compliance in another country makes the exact product suitable for the Great Britain route.

The British Product Specification draws on the German plug-in solar standard but contains UK-specific requirements and takes priority where they differ.

A product may differ between markets in areas such as:

There is nothing inherently wrong with a product being designed for Germany or another European market.

The question is:

Has this exact configuration been supplied and verified for the Great Britain route?

Adding a travel adaptor does not answer that question.

Only if the exact product documentation says it can.

Version 2.0 requires the product documentation to state whether the inverter is intended:

Components intended for outdoor installation must also meet the relevant environmental-protection requirements.

So do not infer "weatherproof" from a product photograph.

Read the manufacturer's stated installation environment.

The Product Specification requires documentation to identify relevant environmental limitations, including corrosive environments where applicable.

The buying check is simple:

If the intended position is unusually exposed or corrosive, check that it falls within the manufacturer's documented use conditions.

No specific app is required by the Product Specification.

But the inverter must provide a way for users to see operating status and error information, either on the device itself or through an accessible interface such as a phone.

So compare the practical question:

How will I know if the product is operating normally or reporting a fault?

Do not confuse a polished app with regulatory compliance.

A qualifying product is expected to come with substantial product-specific English documentation.

Among other things, Version 2.0 requires information covering matters such as:

They matter, but they answer a different question.

Current Great Britain electrical-product rules can recognise UKCA or CE marking where the applicable requirements are met.

But:

CE does not mean "GB plug-in solar compliant".

UKCA does not mean "GB plug-in solar compliant".

The complete product still has the specific Interim Product Specification and G98/ENA requirements.

Treat those general conformity marks as a separate product-conformity check, not a substitute for checking the exact device record.

Do not assume so under the current plug-in solar route.

Version 2.0 explicitly excludes:

Its required instructions also warn that the plug-in solar device is not intended to be connected to or operated with a battery energy-storage system under this route.

That does not mean battery storage in Britain is generally prohibited.

It means a product sold as:

solar + battery + plug-in

should not automatically be assumed to fall within this particular product route.

No.

Warranty is a normal commercial comparison point, and current consumer guidance recommends checking it.

But Version 2.0 does not prescribe a warranty duration.

So a long warranty cannot substitute for:

None of these things proves by itself that a product is illegal or unsafe.

They are reasons to verify before buying.

There is no score.

The point is to make different retailer pages describe their products using the same set of facts.