Inverters
Viridian Solar CSI3000 Clearline Inverter 3.0kW
UK-engineered string inverter designed to pair with Viridian in-roof Clearline panels. 3kW single-phase.
£385.00 ex VAT
How it scores
Scores based on published manufacturer specifications and weighted criteria — not lab testing. Methodology.
Specifications
- Phase
- single
- Hybrid
- No
- Max kW
- 3
- IP rating
- IP65
- Weight kg
- 11.5
- Mppt count
- 1
- Dimensions mm
- 400x310x165
- Warranty years
- 12
- Optimiser required
- No
- Peak efficiency %
- 97.5
What I noticed
Viridian Solar is one of the few UK-based solar manufacturers, specialising in in-roof integrated panels and matched inverters. The CSI3000 is the 3kW string inverter designed specifically to pair with the Viridian Clearline in-roof panel array.
Standard single-MPPT design optimised for the matched Viridian PV array (typically single string, single orientation since in-roof installs go on one main roof slope). Integrated DC isolator and UK-spec G98/G99 compliance.
Who it suits
Households installing the Viridian Clearline in-roof PV system — this inverter is engineered as the system-matched partner. UK manufacturing also matters for sustainability/ESG considerations.
What I'd watch for
Best paired with Viridian Clearline panels — third-party panel use is functional but loses the system-matched warranty advantage. Single MPPT limits to single-orientation arrays. UK installer familiarity is moderate.
CSI3000 Clearline Inverter 3.0kW head-to-heads
Side-by-side scoring vs each alternative in our shortlist.
Other Inverters on my shortlist
Read next
Background reading and decision-tree pages that put this product in context.