What We Install
We're selective about the products we fit. Every panel and battery here has been tested on Devon roofs and chosen for performance, durability, and warranty backing.
Solar Panels
High-efficiency panels designed for the South West. Our primary range from Aiko, plus specialist options for specific use cases.
Primary PanelAiko Gen 2
Our go-to panel. All-black, 475W standard (up to 485W depending on batch). N-type ABC cells with industry-leading efficiency. This is what goes on most roofs we do.
- Highest residential wattage available
- All-black aesthetic
- Excellent low-light performance
Large FormatAiko Gen 2 Large Format
Same Aiko tech in a bigger frame, 515W. For properties with larger roof areas where fewer panels at higher output makes sense. Same efficiency, fewer fixings, cleaner look.
- Higher output per panel
- Fewer panels needed
- Same Aiko cell technology
BifacialEurener Bifacial 500W
Spanish-made bifacial panel that generates from both sides. Picks up reflected light off flat roofs, light-coloured surfaces, or ground mounts. 500W from the front, bonus generation from the rear.
- Generates from both sides
- Ideal for flat roofs & ground mounts
- European manufactured
UK AssembledUKSOL
Assembled in the UK, ethically sourced. Our go-to where procurement standards matter, like public-sector jobs. Output's a bit lower than the Chinese brands and warranties are shorter, but for clients who care about provenance, they're a great fit.
- UK-assembled
- Ethically sourced supply chain
- Public-sector procurement compliant
"From multiple quotes and pitches from solar providers, Matt at Yarmer Renewables delivered something refreshingly rare: a system built from product knowledge and from listening to what we wanted. The installation went incredibly smoothly and was professionalism from start to finish."
Inverters & Battery Systems
These are all-in-one inverter and battery systems. Store your solar, optimise tariffs, and in some cases charge your EV, all from one unit.
FlagshipSigenergy Sigenstor
The best premium kit out there. 5-in-1: storage, EV DC charger, EV AC charger, backup gateway, inverter. Up to 54kWh per inverter. AI-optimised, Octopus Intelligent Flux compatible, works with Axle VPP. We've got one running our own place.
- 5-in-1: storage + EV DC + EV AC + gateway + inverter
- Octopus Intelligent Flux & Axle VPP
- AI energy optimisation
Latest GenTesla Powerwall 3
The latest generation Powerwall with a built-in 11.5kW solar inverter, eliminating the need for a separate unit. DC coupled for maximum efficiency (96-97%), but also works as an AC coupled battery. Scalable up to 40.5kWh with additional units. Tesla Energy now operates as an energy provider, opening up potential for preferential tariffs for Tesla ecosystem owners.
- Built-in 11.5kW solar inverter with 6 MPPT trackers
- DC and AC coupled options
- Scalable up to 40.5kWh (3 units)
- Tesla app with Storm Watch and grid participation
Great ValueFox ESS
Solid, well-priced hybrid inverter and battery system. Octopus Intelligent Flux compatible out of the box. Good all-rounder for standard residential installs where you don't need the premium features of the Sigenstor.
- Octopus Intelligent Flux compatible
- Well-priced for residential
- Expandable capacity
Shading SpecialistSolarEdge
Optimiser-based inverter system. Each panel gets its own optimiser, so shading on one panel doesn't drag the rest down. We fit these on complex roofs with multiple orientations or partial shading where standard string inverters would lose output.
- Panel-level optimisation for shaded roofs
- Individual panel monitoring
- Multiple roof orientations supported
Coastal GradeAnker SOLIX X1
Modular battery rated for the worst the South West coast can throw at it. IP67 (most kit is only IP65) with the highest corrosion rating on the market, level 5, where the Powerwall is level 4. Scales from 5kWh to 180kWh.
- IP67, exceeds industry standard IP65
- Corrosion level 5 (highest available)
- Scales massively for commercial
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