Wind & Sun announced on 28 May 2025 that the MY-PV SOL•THOR is available to order from the company1. The SOL•THOR is a DC power manager for photovoltaic heat, priced at £643.251.
The unit is described as a 0 to 3.6 kW linearly regulated DC Power Manager for photovoltaic heat1. It takes power directly from a solar array and transfers it to a heating element, such as an immersion heater or space heater, without the need for a grid connection or external inverters1. Wind & Sun states that it can be integrated into a series between 1 and 10 PV modules, with parallel connection of up to 2 module strings1. Other stated specifications include an input current of up to 26A and an input voltage range of 30 to 230VDC1.
"SOL•THOR is a 0 to 3.6 kW linearly regulated DC Power Manager for photovoltaic heat."
The announcement lists homes, businesses, apartments, mixed-use properties and glamping among the applications1. Wind & Sun states that the waterproof construction is suitable for use in all weather conditions and for outdoor installations, and that the unit is completely self sufficient, with no connection or approval from a grid operator1. It also cites no stagnation and auto reset, and says the device is capable of generating a higher yield from PV at lower ambient water temperature1.
| Specification | Figure |
|---|---|
| Power range | 0 to 3.6 kW, linearly regulated |
| Input current | Up to 26A |
| Input voltage range | 30 to 230VDC |
| PV modules in series | 1 to 10 |
| Module strings in parallel | Up to 2 |
| Price | £643.25 |
Why it matters for households
The SOL•THOR sits in a different part of a home's solar setup from the panels and inverter that supply mains electricity. It takes DC power from the array and puts it straight into a heating element, so the electricity is used as heat on the roof side of the system rather than being converted to AC and exported or consumed through the normal circuits1. For a household, that means the hot water cylinder or a space heater becomes the destination for solar generation, and the amount of power diverted varies continuously across the 0 to 3.6 kW range rather than switching on and off1.
Because the unit needs no grid connection or external inverter, and no connection or approval from a grid operator, it operates independently of the grid supply and of export arrangements1. That is a form of energy independence at the point of use: the heat produced depends on the array and the heating element, not on the grid being available. The trade-off implied by the design is that this generation cannot be used for other household loads or stored in a battery, since it never passes through the mains installation. Wind & Sun also states that the unit can be integrated between 1 and 10 PV modules, which indicates it is intended for smaller arrays rather than whole-roof systems1.
The announcement does not report how the SOL•THOR interacts with an existing inverter, battery or hot water cylinder thermostat, nor whether it qualifies for any grant or incentive. Those points have not been reported1. Households weighing solar heat options may also look at PVT hybrid panels, which produce electricity and heat from the same panel, and at Grant solar thermal systems, which use collectors, controllers and cylinders rather than a DC diverter. Both sit within the wider solar PV picture of generating and using power at home.
What happens next
No installation dates, delivery times or further product launches are given in the announcement1. The only dated step is the availability to order, announced on 28 May 20251.
Sources1 cited
- [Introducing: MY-PV SOL•THOR
– Wind & Sun](https://www.windandsun.co.uk/blogs/blog/introducing-my-pv-sol-thor), windandsun.co.uk