Green Solar Energy Products for Yachts
Solar Hot Water systems specialists.



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We have owned Aramon - a Bavaria 39 - since 2015. In that time we have cruised from Turkey to Greece, Italy and France usually spending 6 months a year on board. You can read something of our experiences in the Cruising Guide pages here. We partner with Noforeignland to help you plan your cruise and get the most out of each and every stop, and with Zizoo if you need to charter a yacht.


We also run a Facebook group - Med Sailing Info - that exchanges non-technical cruising information. 

We are committed to the preservation of our environment, so we try to shop locally, and look for sound garbage disposal wherever we go. We also avoid marinas if possible, and don't run our engine in secluded places.


On board we like our creature comforts, and that led us to develop the first of our green energy products - a 12v/300w system that uses surplus solar energy to heat the water in our tank. There is now a 220v/900w version as well. 

The recent appearance of hybrid MPPT controller/inverters and the fall in prices of lithium batteries means that we will replace our current gel domestic batteries with lithium when the need arises, and we have replaced our noisy petrol outboard with a quiet electric outboard that is free to run. We now have hot water and mains electricity all through our sailing season.

Selling the products here helps us fund this site that consists mainly of help for other sailors.


Personal Experience

The products that we sell are all in use on our own yacht. We are experienced Mediterranean cruising sailors. We have active experience not of every single variable, but of all the product lines - solar panels, controllers, batteries, solar hot water, and electric outboards. 

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Lithium Batteries

We are convinced that lithium batteries are now the right choice for all cruising yachts for their domestic use. They are cheaper, smaller, lighter, and offer 4 times more usable power than an AGM equivalent. You can have unlimited electrical appliances and hot water. What we propose is second use reconditioned systems that come from Renault and Nissan electric vehicles. By buying from us, you are buying "green" as well as inexpensive.

Solar Hot Water

For those still with lead/acid domestic battery systems we offer a 12v and 220v solution. The solar hot water system controllers are made to our design by our European manufacturing partner. It monitors the battery charge level and the water temperature.  If the domestic batteries are over 12.6v and the water temperature under 42, it turns on. It turns off if the batteries fall below 12v and if the water temperature exceeds 52°C. In the event of a low voltage cutout, it only restarts when the voltage is more than 12.6. The heating elements are made in China to our specifications, and are equipped to receive our temperature probe. It is this dual control function that makes the product unique. If you are connected to shore power, the voltage will always be over 12.6 so the element will switch on or off according to the water temperature. In summer your batteries will be fully charged by noon and the rest of the day your energy production is discarded. You do need a minimum of 400w of solar and 250Ah of domestic batteries.

NEW! We can supply calorifiers that can have an engine heat exchanger, a 12v/300w heating element, and another that is 240v/1000w or any combination of those three. Offering much higher performance than that of the mainstream manufacturers, they are available in 25, 30, and 40 litre capacities. Apart from the improved water heating performance, the controller is cheaper because it is only monitoring battery voltage; The built-in thermostat controls the water temperature.

Electric Outboards

Our range of small electric outboards is very competitively priced, and the unit and battery are both very light, so easy to take on and off your tender. We expect combustion engine powered tenders to come under increasing negative pressure in the immediate future. Two strokes are already banned in many places making electric a "must-have".


Electric Propulsion

Although we fully accept that electric propulsion is not viable for all sailors, technical progress means that for some cruising yachtsmen it is a realistic and attractive option. Fitting an electric motor to drive your current propellor is easy and you can install a small genset in the space left by the old diesel engine.  We recommend at least 5Kw. Cost and weight of the complete system is way below that of a replacement diesel!

Our solutions are all based on 100% guaranteed recycled motor industry (mainly Renault & TESLA) components, so are as "green" and reliable as you can get! 


The 400v batteries will be custom-made to the space you have available where your diesel storage tank used to be.

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