Category Archives: Technology

Role of Hydrogen in Transport – A Seminar Report

The energy for the vast majority of transport, and certainly personal transport, still comes from burning fossil fuel in vehicles. Delivering that energy as electricity poses technological challenges with few solutions that promise a complete replacement for what we have … Continue reading

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Natural energy storage

It’s good to be reminded every now and then how plants do energy storage over long time periods much more effectively than we ever can with batteries. The process is less efficient but the lengthy time shifting is invaluable from … Continue reading

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1 Year domestic solar storage data

We have now had our 6kWh Wattstor solar battery (nicknamed ‘Bert’) for a full 12 months. (It actually holds 12kWh but only half of that is used by the system.) It was installed by Gwent Energy CIC. Previously, we simply … Continue reading

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May 2016 to March 2017 Solar Storage Data

As the days get longer, our solar generation increases. March actually generated about the same as last September but the Wattstor battery control system is cautious about allowing the batteries to discharge beyond 70% or so until it’s confident there’s … Continue reading

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Underground Energy Storage

The Glyn Rhonwy pumped storage scheme has apparently received the go-ahead, overcoming objections to any development like this in a National Park.  It uses a disused slate quarry for the upper reservoir, which should make the overall development cheaper, and … Continue reading

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May 2016 to Feb 2017 – Solar Storage Data

Spring is in sight and we have just done the analysis of February’s performance with our solar PV (4kW) plus Wattstor battery (6kWh) system.  The longer days and the sun being higher in the sky have started to make a … Continue reading

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May to December 2016 – Domestic Solar Battery Data

“‘Tis the year’s midnight, and it is the day’s, Lucy’s, who scarce seven hours herself unmasks; The sun is spent, and now his flasks Send forth light squibs, no constant rays;” So, how has Bert, our Wattstor solar battery, fared … Continue reading

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