View the thread, titled "Help!" which is posted in Solar PV Forum | Solar Panels Forum on Electricians Forums.

B

Berneray

Afternoon guys......First post on here though have read loads and loads of great ones.

Looking for some help. We are a small family firm of electricians based in the North East of Scotland. We do good work for, hopefully, a decent price.

Its hard going but as long as we get two or three installations a week to go along with our other stuff we are happy....

We have hit a problem with a job we are working on. Its an 100 year old detached house deep in the woods. Stone built with bedrooms in the attic space. An old LPG fired AGA that only does the water. Rest of the house is heated with old storage heaters. No access to mains gas. Clients are filling the tank at £2K a fill plus paying £125 a month for electricity.

EPC based on current circumstances comes out at Band F.

We are proposing a 4 kwp ground mount, replacing the old AGA with a wood burning ESSE which will do the water, cooking and heating, properly insulating the roof space and perhaps Solar Thermal as they might not want the ESSE running over the summer months. I know woodburners and thermal might seem overkill but its our clients suggestion as they say they don't want to have to use the ESSE over the summer simple for water. Clients are very green minded and want to have as much control over their energy spend as possible.

The original EPC also recommends wall insulation which is not really an option as external would spoil the look and character the the house and internal would cause too much distruption. Also the cost for a house with their footprint would be excessive to say the least.

The EPC Advisor we use has run our proposals though his software.....and (You know what coming next I bet) we can only get to 53 points...tow short of the magic number....

We want to give best advice to our clients but are struggling to know what to do next. Neither a combi boiler or external insulation are an option.

Any suggestions you guys give us will be gratefully accepted....because right now we are stumped....!
 
what does epc say if you put 4kw pv on roof rather than solar thermal panels the customer would benefit more from this than just hot water in the summer.
 
Apparently there is no difference. We suggested this to customer but they want the roof for thermal. They had thermal in a previous house and loved it....They have plenty of ground for the PV system...they are on a hill with a steep south facing bank which seems perfect for a 4 kpw ground mount...
 
Tell the DEA it has double glazing that was fitted in 2009, that will bump it up,
Of course, this is just a suggestion to see if it will get you enough points, I am not suggesting that you do not replace the windows....

Oh and energy saving light bulbs may add a couple of points too.
 
I would think updating the storage heaters would be the easiest solution.
I presume all the lights are low energy
 
you could also look at voltage optimisation as a means of energy efficiency. The technology seems to offer some savings according to some.
 
I'd think you'd need to replace the storage heaters with a wet heating system, probably heat pump and / or biomass boiler. Possibly not so out of the question if you're already planning to add a small biomass boiler for the water anyway.

also, if they've got storage heaters, do they have 3 phase? I ask because we did a job up that way that had 3 phase on a house because if used to have storage heaters, and we were able to install 10kWp of PV. I'd think 10kWp of PV would take it to a band D anyway if it were a 3 phase install.
 

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