Search found 61 matches

by kla456
Sun Apr 20, 2025 11:05 am
Forum: Wind Power
Topic: Ripple energy "strike off"
Replies: 193
Views: 51617

Re: Ripple energy "strike off"

I am not a member of WB, but I think this part might be more significant:
should have been held in a ring-fenced client account. We have not yet been able to confirm whether this is the case
You can't relax until the money is safe.
by kla456
Sat Apr 19, 2025 1:40 pm
Forum: Wind Power
Topic: Ripple energy "strike off"
Replies: 193
Views: 51617

Re: Ripple energy "strike off"

This posted yesterday regarding DW I’m one of the DW Board members and can confirm that there is a lot of work going on behind the scenes to ensure the solar farm is completed in line with schedule. As at the time of writing the demise of Ripple hasn’t really added to any project delays - work has c...
by kla456
Thu Apr 03, 2025 11:42 am
Forum: Wind Power
Topic: Ripple energy "strike off"
Replies: 193
Views: 51617

Re: Ripple energy "strike off"

Waiting to hear which companies are interested to buy Ripple out of administration. I think Ripple had the right concept, just Sarah and crew were a bit out of their depth and the concept needs scaling up. I hope the coops can be kept under one management and move forward together with a better reso...
by kla456
Mon Mar 31, 2025 3:12 pm
Forum: Energy efficiency
Topic: Airtightness test booked - how to get the best from it?
Replies: 16
Views: 1884

Re: Airtightness test booked - how to get the best from it?

We got to 1 air change/hour and left it at that. Passiv haus standard of 0.6 is not expected for refurbs/retrofits. For MVHR consider small in-the-wall room units - Fresh-r, DUCO, Renson make these in Netherlands. Well-suited to refrbishment projects - require no ducting - come with humidity/Co2 sen...
by kla456
Sun Mar 30, 2025 9:41 am
Forum: Energy efficiency
Topic: Airtightness test booked - how to get the best from it?
Replies: 16
Views: 1884

Re: Airtightness test booked - how to get the best from it?

Air tightness is hard to achieve, especially with a revovation project (passive haus accept a lower standard for refurbs). Mine is a 1950s bungalow with brick cavity walls. For air tightness we replastered one coat externally, before 200mm insulation and acrylic render and connected the extenal wall...
by kla456
Sun Mar 30, 2025 9:16 am
Forum: Energy efficiency
Topic: Passive stack chimney ventilation
Replies: 5
Views: 531

Re: Passive stack chimney ventilation

Consider small in-the-wall room units - Fresh-r, DUCO, Renson make these in Netherlands. Well-suited to refrbishment projects - require no ducting - come with humidity/Co2 sensors. Try to attend a trade exhibition in Netherlands (they lead with small MVHR) eg. VSK Utrecht. Consider accessibility for...
by kla456
Tue Nov 19, 2024 10:09 am
Forum: Spaceheating
Topic: underfloor heating under floorboards - any ideas on the numbers?
Replies: 28
Views: 9140

Re: underfloor heating under floorboards - any ideas on the numbers?

Sounds like a project! Make the plan how to get the whole building to net zero (a passiv haus envelope) before you start any work. Consult with others on the draft plabn or hire a consultant before finalising the plan. Implement in one or more stages - dont be tempted to start with half-measures. En...
by kla456
Tue Sep 03, 2024 5:17 pm
Forum: Wind Power
Topic: Part ownership of a Ripple Wind Turbine, fancy it?
Replies: 3998
Views: 1260688

Re: Part ownership of a Ripple Wind Turbine, fancy it?

Again Joeboy!

4kw PV installed UK approx cost £5k for approx 3.4kw annual production (sample installation, most common in UK)
Ripple investment to get 3.4kw annual production would be approx £4k (Ripple investment to achieve the same amount)

Looking good for Ripple, I would say
by kla456
Tue Sep 03, 2024 3:28 pm
Forum: Wind Power
Topic: Part ownership of a Ripple Wind Turbine, fancy it?
Replies: 3998
Views: 1260688

Re: Part ownership of a Ripple Wind Turbine, fancy it?

Ah well, you know where you're heading! Cheers. :D Although, knowing how far cash can be stretched in the secondhand market I'd be pricing out as diy at about £450 per 1kW PV install and I'd groundmount it then use the money saved once live to roll over into further RE projects. Ripple being one ca...
by kla456
Tue Sep 03, 2024 1:30 pm
Forum: Wind Power
Topic: Part ownership of a Ripple Wind Turbine, fancy it?
Replies: 3998
Views: 1260688

Re: Part ownership of a Ripple Wind Turbine, fancy it?

Hello Joeboy, I'm focused on quantity of renewable generation towards nett zero, not current ROI. PV will generate over 25 years (beyond my life, but I have children) and many changes/tech improvements/Gov.interventions can be expected over that period which can upset current ROI calculations - just...