Sunsynk Ridgeblade

wingnut771 said:
How much are you willing to spend?
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It'll obviously be a cost/benefit trade-off. I'd need to see a price before I can make a call, but also some performance figures.

I'd say if one of these thingies were less than R20k I'd go for it. R20-R40k I'd run some numbers based on average wind speeds, etc. Above that I'd probably wait until it becomes more economical.
 
newby_investor said:
It'll obviously be a cost/benefit trade-off. I'd need to see a price before I can make a call, but also some performance figures.

I'd say if one of these thingies were less than R20k I'd go for it. R20-R40k I'd run some numbers based on average wind speeds, etc. Above that I'd probably wait until it becomes more economical.
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Agreed. I'd gladly pay circa R30k for a consistent 24/7 300W power supply
 
newby_investor said:
It'll obviously be a cost/benefit trade-off. I'd need to see a price before I can make a call, but also some performance figures.

I'd say if one of these thingies were less than R20k I'd go for it. R20-R40k I'd run some numbers based on average wind speeds, etc. Above that I'd probably wait until it becomes more economical.
Click to expand...
I would rather have a bi-directional meter and sell my PV power and use the grid as a battery.
 
Speedster said:
Not sure where you got that graph, but that looks to be about 500W minimum
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Hourly renewable generation - Eskom Data Portal

Hourly renewable generation per resource type for the current and previous month. This only reflects renewable owned by Eskom or that Eskom has contracts with. Embedded generation is not included.
www.eskom.co.za www.eskom.co.za

That's for the whole country.

I would rather spend R30k on another battery and charge it when its cheap and export when its expensive and break even in 3 years.
 
wingnut771 said:

Hourly renewable generation - Eskom Data Portal

Hourly renewable generation per resource type for the current and previous month. This only reflects renewable owned by Eskom or that Eskom has contracts with. Embedded generation is not included.
www.eskom.co.za www.eskom.co.za

That's for the whole country.

I would rather spend R30k on another battery and charge it when its cheap and export when its expensive and break even in 3 years.
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Oops. I missed the MW scale.

Where we are there's no cheap/expensive times. It's all just equally expensive.
 
Speedster said:
Oops. I missed the MW scale.

Where we are there's no cheap/expensive times. It's all just equally expensive.
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Yes, if they change that, loadshitting ends tomorrow. When resources are tight, the price goes up, people use less and people like us dump our batteries into the grid paying them off in no time, flattening the curve.

We should ignore NERSA.

They are counter-revolutionary.
 
lkpat said:
Apparently it is Ideally mounted on the ridge of your roof where the slightest breeze towards the housr causes it to spin. There's an updraft effect when the wind blows along the roof towards the ridge so it runs a lot more with less wind than traditional turbines.
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That’s the thing - if places with waaaay less sunshine than we enjoy haven’t adopted this extensively then it likely means it isn’t worth it compared to PV with battery.

Perhaps as an add on should one find themselves with PV that doesn’t meet all needs, and they’re out of space or the costs are just right … but will see how it pans out.
 
Found some more information:

Start up speed: 2.6knots or just shy of 5km/h

Average Expected Output
5,000 kWh p.a. @ 6 m/s (21km/h) mean wind speed / 40° roof slope

This is for a standard 5 rotor system as I posted above..

The start up speed is sufficiently low, however, cape town average wind speed p.a is only ~ 4.5m/s.. I don't think this would end up being economical for a 5 rotor system in cape town.. perhaps for a 10 rotor system, but depends on the price increase..

Edit:

Also seems you need a wind specific inverter, but unconfirmed..
 
WAslayer said:
Found some more information:

Start up speed: 2.6knots or just shy of 5km/h

Average Expected Output
5,000 kWh p.a. @ 6 m/s (21km/h) mean wind speed / 40° roof slope

This is for a standard 5 rotor system as I posted above..

The start up speed is sufficiently low, however, cape town average wind speed p.a is only ~ 4.5m/s.. I don't think this would end up being economical for a 5 rotor system in cape town.. perhaps for a 10 rotor system, but depends on the price increase..

Edit:

Also seems you need a wind specific inverter, but unconfirmed..
Click to expand...
I would rather have 100kWh battery.
 
WAslayer said:
Found some more information:

Start up speed: 2.6knots or just shy of 5km/h

Average Expected Output
5,000 kWh p.a. @ 6 m/s (21km/h) mean wind speed / 40° roof slope

This is for a standard 5 rotor system as I posted above..

The start up speed is sufficiently low, however, cape town average wind speed p.a is only ~ 4.5m/s.. I don't think this would end up being economical for a 5 rotor system in cape town.. perhaps for a 10 rotor system, but depends on the price increase..

Edit:

Also seems you need a wind specific inverter, but unconfirmed..
Click to expand...
Yeah, that's the problem with any of the current wind technology - they need A LOT of wind. I don't think most people realise how much 5km/h is, and at 5000kWh p.a. at 21km/h you're probably looking at 500kwh p.a. at 5km/h.

EDIT: I wonder how much "normal" wind speed one requires for the 21km/h roof assisted wind speed?
 
WAslayer said:
Found some more information:

Start up speed: 2.6knots or just shy of 5km/h

Average Expected Output
5,000 kWh p.a. @ 6 m/s (21km/h) mean wind speed / 40° roof slope

This is for a standard 5 rotor system as I posted above..

The start up speed is sufficiently low, however, cape town average wind speed p.a is only ~ 4.5m/s.. I don't think this would end up being economical for a 5 rotor system in cape town.. perhaps for a 10 rotor system, but depends on the price increase..

Edit:

Also seems you need a wind specific inverter, but unconfirmed..
Click to expand...
How much power at start-up speed?
 
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