Their hydro site says the system is capable of 100% of renewable energy production; but elsewhere state that 65% per annum of demand is from renewable energy.
Thus obviously still reliant on diesel to some extent. In fact 20% of time the diesel generator is off production...or stated another way; 80% of time the genset is still running.
Here's the concluding paragrapg of the Wikipedia history
Quote During the 2003 expansion a vanadium redox flow battery was installed at a cost of $4M (or $20,000 per kW),[4] containing 55,000 litres of vanadium based electrolyte—one of the first such installations on a wind farm. This allowed up to 800 kWh of surplus electricity to be stored. The battery has an output power of 200 kW, making up around 3% of total capacity, and could be used to smooth the substantial variability in wind output over minutes to hours. When used in conjunction with a variable resistive load, a higher wind penetration is possible, permitting the substantial second to second variability to be controlled with the resistor, reducing the need to spill excess wind through throttling of the turbines. A short-term peak output of 400 kW can be supplied. As a result, there has been a substantial reduction in the use of diesel fuel, however the full diesel capacity must be maintained, including the need to maintain spinning reserve for system security.[5] However, the system proved to be not robust enough and failed after a relatively short life. It has been replaced with a 1.6 MWh "advanced lead acid technology" battery.[6] Quote
Its a proprietary system; meaning you can pay if you want the details.
The 2003 battery storage upgrade cost $20000 dollars per Kw. Thats $20 per watt (no doubt Austrailian which used to be just about the value of Canadian dollars. Putting subsidies and grants into perspective with the former Sask Power renewable enegy grant of 61 cents a watt for solar wind and mmaybe two Net Metering Grid Tie flare gas generation projects; that's a 30 time greater subsidy than the Sask Power incentive that had to be cancelled because everyone's power rate was set to go up by what were considered to be too unacceptable amounts.
Austrailia appears to be the financing body for the island. There were $18 Million dolar disbursement; figures of $2500 per annum costs for one part of project and all for a pretty small scale electrical supply (in terms of other utility grids)
Not in any way should this to be construed to denegrate their efforts to get a better electrical supply. Still haven't found what the cost per Kwh was before and after these upgrades; and how any debt has been retired or forgiven
I will check on where King Island actually is; and what the "Chamber of Commerce" has for attractions and agicultural/industrial development etc.
Help us out mallee....its a small world.
Thus obviously still reliant on diesel to some extent. In fact 20% of time the diesel generator is off production...or stated another way; 80% of time the genset is still running.
Here's the concluding paragrapg of the Wikipedia history
Quote During the 2003 expansion a vanadium redox flow battery was installed at a cost of $4M (or $20,000 per kW),[4] containing 55,000 litres of vanadium based electrolyte—one of the first such installations on a wind farm. This allowed up to 800 kWh of surplus electricity to be stored. The battery has an output power of 200 kW, making up around 3% of total capacity, and could be used to smooth the substantial variability in wind output over minutes to hours. When used in conjunction with a variable resistive load, a higher wind penetration is possible, permitting the substantial second to second variability to be controlled with the resistor, reducing the need to spill excess wind through throttling of the turbines. A short-term peak output of 400 kW can be supplied. As a result, there has been a substantial reduction in the use of diesel fuel, however the full diesel capacity must be maintained, including the need to maintain spinning reserve for system security.[5] However, the system proved to be not robust enough and failed after a relatively short life. It has been replaced with a 1.6 MWh "advanced lead acid technology" battery.[6] Quote
Its a proprietary system; meaning you can pay if you want the details.
The 2003 battery storage upgrade cost $20000 dollars per Kw. Thats $20 per watt (no doubt Austrailian which used to be just about the value of Canadian dollars. Putting subsidies and grants into perspective with the former Sask Power renewable enegy grant of 61 cents a watt for solar wind and mmaybe two Net Metering Grid Tie flare gas generation projects; that's a 30 time greater subsidy than the Sask Power incentive that had to be cancelled because everyone's power rate was set to go up by what were considered to be too unacceptable amounts.
Austrailia appears to be the financing body for the island. There were $18 Million dolar disbursement; figures of $2500 per annum costs for one part of project and all for a pretty small scale electrical supply (in terms of other utility grids)
Not in any way should this to be construed to denegrate their efforts to get a better electrical supply. Still haven't found what the cost per Kwh was before and after these upgrades; and how any debt has been retired or forgiven
I will check on where King Island actually is; and what the "Chamber of Commerce" has for attractions and agicultural/industrial development etc.
Help us out mallee....its a small world.
Comment