The cost is free, the energy comes from the Sun (trapped by plants). However, the price of biomass (what you have to pay for it) is not fixed and varies from country to country, place to place and what the biomass consists of.
$1.00 per month
Let us consider that Watts means Watt-hours per hour. So a battery charger that consumes 15 Watt-hours per hour will consume 15x24 Watt-hours per day. And at 0.06 dollars per 1000 Watt-hours the cost will be 15x24x0.06/1000 or just over two pennies per day.
it cost $100 It costs about 2000$ for every kW of output power....... So if you have a plant that has an output of 5mW of energy it will cost you 10 mio. $
I thick that Biomass fuels
25 watts * 24 hours = 600 watt hours = 0.6 kwh {1 kilowatt hour = 1000 watt hours} 0.6 kwh * (0.085156 per kwh ) = 0.0510936 or about 5.1 cents
ahm...depends on the cost per watt charged by your local provider... how much is it?
A 0 Watt bulb does not consume electric power so the cost is zero.
$1.00 per month
Let us consider that Watts means Watt-hours per hour. So a battery charger that consumes 15 Watt-hours per hour will consume 15x24 Watt-hours per day. And at 0.06 dollars per 1000 Watt-hours the cost will be 15x24x0.06/1000 or just over two pennies per day.
In the UK its £1.06 per watt so a 3.96 kilowatt system of panels would cost 1.06 * 3960 = £4197.6 That is just the prices of the panels and does not include 5% VAT or installation costs.
I thick that Biomass fuels
it cost $100 It costs about 2000$ for every kW of output power....... So if you have a plant that has an output of 5mW of energy it will cost you 10 mio. $
25 watts * 24 hours = 600 watt hours = 0.6 kwh {1 kilowatt hour = 1000 watt hours} 0.6 kwh * (0.085156 per kwh ) = 0.0510936 or about 5.1 cents
It depends on your location.
The wattage measures an instantaneous power consumption of a load. You get charged by Watt Hours. A typical cost per 1000 watt hours might be around 12 cents.
They cost about $3-$4 per watt. You can't measure it in kilowatt hours unless you know where the panel is.
At 10 cents per kWh (Kilowatt hour), one 100 watt incandescent light bulb ran for 24 hours straight will cost 24 cents a day. $7.30 a month, $87.60 a year. kWh = (Watts Used * Hours per Day * Days per Month) / 1000 Cost per Month = kWh * Cost per kWh