Énergie alternatives. Énergie verte, et renouvelable. Générer de l'électricité gratuitement pour votre maison! Commencez dès aujourd'hui à être moins dépendant de l'énergie fossile pour moins polluer et sauver l'environnement. Utilisez l'énergie renouvelable et non-polluante! Convertissez-vous à l'énergie solaire et l'énergie éolienne. Discover how to get Free Electricity from your Telephone Line. Build yourself A Zero Point Magnetically Powered Generator and more!
dimanche 26 novembre 2017
Solar power technologies pros and cons
Controversy over alternative energy
The costs of solar energy(part 4)
Photo-voltaic solar panels system on your households who produce electricity are photo-voltaic cells, connected together to a solar module, who transform solar radiation into electricity. Generally, several modules are grouped together to form an installation. They are usually installed on the roof so that the slope is sufficient for the snow to slide on the walls of glass and to better capture the brightness of the Sun.
DC power generated from solar radiation is used to power a device or recharge a battery. The power must first go through an inverter before being converted to 110V and routed to the house. Generally, people are connected to the electricity grid and work with a battery, because they can get supplies from the electricity company if their needs are not met by solar energy. Off-network users use batteries that provide power, regardless of brightness and variations in demand. In eastern Northern-America, these batteries provide a stable diet during the shorter days of autumn and early winter.
All that consumes electricity can be powered by photo-voltaic panels, namely lighting, appliances, computers, small electrical appliances. However, for anything that generates heat, such as heating the house and water, it is better to use another technology: solar thermal energy. Indeed, it is more efficient and less expensive to generate heat with this technology.
By cons, the costs are very important if you have the idea of converting your single family house into solar energy. But the investment can be worth the cost, even in Quebec. In Quebec, it is estimated that electricity produced with photo- voltaic panels cost six times more than the price of residential electricity. A kWh produced with solar photo voltaic energy costs about $0.42 compared to the $0.07 per kWh requested by Hydro-Quebec.
Even if Hydro-Quebec does not go to the residence or if the cost of connection to the network exceeds $15,000 to $20,000, it is advantageous to install solar panels. It all depends also on where you live, how much you pay for your electricity in kWh in your state or province. How much you spend on electricity each month and how much you think you'll be saving with your solar panels system each year...
For example, the average annual electricity use for Canadian and U.S. households is 11,000-kilowatt hours (kWh). Multiply that by the national average electricity rate as of September 2016 ($0.1287 per kWh) and you'll find that the typical American family is spending over $1,400 a year on electricity alone.
Then, you'll have to consider also the volatile nature of electricity prices, determine what utility rates will be in years to come. When you compare the cost of utility electricity with solar home, you should keep in mind that you can expect electricity rates to increase annually. Over the past decade, national electricity costs increased by 2.2% per year.
Average solar panels installation:
System size: 5 kilowatts (the national average)
Electricity demand: 11,000kilowatts-hour per year (national average)
Utility rate inflation: 2,2%
Percent needs meeting by solar panels: 84%
Ownership of the solar panels is assumed
The annual solar energy production of solar systems:
3kW 4,260 kWh
4kW 5,680 kWh
5kW 7,100 kWh
7kW 9,949 kWh
8kW 11,360 kWh
10kW 14,200 kWh
12kW 17,040 kWh
15kW 21,300 kWh
Cost of electricity in kilowatt per hour:
Quebec: 7 cents kWh
Toronto: 14 cents kWh
Moncton: 12 cents kWh
Chicago: 17 cents kWh
New-York: 29 cents kWh
Boston: 30 cents kWh
So, if you live in a place like the province of Quebec, it'll take you as 4 times longer to get your return of investment on your solar panels system compare with how much you pay for your electricity bills in Boston, Massachusetts or in New-York.
Examples of costs for equipment (installation included)