Your Questions About Solar Power

Donald asks…

How can we bring solar power energy to our streets?

I was having a debate with my friend about ways to make the environment better and to have a better energy reliance than oil. One idea that was floated was to have every street lamp based on solar power (with backup electrical grid power in case it rains or something) anyway, here was the debate which we need your answers to: Is it better to have a solar panel on each street light OR Is it better to keep the street lights as they are and just install solar panel hubs around the city that feeds into the electrical grid?

ssadmin answers:

Until compact onsite electrical storage becomes practical, it's better to have centralized solar power stations feeding power to the electrical grid, because 1) the wiring to the lamps are already in place and/or are necessary anyway for times of no sun, and 2) greater efficiencies and easier maintenance is possible at large solar power installations than with thousands of small solar collectors. However, independent “off the grid” solar powered devices is the trend. For example, through fuel cell technology, compact solar energy storage may become possible and practical, in which case high efficiency street lamps may go off the grid, thereby reducing wiring needs.

I came accross a new, proven and tested home made wind power system and solar power system which eliminates our electricity bills. It was written by a Renewable energy enthusiasts Michael Harvey the diy called Earth4energy. You can get your copy to save energy and help environment while eliminating your power bills. Get it from here: http://homemadeenergyreviews.blogspot.com/

Jenny asks…

Anyone can help me how to find solar power for home usage?

I want to know more about solar power that can be used in individual homes, where do we get it and what about the cost?

ssadmin answers:

Solar electricity may or may not be a financial win, depending on where the home is located.

The typical residential system today is installed alongside the grid (“grid-tied”), and seamlessly works with the grid to provide whatever power the house requires. If the solar is putting out more than the house needs, the extra is sold to the power company. When the solar is not putting out enough (clouds or at night), the power company supplies the balance. In this way, no batteries are required to store energy for night usage.

Your best move is to gather about a year's worth of electric bills, and call a local solar installer, who will give a free quote on what it takes. If there are no installers nearby, that's a clue that your area may not be good for solar.

One final caution – beware of scam sites selling information on how to build your own panels. The advertising looks great, but the reality is far different.

Sandy asks…

How much space and time is required to build A single Nuclear reactor versus a solar power Plant?

So I would like you to give me the cost, the time to build the KW/h it produces and the space a nuclear reactor requires. As well as the same for any single solar power plant.
(All the stats of each have to be from a any, but all have to be from the same one)

It's self-directed homework that's due in today, but I just wanted to know the answer in the end.

ssadmin answers:

This is a loaded question with many right answers. I'll take a stab at it though.

The largest proposed photovoltaic power station in the world is in Victoria, Australia and is estimated to produce 154 megawatts. It will utilize 2,000 acres of land.

Conversely, the Kashiwazaki-Kariwa nuclear station in Japan is the largest nuclear power station in the world. It produces a little over 8,000 megawatts and utilizes 1,037 acres of land.

Using these two extreme examples, nuclear power produces roughly 100 times more energy per acre than solar energy. Arguably, nuclear power stations are still cheaper to construct than solar energy stations. The cost of photovoltaic cells is still high as technology hasn't improved enough to reduce their cost.

There are many other factors that come into play that complicate the decision between which is ultimately the cheaper solution for energy production. There are factors like cost of land, environmental impact of land use, longevity of the facilities, long-term environment effects, and so on.

I can't answer how much each costs to build and the time for construction. Let us know what you came up with.

Steven asks…

Would you want a solar power plant near your home?

List some good reasons you would/wouldn't want a solar power plant near your home. This is for a school project so please list some good answers.

ssadmin answers:

I would like a solar power plant FOR my home. I have no problem with such things nor would I complain about a ‘wind farm'.
The current coal-fired plant (about 5 miles from me) pollutes every day. It is a “clean burn” plant but the operators seem to have found a way to conceal their pollution. I can see the yellow haze being emitted in the steam plume from the cooling towers (where nothing but steam is supposed to be) on sunny days.
I've told the local EPA about that but nothing has been done. Grift and bribery I would guess.
Anyway, the solar and wind plants are clean and efficient when operating and fueling them does not require deforestation or mining.

Paul asks…

How can i synclonize solar power with inverter?

I want to connect my inverter to solar power system. can somebody tell me?

ssadmin answers:

There are 2 distinct situations, each one is using a different type of inverter

1. For homes connected to the grid the inverter is connected to the solar panel on the DC side and the DC voltage and DC current rating should match. The inverter AC side is connected to the home and to the grid (power lines entering the home). The inverter synchronizes to the grid frequency (60 Hz in the USA). In essence the home is fed from a combination of the inverter power and grid power. View this link http://www.solar-energy-for-home.com/grid-tie-inverter.html
2. For off grid homes (not connected to power lines) the solar panel is connected through a charge controller to a bank of storage batteries. The batteries are connected to the DC side of the “pure sine inverter”. The DC voltage rating and current rating of the battery and the inverter should match. The inverter has a self synchronization to AC correct frequency (60 Hz in the USA). View the link http://www.solar-energy-for-home.com/pure-sine-inverter.html

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