Tag Archive | "kilowatt hour"

Types Of Batteries

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Alternative sources of energy are very vital. The importance of alternate or backup power is realized when one is faced with the power outage. Batteries are considered to be the perfect backup plan for the domestic and commercial users. Many vehicles and other products rely upon the batteries.

These batteries can be connected to many other systems and processes and have truly become the power behind today’s progress.

Types Of Batteries

There is a wide range of batteries available in the market. The manufacturers are producing all kinds of batteries that vary in size as well as the capacity to produce power. A few of the most common batteries in market are discussed below:-

Lead Acid Battery

This battery has proven to be the best for the deep cycle users. The users searching for the renewable energy can get following benefits from this battery:-

  1. Greater life expectancy
  2. Less price per kilowatt hour of storage
  3. Easy and user friendly maintenance
  4. Easy market availability

Marine Battery

This is one of the common types of battery that is used by the people new in the field of renewable energy. It is similar to a car battery but is slightly better than that. However it is not recommended for use as deep cycle battery. Such a battery has higher cranking capacity due to the large number of plates but it has lesser charge and hence not suitable.

The larger the number of plates means that the plates are thinner and hence their charge holding capacity is also decreased. As a result they are not efficient for domestic use.

Golf Cart Battery

This is a better choice when one has to select a vehicle battery. The specially designed battery gives following benefits to the users:-

  1. The plates are much thicker and they have been designed to be always over 50% depth of discharge.
  2. The long life of the battery as a golf cart battery cart battery should last 3 two 5 years in renewable energy application.
  3. A typical golf cart battery comes in a 6 volt 220 amp hour ratings. So one needs two batteries to get 12 volts @ 220 amp hours
  4. It is considered as a liquid cell battery as there is no need to replenish the electrolyte used up in the battery.
  5. The liquid battery needs to be checked once a month to ensure maintenance but it is not applicable to golf cart batteries.

Liquid Cell Batteries

These are the common type of batteries used in cars etc. They are based on the principle of chemical reaction used to produce the current. They require regular maintenance to ensure that the contents and battery is free from the dust and other contaminants. In addition, one has to remain careful while opening the dust caps of the batteries because the dust may fall in the battery and hinder its performance. Also one should use clean hydrometer and funnel.

A few of the drawbacks of the liquid cell batteries are listed below:-

  1. These batteries produce hydrogen gas alongwith a corrosive acid mist when they are being charged or discharged. Therefore they must be installed in a well ventilated and non populated area.
  2. You have to ensure that the area is free from the sources of ignition. Your best choice is to use a sealed box with a ventilation pipe leading to the outside air.
  3. Periodic maintenance is the necessity with liquid cell batteries. You have to check the level of the electrolyte once a month. If you do not check it and the level falls below, the performance of the battery is disturbed.

Advantages Of Wet Cell Battery

The biggest advantage of the wet cell batteries remains their price. They are upto three times cheaper than the dry batteries. In addition, it is easy to charge the wet cell battery as the overcharging is not dangerous.

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Reducing Electricity Bills By Solar Powered Systems

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There is a financial incentive for businessmen in installation of solar powered systems in their businesses and work places to generate electricity. The monetary benefits come in the form of rebates and tax relaxation. Also, with advanced technology, solar energy is not used just to heat up water, but is actually converted to electricity. Thus, lights, computers and other appliances could be run from energy derived directly from the Sun.

One example of the financial incentive exists in the state of California, which estimates $4000 per kilowatt of rebate and 15% tax credit. Generally, people are encouraged to use solar powered systems because of numerous reasons, like less pollution from power plants, saving the reserves of fast depleting non renewable resources like coal and oil from earth etc. Also, the person will help lessen his ‘carbon footprint’ on the earth.

How Does A Solar Powered System Work:

How Does A Solar Powered System Work

There is a photovoltaic cell that collects sunlight, and is tilted and faced due south to enable it to collect the maximum amount of energy. It is installed on a rooftop, ground, pole, or any suitable place to avail maximum exposure to sunlight. The DC current thus produced is fed to an inverter which produces AC current, which is the form of electricity provided by the power stations to houses and workplaces. The inverter synchronizes the current with that produced by the grid, and supplies it via the utility meter to the grid.

Connection to The Power Company:

The electricity is supplied to the grid and so the utility meter may run slowly, indicating less energy used from the power station, or even backward, indicating energy being supplied to power station. In a “Net Metering State” like California, the power company is supposed to pay the full retail price for the power produced by individuals.

Benefits Of A Solar Powered System:

They are easy to install with no moving parts that are breakable, no rigorous monitoring required, and no noise. They have a warranty of as long as 25 years. This means that even after the payback period (the period required to cover investment cost) has passed, it keeps running and yielding profits.

Need Of Batteries For Solar Powered System:

If there is a power failure from the utility company, there is no electricity supplied to the grid by the inverter to save any person from an electric shock in the event the utility company sends a lineman for maintenance or repair. With a battery powered system, backup energy is supplied to the individual’s company or work place; otherwise there will be no electricity available for the person’s business. So depending on the type of battery, electricity could be supplied for hours, and even days, however, with the battery powered system there is a reduction in efficiency of electricity produced. So, there is less profit made by selling electricity to grid, as well as additional cost of replacing the battery pack every 5 to 6 years.

Determination Of Daily Electricity Usage:

Before installation, the business owner should know the power consumption of say, his workplace, by asking the utility company about the power consumption in kilowatt hours per day or per month. Read the full story

Important Things about Solar Trackers

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Solar power energy is serving for a variety of purposes. In the past few years, more forms of solar power energy have become popular among green people. These consumers also directed towards ways by which they can keep the track of the performance and efficiency of their solar power system. One of the most popular ways to become more efficient when operating a solar power program is to utilize a tracking base. Following are the few important things about running a photovoltaic system:

Advantages of Tracking

Advantages of Tracking

You can enhance the energy production with the tracking because tracking-arrays get more sun power when it is at its peak. This allows the installation of a smaller array and reduces the required array footprint that is beneficial for sites that do not have much space available. Tracking array can also be beneficial for the kits with wide open solar access. The sun power that is received during early morning and late hours can be sufficient, especially during low summer times during which at most northern latitudes, the rise in the northeastern region and sets in the northwestern region.

Appropriate Applications of Tracking Array

Surplus power is only advantageous in the case when can easily sell it or store it for future use. In this case, a utility connected system with wide open sun window can be very beneficial option for a tracked array. It is because every kilowatt-hour will be utilized. Read the full story

How To Get Cheap Home Wind Power?

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Is there any chance to get inexpensive home wind power? Initially, it would not be an economical option for you, if you are purchasing a domestic wind turbine or creating one yourself. But it would prove to be good in the long run. According to the American Wind Energy Association, you can reduce your electricity bill by 50 to 90 percent through a wind turbine. For nine months of the year, electricity-only homes can have can have utility bills ranging from $8 to $15. In the northern areas where less use of air conditioning is involved, the utility bills can be low through out the year.

Factors Determining How Economical Home Wind Power Can be:

Factors Determining How Economical Home Wind Power Can be

Those factors that determine that how inexpensive and economical home wind power can be are the initial purchase and installation costs, average wind speed at your property site, amount of electricity used and so on.

Advantages Of A Domestic Turbine:

A domestic turbine is the main apparatus for those who are requiring inexpensive home wind power. Basically, it is the smallest form of the large-scale turbines which we observe are hanging over the landscape. Read the full story

Businessmen Who Are In Need To Decrease Or Eliminate Electricity Bills

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With each passing day businessmen across U.S, who were exhausted by paying soaring charges of electricity, are making use of generous discounts& excise credits after installation of Solar powered systems for domestic and business use.

Many states across U.S have taken an initiative regarding this. For instance, California   has tendered discount of $4000 per KW of solar power & a 15% excise credit with increased downgrading option.

Contrast to yesteryear’s solar energy systems, which only helped in production of hot water, the new systems in reality generates electricity. Dependable power to function computer systems, cash registers, pumps, cooling, lights & numerous other kind of tools, all this from the power generated by the sun & that too free of cost.

Will I Need to disengage from My Electricity company?

Will I Need to disengage from My Electricity company

It won’t be necessary to disengage from your electricity company, you will stay connected to them, but you wouldn’t need to use the electricity produced by the, Instead, your business will become a self sufficient energy producer.

Solar powered systems have nearly reached play & play clarity. They are nearly noise free, no decisive monitoring & no parts that may rupture if moved. Solar panels only take a seat under the sun and that’s all that is required to generate energy. As a matter of fact the average solar panel also carries a 25 years warranty and majority of time they are predicted to last twice as much.

Technical Description

Refer to the details above that demonstrates configuration of a solar powered system. On the left if the Solar PV Array which is the energy gathering unit, this will be escalated on the ground, a post or roof top as demonstrated. To get utmost contact with the sun, point the array towards south and tilt it.

The gathered energy will then travel through the wire as DC to your power conversion unit, popularly known as an inverter and invert DC into AC.

The inverter will then orchestrate your AC current that it generates with the electricity companies AC current which will travel via your utility meter and reach the grid. Your actual utility meter will then work unhurriedly as you are generating power, and a lot of times run backwards. If you reside in a “Net Metering State” like California your power supplying company will be obligated to pay you for the production of power.

Are Batteries required for Solar system?

To use batteries or not is something of a personal choice. Battery backed and Battery less systems, both the systems will give the excess energy produced back to the electricity company.

When a power failure occurs then the distinction becomes evident. In a battery less system, if there is a power outage, the system will itself shutdown. There will be no power available  until the power company restores it.

Safety Concerns

This has more to do with safety than anything else. During a power failure if a lineman has been sent for repairing, it would be nothing short of dangerous to feed power, when the lineman is working with the mindset thinking that no power is available. For this reason only the system structure makes it unworkable in case of power failure.

The battery backed systems use a completely diverse design. Similar to battery less inverters, the solar panel will feed energy via the company meter until the company’s system is running normally, helping in bill reduction. Read the full story

Steps To Make Solar Power Generator

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Are you interested in making a solar generator within a budget of 350 USD? Then you have to follow the following instructions. The cost of the solar generator entirely depends upon the material that you use while construction. The solar generator will generate up to 100 watt-hour of electrical energy if the solar panel of 20 watt receives solar energy for more than five hours per day.

Important components of generator

Important components of generator

In this particular design that you are going to learn, we are going to use a rechargeable battery that can store more than 400 watt of energy.  First you have to pick a reliable solar panel that is rated at 12 volts. You can easily get such solar panel for less than 175 USD. You are suggested to get a charge controller of 4 amperes, which is readily available for 25USD. Battery is the most important factor of this design. Therefore, you should get a 32 amp-hour battery that is available for 60 USD.

Power inverter and installment of components

You can attain power inverters for less than 30USD. Next you are recommended to grab a voltage meter that is going to be used to monitor the load on solar generator. A wooden box or a plastic cooler are suggested to be used for the enclosing purposes. You have to drill a spot on the cooler to fit in the parts that are being discussed before.

Precise connections

The next step includes the connection of the insulated wires with the battery from the meter. Keep in mind that you have to connect the positive terminal first. Read the full story

What is Eco Air Conditioning?

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During summer season everybody tries to stay cool that can only be done via a good air condition. On the other hand, during winter season everyone expects to be warm. Using machines and electronics to go against nature has become a common thing and people don’t even think about it. In reality, people consume a great amount of energy for keeping themselves warm or cold and they leave impact on the environment. All these things directly or indirectly define how green are people.

Summer and Eco Air Conditioning

Summer and Eco Air Conditioning

Eco air conditioning can be an effective step from you towards being green. Eco air conditioning has various good features hat make it a preferred choice over conventional car conditioning.

Facts about Conventional Air Conditioning

Traditional air conditioning utilizes hydrofluorocarbons (CFC) that are destructive for ozone layer. Many companies have phased out CFC but still they are destructive for ozone layer. Air conditioning consumes a great amount of electricity that is generated with fossil fuels that harm the environment. According to careful estimations, a single air conditioning unit emits 1.34ibs of Carbon dioxide per kilowatt hour used. Air conditioning constitutes half of the amount that charged for the domestic electricity billing in the US. In simple words, air conditioning cannot neither be overlooked nor be mishandled.

Nature as Eco Conditioner

Air conditioning is inevitable in extreme weather conditions. People can make use of nature as an eco conditioner by designing their offices and homes eco friendly. Read the full story

Reduction Of Electric Bills Through The Use Of Solar Electric Systems

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Thousands of utility customers throughout the U.S. are fed up with the high electricity charges have taken the benefits of remarkable rebates and tax credits. These particular discount benefits and tax credits are accessible to those people who would install solar electric systems on their homes and businesses. For example, a cash rebate of $4000.00 per kilowatt of installed solar power and 15% tax credit is being offered recently by the state of California. These are different from the old solar systems of the past through which merely hot water can be produced, but these new systems in fact generate electricity.

Simplicity Involved In Recent Solar Systems:

In Recent Solar Systems

You have to stay linked to the power company, but in spite of just using the electricity produced by the power company, you have to become a separate power producer as well. Solar electric systems are now almost easy to operate.

Now a days, there is no involvement of serious check, no breakage of moving parts and also almost no noise. By merely placing the solar modules before the sun, they started generating electricity. The warranty of a typical solar module is about 25 years and in most of the cases they are anticipated to last double than the mentioned amount of time.

Construction And Working Of A Solar System:

There is an energy collecting unit known as Solar PV Array or Photovoltaic Array. It may be placed on the ground, on a pole or on the top of the roof. The array should be in the direction of south and twisted in order to get highest exposure to the sun.

The energy gathered from the sun is moved to the energy conversion unit in the form of DC or direct current, where it is inverted into AC or alternating current. The AC current generated by the inverter is then harmonized with the AC current of the utility companies which is then supplied to through utility meter and on to the grid.

Credit Given By The Utility Company:

You will not have to pay anything for the excess power produced by you, but in turn will receive credit from the utility company. Net metering laws have been passed in states. According to these laws, utility companies will in fact give out credit for that retail value of the power which has not been consumed. For example, if you produce surplus electricity in the month of June, then the credit given for over production will be carried forward to next months until the time it is fully consumed.

Efficiency Difference:

The option of using the batteries for your system depends upon your own will and there is the involvement of tradeoffs. Both solar systems whether battery- less or battery supported are able to sell the overproduced electricity that you generate to the utility company, although there are differences in the efficiency level of both the systems.

Functioning Of Battery-Less Solar System:

Battery-Less Solar System

These differences become apparent when there is some failure in the utility power. In case of power failure, a battery less system is designed in such a manner that it shuts down consequently. There will be no availability of electricity to your home until the time the electricity is reinstated back by the utility company. The reason for all this is the safety measures.

Suppose in case of power failure, the utility company has sent the line man in order to execute the repairs. Read the full story

Sample Cost for 10 kW Wind Energy System

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LIPA is popular in generating electric returns and it is the biggest electricity provider of the nation. It is known for renewable energy provision. It offers clean and sustainable energy products to customers who are more energy efficient and save money. It also gives the discounts, tips & tools for household appliance. LIPA offers Wind Electric System for your homes.

Backyard Wind Initiative

10kW Wind Energy System

This residential wind energy system is installed at the backyard of the house. It produces electricity which is more efficient and cheaper then hydro electric power. Use of wind energy and energy efficient technologies will:

  • Helpful for the environment.
  • Decrease fossil fuels consumption.
  • Less costly.
  • Installation of wind electric system saves money in the long run.

How It Works

  • It works in area where enough wind resource is available.
  • Tall towers are allowed by local zoning.
  • It works where you have enough space for Wind Electric System.
  • You have to conclude how much electricity you will need.
  • It is economical.

Cost of Typical Residential Wind System

Installation Cost ($6.00 per watt)                                                                   $60,000

LIPA discount for 1st 16,000 kWh (at $3.50/kWh)                                           (45,990)

Or 60% of total installed cost                                                                        (36,000)

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Step by Step Guide to Residential Solar Power System

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For the installation of a Photovoltaic Solar Energy System, firstly you have to check out that how much solar energy is usually absorbed by your panel which depends on the mean daily solar radiations for your area.

1. Calculating the Potential Solar Radiation Power

The average Solar energy obtained is about 4-5 kWh/m2/day, in most of the areas but in some areas it even reaches to 8.

Solar power

In order to check your area, please concern to this map which is provided by the National Renewable Energy Laboratory (NREL) Resource Assessment Program. In the units kWh/m2/day, where kWh stands for kilowatt hour, with “m” is the area of the absorber, for this case, the photovoltaic cell, with square meters. Where the solar panels work with the efficiency of ranging from 7 to 17%.

Solar Radiation (kWh/m2/day) X % of Solar Panel’s Efficiency (7%) = Tot, Power in kW a solar Panel (2m2) can generate Daily

Keeping in mind the above formula, your habitat consist of an average solar radiation of 4.5 kWh/m2/day in the surface area of about 1m2 of photovoltaic cells, then the resultant can be 0.315 kWh/day (315 Watt/day) with the efficiency of about 7% of an average solar panel.

2. Determine Your Average Energy Usage

Once you come to know that how much solar energy you are obtaining from the sun then you can calculate that how much energy you need on your recent energy involvement.

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