Tag Archive | solar power home system

Pros and Cons of Residential Solar Energy System

Harnessing the power of the sun’s ray to create energy to power our house is very appealing. But the question is, “Is everything about solar energy good?”

Looking at the current price of fossil fuel-based electricity, it is quite impractical to convert into solar energy system. However, with the growing concern on the state of the earth, there is really a need to find other means of energy aside from what power plants are using right now. Where do you place yourself?

Whether you are an advocate of clean energy or simply care about where your finances go, looking at the pros and cons of residential solar energy system will help you decide on whether to convert or not.

Pros

Solar energy is free. Did you know that the earth absorbs 174 pettawatts of solar radiation? This means that we have more than enough source of free energy to power every house in the world. Unfortunately, most of our energy is still drawn from oil, gas and coal. But in recent years, there is a steady increase of demand for alternative and renewable energy like solar power. It is estimated that the demand for alternative sources of energy will increase by 53% between 1999 and 2020.

Solar energy is clean, renewable and sustainable. Because the energy created from the sun’s rays does not produce byproducts like those from fossil fuel power plants (sulfur dioxide, nitrogen oxide, mercury or carbon dioxide), it does not contribute to pollution. Accordingly, the increase in the use of solar energy and other alternative forms of energy will decrease the demand for greenhouse gases-producing power plants.

The price of photovoltaic cells is steadily decreasing. The demand for solar panels has risen by 57% in the United States in 2007 and is steadily increasing on a monthly basis. The increase in demand results to the improvement of solar technology as a whole. The prices of photovoltaic cells have declined on the average of 4% every year over the past 15 years.

Solar panels can be installed on most rooftops, eliminating the problem of finding a suitable place for installation. Solar panels require little or no maintenance. The original photovoltaic cells technology is used for most satellites orbiting our earth today which are not maintained at all. Many solar panel manufacturers give 25 to 40 years warranty on their products.

Because most areas of the country receive a substantial amount of sunlight throughout the year, solar panels can be installed anywhere.

Many states in the country give tax credits and rebates to households who want to install solar energy system. Check with your state government the cost of these incentives.

Cons

While the prices of PV cells are in constant decline, the cost of installation is substantially high compared to the current electric cost. But the good thing is, after your initial cash out, you don’t have to pay every month on electric bills for the rest of your life.

On areas cities and areas with heavy pollution problem, solar energy may not work as fine. Weather can also affect the efficiency of solar energy. If it is raining, overcast weather or if there is a hurricane, the solar panels’ efficiency is decreased.

You are only producing energy during day time.

These are general pros and cons you might encounter when considering the conversion to solar energy system. It would be best if your decision is based on location, cost, budget, rebates, tax credits and practicality.

Tesla And Panasonic Solar ‘Gigafactory 2’

Tesla releases more details about its Solar Roof agreement with Panasonic at ‘Gigafactory 2’

In order to bring to market its new series of ‘Solar Roof’ products, Tesla announced last year that they are bringing together a lot of technologies under one roof at their newly acquired factory in Buffalo, now known as ‘Gigafactory 2‘. It includes tech developed in-house by Tesla, some tech by Panasonic, and tech from SolarCity and its subsidiaries.

The deal is somewhat complicated with a lot of moving parts, which now clearly shows why Elon Musk wanted Tesla to acquire SolarCity since it will simplify the complicated partnership.

 

Through Tesla’s acquisition of SolarCity, they inherited an agreement with the Research Foundation for the State University of New York for the construction of an approximately 1 million square foot manufacturing facility, which is now mostly completed.

The deal is under a Build-to-Suit Lease model. Tesla explains the deal in a SEC filing released this week:

“The Foundation will cover (i) construction costs related to the manufacturing facility in an amount up to $350.0 million, (ii) the acquisition and commissioning of the manufacturing equipment in an amount up to $348.1 million and (iii) $51.9 million for additional specified scope costs, in cases (i) and (ii) only, subject to the maximum funding allocation from the State of New York, and we will be responsible for any construction and equipment costs in excess of such amounts. We will own the manufacturing facility and manufacturing equipment purchased by the Foundation. Following completion of the manufacturing facility, we will lease the manufacturing facility and the manufacturing equipment owned by the Foundation from the Foundation for an initial period of 10 years, with an option to renew, for $2 per year plus utilities.”

That’s a pretty sweet deal, but in return, Tesla has to achieve a series of milestone or otherwise it will have to pay penalities.

Here are the main milestones listed in the filing:

  • employing a certain number of employees at the facility, within western New York and within the State of New York.
  • spend or incur approximately $5.0 billion in combined capital, operational expenses and other costs in the State of New York over the 10 years following the achievement of full production.

What is full production at this new factory?

According to the same filing, Tesla expects “approximately 1 gigawatt annually beginning in 2019.” In the past, SolarCity has referred to the factory as having a 1 GW capacity with potential for up to 5 GW, but it looks like they are sticking to 1 GW for now.

The production of solar cells to make modules and tiles (for Tesla’s solar roof) will use technologies developed by Tesla (Glass), SolarCity’s Zep and Silevo (modules and connections), and Panasonic for the cells and the manufacturing.

Tesla explains the agreement in the filing:

“In December 2016, we entered into a Production Pricing Agreement: Phases 1-3 (the Phase 1-3 Agreement) with Panasonic Corporation, Panasonic Corporation of North America and Sanyo Electronic Co., Ltd (collectively, Panasonic).  This agreement provides that Panasonic will manufacture custom photovoltaic (PV) cells and modules for us, primarily at Gigafactory 2, and that we will purchase certain amounts of PV cells and modules from Panasonic during the 10-year term, with the intent to produce PV cells and modules totaling approximately 1 gigawatt annually beginning in 2019.”

Panasonic said that it plans to make a $250 million investment in the manufacturing effort.

This deal is somewhat similar to the deal Tesla and Panasonic have at the Gigafactory 1 where they collaborated on the development of a new battery cell, which Panasonic ultimately ends up being the manufacturer under a long-term agreement for Tesla to purchase the output.

In the case of Gigafactory 1, Tesla uses the cells to make its battery packs for cars, Powerwalls, and Powerpacks, while at Gigafactory 2, Tesla will use the cells to make solar roof tiles and modules.

Tesla still expects to start production of the solar roof at Gigafactory 2 in “summer 2017”. The expectations for the product are high since Musk said that Tesla’s solar roof will cost less than a regular roof – even before energy production.

 

Solar Power and Global Warming

Who wouldn’t want to get a lifetime supply of free electricity? Well, that can be realized only if you install a dependable and durable solar power system. Solar power is free but only after the installation of the power system. Conventional electricity comes from the burning of fossil fuels that in turn contribute to global warming. The effects of global warming are quite evident nowadays. Many people are now interested in saving the environment to prevent the devastating effects of pollution. One way to decrease pollution and environmental concerns is through the use of solar power.

Solar power can be used in different ways especially in households. You can use it for lighting, for cooking, for heating the house, and many others. Utility bills are very expensive and you can cut it down by installing a solar power system. The system has solar panels that collect sunlight and converts the energy of the sun into electricity. You can readily use the electricity or it can be stored in the batteries.

The sun’s raw energy can’t be used to power homes and it needs to be converted first through the inverter. If you have a solar powered house, you can make use of renewable and clean electricity. Even if you can’t cut off your traditional electrical supply, you will be able to reduce the consumption thereby helping the environment. Electricity is generated by burning fossil fuels that contribute to pollution and global warming. The supply of fossil fuels is also decreasing and the world might face electricity shortage soon if they don’t conserve energy. It would be best to start using solar power now.

Through the efforts of SEPA (Solar Electric Power Association), the public is made aware of the many benefits of solar powered homes. This is the best time to make substantial efforts to save the environment. Solar power can’t possibly replace conventional energy sources today but who knows. If the technological advancements can help in the enhancement of solar power systems, perhaps in the near future the whole world can go green.

Pollution is widespread and it poses a great threat to the world. By reducing traditional electricity consumption, you can also lessen pollution. Solar power can provide clean, renewable, and free electricity. It doesn’t produce harmful emissions. You can enjoy free electricity as long as the system is working properly and as long as the sun rises.

The solar power systems are not that expensive these days. In fact, you already get a solar power kit for as low as $200. Still, the large solar panels are expensive. The federal government in the US offers incentives, loans, grants, rebates, and other financial options to help homeowners in installing a power system. Take advantage of these financial options so that you can start helping the environment.

Solar power systems can serve your home for about twenty years when properly maintained. It’s like an entire lifetime if you start now. If every home around the world patronizes solar power, global warming can be greatly reduced and Mother Nature can heal herself. Try to learn more about solar power and if you can afford to install a system at home or in the office, don’t hesitate because you’re doing the world a favor and you also get a lot of benefits.