Showing posts with label energy. Show all posts
Showing posts with label energy. Show all posts

Bill Gates thinks big, spends big in push for energy innovation

Microsoft co-founder Bill Gates is investing more of his own time and money in the search for clean energy and solutions to climate change.

Gates is moving into a third arena, after software and philanthropy, and is using his Kirkland-based incubator, BGC3, to fund related science.

"The more I learn about this problem, the more I see it as super critical," he said. "We need a breakthrough; we need multiple breakthroughs."

Gates spoke Tuesday to a sold-out audience at a fundraising breakfast in Seattle for the nonprofit Climate Solutions.

Gates said he has been meeting with energy experts, reading up on the latest science and investing in startups, such as Bellevue-based TerraPower, which is designing a new kind of nuclear reactor intended to run for decades on depleted uranium.

He also started the American Energy Innovation Council with a group of senior corporate executives, which has tried unsuccessfully to persuade U.S. political leaders to double government funding for basic research.
Science and market-based technology solutions have the potential for huge advances, Gates said.

"The capitalistic format ... is the main area where energy innovation is going to take place," he said.

Gates is unlikely to make energy a focus of the philanthropic work of the Bill & Melinda Gates Foundation, which concentrates on needs of the poor, but certain things like biofuels for small farms in Africa or Asia might play a role.

His growing involvement in clean energy hasn't been without controversy.

He rankled some with comments that appeared dismissive of small-scale renewable energy at a conference last week in New York.

"If you're interested in cuteness, the stuff in the home is the place to go," he said in an interview with Wired Magazine. "If you're interested in solving the world's energy problems, it's things like big [solar projects] in the desert."

Gates might not give adequate emphasis to less exciting options, such as improving energy efficiency or rapidly deploying existing solutions, said KC Golden, policy director at Climate Solutions, but his focus on technology innovation is badly needed.

"Not surprisingly given his background, that's his primary emphasis," Golden said in an online conversation after the event. "It's not everything that needs doing, but it's great he's doing it."

Golden appreciates Gates' ability to think big.

"I want to participate in a real revolution, not make futile gestures," Golden said. "That's why retreating back to just private and local action alone won't work."

In his own speech, Golden acknowledged that even if the U.S. reduced carbon emissions to zero, the world would still be "swamped by just a few months of growth in the Asian economy."

Profitable solutions that can be applied globally are needed.

"What we can do is pioneer a new path to prosperity that works for us and billions of people across the world," Golden said.

Gates had some critical jabs at politicians, saying the optimism he feels when meeting with scientists fades when he thinks about "the political elements that should be in place" by now, such as pricing for carbon.

"The lip service that has been paid to energy innovation over the last few decades has been disappointing," he said.

The Energy Innovation Council's recommendations include establishing a national energy plan with concrete and measurable energy targets that various technologies and companies could compete to reach.

In making the case for increased government support for basic research and development, Gates said he and other business leaders met with President Obama.

"He said nice things, and I think he meant them," Gates said. "In a normal fiscal environment we probably would have been successful."

Still, Gates added that "I'm kind of stunned we can't get more bipartisan view on this R&D piece. It's about jobs and innovation."

While China has surged ahead in some areas, such as solar-panel production, the U.S. remains dominant in the power to innovate in the sciences, Gates said.

Innovation thrives where the top universities and best environments for high-risk startups are.

"I know of 100 great new energy ideas," Gates said. "I'd say 70 percent of them are based in the United States, even if they are looking at doing some manufacturing [in China]."

China is a necessary part of the solution because it's a much bigger market for energy than the U.S., he said.
Yet scientific innovation is an area where "the world counts on America to do well."

At the same time, it's important to take advantage of "practical, real-time solutions where we live," said McKinstry CEO Dean Allen, another speaker. About 70 percent of electricity produced in America goes to buildings and other physical infrastructure, Allen said. "What we've learned is 50 percent of the energy our customers use in their facilities is pure waste."

Eliminating energy waste from commercial and government buildings alone could cut emissions at a level equivalent to eliminating 200 coal-fired power plants, he said.

Allen raised a note of caution about too much reliance on "spectacular breakthrough technologies" as silver bullets. Much like reform in education, he said, "it's often not best to wait for Superman."

Seattle Times business reporter



Have you got the flare for Solar Power?

Following up my look into hydroelectric power on a personal scale, I’ve decided that next on my list for a detailed examination is Solar Power. It seems an obvious point that most people will want to know about this kind of technology to supplement their electricity, (that means electric power, electric radiators, etc...) so I will attempt to tackle the more pervasive issues in this field, such as how can you effectively produce this kind of energy on a small scale? Is it of any use in a place as devoid of sunshine as the UK is?! What are the uses of solar powering? These questions and more will be tackled in this blog post.

Ok, so sticking with the previous posts format, let’s start with the basics. Solar power is by far the Earth's most available energy source, easily capable of providing many times the total current energy demand.

At its most basic, solar power is the conversion of sunlight into electricity. This can be achieved in two primary ways. These are directly using photovoltaic’s (PV), or indirectly using concentrated solar power (CSP). PV converts light into electric current using the photoelectric effect, whilst CSP uses lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. (I’ll explain both in more detail later).


These systems (especially CSP) can be built on massive scales. The 97 MW Sarnia Photovoltaic Power Plant in Canada is the world’s largest photovoltaic plant. Commercial concentrated solar power plants were first developed in the 1980s, and the 354 MW SEGS CSP installation is the largest solar power plant in the world and is located in the Mojave Desert of California. Spain also boasts some impressive plants, the Solnova Solar Power Station (150 MW) and the Andasol solar power station (100 MW) in particular.


Photovoltaic 

PV is a device which generates electricity directly from visible light by means of the photovoltaic effect. In order to generate useful power, it is necessary to connect a number of cells together to form a solar panel, also known as a photovoltaic module. The nominal output voltage of a solar panel is usually 12 Volts, and they may be used singly or wired together into an array. The number and size required is determined by the available light and the amount of energy required.
 
Concentrated solar power

CSP systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. The concentrated heat is then used as a heat source. A wide range of concentrating technologies exists; the most developed are the parabolic trough, the concentrating linear Fresnel reflector, the Stirling dish and the solar power tower. Various techniques are used to track the Sun and focus light. In all of these systems a working fluid is heated by the concentrated sunlight, and is then used for power generation or energy storage. The diagram here shows how one type, a trough, works. The pipes and arrows represent the working fluid. This is heated when the sun’s rays are reflected from trough, thus giving a higher thermal energy for the fluid leaving. 

Personal use
So there are the principles of solar power. But how can this work on a personal level for the home owner? Well, most small, personal use systems will involve the use of PV’s. The diagram on the left shows the basic principles of solar power for the home.
 
Types

This highlights the fact that you can not only use the available electricity for your own home, but you can sell back any excess to the national grid. This is maintained in a Grid-connected system. In this system, the solar array is connected to the mains. Any surplus power is sold to the electricity company, and power is bought back from them when it is needed.

In a Stand-alone system, however, this is not possible, as this means you are not connected to a grid. Therefore storage of energy is needed. In this type of system the usual choice for energy storage is the lead-acid battery. Bear in mind, the number/type of batteries is dependent on the amount of energy storage needed.

Should you go Solar?

One of the first things to consider is, of course, the source of energy itself. Just as with hydro-power, this type of power generation is site-dependant; no sun=no power. So some levels of sunlight are necessary. 

So, to decide if you can go solar, and what system to use, calculating Insolation is necessary. To be able to make calculations in planning a system, the total amount of solar radiation energy is expressed in hours of full sunlight per m². One hour of full sun provides 1 kWh/m² (the solar energy received in one hour on a cloudless summer day on a one-square meter surface directed towards the sun). Insolation, or sunlight intensity, is measured in equivalent full sun hours. One hour of maximum, or 100%, sunshine received by a solar panel equals one equivalent full sun hour. The easiest way to measure your solar power needs however, (for those of us who don’t speak “maths”) is via an online calculator, such as at Renewable Resource Data Centre. You enter the number of kilowatts your theoretical system produces and it will tell you how much solar radiation is available throughout the year where you live and how much electricity that turns into.

Next to consider is the initial start up cost. Whilst these are relatively lower these days, (some can be bought for less than £500/$812 now) it is still a relatively costly procedure. However, these initial investments will pay off in the long run, normally within 6 years. 

Whilst finances are paramount for some people, others consider the environment. It was said that the amount of emissions saved from using solar was less than the emissions produced by making the solar panel. More recent studies however have shown that the emissions produced by manufacturing a solar panel are balanced out in three years of use. And as solar panels now have warranties of 20 to 25 years, and last even longer, the environmental benefit is massive. If you are interested in solar because of the environmental benefits, even generating a portion of your power with the sun will improve the environment.

So, with both financial and environmental gains to be had, is it time you switched to solar?


Article submitted by Carlo Ruggiero.
Carlo Ruggiero is a green aficionado who is passionate about getting the word out on renewable sources of energy and all things green, from funding your hot water to making money from your electric heating.  You can follow his struggle with social media and daily musings on Twitter.

Hydroelectric power, a new wave in personal renewable energy

Following responses on a previous post on basic and general principles for renewable energy sources at home, this writer will now attempt to go into some of the fundamental principles, advantages and problems facing the average person in their attempt to become as energy self-sufficient as possible. 

In this post we tackle one of the most problematic, yet highly efficient means of reaping the rewards of renewable energy on a personal level; using the kinetic energy of water to power your electricity. This is probably most applicable to the average person in the generating of electricity to power your electric radiators. 

First of all; the basics. As this rather dramatic picture of the hydroelectric plant in Columbia shows, hydroelectric power refers to electricity generated by hydro-power; that is the production of electrical power through the use of the gravitational force of falling or flowing water. This type of power is one of the most widely used on large scales due to its many advantages over other types of energy generation. It accounts for approximately 20% of the world's electricity and about 88% of electricity from renewable sources. This method of garnering energy at hydroelectric complex’s has taken off massively in recent years, hitting unprecedented levels of usages; the Three Gorges Dam in China at 22,500 MW being the largest to date. Hydroelectricity has eventually supplied some countries, including Norway, Democratic Republic of the Congo, Paraguay and Brazil, with over 85% of their electricity (nearly 90% in Norway). Even the US has gotten in on the act, with currently over 2,000 hydroelectric power plants which supply around 49% of its renewable electricity. 

Principles

So, how does it work? BASICALLY, in a hydropower system, dams on a river capture its power and direct the fast-flowing water through turbines and turning generators to produce electricity. The difference between the water levels above and below the turbine and the rate of water flow determine the amount of power generated.

 


Pico-hydro

However, this of little use to the average homeowner who doesn’t have a convenient river/dam, or the funding to build one. On a personal level, it is the use of Pico-hydro that becomes applicable. Pico-hydro is a term used for hydroelectric power generation of under 5 KW. As the average house wattage is less than 2 KW, this is ideal. 

Pico-hydro setups typically are run-of-the-river; meaning that dams are not used, but rather pipes divert some of the flow, drop this down a gradient, and through the turbine before returning it to the stream.

The main parts of this system are intake from stream or river, pipe (known as the penstock), water turbine, electrical generator, electronic controller, electrical distribution system, but they can come in a variety of shapes and sizes, as seen here. 


Advantages
  • Gives you uninterrupted and reliable electrical power
  • User controlled power generation
  • Can provide electricity to all typical domestic appliances (think electric heating), so is versatile. Power packs up to 1 kW can be used of non-motive loads such as lighting, TV, Computer, water heating etc. Larger power packs can be used for motive loads such as refrigerators etc...
  • No recurring fuel costs. All this is required is the running of the water down a slope.
  • Has next-to no maintenance costs as the rotating parts are fully balanced and are not exposed to high temperatures unlike internal combustion engine based power packs.
Problems
  • Starting costs. You need the funds to buy the equipment!
  • An obvious drawback to his type of renewable energy sourcing is the necessity of moving water on or near your property. So is very site specific
  • Run-of-the-river style hydro-power is affected by flow and ebb of water, meaning it can be unreliable in certain places or during certain times of the year
  • Certain head, flow and output characteristics are required.
  • Regardless of output, there are certain fixed costs.
Comparisons
Hydroelectricity eliminates the flue gas emissions from fossil fuel combustion, including pollutants such as sulphur dioxide, nitric oxide, carbon monoxide, dust, and mercury in the coal. Hydroelectricity also avoids the hazards of coal mining and the indirect health effects of coal emissions.
Compared to wind farms, hydroelectricity power plants have a more predictable load factor. If the project has a storage reservoir, it can generate power when needed. Hydroelectric systems can be regulated to follow variations in power demand.
Overall, hydroelectric power seems like an attractive prospect for the homeowner. So if you have a site that could run this system and the funds to start it, why not give it a go?


Article submitted by Carlo Ruggiero.

Carlo Ruggiero is a green aficionado who is passionate about getting the word out on renewable sources of energy and all things green, from funding your hot water to making money from your electric heating.  You can follow his struggle with social media and daily musings on Twitter.

California State Assembly Pushes Tough Green Energy Requirement

California has consistently led the nation over the past decade in its adoption of clean energy technologies. The Golden State ranked first in 2010 amongst all states in solar panel installations and has some of the toughest laws on the books regarding environmental causes. This week, the state assembly approved a measure that mandates utilities to increase the percentage of electricity derived from clean sources.

The bill would make utilities to provide 33 percent of their power from renewable sourced by 2020 and awaits approval from the governor. Currently, laws require utilities to generate 20 percent of their electricity from clean sources by 2020. However, critics of the bill say the mandate is unreasonable considering all of California's utilities failed to meet goals stipulating that 20 percent of their electricity come from clean sources by 2010.

Supporters of the bill, on the other hand, assert that in the aftermath of the nuclear crisis in Japan, the U.S. should be more focused on weaning itself off fossil fuels and other energy sources aside from wind and solar power. Moreover, environmentalists claim the mandate could create as many as 10,000 jobs in the state over the course of the next 10 years.

Governor Jerry Brown ran on a platform of increasing the renewable energy mandate, but it is unknown whether he will veto or sign the bill into law.

Read the original article on GetSolar.Com
By GetSolar Staff.

Green Ideas !!!

Throughout the past decade people became more environmentally conscious. We now talk more about renewable energy, about being environmentally friendly, and about making better more efficient products like: motor vehicles, home heating systems, electricity production, green buildings, LEED, etc.

The new global challenge to become "green" has invoked many bright ideas from average people while working on their hobbies or even just dreaming of making something that will be a positive impact to the society and the global challenge to become "green".

Do you have a "Green Idea"? If you would like to share your ideas (green idea, your product/service, discovery, testimonies, etc.) with me and others, you may submit it via a form below I will read your idea and I will post it on this blog if it is a great "Green Idea".

*This is a great opportunity to advertise your product that is relevant to the blog (free of charge). All advertisements must have a well written article.

I hope this blog will inspire creative and innovative people to build better and more efficient products, government to become more business friendly, and everyone to build a greener, healthier, and simply better planet to live on.

I look forward to read your green ideas and post them on this blog soon.

I hate spam and I don't spam. Your email will not be published without your permission. You may submit an article about your idea or product and include links to any videos and/or pictures you would like to share.


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