Last year, Google invested more than $915 million in clean energy projects — solar, wind and transmission.

That’s a lot of money, even for Google, which had $38 billion in revenues in 2011. The investments don’t appear to be core to the company’s mission of organizing information, and they have attracted criticism, as well as some careless reporting, implying that the Internet giant is exiting the alternative energy business.

As our conventional sources of energy are about to go extinct, scientists are developing unique and indifferent technologies to meet the global demand of energy. Carl Peart, a Mexican student, entered the ‘Create the Future Design Contest, 2011‘, with this unique design to produce clean energy. Named ‘Solar collection and Transfer Satellite’, it uses the system of Electro Mechanical Batteries to store energy, which is collected by the solar panels installed on the satellite. EMBs are simple and have amazing potential to store energy.

According to a study conducted by ICF, a consulting firm for the US Department of Defense, surplus land at four military bases in the Mojave desert in California could be capable of producing up to 7 Gigawatts of solar power. These bases include, the Edwards Air Force base, Fort Erwin, China Lake and Twenty-nine Palms. Some 37,873 acres of land is available for setting these solar power plants, without impacting the space needs of the military for its ongoing operational needs or for potential future needs. The type of solar power plant to be installed, whether silicon flat panels or solar concentrators, has not yet been determined. If the go-ahead happens, power plant construction could commence by 2015.

Americans have recently voiced support for solar energy, and the latest installation at the Marine Helicopter Squadron 1’s greenside hangar in Quantico seems to support that — it’s a 120-kilowatt solar array powered by 500 solar panels putting out a total of 150,000 kWh per year.

The solar array will be installed by FLS Energy and the solar panels will be provided by Suniva, which was chosen by FLS Energy CEO Michael Shore specifically because of its panels’ high efficiency and because it builds American. (Suniva’s panels contain more than 80% U.S. content, according to Suniva.)

Some more astonishing stats on the progress Germany is making on solar power thanks to good, steady and predictable renewable energy policy: Greentech Media shares the astonishing fact that in the month of December alone Germany installed 2 GW of solar PV. For the whole of 2011, Germany installed 7 GW.

The US managed to install 1.7 GW in the same time period—which isn’t to knock US installation rates so much as to further highlight the massive Germany push to install more PV before the feed-in tariff for it drop as planned.

Renewable resources and non renewable resources are at two ends of a tug-of-war battle. While the latter is presently being used to an exhaustive extent, the former is still trying to find a prominent place in the list of energy sources. Conventional sources like coal have been used for a number of decades to power industries and homes. Its abundance and cheap cost is what propelled many to turn to it in the first place. The Industrial Revolution of the 18th and 19th centuries saw huge amounts of coal being used to drive countries like Britain to the forefront of progress. Earlier, this natural resource was used in small quantities and coal could be mined from close to the surface of the earth. However, as demands increased, there was a need to drill ever deeper.

I wonder what it feels like to know that you’ve contributed to space expeditions and, indirectly, to the future of mankind? Very proud, I assume, as must feel the engineers from SpaceX, a private space transport company led by Elon Musk, also Tesla Motors’ CEO.

During its first mission to the International Space Station, the Dragon spacecraft will spread out solar arrays within minutes after its departure.

The arrays will be put in place to capture the energy needed to run sensors, cooling and heating systems as well as keeping in touch with SpaceX’s Mission Control Center and the ISS.

India seems to aim higher and think bigger in terms of its solar energy: from a set goal of 20 GW, the National Solar Mission grew its prospects to 33.4 GW all around the country, according to a report by Bridge to India.

The first step is to have 14.15 GW by 2018. By then, solar energy will have its own respected place on the national grid and more progress will have been made regarding the emissions level.

This will be possible due to the increased production of PV cells and the possibility of cheap imports from China. The final cost is estimated at around 40% less than what it is now.