Solar Ricardo

Solar Ricardo

Wednesday, July 22, 2015

Will Low PV Prices Kill Small Wind?

With solar photovoltaic (PV) panel prices going lower and lower, solar arrays are quickly taking the place of small wind power projects and residential turbines. Is this the beginning of the end for small wind?

For many years, renewable energy enthusiasts in the northern areas of the United States favored small wind turbines, or a combination of wind and solar PV to produce electricity. Until recently, the installed cost of small wind turbines (100kW or under) was cheaper than that of PV However, the small turbine business has been plagued with problems since its inception. Many small turbines have been overhyped and under-performing. New machines have hit the market only to disappear at an alarming rate, leaving heart-broken consumers and red-faced dealers.

In a decade that has seen very few technical advancements in small wind systems, PV has shown huge advancements in technology, like micro-inverters, power-point tracking and increased efficiency. At the same time, Chinese PV manufacturers have driven solar panel prices down from $4 per watt in 2005 to less than $1 in 2015- in some cases under 50 cents (under 3 dollars per watt with all installation costs added.) Small wind turbine prices vary widely, with installed costs from $3- $6 per watt. Solar has the inherent advantage of being a solid-state technology, unlike wind turbines, which have a lot of moving mechanical parts. When parts move, they break, and all but a few wind turbines on the market have pretty dismal maintenance records, compared to PV.

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Wednesday, July 15, 2015

Makers” and the Future of Sustainable Industry

In the coming year, the MUM Sustainable Living department will be launching a new class that will introduce students to the “Maker” movement and the growing culture of DIY (do it yourself) technology. Some might ask, “how do electronics, robotics and 3D printing fit into the concept of sustainability?”

When thinking about “sustainable living,” many of us visualize organic farming, natural building and solar energy. However, unlike the “back to the land” movement of the 1970s, the new generation of “tiny house” dwellers and organic farmers depend heavily on...

Tuesday, July 14, 2015

Warren Buffett Loves Solar…As Long As He Owns It

This week, NV Energy, owned by Warren Buffett’s Berkshire Hathaway, signed a Power Purchase Agreement (PPA) to buy electricity from the 100 MW Playa Solar 2 power plant in Nevada at a jaw-droppingly low price of $0.0387 per kWh. Meanwhile, NV Energy’s lobbyists are doing all they can to make it more expensive for Nevada residents to produce their own solar power. Nevada-Solar-1-solar-power-farmIt would seem that Mr. Buffett loves to sell solar to his customers, but he does not like the idea of his customers making their own power. From a strictly business perspective, this is not surprising– after all, why buy rooftop solar from your homeowners or businesses at retail rate, when you can make and sell your own for a tiny fraction of the price?

The problem is, as in most of the United States, utilities in Nevada are government regulated, and operate in government-sanctioned monopoly service territories. This means that residents and businesses in NV Energy’s territory do not have a choice of who they buy their electricity from, and they have no other options as to who they can sell their solar power to. This means that it is up to the Nevada Legislature and the Nevada Utilities Commission to decide what is fair to both parties.

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Saturday, July 4, 2015

Why the Solar Impulse Matters


How can a huge, slow, single-seat plane change the world?

One day before the United States pauses to celebrate the 239th anniversary of its Declaration of Independence, the Solar Impulse 2 solar airplane completed its record-breaking 4,000 mile flight from Japan to Hawaii, taking another small step in the world’s quest to declare independence from fossil fuels.

The Adventure Begins

For those who haven’t been following the Solar Impulse adventure, here’s a little background: Solar Impulse is privately financed project with the goal of flying a solar-powered plane around the world. Based in Switzerland, the project is led by two adventurous aeronauts– Swiss businessman AndrĂ© Borschberg and adventurer Bertrand Piccard (Piccard gained fame for co-piloting Breitling Orbiter 3, the first balloon to circle the world non-stop.) Solar Impulse is funded by a consortium of international businesses including Omega SA, Solvay, ABB, Bayer MaterialScience, Swisscom, Swiss Re , Toyota and FMB Energie. The Solar cells are provided by European solar manufacturer SunPower.

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