Perpetual Innovation

Category: solar power

  • Tesla Solar Roofs. Better, Cheaper, Stronger, Longer

    Tesla Solar | Tesla:

    Here is the information to order your roof from Tesla (that has now merged with SolarCity).

    The tempered glass tiles are much stronger, much cheaper and last long (lifetime of the house or infinity warranty, whichever comes first).

    Oh, and then there’s the PV electricity generation, above that. It is 30-years warranty on the PV, it seems.

    This is something that is called an “irrefusable” value proposition. Especially if the house (building) is new, or an older roof that should be replaced within a few years.

    Here’s how it works. Most of the roof tiles are not PV. Only 30% to 40% of the roof would be in prime solar view.  The PV panels are about $40 sq ft, but the averages should be about $22. That also depends on the sizing of the system, no need to over produce in most cases (states).

    Here’s Tesal’s Specs and Sizing Calculator.

    Apparently, from the street, you can’t tell the difference between regular and PV tiles. Top view (helicopter) view you can, although it should be far less conspicuous than the usual PV panels.

    Also, remember those 5 GigaFactories for batteries and cars going up around the worlds. Well, couple in US and next one in Europe (?UK?).

    The pricing for preorder that started in May 2017, includes an installed 14kWh Powerwall  2 system. With battery backup, they entire building could go off grid, assuming the local power company and state law allow it. A generator (fuel cell) would do the trick.

    Of course, hooking to the grid provides the opportunity to sell back to the grid and assist with peaking. This type of building can help twice with peaking.  The excess electricity during peak times (heat of the day, usually) can be sold back. The batteries can be used as well at peak. They can be replenished in off times by the PV system or during low-load off-hours by the power company.
    This idea of battery pack backup can also apply to your favorite EV car as well. Dare I say Tesla or Bold. If the car will not be used today, why not use it to help with peaking loads, if needed, as needed?

    For an existing home/building, you will want to do an energy audit and reduce the energy usage first, then size and install the roof (with power system).

    Very cool.

    This appears to be a game changer.

    ‘via Blog this’

  • Tech is here. Improving faster.

    Romm discusses the changes in solar, wind, EE, and batteries that keep beating expectations. Note the charts on estimates that have been consistently low.
    http://thinkprogress.org/climate/2016/05/12/3776728/climate-change-solutions/?utm_source=newsletter&utm_medium=email&utm_campaign=cptop3&utm_term=1&utm_content=22

  • ECO:nomics | The Wall Street Journal

    ECO:nomics | The Wall Street Journal:

    The WSJ’s big forum on ECOnomics seems to have been a great learning and sharing session for divergent ideas on how to blend economic growth/development with environmental needs.

    A special report in the WSJ on Wed, April 13, 2016 offers several takes and interviews covering the spectrum of associated topics.

    A couple base statistics are that coal generated electricity has dropped from half of all US generation to less than 1/3 within about 10 years. The big gain is Nat Gas, but that too is changing. In 2015 solar was the #1 install base with 9.5 gw (37% of new), NatGas 8 gw (31%), wind 6.8 gw (26%). Only 4% new nuclear and fractions of other.

    Related to the switch from coal to NatGas, this is only a stop-gap measure: moving from one really bad non-renewable, coal; to a relatively better non-renewable, NatGas. Michael Brune from the Sierra Club comments on the methane and other issues that brings NatGas closer to parody with coal (really ugly vs. relatively ugly).

    Coal is really taking a hit, as Peabody goes bankrupt this week, bringing down all of the big coal companies. No victory laps here; the pain and suffering in the mining communities is going to be horrendous. (Also, bankruptcy doesn’t mean the mines will all stop, just that the debt associated with the companies will replace the equity positions.)

    Even against crashing oil/coal prices, solar & wind are winning major solid footing. Even with the likelihood of subsidies going away, are now starting to be very price competitive (especially if you consider externality costs). BUT when the wind doesn’t blow and the sun doesn’t shine (night) we still need regular power generation. Or battery-type storage.

    You have to marvel at the gain of renewables during the second year of record low fossil fuel costs. That is really, really impressive.

    Check out all the articles on the ECOnomics conference and interviews at the special business & energy section of the WSJ: http://www.wsj.com/news/types/journal-reports-energy

    ‘via Blog this’

  • What just happened in solar is a bigger deal than oil exports

    What just happened in solar is a bigger deal than oil exports:

    Interesting how the BIG move in solar/wind in the USA is so tied to subsidies. At least for the next 5 years. But, soon, especially with the volume of growth encouraged by the subsidies, there will no longer be a need for subsidies.

    The really big loser all around is (dirty) coal. Once the health and environmental costs of coal are factored in, coal moves from our cheapest source of electrical energy to one of our worst. As well, wind and solar are improving in performance rapidly.

    And then there are the environmental factors of coal that start to get uglier and uglier once you start to count pollution, the health and safety issues and the contribution to greenhouse gases. Other types of energy like oil and natgas are increasingly throwing coal under the bus, too.

    So, renewable electrical energy could be really booming over the next 5 years with the continued subsidies. Those subsidies are being phased out; but it all looks like an excellent plan forward toward a more renewable USA.

    ‘via Blog this’

  • Power Struggle: How the Energy Market Could Shift in 2016 – Bloomberg Business

    Power Struggle: How the Energy Market Could Shift in 2016 – Bloomberg Business:

    Wow. Absolutely perfect assessment of the energy world, past and future.

    With pretty graphics to go along with the trends in energy.

    So what will be the energy source(s) of the future.

    The one thing for sure, is that it won’t be coal. As the rest of the world gets out of coal, so will the 2.3B people in China and India. They simply can’t afford the pollution and health costs that come free with cheap coal.

    The assessment seems puts energy into perspective, and indicates how a clear transition from one form to another (wood to coal, and coal to oil) might not be what we can expect to look forward to in the future.

    Don’t want to ruin the ending, you will have to watch all 3 minutes of the video to find out what to expect in the energy world.

    ‘via Blog this’