Because no one can be sure when clouds might block sunshine during the day, fossil fuel electricity is needed to fill the gaps. Utility https://www.youtube.com/edit?o=U&video_id=c6HfJTAmqwI note that solar production is often cut back first because starting and stopping natural gas plants is costlier and more difficult than shutting down solar panels.
Solar Intensity Indicator + Junction Box This is where the brains of the Nomad 7 Plus live. Easy-to-read LED indicator displays strength of solar conditions. Receive immediate feedback on panel-to-sun placement to improve solar charging experience.
When first responders arrived to the burning home on Eugene Street in Manchester, New Hampshire just after 2 am on January 27, half the home was already up in flames. It was a big fire, but relatively routine: Working in the dark, the firefighters made sure the two residents got out unharmed, and got to work.
“Effectively, the provision of energy such that it meets the needs of the present without compromising the ability of future generations to meet their own needs. …Sustainable Energy has two key components: renewable energy and energy efficiency.” – Renewable Energy and Efficiency Partnership (British)
Solar power is the conversion of energy from sunlight into electricity, either directly using photovoltaics (PV), indirectly using concentrated solar power, or a combination. Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaic cells convert light into an electric current using the photovoltaic effect.
Third-generation technologies are not yet widely demonstrated or commercialised. They are on the horizon and may have potential comparable to other renewable energy technologies, but still depend on attracting sufficient attention and RD&D funding. These newest technologies include advanced biomass gasification, biorefinery technologies, solar thermal power stations, hot dry rock geothermal energy and ocean energy.
Reuben Wu documented the Crescent Dunes Solar Energy Facility near Tonopah, Nevada. The incredible time-lapse captures dawn till dusk as the mirrors aligned themselves with the changing position of the sun. He also included a drive through the field of mirrors and aerials shots snapped by his drone.
Innovative green energy trends and solutions were at the center of discussion at EXPO 2017 in Astana, Kazakhstan. Specialized Expo 2017 was themed “Future Energy” and brought together representatives of 115 countries and 22 international organizations.
It is an important source of renewable energy and its technologies are broadly characterized as either passive solar or active solar depending on how they capture and distribute solar energy or convert it into solar power. Active solar techniques include the use of photovoltaic systems, concentrated solar power and solar water heating to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light-dispersing properties, and designing spaces that naturally circulate air.
On Sept. 6, 2016, Seattle City Light launched a new customer information system, which offers more flexibility and information for customers. This system comes with changes to your bill. Some of those changes, include a new account number, kilowatt-hour credits versus customer energy monetization and production meter reads on the bill. To learn more about how this will impact you as a solar customer, please visit the
Because many of Off-Grid’s potential customers have experience with bad products, or know someone who has, the company takes extra steps to build trust with its clients. After an Off-Grid installer shows up on his motorbike, he opens the product carton with great solemnity; in an Ivorian village, I watched along with seventeen neighbors, who nodded as the young man held up each component, one by one. He then climbed onto the roof of the house, nailed on a solar panel about the size of a placemat, and used a crowbar to lift up the corrugated-tin roof to run the wire inside. He screwed the battery box to the cement-block wall and walked the customer through the process of switching lights on and off several times, something the man had never done before. The company also offers a service guarantee: as long as customers are making their payments, they can call a number on the box and a repairman will arrive within three days. These LightRiders, as the company calls them, are trained to trouble-shoot small problems. They travel by motorcycle, and if they can’t make repairs easily they replace the system with a new one and haul the old unit back to headquarters.
Geothermal energy is produced by tapping into the thermal energy created and stored within the earth. It arises from the radioactive decay of an isotope of potassium and other elements found in the Earth’s crust. Geothermal energy can be obtained by drilling into the ground, very similar to oil exploration, and then it is carried by a heat-transfer fluid (e.g. water, brine or steam). Geothermal systems that are mainly dominated by water have the potential to provide greater benefits to the system and will generate more power. Within these liquid-dominated systems, there are possible concerns of subsidence and contamination of ground-water resources. Therefore, protection of ground-water resources is necessary in these systems. This means that careful reservoir production and engineering is necessary in liquid-dominated geothermal reservoir systems. Geothermal energy is considered sustainable because that thermal energy is constantly replenished. However, the science of geothermal energy generation is still young and developing economic viability. Several entities, such as the National Renewable Energy Laboratory and Sandia National Laboratories are conducting research toward the goal of establishing a proven science around geothermal energy. The International Centre for Geothermal Research (IGC), a German geosciences research organization, is largely focused on geothermal energy development research.
Green Energy Corp’s GreenBus® software interoperability platform enables the adoption of evolving Smart Grid technologies and integration with legacy power and communications infrastructures. Microgrid developers can now design and implement an architecture that supports advanced technology adoption over time, while realizing the business benefits incrementally.
“We have an interconnected grid so I think it would have been foolish to say, ‘It all has to be done in California,'” Brown continued. “One of the benefits of the grid is that we’re able to trade power — bring hydro down from the Northwest, bring wind in from Wyoming. These are all really good things.”
With solar power surging so much that it is sometimes curtailed, does California need to spend $6 billion to $8 billion to build or refurbish eight natural gas power plants that have received preliminary approval from regulators, especially as legislative leaders want to accelerate the move away from fossil fuel energy?
In stand alone PV systems batteries are traditionally used to store excess electricity. With grid-connected photovoltaic power system, excess electricity can be sent to the electrical grid. Net metering and feed-in tariff programs give these systems a credit for the electricity they produce. This credit offsets electricity provided from the grid when the system cannot meet demand, effectively trading with the grid instead of storing excess electricity. Credits are normally rolled over from month to month and any remaining surplus settled annually. When wind and solar are a small fraction of the grid power, other generation techniques can adjust their output appropriately, but as these forms of variable power grow, additional balance on the grid is needed. As prices are rapidly declining, PV systems increasingly use rechargeable batteries to store a surplus to be later used at night. Batteries used for grid-storage stabilize the electrical grid by leveling out peak loads usually for several minutes, and in rare cases for hours. In the future, less expensive batteries could play an important role on the electrical grid, as they can charge during periods when generation exceeds demand and feed their stored energy into the grid when demand is higher than generation.