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  2. Cost of electricity by source - Wikipedia

    en.wikipedia.org/wiki/Cost_of_electricity_by_source

    The levelized cost of electricity (LCOE) is a metric that attempts to compare the costs of different methods of electricity generation consistently. Though LCOE is often presented as the minimum constant price at which electricity must be sold to break even over the lifetime of the project, such a cost analysis requires assumptions about the value of various non-financial costs (environmental ...

  3. Electricity pricing - Wikipedia

    en.wikipedia.org/wiki/Electricity_pricing

    Electricity price forecasting (EPF) is a branch of energy forecasting which focuses on using mathematical, statistical and machine learning models to predict electricity prices in the future. Over the last 30 years electricity price forecasts have become a fundamental input to energy companies’ decision-making mechanisms at the corporate level.

  4. GE 25-ton switcher - Wikipedia

    en.wikipedia.org/wiki/GE_25-ton_switcher

    The 25-tonners have been nicknamed "critters" by operators and railfans alike, due to their small size. This nickname is shared with similar GE products such as the closely related 23-ton switcher. [1] Starting in the 1970s, most 25-ton switchers were gradually replaced, either by more powerful and modern switcher locomotives, or by railcar ...

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  6. Rooftop solar power - Wikipedia

    en.wikipedia.org/wiki/Rooftop_solar_power

    Rooftop PV systems around the world: Berlin, Germany (top-right), Bensheim, Germany (middle) and Kuppam, India (bottom-right) A rooftop solar power system, or rooftop PV system , is a photovoltaic (PV) system that has its electricity -generating solar panels mounted on the rooftop of a residential or commercial building or structure. [ 1 ]

  7. Unit price - Wikipedia

    en.wikipedia.org/wiki/Unit_price

    Seller Two offers widgets at a unit price of $5. Seller Three offers widgets at a unit price of $4. Buyer uses unit price to value the packages offered by each of the three sellers and finds that Seller Three offers widgets at the best value, the best price. Unit price is a common form of valuation in sales contract for goods sold in bulk ...

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