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  2. Comparison of commercial battery types - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_commercial...

    Cost † Discharge efficiency Self-discharge rate Shelf life Anode Electro­lyte Cathode Cutoff ... Lead–acid: SLA VRLA PbAc Lead: H 2 SO 4: Lead dioxide: Yes 1881 ...

  3. Lead–acid battery - Wikipedia

    en.wikipedia.org/wiki/Lead–acid_battery

    About 60% of the weight of an automotive-type lead–acid battery rated around 60 A·h is lead or internal parts made of lead; the balance is electrolyte, separators, and the case. [8] For example, there are approximately 8.7 kilograms (19 lb) of lead in a typical 14.5-kilogram (32 lb) battery.

  4. Cost per lead - Wikipedia

    en.wikipedia.org/wiki/Cost_per_lead

    Cost per lead, often abbreviated as CPL, is an online advertising pricing model, where the advertiser pays for an explicit sign-up from a consumer interested in the advertiser's offer. It is also commonly called online lead generation .

  5. Economies of scale - Wikipedia

    en.wikipedia.org/wiki/Economies_of_scale

    Overall costs of capital projects are known to be subject to economies of scale. A crude estimate is that if the capital cost for a given sized piece of equipment is known, changing the size will change the capital cost by the 0.6 power of the capacity ratio (the point six to the power rule). [16] [d]

  6. Cost of electricity by source - Wikipedia

    en.wikipedia.org/wiki/Cost_of_electricity_by_source

    The cost of a solar PV module make up the largest part of the total investment costs. As per the recent analysis of Solar Power Generation Costs in Japan 2021, module unit prices fell sharply. In 2018, the average price was close to 60,000 yen/kW, but by 2021 it is estimated at 30,000 yen/kW, so cost is reduced by almost half.

  7. Allocative efficiency - Wikipedia

    en.wikipedia.org/wiki/Allocative_efficiency

    Allocative efficiency is a state of the economy ... cost of production, the allocation efficiency is at the output level. ... allocation efficiency and lead to higher ...

  8. Energy conversion efficiency - Wikipedia

    en.wikipedia.org/wiki/Energy_conversion_efficiency

    Unlike efficacy (effectiveness), which is a unit of measurement, efficiency is a unitless number expressed as a percentage, requiring only that the input and output units be of the same type. The luminous efficiency of a light source is thus the percentage of luminous efficacy per theoretical maximum efficacy at a specific wavelength.

  9. Experience curve effects - Wikipedia

    en.wikipedia.org/wiki/Experience_curve_effects

    An example of experience curve effects: Swanson's law states that solar module prices have dropped about 20% for each doubling of installed capacity. [1] [2]In industry, models of the learning or experience curve effect express the relationship between experience producing a good and the efficiency of that production, specifically, efficiency gains that follow investment in the effort.