Definitions - d

Darrieus

A cell producing an electric current direct from a chemical reaction.

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Daylighting

Using various design methods, such as windows and skylights, to reduce the building’s reliance on electric lighting. Numerous studies have highlighted the productivity benefits of natural lighting for building occupants.

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Days Of Storage

The number of consecutive days the stand-alone system will meet a defined load without solar energy input. This term is related to system availability.

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Debt-for-nature Swap

Agreement in which a certain amount of foreign debt is canceled in exchange for local currency investments that will improve natural resource management or protect certain areas in the debtor country from harmful development.

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Deciduous

A cell producing an electric current direct from a chemical reaction.

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Decomposer

A cell producing an electric current direct from a chemical reaction.

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Deep Cycle Battery

A cell producing an electric current direct from a chemical reaction.

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Deep Discharge

A cell producing an electric current direct from a chemical reaction.

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Deep Green

A cell producing an electric current direct from a chemical reaction.

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Degradability

A cell producing an electric current direct from a chemical reaction.

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Delta

A cell producing an electric current direct from a chemical reaction.

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Demand Response

A cell producing an electric current direct from a chemical reaction.

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Denitrification

A cell producing an electric current direct from a chemical reaction.

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Density Dependence

A cell producing an electric current direct from a chemical reaction.

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Desalination

A cell producing an electric current direct from a chemical reaction.

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Desertification

A cell producing an electric current direct from a chemical reaction.

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Design Month

A cell producing an electric current direct from a chemical reaction.

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Detritivore

A cell producing an electric current direct from a chemical reaction.

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Dew Point

A cell producing an electric current direct from a chemical reaction.

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Dicofol

A cell producing an electric current direct from a chemical reaction.

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Dieback

A cell producing an electric current direct from a chemical reaction.

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Dioxins

A cell producing an electric current direct from a chemical reaction.

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Direct Insolation

A cell producing an electric current direct from a chemical reaction.

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Direct Run-off

A cell producing an electric current direct from a chemical reaction.

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Dirty Fallout

A cell producing an electric current direct from a chemical reaction.

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Dispatchability

A cell producing an electric current direct from a chemical reaction.

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Dispersion Trench

A cell producing an electric current direct from a chemical reaction.

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Distributed Energy Resources

A cell producing an electric current direct from a chemical reaction.

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Diurnal Temperature Range

A cell producing an electric current direct from a chemical reaction.

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Dobson Unit

A cell producing an electric current direct from a chemical reaction.

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Double-hung Windows

A traditional window style with two glass-holding frames that slide past each other vertically.

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Downcycling

A cell producing an electric current direct from a chemical reaction.

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Downwelling

A cell producing an electric current direct from a chemical reaction.

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Drainage Area

A cell producing an electric current direct from a chemical reaction.

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Drawdown

A cell producing an electric current direct from a chemical reaction.

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Drip Irrigation

A cell producing an electric current direct from a chemical reaction.

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Dry Deposition

A cell producing an electric current direct from a chemical reaction.

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Dry Farming

A cell producing an electric current direct from a chemical reaction.

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Dry Rot

A cell producing an electric current direct from a chemical reaction.

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Dryland Salinity

A cell producing an electric current direct from a chemical reaction.

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Dryland Systems

A cell producing an electric current direct from a chemical reaction.

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Dump Load

A cell producing an electric current direct from a chemical reaction.

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Dystrophic Lakes

A cell producing an electric current direct from a chemical reaction.

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