The data set out in the table below, as provided by the Sustainable Authority of Ireland (SEAI), shows the average all in costs and the average grant for the installation of a 3kw, 4kw and 5kw solar pv system under the Domestic Solar PV Scheme in 2023 and to date in 2024. Please note that all cost information is self-reported by the applicant or installer as part of the application process and cannot be verified by SEAI.
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Year 2023
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System Size Range
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Average size of system
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Average Cost
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Average Grant
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up to 3 kWp (3kWp inclusive)
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2.6
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€8,600
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€1,989
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>3kWp to 4kWp (4kWp inclusive)
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3.7
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€11,871
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€2,304
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>4kWp to 5kWp (5kWp inclusive)
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4.6
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€13,895
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€2,400
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>5kWP
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6.5
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€17,975
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€2,404
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Year 2024 Q1-Q3
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System Size range
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Average size of System
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Average Cost
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Average Grant
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up to 3 kWp (3kWp inclusive
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2.7
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€8,203
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€1,874
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>3kWp to 4kwp (4kWp inclusive
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3.7
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€9,410
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€2,200
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>4kWp to 5kwp (5kWp inclusive
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4.5
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€12,915
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€2,270
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>5kWp
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6.7
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€12,431
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€2,278
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