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opinion:frater_secessus:controllers_and_dollars_per_watt [2020/04/16 18:23] frater_secessus [Morning, 75% insolation] |
opinion:frater_secessus:controllers_and_dollars_per_watt [2021/06/26 14:33] frater_secessus [Morning, ideal] |
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+ | fixme | ||
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+ | NOTE: this is a rough draft. | ||
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====== cost analysis of small controller / panel combinations ====== | ====== cost analysis of small controller / panel combinations ====== | ||
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I ran some numbers, using Renogy gear where possible: | I ran some numbers, using Renogy gear where possible: | ||
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+ | ===== general conclusion ===== | ||
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+ | The general pattern is that MPPT typically makes more power in absolute terms, and PWM/shunt make more power per dollar spent. | ||
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- 20A MPPT 200W poly/mono, **174.80W** | - 20A MPPT 200W poly/mono, **174.80W** | ||
- 20a PWM 200w poly **125.89W** @ $1.99/ | - 20a PWM 200w poly **125.89W** @ $1.99/ | ||
+ | - 10A MPPT 200w mono/poly, **121W** @ $2.16/ | ||
- 10a MPPT 100W mono/poly **87.4W** @ $1.84/ | - 10a MPPT 100W mono/poly **87.4W** @ $1.84/ | ||
- 10a PWM 100W poly **62.94W** @ $1.82/ | - 10a PWM 100W poly **62.94W** @ $1.82/ | ||
- | - 10a PWM 100w mono **59.25W** @ $1.93/ | ||
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- 20A MPPT 200W poly/mono, 174.80W | - 20A MPPT 200W poly/mono, 174.80W | ||
- 10a PWM 100W poly 62.94W @ **$1.82/ | - 10a PWM 100W poly 62.94W @ **$1.82/ | ||
- | - 10a MPPT mono/poly 87.4W @ **$1.84/ | + | - 10a MPPT 100W mono/poly 87.4W @ **$1.84/ |
- | - 10a PWM 100w mono 59.25W @ **$1.93/ | + | - 10a PWM 100W mono 59.25W @ **$1.93/ |
- 20a PWM 200w poly 125.89W @ **$1.99/ | - 20a PWM 200w poly 125.89W @ **$1.99/ | ||
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- 20A PWM 200w mono 154.47W @ **$1.62/ | - 20A PWM 200w mono 154.47W @ **$1.62/ | ||
- 20A MPPT 200W mono/poly 165.27W @ **$1.75/ | - 20A MPPT 200W mono/poly 165.27W @ **$1.75/ | ||
- | - 10A MPPT 200w mono/ | + | - 10A MPPT 200w mono/poly 146.0W |
- 10A MPPT 100W mono/poly 82.63W @ **$1.95/ | - 10A MPPT 100W mono/poly 82.63W @ **$1.95/ | ||