Lighting: Difference between revisions
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→2022 Retrofit Proposal
Matt Parnell (talk | contribs) |
Matt Parnell (talk | contribs) |
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=== 2022 Retrofit Proposal === | === 2022 Retrofit Proposal === | ||
The existing 500 W incandescent pool lights are energy inefficient and require frequent maintenance. The fixtures are old, and despite gasket replacement, are prone to leak. Repair of these fixtures is very expensive when outsourced (roughly $500) and time-consuming when handled in-house. | |||
New fixtures from Pentair are proposed ([https://www.pentair.com/en-us/products/residential/pool-spa-equipment/pool-lighting/intellibrite_5g_whiteledpoollights.html Intellibrite 5G White LED]). The cost per fixture is roughly $700, $750, or $800, depending upon the needed cable length (50, 100, or 150 ft, respectively). Rough estimates suggest 5 x 50 ft, 4 x 100 ft and 1 x 150 ft lengths may be needed. So, a total of $5,600 (rough estimate only). | |||
Assume a 10 week (or longer) lead time based upon vendor experience. | |||
The color-changing LED options, while interesting, are not preferred for a commercial pool where the brightest white light output is needed for safety. | |||
==== Energy Savings ==== | ==== Energy Savings ==== | ||
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This results in a total of 172 hours of theoretical usage for 2021, totaling 859 kWh. | This results in a total of 172 hours of theoretical usage for 2021, totaling 859 kWh. | ||
Reducing consumption to 550 W (55 W LED fixtures x 10 lights) reduces consumption to about 95 kWh. The cost drops from about $112 to about $12 (assumes $0.13/kWh). | |||
==== DTE Prescriptive Incentive ==== | ==== DTE Prescriptive Incentive ==== | ||