# Do skylights and daylight panels cut factory lighting emissions?

Canonical: https://senseible.earth/answers/factory-skylights-daylight-lighting-savings

Yes, if lights actually switch off when daylight is enough. Daylight sheets or light pipes replace lighting kWh during the day, at 0.710 kg CO2 per kWh. Add daylight sensors or zoned switching, or people leave lights on. In air-conditioned areas, check the extra heat gain.

## Make the saving real

- Daylight sensors or timers on the lighting circuits.
- Zones by row, so lights near skylights switch off first.
- Clean sheets, since dust cuts light.

## Measure it

Sub-meter the lighting circuit and compare daytime kWh before and after, over the same months.

## What Senseible does here

Senseible reads fuel invoices and electricity bills and applies IPCC 2006 factors and the CEA grid factor (0.710 kg CO2 per kWh), so you can compare Scope 1 and 2 before and after a change from the documents themselves.

- [LED retrofit savings](https://senseible.earth/answers/led-retrofit-energy-co2-savings)
- [Warehouse electricity per pallet](https://senseible.earth/answers/warehouse-electricity-per-pallet-position)
- [Office footprint per sq ft](https://senseible.earth/answers/office-carbon-footprint-per-square-foot)

Sources: [CEA CO2 Baseline Database for the Indian Power Sector](https://cea.nic.in/cdm-co2-baseline-database/?lang=en), [Bureau of Energy Efficiency](https://beeindia.gov.in), [GHG Protocol Scope 2 Guidance](https://ghgprotocol.org/scope-2-guidance)

Last reviewed 2026-10-22.