# US 9,521,726 B2 · Lighting systems and methods for displacing energy consumption using natural lighting fixtures > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,726 B2 - Document ID: US9521726B2 - Status: Granted - Kind: B2 - Application number: 14/537,675 - Filed: 2014-11-10 - Published: 2015-03-05 - Granted: 2016-12-13 - Earliest claimed: 2007-05-03 - Assignees: Orion Energy Systems, Inc. - Applicants: Orion Energy Systems, Inc. - Inventors: Neal R. Verfuerth; Michael J. Potts - Web page: https://patentgrep.com/patent/US9521726B2 ## CPC - H05B 47/16: by timing means - H05B 47/11: by determining the brightness or colour temperature of ambient light - H05B 47/175: by remote control - H05B 47/19: via wireless transmission - Y02B 20/40: Control techniques providing energy savings, e.g. smart controller or presence detection - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract A lighting system for displacing energy is provided. The lighting system includes a light sensor to measure an amount of light provided from the natural lighting fixture to a building environment. The lighting system further includes processing electronics to receive information from the light sensor and to use the received information to determine when the amount of light provided from the natural lighting fixture is sufficient to allow one or more electric lighting fixtures to be turned off or dimmed, the processing electronics causing the one or more electric lighting fixtures to turn off or dim in response to the determination. The processing electronics are further configured to calculate the energy saved from turning off or dimming the one or more lighting fixtures. The lighting system further includes a communications interface configured to transmit the results of the calculation of energy saved from the processing electronics to a second party. ## Claims ### Claim 1 A lighting system for displacing energy, comprising: a light sensor configured to measure an amount of light provided from a natural lighting fixture to a building environment; processing electronics configured to receive information from the light sensor and to use the received information to determine when the amount of light provided from the natural lighting fixture exceeds a first threshold or exceeds a second threshold greater than the first threshold, the processing electronics configured to turn off or dim a first group of one or more electric lighting fixtures in response to the amount of light provided from the natural lighting fixture exceeding the first threshold, the processing electronics configured to turn off or dim the first group of one or more electric lighting fixtures and a second group of one or more electric lighting fixtures in response to the amount of light provided from the natural lighting fixture exceeding the second threshold, the processing electronics causing the one or more electric lighting fixtures to turn off or dim in response to the determination; wherein the processing electronics are further configured to calculate the energy saved from turning off or dimming the one or more lighting fixtures; and a communications interface configured to transmit the results of the calculation of energy saved from the processing electronics to a second party for completing a financial transaction. ### Claim 2 (depends on 1) The lighting system of claim 1, wherein the natural lighting fixture is a light pipe for mounting to the building environment and configured to provide light to the interior space. ### Claim 3 (depends on 2) The lighting system of claim 2, wherein the light pipe comprises: a reflective tube; a diffuser mounted proximate a first end of the reflective tube; and a light collection system mounted proximate a second end of the reflective tube, the second end opposite to the first end, the light collection system configured to direct natural light into the reflective tube. ### Claim 4 (depends on 3) The lighting system of claim 3, wherein the diffuser comprises a concave surface configured to face the interior of the building environment. ### Claim 5 (depends on 1) The lighting system of claim 1, wherein the light sensor is mounted to the natural lighting fixture. ### Claim 6 (depends on 1) The lighting system of claim 1, wherein the financial transaction comprises an exchange of the energy saved for a rate discount from a utility company. ### Claim 7 (depends on 1) The lighting system of claim 1, wherein the processing electronics are configured to periodically calculate the financial value of a plurality of rate discounts based on the energy saved and to communicate the calculated financial value to a technology provider. ### Claim 8 (depends on 1) The lighting system of claim 1, wherein the financial transaction comprises a payment corresponding to the energy saved in exchange for a reduction of an amount owed for a technology package comprising at least the natural lighting fixture and the processing electronics. ### Claim 9 (depends on 1) The lighting system of claim 1, wherein the second party is an energy trading exchange and wherein the financial transaction comprises exchanging the energy savings for pollution credits. ### Claim 10 (depends on 1) The lighting system of claim 1, wherein the natural lighting fixture comprises at least one light reflective element and at least one light diffusive element, the light reflective element and the light diffusive element positioned to direct outside light into the building environment. ### Claim 11 A computerized method for using a lighting system to displace energy, comprising: receiving information from a light sensor configured to measure an amount of light provided from a natural lighting fixture to a building environment; providing the received information to processing electronics configured to use the received information to determine when the amount of light provided from the natural lighting fixture exceeds a first threshold or exceeds a second threshold greater than the first threshold; using the processing electronics to cause an output of a first group of the one or more electric lighting fixtures to reduce in response to a determination that the amount of light provided from the natural lighting fixture exceeds the first threshold; using the processing electronics to cause the output of the first group of one or more electric lighting fixtures and an output of a second group of one of more electric lighting fixtures to reduce in response to a determination that the amount of light provided from the natural lighting fixture exceeds the second threshold; using the processing electronics to calculate the energy saved from reducing the output of the one or more electric lighting fixtures; and communicating results of the calculation of energy saved from the processing electronics to a second party for completing a financial transaction. ### Claim 12 (depends on 11) The computerized method of claim 11, wherein the natural lighting fixture is a light pipe for mounting to the building environment and configured to provide natural light to the interior space of the building environment. ### Claim 13 (depends on 12) The computerized method of claim 12, wherein the light pipe comprises: a reflective tube; a diffuser mounted proximate a first end of the reflective tube; and a light collection system mounted proximate a second end of the reflective tube, the second end opposite to the first end, the light collection system configured to direct natural light into the reflective tube. ### Claim 14 (depends on 13) The computerized method of claim 13, wherein the diffuser comprises a concave surface configured to face the interior of the building environment. ### Claim 15 (depends on 11) The computerized method of claim 11, wherein each of the one or more electric lighting fixtures comprises a plurality of bulbs, and wherein reducing the output of the one or more electric lighting fixtures comprises at least one of: (a) turning off half of the bulbs of the one or more electric lighting fixtures; and (b) step-dimming the bulbs of the one or more electric lighting fixtures via one or more step-dimming ballasts. ### Claim 16 (depends on 11) The computerized method of claim 11, wherein the financial transaction comprises the energy saved in exchange for a rate discount from a utility company. ### Claim 17 (depends on 11) The computerized method of claim 11, wherein the financial transaction comprises a payment corresponding to the energy saved in exchange for a reduction of an amount owed for a technology package comprising at least the natural lighting fixture and the processing electronics. ### Claim 18 (depends on 11) The computerized method of claim 11, further comprising: aggregating received information from a plurality of light sensors in the building environment; and using the aggregated information to determine how many electric lighting fixtures to turn off while maintaining target lighting levels in the building environment. ### Claim 19 A lighting system for displacing energy, comprising: a light sensor configured to measure an amount of light provided from a natural lighting fixture to a building environment; processing electronics configured to receive information from the light sensor and to use the received information to determine when the amount of light provided from the natural lighting fixture is sufficient to allow one or more electric lighting fixtures to be turned off or dimmed, the processing electronics causing the one or more electric lighting fixtures to turn off or dim in response to the determination; wherein the processing electronics are further configured to calculate the energy saved from turning off or dimming the one or more lighting fixtures; and a communications interface configured to: transmit the results of the calculation of energy saved from the processing electronics to a second party for completing a financial transaction; and receive information identifying a peaking time period from a remote source, wherein the processing electronics are configured to check for potential energy displacement in response to the information identifying the peaking time period; and wherein the processing electronics conducts the check by comparing the amount of light provided from the natural lighting fixtures of the building environment to a threshold minimum value.