Solar photovoltaic measurement

1. A method of calculating one or more shading conditions associated with a structure, comprising:

determining an azimuth of a reference roof edge relative to an orientation of a first image of a structure, the first image comprising an aerial image;

capturing, via an image capture device, a second, different image at a determined measurement location proximate the structure, the second, different image comprising a spherical image;

determining a relative azimuth of the reference roof edge from a lower hemisphere of the spherical image;

determining an orientation of the image capture device based on the azimuth of the reference roof edge and the relative azimuth of the reference roof edge; and

calculating one or more shading conditions associated with the structure based on the orientation of the image capture device.

2. The method of claim 1 , further comprising identifying the lower hemisphere and an upper hemisphere of the spherical image.

3. The method of claim 2 , wherein calculating the one or more shading conditions comprises identifying shading objects in the upper hemisphere of the spherical image.

4. The method of claim 1 , further comprising determining an orientation of the reference roof edge.

5. The method of claim 1 , wherein capturing the spherical image comprises positioning the image capture device, including a pole having a spherical camera coupled thereto, at the determined measurement location, wherein at least a portion of the spherical camera is positioned above a roof edge of the structure.

6. The method of claim 1 , wherein capturing the spherical image comprises capturing the spherical image with a spherical camera including a dual-axis electronic accelerometer for determining a downward view of the spherical image and an upward view of the spherical image.

7. The method of claim 1 , further comprising determining a tilt of a roof edge via at least one of the aerial image and one or more tilt measurements of the roof edge.

8. The method of claim 1 , wherein calculating one or more shading conditions comprises calculating one or more shading conditions for a time period for known sun positions during the time period.

9. The method of claim 1 , wherein the reference roof edge comprises an outer roof edge including at least one of an eave and a ridge.

10. The method of claim 1 , wherein the reference roof edge is substantially flat.

11. A non-transitory computer-readable storage medium storing instructions that when executed by a processor cause the processor to perform instructions, the instructions comprising:

determining an azimuth of a reference roof edge relative to an orientation of an aerial image of a structure;

determining a relative azimuth of the reference roof edge from a lower hemisphere of a spherical image captured, via an image capture device, proximate the structure at one measurement location, the aerial image and the spherical image being different images;

determining an orientation of the image capture device based on the azimuth of the reference roof edge and the relative azimuth of the reference roof edge; and

determining at least one shading condition associated with the structure based on the orientation of the image capture device.

12. The non-transitory computer-readable storage medium of claim 11 , further comprising identifying the one measurement location in the aerial image.

13. The non-transitory computer-readable storage medium of claim 11 , further comprising identifying the reference roof edge.

14. The non-transitory computer-readable storage medium of claim 11 , wherein determining at least one shading condition comprises identifying shading objects in an upper hemisphere of the spherical image.

15. The non-transitory computer-readable storage medium of claim 11 , further comprising identifying the lower hemisphere and an upper hemisphere of the spherical image.

16. The non-transitory computer-readable storage medium of claim 11 , wherein determining the relative azimuth of the reference roof edge from the lower hemisphere comprises determining the relative azimuth via a downward rectilinear view.

17. A method of determining at least one shading condition for a solar power system, comprising:

determining an azimuth of a reference roof edge relative to an orientation of a first image of a structure, the first image comprising an aerial image;

determining a relative azimuth of the reference roof edge from a lower hemisphere of a second, different image captured, via an image capture device, at one location proximate the structure, the second, different image comprising a spherical image;

determining an orientation of the image capture device based on the azimuth of the reference roof edge and the relative azimuth of the reference roof edge; and

determining at least one shading condition associated with the structure based on the orientation of the image capture device.

18. The method of claim 17 , wherein determining the azimuth of the reference roof edge comprises determining the azimuth of an outer reference roof edge including at least one of an eave and a ridge.

19. The method of claim 17 , further comprising capturing the spherical image via a spherical camera coupled to a pole for positioning at least a portion of the spherical camera above at least a portion of a roof of the structure.

20. The method of claim 17 , further comprising capturing, via a spherical camera having at least a portion positioned above at least a portion of a roof of the structure, the spherical image at the one measurement location.