There are some things that could have been more controlled during data collection, such as some variables. The species of tree was somewhat controlled, but there was one tree that had been mistaken for a Picea glauca. Nonetheless, the results were not affected, as they were the same as the other trees, but this was one factor that was not as controlled as presumed.

As well, the measuring skills may have been off by a few degrees, which is natural human error due to parallax. Precise measurements were attempted based on the protractor and measuring ruler, but it is difficult when there is wind, coldness and other branches to affect one’s measuring ability. Even so, this was not a significant difference in data for much inaccuracy, as statistically proven.

Measurements for the efficiency of the system may be slightly inaccurate on the analog multimeter due to parallax once more. Data was read at eye level, so the actual measurement should not be too different from the recorded amount. As well, during system construction, some of the gluing connections may have affected the angle of the branch, changing the original measurements by a slight amount. However, this is not a significant difference.

Other possible errors include the varying states of quality for each panel, as there is always the manufacturer’s flaw to consider. Soldering connections to the solar panels may be flawed slightly, or joined in the wrong manner, affecting the overall electrical current. This may also be affected by the usage of electrical tape creating a slight amount of resistance. Connections may also be not as well joined, as wires may not touch as closely as they should. It is not an important amount of energy loss, as it still proves that this system is more effective than present-day technology, but some possible errors do exist.