Best Practices

The key factors in implementing renewable energy for onsite generation include:

Onsite generation can reduce peak utility loads, reducing utility costs and need for electricity generation capacity. Utilities often encourage onsite generation and support it with subsidies and incentives.

If your project is located in the U.S., consult wind and solar maps developed by the Department of Energy (see Resources). 

Cost is a huge issue for renewable energy installations. In initial assessments from the

Contact an experienced renewable energy provider who can provide generation capacity for solar, wind or hydro systems installed onsite in a pre-feasibility study and identify potential obstacles. It is easiest to locate the providers through the trade organizations or manufacturers.

Conduct a preliminary cost-benefit analysis to determine the first cost and life cycle payback. Most teams use LEED point thresholds as a way to frame the analysis. For example, what is the cost and the payback of meeting the 1% threshold?

The commissioning agent should check and verify operation and setpoints of the controls. (See EAp1.)

During the construction bidding phase, discuss the schedule to make sure correct control equipment is purchased and installed on time. The controls are only as good as the feedback and response system they are connected to. Explain the control sequence to the subcontractors to minimize confusion. 

Install a building management system that communicates with occupants to open operable windows when outside temperature and humidity are within comfort range as defined by ASHRAE 55-2004. 

Configure the mechanical system so that when windows are open, cooling is turned off to avoid wasting energy. You can accomplish this by hooking operable windows up to wireless sensors that communicate with the cooling system.