The project contains the following systems and strategies related to building energy use:
- Super-insulated building envelope
- LED lighting with occupancy and daylight sensors
- Building Management System for control of lighting and HVAC systems
- Rooftop solar hot water system
- On-site PV parking canopy
- EV charging stations
The guiding energy strategy for the building was to start from a lowest level of energy use possible. Through the systems and strategies listed above the project achieved a low baseline energy use level before employing the on-site PV system to offset the remaining building energy use.
Datasets and utility bills sources and reliability:
Generation data is taken from PV array metering as captured continuously on PV array website. Usage numbers are provided from utility bills (Concord Electric) as logged by building meter.
Cogeneration System Description:
Walden Pond Visitor Center
Renewables and Energy Balance
Renewable Energy Sources:
Renewable energy is generated on-site but not on the building (e.g. wind turbine in the parking lot)
Renewable Energy System Description & Details
Within the main parking area of the park is a RBI Parking Canopy Array with 336 qty Upsolar 315W modules - each w/ module-level DC optimizers, feeding 8 qty Solaredge SE11400A-US inverters. These are arranged on two equal-sized carport structures, single 5 degree tilt each. Azimuths 6 deg & 27 deg East of True South.
Annual renewable energy generated
Annual Renewable Energy Generated Data Type
Renewable Energy System Type(s)
Source of Annual Production Data
PV production numbers were measured from array meter data October 01, 2016 through September 30, 2017 and represents PV array gross production.