Solar Feasibility Studies Offered

1) Standard Solar Feasibility Study

ETO incentives available, see ETO Incentives blog posts for ETO eligibility requirements.

Study Includes

  • Executive summary including a description of key findings, solar analysis, and estimated project installation timeframe.

  • Solar Resource Assessment report showing the PV system energy performance impact of shading, system tilt and orientation using HelioScope.

  • Site specific equipment selection considerations and recommendations for racking, mounts, and inverters.

  • Drawing of PV system layout including:

    • proposed locations of PV modules and inverter(s), location of all applicable electrical panels and meters, roof or installation site layout, any pre-existing renewable energy systems (if applicable)

    • location where the lowest Total Solar Resource Fraction (TSRF) was calculated, this is a measurement of expected sunlight available. ETO requires a TSRF of 80% or higher for remote satellite calculations.

  • Single line diagram (SLD) including:

    • planned electrical components, plus main service panel and utility connection, PV string wiring, conductor and ground wire types and sizing, length of wire runs, conduit types and sizing, AC & DC breaker sizing

    • voltage drop calculations

    • a detailed schedule of system components

  • Financial summary with estimated cost, including:

    • estimated tax credits, accelerated depreciation, grants, and potential Energy Trust incentives, as applicable.

  • A brief outline of any design, permitting, zoning, structural, electrical, or interconnection considerations that may affect the potential system design, project timeline or installation cost.

2) Standard Solar Feasibility Study + Energy Storage Option

Study Includes

  • Everything listed above for the Standard Solar Feasibility Study

  • Additional energy storage equipment selection considerations and recommendations

  • Additional drawing of PV + energy storage system layout

  • Additional Single line diagram (SLD) for PV + energy storage design option

3) Solar Plus Storage Full Feasibility Study

ETO incentives available, see ETO Incentives blog posts for ETO eligibility requirements.

Study Includes

  • Executive summary identifying key findings from the study and recommendations for next steps.

  • Solar Resource Assessment report showing the PV system energy performance impact of shading, system tilt and orientation using HelioScope.

  • Site specific equipment selection considerations and recommendations for racking, mounts, inverters, and batteries.

  • Drawing of PV + Storage system layout including:

    • proposed locations of PV modules, inverters, and batteries; location of all applicable electrical panels and meters, roof or installation site layout, any pre-existing renewable energy systems (if applicable)

    • location where the lowest Total Solar Resource Fraction (TSRF) was calculated, this is a measurement of expected sunlight available. ETO requires a TSRF of 80% or higher for remote satellite calculations.

  • Single line diagram (SLD) including:

    • planned electrical components, plus main service panel and utility connection, PV string wiring, conductor and ground wire types and sizing, length of wire runs, conduit types and sizing, AC & DC breaker sizing

    • voltage drop calculations

    • a detailed schedule of system components

  • Financial summary with estimated cost, including:

    • estimated tax credits, accelerated depreciation, grants, and potential Energy Trust incentives, as applicable.

  • A brief outline of any design, permitting, zoning, structural, electrical, or interconnection considerations that may affect the potential system design, project timeline or installation cost.PV + Energy storage design option including system layout and SLD

  • Analysis of customers electricity consumption and utility tariff rate.

    • For new commercial construction, a modeled load profile with 15-minute or maximum 1-hour data.

 

System design will include a schedule of equipment (module, inverter, Energy Storage System) for each design scenario analyzed. Equipment must be commercially available, meet Energy Trust installation requirements, and capable of utility communication unless otherwise approved.

  • Description of the capacity, expected annual electricity production, financial benefit provided by the solar array for all proposed scenarios. Include documentation or an explanation of your production estimate.

  • Description of the capacity, expected storage potential of the energy storage system, and financial benefit provided by the battery storage for all proposed scenarios. Include documentation or an explanation of your methodology.

  • Description of the potential benefits for the specific solar plus storage equipment chosen in each scenario

  • Summarize the Energy Storage System use cases that the chosen equipment is capable of providing that have customer benefits . Examples may include but are not limited to: time of use bill management, solar self consumption, demand charge reduction, preventing backfeed to the grid, backup power, etc.

  • Summarize the Energy Storage System use cases that the chosen equipment is capable of providing that have grid benefits. Examples may include but are not limited to: Demand reduction, peak reduction, voltage regulation, frequency regulation, etc,

  • Summarize any other potential benefits that the Energy Storage System can provide.