Energy Trust of Oregon – Solar + Storage
https://www.energytrust.org/incentives/solar-for-your-home/#incentivedetails
TSRF applies to solar access. Batteries do not have their own TSRF rule.
| Incentive / System | TSRF Rule Applies? | Shade Analysis Method | TSRF Minimum | Notes |
|---|---|---|---|---|
| Solar (PV) incentives | ✅ Yes | On-site – String inverter | ≥ 75% at all points | Entire array must meet 75% TSRF. |
| Solar (PV) incentives | ✅ Yes | On-site – Microinverters / MLPE | ≥ 75% for incentivized modules | Modules <75% TSRF may be installed if electrically isolated, but those modules are not eligible for incentives. |
| Solar (PV) incentives | ✅ Yes | Remote shade analysis | ≥ 80% per array plane | Each plane must meet 80% TSRF. |
| Solar systems > 25 kW | ✅ Yes | Any | Case-by-case | Minimal inter-row shading allowed only with ETO pre-approval. |
| Battery / Storage incentives | ⚠️ Indirect | N/A | No TSRF requirement stated | TSRF is a PV rule. If battery incentives are tied to a qualifying solar system, the solar must still pass TSRF. |
What is ETO?
Energy Trust of Oregon provides incentives for qualifying solar and solar + battery systems installed in Oregon.
ETO’s goal:
Important:
ETO may require standards above code or manufacturer specs. If something doesn’t meet ETO rules, incentives can be denied.
To qualify, the project must:
✅ Be located in Oregon