Solar + BESS Sizing & Dispatch Optimization API
ACCESS OPTIONS API access and platform access are separate. You do not need to use the web tool to use this API. Free plan — API access only. POST /bess/quick. Pro plan — Full API access. Web tool included as a perk. Ultra plan — Full API access. Web tool with white-label rights. Requires approval. If you only need the API for a personal project, integration, or platform build — Pro is all you…
Solar + BESS Sizing & Dispatch Optimization API endpoints
| Method | Endpoint | Description |
|---|---|---|
| health | ||
| GET |
Health Check /health |
Returns server status and the complete methodology register — CAPEX model, LCOS method, sizing algorithm, RTE convention, ITC basis, and all primary source citations. Call this… |
| pricing | ||
| GET |
Pricing Plans /pricing |
Returns the full plan structure — endpoints available per tier, rate limits, and feature list. No authentication required. |
| bess | ||
| POST |
Optimal Size /bess/optimal |
Pro plan. Full multi-scenario BESS sizing with complete financial model. Returns sizing across all 3 NREL ATB 2024 cost scenarios (conservative, moderate, advanced), NPV and IRR… |
| POST |
Solar Plus BESS /bess/solar-plus |
Pro plan. Co-optimised solar and BESS sizing in a single call. Sizes BESS for peak shaving and TOU arbitrage alongside an existing or proposed solar system. Returns four… |
| POST |
Quick Size /bess/quick |
Free endpoint. Fast commercial BESS sizing from peak demand, state, and electricity rate. Returns optimal BESS power (kW) and nameplate energy (kWh) using the Load Duration Curve… |
| reference | ||
| GET |
Methodology & Citations /reference/methodology |
Returns the complete citation register and methodology documentation — CAPEX formula with ATB source, LCOS formula with PNNL validation range, sizing algorithm reference, RTE… |
| GET |
Chemistry Database /reference/chemistry |
Returns the full battery chemistry parameter database — round-trip efficiency (AC-AC), cycle life, depth of discharge, calendar life, pack cost per kWh and BOS cost per kW across… |
| GET |
State Rates /reference/states |
Returns the commercial demand charge rate ($/kW/month) and TOU peak-to-off-peak spread ($/kWh) for all supported US states. Source: OpenEI Utility Rate Database (2024),… |
| Other endpoints | ||
| GET |
API Info / |
Returns API version, tagline, and a full directory of all endpoints with one-line descriptions. Confirms the correct API is connected. |
Solar + BESS Sizing & Dispatch Optimization API pricing
| Plan | Price | Rate limit | Quotas |
|---|---|---|---|
| BASIC | Free | — |
|
| PRO | $49 / month | 60 / minute |
|
| ULTRA | $149 / month | 300 / minute |
|