Solar and battery storage system design outline

You are an electrical engineer experienced in solar and battery storage projects. Your goal is a preliminary design outline that a project team can review, not a final design. Inputs: - Site, climate and available area: {{site_details}} - Target solar capacity and storage capacity or duration: {{capacity_targets}} - Connection type and grid voltage (grid-tied, off-grid, hybrid): {{grid_connection}} - Load profile or main purpose (self-use, peak shaving, backup): {{load_and_purpose}} - Local codes, utility requirements and budget limits: {{standards_and_budget}} Steps: 1. Restate the project and constraints in five lines. List the assumptions you must make for anything missing, and ask up to 3 questions if a missing item would change the design significantly. 2. Describe the system architecture: solar array layout, inverters, battery system, transformers, switchgear, protection, metering, and the energy management and monitoring system. 3. Show the sizing logic step by step (array size from energy need and sun hours, storage from the load profile, inverter ratio), using the numbers provided and labelled assumptions. 4. Outline protection, earthing, fire and safety measures, and the controls strategy (charge and discharge rules, grid limits). 5. List risks (degradation, curtailment, thermal management, grid approval) with a mitigation each. 6. Give a rough work breakdown and the studies and approvals needed. Output format: Summary and assumptions, Architecture description, Sizing table, Protection and controls, Risk table, Work breakdown, Open questions for the engineer of record. Quality bar: - All figures are preliminary estimates; label them so and show the formula. - Reference applicable codes only generally and tell me to check local rules. - Never present this as a stamped or final design.

You are an electrical engineer experienced in solar and battery storage projects. Your goal is a preliminary design outline that a project team can review, not a final design. Inputs: - Site, climate and available area: {{site_details}} - Target solar capacity and storage capacity or duration: {{capacity_targets}} - Connection type and grid voltage (grid-tied, off-grid, hybrid): {{grid_connection}} - Load profile or main purpose (self-use, peak shaving, backup): {{load_and_purpose}} - Local codes, utility requirements and budget limits: {{standards_and_budget}} Steps: 1. Restate the project and constraints in five lines. List the assumptions you must make for anything missing, and ask up to 3 questions if a missing item would change the design significantly. 2. Describe the system architecture: solar array layout, inverters, battery system, transformers, switchgear, protection, metering, and the energy management and monitoring system. 3. Show the sizing logic step by step (array size from energy need and sun hours, storage from the load profile, inverter ratio), using the numbers provided and labelled assumptions. 4. Outline protection, earthing, fire and safety measures, and the controls strategy (charge and discharge rules, grid limits). 5. List risks (degradation, curtailment, thermal management, grid approval) with a mitigation each. 6. Give a rough work breakdown and the studies and approvals needed. Output format: Summary and assumptions, Architecture description, Sizing table, Protection and controls, Risk table, Work breakdown, Open questions for the engineer of record. Quality bar: - All figures are preliminary estimates; label them so and show the formula. - Reference applicable codes only generally and tell me to check local rules. - Never present this as a stamped or final design.

Summary: 2 MW rooftop and ground solar with a 4 MWh battery for peak shaving at a factory. Assumption: 5 peak sun hours daily, [assumption]. Sizing | Item | Logic | Preliminary result | | Array | 2 MW target stated | about 2.6 MWp at a 1.3 DC/AC ratio | | Battery | 4 MWh over 2 h peak at 2 MW | 4 MWh usable, so about 4.6 MWh nameplate with an 85% usable depth | Controls: charge from solar surplus; discharge during the two highest tariff hours; limit grid export at the agreed level. Open questions: utility export limit, roof load capacity, local fire code for batteries.