{% extends "core/base.html" %}
{% block title %}Solar planner{% endblock %}
{% block content %}
<h1>Rooftop solar planner</h1>
<p class="muted">Roof {{ plan.roof_area_m2|floatformat:"-1" }} m&sup2; and sanctioned load {{ sanctioned }} kW allow up to <b>{{ max_size }} kWp</b>.
  {{ plan.get_export_mode_display }}, {{ plan.escalation|floatformat:"-3" }} yearly tariff escalation. <a href="{% url 'solar_settings' h.pk %}">Change assumptions</a></p>
{% if not results %}
<p>The roof or sanctioned load is too small for a 1 kWp system.</p>
{% else %}
{% if best %}
<div class="stats">
  <div class="stat accent"><span>Recommended size</span><b>{{ best.size_kwp|floatformat:"-1" }} kWp</b><small>highest 25-year NPV within limits</small></div>
  <div class="stat"><span>Payback</span><b>{{ best.payback|floatformat:1 }} years</b><small>after subsidy of Rs {{ best.subsidy|floatformat:"0g" }}</small></div>
  <div class="stat"><span>IRR</span><b>{{ best.irr_pct|floatformat:1 }}%</b><small>25 years</small></div>
  <div class="stat"><span>NPV</span><b>Rs {{ best.npv|floatformat:"0g" }}</b><small>at {% widthratio plan.discount_rate 1 100 %}% discount rate</small></div>
</div>
{% else %}<p class="flag drop">No size has a positive NPV under these assumptions.</p>{% endif %}

<section class="card">
  <h2>Size options</h2>
  <table>
    <tr><th>kWp</th><th class="n">Capex (Rs)</th><th class="n">Subsidy (Rs)</th><th class="n">Year-1 saving (Rs)</th><th class="n">Payback</th><th class="n">IRR</th><th class="n">25-yr NPV (Rs)</th><th></th></tr>
    {% for r in results %}
    <tr class="{% if best and r.size_kwp == best.size_kwp %}best{% endif %}{% if r.size_kwp == selected.size_kwp %} sel{% endif %}"><td>{{ r.size_kwp|floatformat:"-1" }}</td><td class="n">{{ r.capex|floatformat:"0g" }}</td><td class="n">{{ r.subsidy|floatformat:"0g" }}</td><td class="n">{{ r.year1.savings|floatformat:"0g" }}</td>
      <td class="n">{% if r.payback %}{{ r.payback|floatformat:1 }} yr{% else %}-{% endif %}</td><td class="n">{% if r.irr is not None %}{{ r.irr_pct|floatformat:1 }}%{% else %}-{% endif %}</td><td class="n">{{ r.npv|floatformat:"0g" }}</td>
      <td><a href="?size={{ r.size_kwp }}">view</a></td></tr>
    {% endfor %}
  </table>
</section>
<div class="cols">
  <section class="card"><h2>NPV by system size (Rs)</h2>{{ npv_chart }}</section>
  <section class="card"><h2>Cumulative cash flow, {{ selected.size_kwp|floatformat:"-1" }} kWp (Rs, by year)</h2>{{ cash_chart }}</section>
</div>
<section class="card">
  <h2>{{ selected.size_kwp|floatformat:"-1" }} kWp: monthly consumption vs generation (units)</h2>
  <div class="legend"><span><i class="bar-a"></i>Consumption</span><span><i class="bar-b"></i>Generation</span></div>
  {{ gen_chart }}
  <p>Generates {{ gen_year|floatformat:0 }} units in year 1, of which {{ self_pct|floatformat:0 }}% is used directly and the rest exported. Year-1 bill saving Rs {{ year1_savings|floatformat:"0g" }}.</p>
  <table>
    <tr><th>Month</th><th class="n">Consumption</th><th class="n">Generation</th><th class="n">Used directly</th><th class="n">Exported</th><th class="n">Billed units</th><th class="n">Bill without (Rs)</th><th class="n">Bill with (Rs)</th></tr>
    {% for name, m in months %}<tr><td>{{ name }}</td><td class="n">{{ m.consumption|floatformat:0 }}</td><td class="n">{{ m.generation|floatformat:0 }}</td><td class="n">{{ m.self_used|floatformat:0 }}</td><td class="n">{{ m.exported|floatformat:0 }}</td><td class="n">{{ m.billed_units|floatformat:0 }}</td><td class="n">{{ m.bill_without|floatformat:0 }}</td><td class="n">{{ m.bill_with|floatformat:0 }}</td></tr>{% endfor %}
  </table>
</section>
{% endif %}
{% endblock %}