diff --git a/Dockerfile b/Dockerfile
index f1b1347..1396a7e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,18 +4,25 @@ ENV PYTHONUNBUFFERED=1 \
     PYTHONDONTWRITEBYTECODE=1 \
     PIP_DISABLE_PIP_VERSION_CHECK=1 \
     PIP_NO_CACHE_DIR=1 \
-    PORT=8080
+    PYTHONPATH=/app/src
 
 WORKDIR /app
 
-COPY pyproject.toml uv.lock README.md ./
-COPY src ./src
-
+# Install dependencies only (not the package itself), so the source tree at
+# /app stays the runtime layout the app expects: web.py uses
+# Path(__file__).resolve().parents[2] / "data" / "raw" to find CSVs, which
+# only resolves correctly when the package is imported from /app/src.
+COPY pyproject.toml uv.lock ./
 RUN pip install --no-cache-dir uv \
- && uv pip install --system --no-cache .
+ && uv pip install --system --no-cache \
+      "pandas>=2.2" "scipy>=1.13" "numpy>=2.0" "flask>=3.0" "gunicorn>=21.0"
 
+COPY src ./src
 COPY data ./data
 
 EXPOSE 8080
 
-CMD ["sh", "-c", "gunicorn pluginbattery.web:app --bind 0.0.0.0:${PORT:-8080} --workers 1 --timeout 120"]
+CMD ["gunicorn", "pluginbattery.web:app", \
+     "--bind", "0.0.0.0:8080", \
+     "--workers", "1", \
+     "--timeout", "120"]
diff --git a/src/pluginbattery/static/app.js b/src/pluginbattery/static/app.js
index 99cfb96..f3938e8 100644
--- a/src/pluginbattery/static/app.js
+++ b/src/pluginbattery/static/app.js
@@ -9,14 +9,37 @@ const tbody   = document.getElementById("leaderboard-body");
 const countEl = document.getElementById("count");
 const elapsed = document.getElementById("elapsed");
 const bestEl  = document.getElementById("best-content");
-const pluginOnly = document.getElementById("plugin-only");
+const filterBoxes = Array.from(document.querySelectorAll('.filter-toggle input[data-cat]'));
+const FILTER_KEY = "pluginbattery_categories";
 
-const PLUGIN_POWER_LIMIT_KW = 0.8;
-const FILTER_KEY = "pluginbattery_plugin_only";
-
-// Latest fetched dataset; the filter toggle re-paints from this.
+// Latest fetched dataset; the filter toggles re-paint from this.
 let lastBatteries = null;
 
+function categorize(b) {
+  // Use the category provided by the API, or fall back to power-class for the
+  // SSR-captured rows which only have power_kw.
+  if (b.category) return b.category;
+  if (b.allows_export) return "hybrid";
+  return b.power_kw <= 0.8 + 1e-9 ? "small_plugin" : "large_plugin";
+}
+
+function selectedCategories() {
+  return new Set(filterBoxes.filter((c) => c.checked).map((c) => c.dataset.cat));
+}
+
+function persistFilter() {
+  localStorage.setItem(FILTER_KEY, JSON.stringify([...selectedCategories()]));
+}
+
+function restoreFilter() {
+  try {
+    const saved = JSON.parse(localStorage.getItem(FILTER_KEY) || "null");
+    if (Array.isArray(saved)) {
+      filterBoxes.forEach((c) => { c.checked = saved.includes(c.dataset.cat); });
+    }
+  } catch (_) { /* keep defaults */ }
+}
+
 function fmtNum(x, decimals = 2) {
   return x === null || x === undefined ? "—" : Number(x).toFixed(decimals);
 }
@@ -104,8 +127,9 @@ function renderTable(rows) {
 }
 
 function applyFilter(batteries) {
-  if (!pluginOnly.checked) return batteries;
-  return batteries.filter((b) => b.power_kw <= PLUGIN_POWER_LIMIT_KW + 1e-9);
+  const cats = selectedCategories();
+  if (cats.size === 0) return [];   // nothing checked → show nothing
+  return batteries.filter((b) => cats.has(categorize(b)));
 }
 
 function repaint() {
@@ -150,29 +174,27 @@ function captureInitialFromDOM() {
   lastBatteries = rows.map((tr) => {
     const cells = tr.children;
     const link = cells[1].querySelector("a");
+    const storeText = cells[7].textContent.trim();
     return {
-      title: (link ? link.textContent : cells[1].textContent).trim(),
-      url: link ? link.href : "",
+      category:     tr.dataset.category || null,
+      title:        (link ? link.textContent : cells[1].textContent).trim(),
+      url:          link ? link.href : "",
       capacity_kwh: parseFloat(cells[2].textContent),
       power_kw:     parseFloat(cells[3].textContent),
       price_eur:    parseFloat(cells[4].textContent.replace("€", "")),
       lp_year1:     parseFloat(cells[5].textContent.replace("€", "")),
       lp_payback:   cells[6].textContent.trim() === "—" ? null : parseFloat(cells[6].textContent),
-      store_year1:  parseFloat(cells[7].textContent.replace("€", "")),
+      store_year1:  storeText === "—" ? null : parseFloat(storeText.replace("€", "")),
       store_payback: cells[8].textContent.trim() === "—" ? null : parseFloat(cells[8].textContent),
       overstatement: cells[9].textContent.trim() === "—" ? null : parseFloat(cells[9].textContent),
     };
   });
 }
 
-// Restore filter state from localStorage and wire up listeners.
-pluginOnly.checked = localStorage.getItem(FILTER_KEY) === "true";
-pluginOnly.addEventListener("change", () => {
-  localStorage.setItem(FILTER_KEY, pluginOnly.checked);
-  repaint();
-});
+restoreFilter();
+filterBoxes.forEach((c) => c.addEventListener("change", () => { persistFilter(); repaint(); }));
 
 captureInitialFromDOM();
-if (pluginOnly.checked) repaint();   // honour saved filter on load
+repaint();   // honour saved filter on first paint
 
 form.addEventListener("submit", (e) => { e.preventDefault(); recalc(); });
diff --git a/src/pluginbattery/static/style.css b/src/pluginbattery/static/style.css
index 897771f..454c4f3 100644
--- a/src/pluginbattery/static/style.css
+++ b/src/pluginbattery/static/style.css
@@ -125,12 +125,17 @@ section#results {
 .card h2 { margin: 0 0 1rem; font-size: 1rem; font-weight: 600; letter-spacing: 0.02em; text-transform: uppercase; color: var(--muted); }
 .card h2 small { font-weight: 400; text-transform: none; opacity: 0.8; margin-left: 0.5rem; }
 
+.filters {
+  display: flex;
+  gap: 1.25rem;
+  flex-wrap: wrap;
+  margin-bottom: 0.85rem;
+  font-size: 0.85rem;
+}
 .filter-toggle {
   display: inline-flex;
   align-items: center;
   gap: 0.4rem;
-  margin-left: 1rem;
-  font-size: 0.8rem;
   font-weight: 400;
   text-transform: none;
   letter-spacing: 0;
diff --git a/src/pluginbattery/templates/index.html b/src/pluginbattery/templates/index.html
index 93e0796..3861725 100644
--- a/src/pluginbattery/templates/index.html
+++ b/src/pluginbattery/templates/index.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Honest battery payback — vs thuisbatterijgids.nl</title>
-<link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}?v=5">
+<link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}?v=6">
 </head>
 <body>
 
@@ -81,8 +81,12 @@
       <h2>
         Full leaderboard
         <small id="meta">(<span id="count">{{ initial.batteries|length }}</span> batteries · <span id="elapsed">{{ initial.elapsed_seconds }}</span>s)</small>
-        <label class="filter-toggle"><input type="checkbox" id="plugin-only"> plug-in only (≤ 0.8 kW, no electrician)</label>
       </h2>
+      <div class="filters">
+        <label class="filter-toggle"><input type="checkbox" data-cat="small_plugin" checked> ≤ 0.8 kW plug-in (no electrician)</label>
+        <label class="filter-toggle"><input type="checkbox" data-cat="large_plugin" checked> ≤ 2.5 kW plug-in (own circuit)</label>
+        <label class="filter-toggle"><input type="checkbox" data-cat="hybrid"        checked> Hybrid / DC-coupled</label>
+      </div>
       <table id="leaderboard">
         <thead>
           <tr>
@@ -100,7 +104,7 @@
         </thead>
         <tbody id="leaderboard-body">
           {% for r in initial.batteries %}
-          <tr>
+          <tr data-category="{{ r.category }}">
             <td>{{ loop.index }}</td>
             <td><a href="{{ r.url }}" target="_blank" rel="noopener">{{ r.title }}</a></td>
             <td>{{ '%.2f' % r.capacity_kwh }}</td>
@@ -108,7 +112,7 @@
             <td>€{{ '%.0f' % r.price_eur }}</td>
             <td>€{{ '%.0f' % r.lp_year1 }}</td>
             <td>{% if r.lp_payback %}{{ '%.1f' % r.lp_payback }}{% else %}—{% endif %}</td>
-            <td>€{{ '%.0f' % r.store_year1 }}</td>
+            <td>{% if r.store_year1 is not none %}€{{ '%.0f' % r.store_year1 }}{% else %}—{% endif %}</td>
             <td>{% if r.store_payback %}{{ '%.1f' % r.store_payback }}{% else %}—{% endif %}</td>
             <td>{% if r.overstatement %}{{ '%.2f' % r.overstatement }}×{% else %}—{% endif %}</td>
           </tr>
@@ -128,6 +132,6 @@
   </p>
 </footer>
 
-<script src="{{ url_for('static', filename='app.js') }}?v=5"></script>
+<script src="{{ url_for('static', filename='app.js') }}?v=6"></script>
 </body>
 </html>
diff --git a/src/pluginbattery/web.py b/src/pluginbattery/web.py
index e4cdca1..4cc7fd4 100644
--- a/src/pluginbattery/web.py
+++ b/src/pluginbattery/web.py
@@ -49,6 +49,35 @@ _AVG_CONSUMER_BASE = float(_BASE_DF["eur_per_kwh"].mean())
 with open(DATA_DIR / "thuisbatterijgids_catalog.json") as _f:
     _CATALOG = json.load(_f)
 
+# Hybrid / DC-coupled units — not on thuisbatterijgids.net (they only list
+# plug-in), but useful as a reference point. Prices are NL street price incl.
+# a typical install (since these can't be self-installed). Mark with
+# installation == "hybrid" so the LP runs with allows_export=True.
+HYBRID_EXTRAS = [
+    {
+        "id": -1,
+        "title": "Tesla Powerwall 3 (installed)",
+        "url": "https://www.tesla.com/powerwall",
+        "brand": "Tesla",
+        "brand_slug": "tesla",
+        "capacity": 13.5,
+        "power_continuous": 11500,
+        "price": 9500,
+        "price_per_kwh": 704,
+        "review_score": None,
+        "recommended": False,
+        "installation": "hybrid",
+        "image_url": "",
+    },
+]
+_CATALOG = _CATALOG + HYBRID_EXTRAS
+
+
+def _category(power_kw: float, allows_export: bool) -> str:
+    if allows_export:
+        return "hybrid"
+    return "small_plugin" if power_kw <= 0.8 + 1e-9 else "large_plugin"
+
 print(f"  {len(_BASE_DF)} hourly rows, {len(_CATALOG)} batteries in catalog.", flush=True)
 
 # scenario hash → result dict
@@ -71,10 +100,10 @@ def _worker_init(df, eta):
 
 
 def _worker_run_lp(spec):
-    cap, pw = spec
+    cap, pw, allows_export = spec
     bat = Battery(
         capacity_kwh=cap, max_charge_kw=pw, max_discharge_kw=pw,
-        round_trip_eff=_WORKER_ETA, allows_export=False,
+        round_trip_eff=_WORKER_ETA, allows_export=allows_export,
     )
     out = simulate(_WORKER_DF, bat, oracle_daily_schedule(_WORKER_DF, bat))
     return spec, float(out["savings"].sum())
@@ -123,7 +152,7 @@ def compute_leaderboard(
     # the per-spec LPs in parallel. linprog/HiGHS release the GIL so threads
     # give a near-linear speedup on this VM (4 cores).
     valid_rows = []
-    specs: set[tuple[float, float]] = set()
+    specs: set[tuple[float, float, bool]] = set()
     for b in _CATALOG:
         try:
             cap = float(b["capacity"])
@@ -133,8 +162,9 @@ def compute_leaderboard(
             continue
         if cap <= 0 or pw <= 0 or price <= 0:
             continue
-        valid_rows.append((b, cap, pw, price))
-        specs.add((round(cap, 3), round(pw, 3)))
+        allows_export = b.get("installation") == "hybrid"
+        valid_rows.append((b, cap, pw, price, allows_export))
+        specs.add((round(cap, 3), round(pw, 3), allows_export))
 
     # Cache key for "what does this LP depend on?" — everything that goes
     # into the dataframe construction plus eta. Inflation isn't in here, so
@@ -169,17 +199,27 @@ def compute_leaderboard(
     lp_cache = cached_results
 
     rows = []
-    for b, cap, pw, price in valid_rows:
-        lp_year1 = lp_cache[(round(cap, 3), round(pw, 3))]
+    for b, cap, pw, price, allows_export in valid_rows:
+        lp_year1 = lp_cache[(round(cap, 3), round(pw, 3), allows_export)]
         lp_payback = payback_years(lp_year1, price, inflation)
 
-        scn = Scenario(
-            capacity_kwh=cap, max_charge_kw=pw, battery_cost_eur=price,
-            avg_retail_eur_per_kwh=retail,
-            has_pv=pv_kwp > 0, has_saldering=saldering,
-            dynamic_rate=not fixed_rate,
-        )
-        sq = store_quote(scn, store_params, inflation=inflation)
+        # The store calculator on thuisbatterijgids.net only models plug-in;
+        # quoting it for a hybrid would invent numbers, so leave blank.
+        if allows_export:
+            store_y1 = None
+            store_pay = None
+            overstate = None
+        else:
+            scn = Scenario(
+                capacity_kwh=cap, max_charge_kw=pw, battery_cost_eur=price,
+                avg_retail_eur_per_kwh=retail,
+                has_pv=pv_kwp > 0, has_saldering=saldering,
+                dynamic_rate=not fixed_rate,
+            )
+            sq = store_quote(scn, store_params, inflation=inflation)
+            store_y1 = round(sq["year1_total"], 2)
+            store_pay = round(sq["payback_years"], 2) if np.isfinite(sq["payback_years"]) else None
+            overstate = round(sq["year1_total"] / lp_year1, 2) if lp_year1 > 0 else None
 
         rows.append({
             "title": b["title"],
@@ -187,11 +227,13 @@ def compute_leaderboard(
             "capacity_kwh": cap,
             "power_kw": pw,
             "price_eur": price,
+            "category": _category(pw, allows_export),
+            "allows_export": allows_export,
             "lp_year1": round(lp_year1, 2),
             "lp_payback": round(lp_payback, 2) if np.isfinite(lp_payback) else None,
-            "store_year1": round(sq["year1_total"], 2),
-            "store_payback": round(sq["payback_years"], 2) if np.isfinite(sq["payback_years"]) else None,
-            "overstatement": round(sq["year1_total"] / lp_year1, 2) if lp_year1 > 0 else None,
+            "store_year1": store_y1,
+            "store_payback": store_pay,
+            "overstatement": overstate,
             "url": b.get("url", ""),
             "image_url": b.get("image_url", ""),
         })