diff --git a/ui-demo/src/main/java/de/cotto/lndmanagej/ui/demo/data/DemoDataService.java b/ui-demo/src/main/java/de/cotto/lndmanagej/ui/demo/data/DemoDataService.java
index d86fae04..9e8fbb7e 100644
--- a/ui-demo/src/main/java/de/cotto/lndmanagej/ui/demo/data/DemoDataService.java
+++ b/ui-demo/src/main/java/de/cotto/lndmanagej/ui/demo/data/DemoDataService.java
@@ -39,13 +39,13 @@ public class DemoDataService extends UiDataService {
             "c-otto.de",
             "027ce055380348d7812d2ae7745701c9f93e70c1adeb2657f053f91df4f2843c71",
             1_500,
-            20_000_000);
+            19_998_500);
     public static final OpenChannelDto ACINQ = createOpenChannel(
             "799999x456x2",
             "ACINQ",
             "03864ef025fde8fb587d989186ce6a4a186895ee44a926bfc370e2c366597a3f8f",
-            600_100,
-            2_500_000);
+            500_100,
+            2_499_900);
     public static final OpenChannelDto TRY_BITCOIN = createOpenChannel(
             "799999x456x3",
             "try-bitcoin.com",
@@ -57,19 +57,19 @@ public class DemoDataService extends UiDataService {
             "Kraken 🐙⚡",
             "02f1a8c87607f415c8f22c00593002775941dea48869ce23096af27b0cfdcc0b69",
             5_050_000,
-            8_000_000);
+            8_450_000);
     public static final OpenChannelDto POCKET = createOpenChannel(
             "799999x456x5",
             "PocketBitcoin.com",
             "02765a281bd188e80a89e6ea5092dcb8ebaaa5c5da341e64327e3fadbadcbc686c",
             10_500_900,
-            12_000_000);
+            11_499_100);
     public static final OpenChannelDto B_CASH_IS_TRASH = createOpenChannel(
             "799999x456x6",
             "BCash_Is_Trash",
             "0298f6074a454a1f5345cb2a7c6f9fce206cd0bf675d177cdbf0ca7508dd28852f",
             11_100_600,
-            9_800_400);
+            8_899_400);
     public static final OpenChannelDto WOS = createOpenChannel(
             "799999x456x7",
             "WalletOfSatoshi.com",
@@ -80,13 +80,13 @@ public class DemoDataService extends UiDataService {
             "799999x456x8",
             "ACINQ",
             "03864ef025fde8fb587d989186ce6a4a186895ee44a926bfc370e2c366597a3f8f",
-            12_400_100,
-            1_500_900);
+            11_899_100,
+            1_600_900);
     public static final OpenChannelDto B_CASH_IS_TRASH2 = createOpenChannel(
             "799999x456x9",
             "BCash_Is_Trash",
             "0298f6074a454a1f5345cb2a7c6f9fce206cd0bf675d177cdbf0ca7508dd28852f",
-            19_000_100,
+            18_099_100,
             900_900);
 
     public static final NodeWithWarningsDto ACINQ_WARNING = createNodeWithWarnings(
@@ -164,17 +164,18 @@ public class DemoDataService extends UiDataService {
             long remote
     ) {
         ChannelId channelId = ChannelId.fromCompactForm(compactChannelId);
-        return new OpenChannelDto(
-                channelId,
-                alias,
-                Pubkey.create(pubkey),
-                PoliciesDto.createFromModel(derivePolicies(channelId)),
-                BalanceInformationDto.createFromModel(new BalanceInformation(
-                        Coins.ofSatoshis(local),
-                        Coins.ofSatoshis(200),
-                        Coins.ofSatoshis(remote),
-                        Coins.ofSatoshis(500)
-                )));
+        Pubkey remotePubkey = Pubkey.create(pubkey);
+        PoliciesDto policies = PoliciesDto.createFromModel(derivePolicies(channelId));
+        long localReserve = 200;
+        long remoteReserve = 500;
+        long capacity = local + remote;
+        BalanceInformationDto balance = BalanceInformationDto.createFromModel(new BalanceInformation(
+                Coins.ofSatoshis(local),
+                Coins.ofSatoshis(localReserve),
+                Coins.ofSatoshis(remote),
+                Coins.ofSatoshis(remoteReserve)
+        ));
+        return new OpenChannelDto(channelId, alias, remotePubkey, policies, balance, capacity);
     }
 
     private static ChannelDetailsDto createChannelDetails(OpenChannelDto channel) {
@@ -184,6 +185,7 @@ public class DemoDataService extends UiDataService {
                 channel.remoteAlias(),
                 deriveOpenInitiator(channel.channelId()),
                 channel.balanceInformation(),
+                channel.capacitySat(),
                 deriveOnChainCosts(channel.channelId()),
                 channel.policies(),
                 deriveFeeReport(channel.channelId()),
diff --git a/ui/src/integrationTest/java/de/cotto/lndmanagej/ui/SearchControllerIT.java b/ui/src/integrationTest/java/de/cotto/lndmanagej/ui/SearchControllerIT.java
index 8f4fd4e9..46854128 100644
--- a/ui/src/integrationTest/java/de/cotto/lndmanagej/ui/SearchControllerIT.java
+++ b/ui/src/integrationTest/java/de/cotto/lndmanagej/ui/SearchControllerIT.java
@@ -126,7 +126,9 @@ class SearchControllerIT extends BaseControllerIT {
                 channelDetails.remoteAlias(),
                 channelDetails.remotePubkey(),
                 channelDetails.policies(),
-                channelDetails.balanceInformation());
+                channelDetails.balanceInformation(),
+                channelDetails.capacitySat()
+        );
     }
 
     public NodeDto nodeDto(OpenChannelDto channel) {
diff --git a/ui/src/main/java/de/cotto/lndmanagej/ui/UiDataServiceImpl.java b/ui/src/main/java/de/cotto/lndmanagej/ui/UiDataServiceImpl.java
index e9e78b79..e5749a34 100644
--- a/ui/src/main/java/de/cotto/lndmanagej/ui/UiDataServiceImpl.java
+++ b/ui/src/main/java/de/cotto/lndmanagej/ui/UiDataServiceImpl.java
@@ -65,11 +65,12 @@ public class UiDataServiceImpl extends UiDataService {
 
     private OpenChannelDto toOpenChannelDto(ChannelId channelId) {
         LocalChannel localChannel = channelService.getLocalChannel(channelId).orElseThrow();
-        Pubkey remotePubkey = localChannel.getRemotePubkey();
-        String alias = nodeController.getAlias(remotePubkey);
+        Pubkey pubkey = localChannel.getRemotePubkey();
+        long capacitySat = localChannel.getCapacity().satoshis();
+        String alias = nodeController.getAlias(pubkey);
         PoliciesDto policies = channelController.getPolicies(channelId);
         BalanceInformationDto balance = channelController.getBalance(channelId);
-        return new OpenChannelDto(channelId, alias, remotePubkey, policies, balance);
+        return new OpenChannelDto(channelId, alias, pubkey, policies, balance, capacitySat);
     }
 
     @Override
@@ -81,6 +82,7 @@ public class UiDataServiceImpl extends UiDataService {
                 details.remoteAlias(),
                 details.openInitiator(),
                 details.balance(),
+                Long.parseLong(details.capacitySat()),
                 details.onChainCosts(),
                 details.policies(),
                 details.feeReport(),
diff --git a/ui/src/main/java/de/cotto/lndmanagej/ui/dto/ChannelDetailsDto.java b/ui/src/main/java/de/cotto/lndmanagej/ui/dto/ChannelDetailsDto.java
index b6ebae24..e64c6476 100644
--- a/ui/src/main/java/de/cotto/lndmanagej/ui/dto/ChannelDetailsDto.java
+++ b/ui/src/main/java/de/cotto/lndmanagej/ui/dto/ChannelDetailsDto.java
@@ -18,6 +18,7 @@ public record ChannelDetailsDto(
         String remoteAlias,
         OpenInitiator openInitiator,
         BalanceInformationDto balanceInformation,
+        long capacitySat,
         OnChainCostsDto onChainCosts,
         PoliciesDto policies,
         FeeReportDto feeReport,
diff --git a/ui/src/main/java/de/cotto/lndmanagej/ui/dto/OpenChannelDto.java b/ui/src/main/java/de/cotto/lndmanagej/ui/dto/OpenChannelDto.java
index 845a9bd2..beaaee2e 100644
--- a/ui/src/main/java/de/cotto/lndmanagej/ui/dto/OpenChannelDto.java
+++ b/ui/src/main/java/de/cotto/lndmanagej/ui/dto/OpenChannelDto.java
@@ -10,7 +10,8 @@ public record OpenChannelDto(
         String remoteAlias,
         Pubkey remotePubkey,
         PoliciesDto policies,
-        BalanceInformationDto balanceInformation
+        BalanceInformationDto balanceInformation,
+        long capacitySat
 ) {
 
     public String getRatio() {
diff --git a/ui/src/main/resources/templates/fragments/channel-collections.html b/ui/src/main/resources/templates/fragments/channel-collections.html
index 14ec4416..6b7f9399 100644
--- a/ui/src/main/resources/templates/fragments/channel-collections.html
+++ b/ui/src/main/resources/templates/fragments/channel-collections.html
@@ -9,6 +9,7 @@
             <th scope="col" style="text-align: right;">Inbound</th>
             <th scope="col" style="text-align: center;">Ratio</th>
             <th scope="col" style="text-align: right;">Outbound</th>
+            <th scope="col" style="text-align: right;">Capacity</th>
             <th scope="col" style="text-align: right;">Base Fee (local)</th>
             <th scope="col" style="text-align: right;">Fee Rate (local)</th>
             <th scope="col" style="text-align: right;">Base Fee (remote)</th>
@@ -22,6 +23,7 @@
             <td th:text="${@formatter.formatNumber(channel.inbound)}" style="color: darkRed; text-align: right; padding-left:0;"></td>
             <td th:text="${channel.ratio}"></td>
             <td th:text="${@formatter.formatNumber(channel.outbound)}" style="color: darkGreen; text-align: right;"></td>
+            <td th:text="${@formatter.formatNumber(channel.capacitySat)}" style="text-align: right;"></td>
             <td th:text="${@formatter.formatNumber(channel.policies.local.baseFeeMilliSat)}" style="text-align: right;"></td>
             <td th:text="${@formatter.formatNumber(channel.policies.local.feeRatePpm)}" style="text-align: right;"></td>
             <td th:text="${@formatter.formatNumber(channel.policies.remote.baseFeeMilliSat)}" style="text-align: right;"></td>
diff --git a/ui/src/test/java/de/cotto/lndmanagej/ui/UiDataServiceImplTest.java b/ui/src/test/java/de/cotto/lndmanagej/ui/UiDataServiceImplTest.java
index e4bd8eeb..a29d0661 100644
--- a/ui/src/test/java/de/cotto/lndmanagej/ui/UiDataServiceImplTest.java
+++ b/ui/src/test/java/de/cotto/lndmanagej/ui/UiDataServiceImplTest.java
@@ -29,6 +29,7 @@ import java.util.Optional;
 import java.util.Set;
 
 import static de.cotto.lndmanagej.controller.dto.NodeDetailsDtoFixture.NODE_DETAILS_DTO;
+import static de.cotto.lndmanagej.controller.dto.OpenChannelDtoFixture.CAPACITY_SAT;
 import static de.cotto.lndmanagej.model.BalanceInformationFixtures.BALANCE_INFORMATION;
 import static de.cotto.lndmanagej.model.ChannelDetailsFixtures.CHANNEL_DETAILS;
 import static de.cotto.lndmanagej.model.ChannelIdFixtures.CHANNEL_ID;
@@ -90,7 +91,7 @@ class UiDataServiceImplTest {
         when(statusController.getOpenChannels()).thenReturn(new ChannelsDto(List.of(CHANNEL_ID)));
 
         assertThat(uiDataService.getOpenChannels()).containsExactly(
-                new OpenChannelDto(CHANNEL_ID, alias, PUBKEY_2, policies, balance)
+                new OpenChannelDto(CHANNEL_ID, alias, PUBKEY_2, policies, balance, CAPACITY_SAT)
         );
     }
 
@@ -104,6 +105,7 @@ class UiDataServiceImplTest {
                         ALIAS,
                         LOCAL,
                         BalanceInformationDto.createFromModel(BALANCE_INFORMATION),
+                        CAPACITY_SAT,
                         OnChainCostsDto.createFromModel(ON_CHAIN_COSTS),
                         PoliciesDto.createFromModel(POLICIES_FOR_LOCAL_CHANNEL),
                         FeeReportDto.createFromModel(FEE_REPORT),
diff --git a/ui/src/test/java/de/cotto/lndmanagej/ui/controller/DashboardControllerTest.java b/ui/src/test/java/de/cotto/lndmanagej/ui/controller/DashboardControllerTest.java
index 739c5b2a..54b99d3c 100644
--- a/ui/src/test/java/de/cotto/lndmanagej/ui/controller/DashboardControllerTest.java
+++ b/ui/src/test/java/de/cotto/lndmanagej/ui/controller/DashboardControllerTest.java
@@ -21,6 +21,7 @@ import org.springframework.ui.Model;
 import java.util.List;
 import java.util.Map;
 
+import static de.cotto.lndmanagej.controller.dto.OpenChannelDtoFixture.CAPACITY_SAT;
 import static de.cotto.lndmanagej.controller.dto.OpenChannelDtoFixture.OPEN_CHANNEL_DTO;
 import static de.cotto.lndmanagej.model.BalanceInformationFixtures.REMOTE_BALANCE;
 import static de.cotto.lndmanagej.model.ChannelIdFixtures.CHANNEL_ID;
@@ -88,7 +89,8 @@ class DashboardControllerTest {
                 "Albert",
                 PUBKEY,
                 PoliciesDto.createFromModel(POLICIES_FOR_LOCAL_CHANNEL),
-                BalanceInformationDto.createFromModel(balanceInformation)
+                BalanceInformationDto.createFromModel(balanceInformation),
+                CAPACITY_SAT
         );
     }
 }
diff --git a/ui/src/test/java/de/cotto/lndmanagej/ui/dto/ChannelDetailsDtoTest.java b/ui/src/test/java/de/cotto/lndmanagej/ui/dto/ChannelDetailsDtoTest.java
index 0e049e29..69139f1c 100644
--- a/ui/src/test/java/de/cotto/lndmanagej/ui/dto/ChannelDetailsDtoTest.java
+++ b/ui/src/test/java/de/cotto/lndmanagej/ui/dto/ChannelDetailsDtoTest.java
@@ -49,6 +49,11 @@ class ChannelDetailsDtoTest {
                 .isEqualTo(BalanceInformationDto.createFromModel(BALANCE_INFORMATION));
     }
 
+    @Test
+    void capacitySat() {
+        assertThat(CHANNEL_DETAILS_DTO.capacitySat()).isEqualTo(21_000_000);
+    }
+
     @Test
     void onChainCosts() {
         assertThat(CHANNEL_DETAILS_DTO.onChainCosts()).isEqualTo(OnChainCostsDto.createFromModel(ON_CHAIN_COSTS));
diff --git a/ui/src/test/java/de/cotto/lndmanagej/ui/dto/OpenChannelDtoTest.java b/ui/src/test/java/de/cotto/lndmanagej/ui/dto/OpenChannelDtoTest.java
index 65403711..99fa817e 100644
--- a/ui/src/test/java/de/cotto/lndmanagej/ui/dto/OpenChannelDtoTest.java
+++ b/ui/src/test/java/de/cotto/lndmanagej/ui/dto/OpenChannelDtoTest.java
@@ -6,6 +6,7 @@ import de.cotto.lndmanagej.model.BalanceInformation;
 import de.cotto.lndmanagej.model.Coins;
 import org.junit.jupiter.api.Test;
 
+import static de.cotto.lndmanagej.controller.dto.OpenChannelDtoFixture.CAPACITY_SAT;
 import static de.cotto.lndmanagej.controller.dto.OpenChannelDtoFixture.OPEN_CHANNEL_DTO;
 import static de.cotto.lndmanagej.model.BalanceInformationFixtures.BALANCE_INFORMATION;
 import static de.cotto.lndmanagej.model.ChannelIdFixtures.CHANNEL_ID;
@@ -34,6 +35,11 @@ class OpenChannelDtoTest {
         assertThat(OPEN_CHANNEL_DTO.policies()).isEqualTo(PoliciesDto.createFromModel(POLICIES_FOR_LOCAL_CHANNEL));
     }
 
+    @Test
+    void capacitySat() {
+        assertThat(OPEN_CHANNEL_DTO.capacitySat()).isEqualTo(21_000_000);
+    }
+
     @Test
     void balanceInformation() {
         assertThat(OPEN_CHANNEL_DTO.balanceInformation())
@@ -62,7 +68,8 @@ class OpenChannelDtoTest {
                 "Albert",
                 PUBKEY,
                 PoliciesDto.createFromModel(POLICIES_FOR_LOCAL_CHANNEL),
-                BalanceInformationDto.createFromModel(balanceInformation)
+                BalanceInformationDto.createFromModel(balanceInformation),
+                CAPACITY_SAT
         );
     }
 }
diff --git a/ui/src/testFixtures/java/de/cotto/lndmanagej/controller/dto/ChannelDetailsDtoFixture.java b/ui/src/testFixtures/java/de/cotto/lndmanagej/controller/dto/ChannelDetailsDtoFixture.java
index 7c0e4ebc..1e8f7470 100644
--- a/ui/src/testFixtures/java/de/cotto/lndmanagej/controller/dto/ChannelDetailsDtoFixture.java
+++ b/ui/src/testFixtures/java/de/cotto/lndmanagej/controller/dto/ChannelDetailsDtoFixture.java
@@ -2,6 +2,7 @@ package de.cotto.lndmanagej.controller.dto;
 
 import de.cotto.lndmanagej.ui.dto.ChannelDetailsDto;
 
+import static de.cotto.lndmanagej.controller.dto.OpenChannelDtoFixture.CAPACITY_SAT;
 import static de.cotto.lndmanagej.model.BalanceInformationFixtures.BALANCE_INFORMATION;
 import static de.cotto.lndmanagej.model.ChannelIdFixtures.CHANNEL_ID;
 import static de.cotto.lndmanagej.model.FeeReportFixtures.FEE_REPORT;
@@ -21,6 +22,7 @@ public class ChannelDetailsDtoFixture {
             "Albert",
             LOCAL,
             BalanceInformationDto.createFromModel(BALANCE_INFORMATION),
+            CAPACITY_SAT,
             OnChainCostsDto.createFromModel(ON_CHAIN_COSTS),
             PoliciesDto.createFromModel(POLICIES_FOR_LOCAL_CHANNEL),
             FeeReportDto.createFromModel(FEE_REPORT),
diff --git a/ui/src/testFixtures/java/de/cotto/lndmanagej/controller/dto/OpenChannelDtoFixture.java b/ui/src/testFixtures/java/de/cotto/lndmanagej/controller/dto/OpenChannelDtoFixture.java
index 960ef997..c5aaa9a3 100644
--- a/ui/src/testFixtures/java/de/cotto/lndmanagej/controller/dto/OpenChannelDtoFixture.java
+++ b/ui/src/testFixtures/java/de/cotto/lndmanagej/controller/dto/OpenChannelDtoFixture.java
@@ -12,18 +12,22 @@ import static de.cotto.lndmanagej.model.PubkeyFixtures.PUBKEY_2;
 
 public class OpenChannelDtoFixture {
 
+    public static final long CAPACITY_SAT = 21_000_000;
+
     public static final OpenChannelDto OPEN_CHANNEL_DTO = new OpenChannelDto(
             CHANNEL_ID,
             "Albert",
             PUBKEY,
             PoliciesDto.createFromModel(POLICIES_FOR_LOCAL_CHANNEL),
-            BalanceInformationDto.createFromModel(BALANCE_INFORMATION));
+            BalanceInformationDto.createFromModel(BALANCE_INFORMATION),
+            CAPACITY_SAT);
 
     public static final OpenChannelDto OPEN_CHANNEL_DTO2 = new OpenChannelDto(
             CHANNEL_ID_2,
             "Albert II",
             PUBKEY_2,
             PoliciesDto.createFromModel(POLICIES_FOR_LOCAL_CHANNEL),
-            BalanceInformationDto.createFromModel(BALANCE_INFORMATION_2));
+            BalanceInformationDto.createFromModel(BALANCE_INFORMATION_2),
+            CAPACITY_SAT);
 
 }