diff --git a/Cargo.toml b/Cargo.toml
index f9a7968b9..d390177be 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -176,3 +176,4 @@ runtime-benchmarks = [
     "node-subtensor-runtime/runtime-benchmarks",
 ]
 metadata-hash = ["node-subtensor-runtime/metadata-hash"]
+testnet = []
diff --git a/justfile b/justfile
index f99f3913a..d20ae9afb 100644
--- a/justfile
+++ b/justfile
@@ -52,3 +52,7 @@ lint:
 production:
   @echo "Running cargo build with metadata-hash generation..."
   cargo +{{RUSTV}} build --profile production --features="runtime-benchmarks metadata-hash"
+
+testnet:
+  @echo "Running cargo build with testnet config..."
+  cargo +{{RUSTV}} build --profile production --features="runtime-benchmarks metadata-hash testnet"
diff --git a/node/Cargo.toml b/node/Cargo.toml
index 3c5c91b92..2e85897a4 100644
--- a/node/Cargo.toml
+++ b/node/Cargo.toml
@@ -107,3 +107,4 @@ try-runtime = [
 ]
 
 metadata-hash = ["node-subtensor-runtime/metadata-hash"]
+testnet = []
diff --git a/pallets/subtensor/Cargo.toml b/pallets/subtensor/Cargo.toml
index 3023d1e0d..ab50e89f2 100644
--- a/pallets/subtensor/Cargo.toml
+++ b/pallets/subtensor/Cargo.toml
@@ -45,7 +45,9 @@ hex = { workspace = true }
 pallet-collective = { version = "4.0.0-dev", default-features = false, path = "../collective" }
 pallet-membership = { workspace = true }
 hex-literal = { workspace = true }
-num-traits = { version = "0.2.19", default-features = false, features = ["libm"] }
+num-traits = { version = "0.2.19", default-features = false, features = [
+	"libm",
+] }
 
 [dev-dependencies]
 pallet-balances = { workspace = true, features = ["std"] }
@@ -89,7 +91,7 @@ std = [
 	"serde_with/std",
 	"substrate-fixed/std",
 	"num-traits/std",
-	"serde_json/std"
+	"serde_json/std",
 ]
 runtime-benchmarks = [
 	"frame-benchmarking/runtime-benchmarks",
@@ -113,6 +115,7 @@ try-runtime = [
 	"pallet-transaction-payment/try-runtime",
 	"pallet-utility/try-runtime",
 	"sp-runtime/try-runtime",
-	"pallet-collective/try-runtime"
+	"pallet-collective/try-runtime",
 ]
 pow-faucet = []
+testnet = []
diff --git a/pallets/subtensor/src/lib.rs b/pallets/subtensor/src/lib.rs
index 2985736c8..855704c0e 100644
--- a/pallets/subtensor/src/lib.rs
+++ b/pallets/subtensor/src/lib.rs
@@ -187,10 +187,18 @@ pub mod pallet {
     /// ============================
 
     #[pallet::type_value]
-    /// Total Rao in circulation.
+    /// Total TAO Cap.
     pub fn TotalSupply<T: Config>() -> u64 {
-        21_000_000_000_000_000
+        #[cfg(feature = "testnet")]
+        {
+            15_000_000_000_000_000_000
+        }
+        #[cfg(not(feature = "testnet"))]
+        {
+            21_000_000_000_000_000
+        }
     }
+
     #[pallet::type_value]
     /// Default Delegate Take.
     pub fn DefaultDelegateTake<T: Config>() -> u16 {
@@ -665,6 +673,8 @@ pub mod pallet {
     /// separate accounting.
     #[pallet::storage] // --- ITEM ( total_issuance )
     pub type TotalIssuance<T> = StorageValue<_, u64, ValueQuery, DefaultTotalIssuance<T>>;
+    #[pallet::storage] // --- ITEM ( total_supply )
+    pub type TotalTaoSupplyCap<T> = StorageValue<_, u64, ValueQuery, TotalSupply<T>>;
     #[pallet::storage] // --- ITEM ( total_stake )
     pub type TotalStake<T> = StorageValue<_, u64, ValueQuery>;
     #[pallet::storage] // --- ITEM ( default_delegate_take )
diff --git a/runtime/Cargo.toml b/runtime/Cargo.toml
index 8a2886eb1..6c5bf28c1 100644
--- a/runtime/Cargo.toml
+++ b/runtime/Cargo.toml
@@ -207,3 +207,4 @@ try-runtime = [
 	"pallet-registry/try-runtime",
 ]
 metadata-hash = ["substrate-wasm-builder/metadata-hash"]
+testnet = []
diff --git a/runtime/src/lib.rs b/runtime/src/lib.rs
index ca8f83911..5ffb0863a 100644
--- a/runtime/src/lib.rs
+++ b/runtime/src/lib.rs
@@ -142,7 +142,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
     //   `spec_version`, and `authoring_version` are the same between Wasm and native.
     // This value is set to 100 to notify Polkadot-JS App (https://polkadot.js.org/apps) to use
     //   the compatible custom types.
-    spec_version: 195,
+    spec_version: 196,
     impl_version: 1,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 1,
diff --git a/scripts/localnet.sh b/scripts/localnet.sh
index 850a314d8..e0e366a6a 100755
--- a/scripts/localnet.sh
+++ b/scripts/localnet.sh
@@ -15,41 +15,49 @@ SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd)"
 # The base directory of the subtensor project
 BASE_DIR="$SCRIPT_DIR/.."
 
-# get parameters
-# Get the value of fast_blocks from the first argument
+# Get parameters
 fast_blocks=${1:-"True"}
+testnet=${2:-"Fale"}
+
+# Initialize FEATURES
+FEATURES="pow-faucet runtime-benchmarks"
 
 # Check the value of fast_blocks
-if [ "$fast_blocks" == "False" ]; then
-  # Block of code to execute if fast_blocks is False
-  echo "fast_blocks is Off"
-  : "${CHAIN:=local}"
-  : "${BUILD_BINARY:=1}"
-  : "${FEATURES:="pow-faucet runtime-benchmarks"}"
+if [ "$fast_blocks" == "True" ]; then
+    echo "fast_blocks is On"
+    FEATURES+=" fast-blocks"
+else
+    echo "fast_blocks is Off"
+fi
+
+# Check the value of testnet
+if [ "$testnet" == "True" ]; then
+    echo "testnet is On"
+    FEATURES+=" testnet"
 else
-  # Block of code to execute if fast_blocks is not False
-  echo "fast_blocks is On"
-  : "${CHAIN:=local}"
-  : "${BUILD_BINARY:=1}"
-  : "${FEATURES:="pow-faucet runtime-benchmarks fast-blocks"}"
+    echo "testnet is Off"
 fi
 
+: "${CHAIN:=local}"
+: "${BUILD_BINARY:=1}"
+
 SPEC_PATH="${SCRIPT_DIR}/specs/"
 FULL_PATH="$SPEC_PATH$CHAIN.json"
 
+
 # Kill any existing nodes which may have not exited correctly after a previous
 # run.
 pkill -9 'node-subtensor'
 
 if [ ! -d "$SPEC_PATH" ]; then
-  echo "*** Creating directory ${SPEC_PATH}..."
-  mkdir $SPEC_PATH
+    echo "*** Creating directory ${SPEC_PATH}..."
+    mkdir $SPEC_PATH
 fi
 
 if [[ $BUILD_BINARY == "1" ]]; then
-  echo "*** Building substrate binary..."
-  cargo build --workspace --profile=release --features "$FEATURES" --manifest-path "$BASE_DIR/Cargo.toml"
-  echo "*** Binary compiled"
+    echo "*** Building substrate binary..."
+    cargo build --workspace --profile=release --features "$FEATURES" --manifest-path "$BASE_DIR/Cargo.toml"
+    echo "*** Binary compiled"
 fi
 
 echo "*** Building chainspec..."
@@ -57,44 +65,44 @@ echo "*** Building chainspec..."
 echo "*** Chainspec built and output to file"
 
 if [ $NO_PURGE -eq 1 ]; then
-  echo "*** Purging previous state skipped..."
+    echo "*** Purging previous state skipped..."
 else
-  echo "*** Purging previous state..."
-  "$BASE_DIR/target/release/node-subtensor" purge-chain -y --base-path /tmp/bob --chain="$FULL_PATH" >/dev/null 2>&1
-  "$BASE_DIR/target/release/node-subtensor" purge-chain -y --base-path /tmp/alice --chain="$FULL_PATH" >/dev/null 2>&1
-  echo "*** Previous chainstate purged"
+    echo "*** Purging previous state..."
+    "$BASE_DIR/target/release/node-subtensor" purge-chain -y --base-path /tmp/bob --chain="$FULL_PATH" >/dev/null 2>&1
+    "$BASE_DIR/target/release/node-subtensor" purge-chain -y --base-path /tmp/alice --chain="$FULL_PATH" >/dev/null 2>&1
+    echo "*** Previous chainstate purged"
 fi
 
 echo "*** Starting localnet nodes..."
 alice_start=(
-  "$BASE_DIR/target/release/node-subtensor"
-  --base-path /tmp/alice
-  --chain="$FULL_PATH"
-  --alice
-  --port 30334
-  --rpc-port 9946
-  --validator
-  --rpc-cors=all
-  --allow-private-ipv4
-  --discover-local
+    "$BASE_DIR/target/release/node-subtensor"
+    --base-path /tmp/alice
+    --chain="$FULL_PATH"
+    --alice
+    --port 30334
+    --rpc-port 9946
+    --validator
+    --rpc-cors=all
+    --allow-private-ipv4
+    --discover-local
 )
 
 bob_start=(
-  "$BASE_DIR"/target/release/node-subtensor
-  --base-path /tmp/bob
-  --chain="$FULL_PATH"
-  --bob
-  --port 30335
-  --rpc-port 9945
-  --validator
-  --allow-private-ipv4
-  --discover-local
+    "$BASE_DIR"/target/release/node-subtensor
+    --base-path /tmp/bob
+    --chain="$FULL_PATH"
+    --bob
+    --port 30335
+    --rpc-port 9945
+    --validator
+    --allow-private-ipv4
+    --discover-local
 )
 
 trap 'pkill -P $$' EXIT SIGINT SIGTERM
 
 (
-  ("${alice_start[@]}" 2>&1) &
-  ("${bob_start[@]}" 2>&1)
-  wait
+    ("${alice_start[@]}" 2>&1) &
+    ("${bob_start[@]}" 2>&1)
+    wait
 )