diff --git a/cmd/zetaclientd/utils.go b/cmd/zetaclientd/utils.go
index 70752db4a5..06dd645edd 100644
--- a/cmd/zetaclientd/utils.go
+++ b/cmd/zetaclientd/utils.go
@@ -6,6 +6,8 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	ethcommon "github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/ethclient"
+	"github.com/zeta-chain/zetacore/pkg/chains"
+	observertypes "github.com/zeta-chain/zetacore/x/observer/types"
 
 	"github.com/zeta-chain/zetacore/zetaclient/authz"
 	"github.com/zeta-chain/zetacore/zetaclient/chains/base"
@@ -15,7 +17,6 @@ import (
 	evmobserver "github.com/zeta-chain/zetacore/zetaclient/chains/evm/observer"
 	evmsigner "github.com/zeta-chain/zetacore/zetaclient/chains/evm/signer"
 	"github.com/zeta-chain/zetacore/zetaclient/chains/interfaces"
-	"github.com/zeta-chain/zetacore/zetaclient/chains/solana"
 	solanaobserver "github.com/zeta-chain/zetacore/zetaclient/chains/solana/observer"
 	"github.com/zeta-chain/zetacore/zetaclient/config"
 	"github.com/zeta-chain/zetacore/zetaclient/context"
@@ -193,13 +194,17 @@ func CreateChainObserverMap(
 	}
 
 	// TODO: config this
-	programId := "94U5AHQMKkV5txNJ17QPXWoh474PheGou6cNP2FEuL1d"
-	co, err := solanaobserver.NewObserver(appContext, zetacoreClient, tss, programId, dbpath, ts)
+	solChainParams := observertypes.ChainParams{
+		GatewayAddress: "94U5AHQMKkV5txNJ17QPXWoh474PheGou6cNP2FEuL1d",
+		IsSupported:    true,
+		ChainId:        chains.SolanaLocalnet.ChainId,
+	}
+	co, err := solanaobserver.NewObserver(appContext, zetacoreClient, solChainParams, tss, dbpath, ts)
 	if err != nil {
 		logger.Std.Error().Err(err).Msg("NewObserver error for solana chain")
 	} else {
 		// TODO: config this
-		observerMap[solana.LocalnetChainID] = co
+		observerMap[solChainParams.ChainId] = co
 	}
 
 	return observerMap, nil
diff --git a/e2e/runner/runner.go b/e2e/runner/runner.go
index b8c7d2910c..99c67c9b1a 100644
--- a/e2e/runner/runner.go
+++ b/e2e/runner/runner.go
@@ -168,6 +168,7 @@ func NewE2ERunner(
 		EVMAuth:      evmAuth,
 		ZEVMAuth:     zevmAuth,
 		BtcRPCClient: btcRPCClient,
+		SolanaClient: solanaClient,
 
 		Logger: logger,
 	}
diff --git a/e2e/txserver/zeta_tx_server.go b/e2e/txserver/zeta_tx_server.go
index 9949bfb511..6d4e1d876e 100644
--- a/e2e/txserver/zeta_tx_server.go
+++ b/e2e/txserver/zeta_tx_server.go
@@ -36,8 +36,6 @@ import (
 	"github.com/evmos/ethermint/crypto/hd"
 	etherminttypes "github.com/evmos/ethermint/types"
 	evmtypes "github.com/evmos/ethermint/x/evm/types"
-	solanaclient "github.com/zeta-chain/zetacore/zetaclient/chains/solana"
-
 	"github.com/zeta-chain/zetacore/app"
 	"github.com/zeta-chain/zetacore/cmd/zetacored/config"
 	"github.com/zeta-chain/zetacore/pkg/chains"
@@ -373,7 +371,7 @@ func (zts ZetaTxServer) DeploySystemContractsAndZRC20(
 	_, err = zts.BroadcastTx(account, fungibletypes.NewMsgDeployFungibleCoinZRC20(
 		addr.String(),
 		"",
-		solanaclient.LocalnetChainID,
+		chains.SolanaLocalnet.ChainId,
 		9,
 		"Solana",
 		"SOL",
diff --git a/zetaclient/chains/solana/constants.go b/zetaclient/chains/solana/constants.go
index ddd188ff90..ef92f06771 100644
--- a/zetaclient/chains/solana/constants.go
+++ b/zetaclient/chains/solana/constants.go
@@ -1,7 +1 @@
 package solana
-
-const (
-	LocalnetChainID = 28899
-	TestnetChainID  = 18899
-	MainnetChainID  = 8899
-)
diff --git a/zetaclient/chains/solana/observer/observer.go b/zetaclient/chains/solana/observer/observer.go
index 7bd68cf13c..e8db121165 100644
--- a/zetaclient/chains/solana/observer/observer.go
+++ b/zetaclient/chains/solana/observer/observer.go
@@ -19,7 +19,6 @@ import (
 	"github.com/zeta-chain/zetacore/x/crosschain/types"
 	observertypes "github.com/zeta-chain/zetacore/x/observer/types"
 	"github.com/zeta-chain/zetacore/zetaclient/chains/interfaces"
-	solanaclient "github.com/zeta-chain/zetacore/zetaclient/chains/solana"
 	clientcontext "github.com/zeta-chain/zetacore/zetaclient/context"
 	"github.com/zeta-chain/zetacore/zetaclient/metrics"
 	clienttypes "github.com/zeta-chain/zetacore/zetaclient/types"
@@ -51,8 +50,8 @@ var _ interfaces.ChainObserver = &Observer{}
 func NewObserver(
 	appContext *clientcontext.AppContext,
 	zetacoreClient interfaces.ZetacoreClient,
+	chainParams observertypes.ChainParams,
 	tss interfaces.TSSSigner,
-	programIdStr string,
 	dbpath string,
 	ts *metrics.TelemetryServer,
 ) (*Observer, error) {
@@ -64,15 +63,12 @@ func NewObserver(
 	ob.logger = logger
 
 	//ob.coreContext = appContext.ZetacoreContext()
-	chainParams := observertypes.ChainParams{
-		IsSupported: true,
-	}
 	ob.chainParams = chainParams
 	ob.stop = make(chan struct{})
 	ob.Mu = &sync.Mutex{}
 	ob.zetacoreClient = zetacoreClient
 	ob.Tss = tss
-	ob.programId = solana.MustPublicKeyFromBase58(programIdStr)
+	ob.programId = solana.MustPublicKeyFromBase58(chainParams.GatewayAddress)
 
 	endpoint := "http://solana:8899"
 	logger.Info().Msgf("Chain solana endpoint %s", endpoint)
@@ -238,7 +234,7 @@ func (o *Observer) ObserveInbound() error {
 		}
 		msg := zetacore.GetInboundVoteMessage(
 			accounts[0].String(), // check this--is this the signer?
-			solanaclient.LocalnetChainID,
+			o.chainParams.ChainId,
 			accounts[0].String(), // check this--is this the signer?
 			accounts[0].String(), // check this--is this the signer?
 			o.zetacoreClient.Chain().ChainId,