diff --git a/pallas-configs/src/lib.rs b/pallas-configs/src/lib.rs
index a000d3c..154a7b2 100644
--- a/pallas-configs/src/lib.rs
+++ b/pallas-configs/src/lib.rs
@@ -1,3 +1,4 @@
 //! Genesis data structs and utilities
 
 pub mod byron;
+pub mod shelley;
diff --git a/pallas-configs/src/shelley.rs b/pallas-configs/src/shelley.rs
new file mode 100644
index 0000000..a29a50c
--- /dev/null
+++ b/pallas-configs/src/shelley.rs
@@ -0,0 +1,103 @@
+use serde::Deserialize;
+use std::collections::HashMap;
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct GenDelegs {
+    pub delegate: Option<String>,
+    pub vrf: Option<String>,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct ProtocolVersion {
+    pub minor: Option<u32>,
+    pub major: Option<u32>,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct ExtraEntropy {
+    pub tag: Option<String>,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct ProtocolParams {
+    pub protocol_version: Option<ProtocolVersion>,
+    pub decentralisation_param: Option<u32>,
+    pub e_max: Option<u32>,
+    pub extra_entropy: Option<ExtraEntropy>,
+    pub max_tx_size: Option<u32>,
+    pub max_block_body_size: Option<u32>,
+    pub max_block_header_size: Option<u32>,
+    pub min_fee_a: Option<u32>,
+    pub min_fee_b: Option<u32>,
+    pub min_u_tx_o_value: Option<u32>,
+    pub pool_deposit: Option<u64>,
+    pub min_pool_cost: Option<u64>,
+    pub key_deposit: Option<u32>,
+    pub n_opt: Option<u32>,
+    pub rho: Option<f32>,
+    pub tau: Option<f32>,
+    pub a0: Option<f32>,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Staking {
+    pub pools: Option<HashMap<String, String>>,
+    pub stake: Option<HashMap<String, String>>,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct GenesisFile {
+    pub active_slots_coeff: Option<f32>,
+    pub epoch_length: Option<u32>,
+    pub gen_delegs: Option<HashMap<String, GenDelegs>>,
+    pub initial_funds: Option<HashMap<String, String>>,
+    pub max_kes_evolutions: Option<u32>,
+    pub max_lovelace_supply: Option<u64>,
+    pub network_id: Option<String>,
+    pub network_magic: Option<u32>,
+    pub protocol_params: Option<ProtocolParams>,
+    pub security_param: Option<u32>,
+    pub slot_length: Option<u32>,
+    pub slots_per_kes_period: Option<u32>,
+    pub staking: Option<Staking>,
+    pub system_start: Option<String>,
+    pub update_quorum: Option<u32>,
+}
+
+pub fn from_file(path: &std::path::Path) -> Result<GenesisFile, std::io::Error> {
+    let file = std::fs::File::open(path)?;
+    let reader = std::io::BufReader::new(file);
+    let parsed: GenesisFile = serde_json::from_reader(reader)?;
+
+    Ok(parsed)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn load_test_data_config(network: &str) -> GenesisFile {
+        let path = std::path::PathBuf::from(std::env::var("CARGO_MANIFEST_DIR").unwrap())
+            .join("..")
+            .join("test_data")
+            .join(format!("{network}-shelley-genesis.json"));
+
+        from_file(&path).unwrap()
+    }
+
+    #[test]
+    fn test_preview_json_loads() {
+        load_test_data_config("preview");
+    }
+
+    #[test]
+    fn test_mainnet_json_loads() {
+        load_test_data_config("mainnet");
+    }
+}
diff --git a/test_data/mainnet-shelley-genesis.json b/test_data/mainnet-shelley-genesis.json
new file mode 100644
index 0000000..e8cc20d
--- /dev/null
+++ b/test_data/mainnet-shelley-genesis.json
@@ -0,0 +1,68 @@
+{
+  "activeSlotsCoeff": 0.05,
+  "protocolParams": {
+    "protocolVersion": {
+      "minor": 0,
+      "major": 2
+    },
+    "decentralisationParam": 1,
+    "eMax": 18,
+    "extraEntropy": {
+      "tag": "NeutralNonce"
+    },
+    "maxTxSize": 16384,
+    "maxBlockBodySize": 65536,
+    "maxBlockHeaderSize": 1100,
+    "minFeeA": 44,
+    "minFeeB": 155381,
+    "minUTxOValue": 1000000,
+    "poolDeposit": 500000000,
+    "minPoolCost": 340000000,
+    "keyDeposit": 2000000,
+    "nOpt": 150,
+    "rho": 0.003,
+    "tau": 0.20,
+    "a0": 0.3
+  },
+  "genDelegs": {
+    "ad5463153dc3d24b9ff133e46136028bdc1edbb897f5a7cf1b37950c": {
+      "delegate": "d9e5c76ad5ee778960804094a389f0b546b5c2b140a62f8ec43ea54d",
+      "vrf": "64fa87e8b29a5b7bfbd6795677e3e878c505bc4a3649485d366b50abadec92d7"
+    },
+    "b9547b8a57656539a8d9bc42c008e38d9c8bd9c8adbb1e73ad529497": {
+      "delegate": "855d6fc1e54274e331e34478eeac8d060b0b90c1f9e8a2b01167c048",
+      "vrf": "66d5167a1f426bd1adcc8bbf4b88c280d38c148d135cb41e3f5a39f948ad7fcc"
+    },
+    "60baee25cbc90047e83fd01e1e57dc0b06d3d0cb150d0ab40bbfead1": {
+      "delegate": "7f72a1826ae3b279782ab2bc582d0d2958de65bd86b2c4f82d8ba956",
+      "vrf": "c0546d9aa5740afd569d3c2d9c412595cd60822bb6d9a4e8ce6c43d12bd0f674"
+    },
+    "f7b341c14cd58fca4195a9b278cce1ef402dc0e06deb77e543cd1757": {
+      "delegate": "69ae12f9e45c0c9122356c8e624b1fbbed6c22a2e3b4358cf0cb5011",
+      "vrf": "6394a632af51a32768a6f12dac3485d9c0712d0b54e3f389f355385762a478f2"
+    },
+    "162f94554ac8c225383a2248c245659eda870eaa82d0ef25fc7dcd82": {
+      "delegate": "4485708022839a7b9b8b639a939c85ec0ed6999b5b6dc651b03c43f6",
+      "vrf": "aba81e764b71006c515986bf7b37a72fbb5554f78e6775f08e384dbd572a4b32"
+    },
+    "2075a095b3c844a29c24317a94a643ab8e22d54a3a3a72a420260af6": {
+      "delegate": "6535db26347283990a252313a7903a45e3526ec25ddba381c071b25b",
+      "vrf": "fcaca997b8105bd860876348fc2c6e68b13607f9bbd23515cd2193b555d267af"
+    },
+    "268cfc0b89e910ead22e0ade91493d8212f53f3e2164b2e4bef0819b": {
+      "delegate": "1d4f2e1fda43070d71bb22a5522f86943c7c18aeb4fa47a362c27e23",
+      "vrf": "63ef48bc5355f3e7973100c371d6a095251c80ceb40559f4750aa7014a6fb6db"
+    }
+  },
+  "updateQuorum": 5,
+  "networkId": "Mainnet",
+  "initialFunds": {},
+  "maxLovelaceSupply": 45000000000000000,
+  "networkMagic": 764824073,
+  "epochLength": 432000,
+  "systemStart": "2017-09-23T21:44:51Z",
+  "slotsPerKESPeriod": 129600,
+  "slotLength": 1,
+  "maxKESEvolutions": 62,
+  "securityParam": 2160
+}
diff --git a/test_data/preview-shelley-genesis.json b/test_data/preview-shelley-genesis.json
new file mode 100644
index 0000000..20abba3
--- /dev/null
+++ b/test_data/preview-shelley-genesis.json
@@ -0,0 +1,68 @@
+{
+    "activeSlotsCoeff": 0.05,
+    "epochLength": 86400,
+    "genDelegs": {
+        "12b0f443d02861948a0fce9541916b014e8402984c7b83ad70a834ce": {
+            "delegate": "7c54a168c731f2f44ced620f3cca7c2bd90731cab223d5167aa994e6",
+            "vrf": "62d546a35e1be66a2b06e29558ef33f4222f1c466adbb59b52d800964d4e60ec"
+        },
+        "3df542796a64e399b60c74acfbdb5afa1e114532fa36b46d6368ef3a": {
+            "delegate": "c44bc2f3cc7e98c0f227aa399e4035c33c0d775a0985875fff488e20",
+            "vrf": "4f9d334decadff6eba258b2df8ae1f02580a2628bce47ae7d957e1acd3f42a3c"
+        },
+        "93fd5083ff20e7ab5570948831730073143bea5a5d5539852ed45889": {
+            "delegate": "82a02922f10105566b70366b07c758c8134fa91b3d8ae697dfa5e8e0",
+            "vrf": "8a57e94a9b4c65ec575f35d41edb1df399fa30fdf10775389f5d1ef670ca3f9f"
+        },
+        "a86cab3ea72eabb2e8aafbbf4abbd2ba5bdfd04eea26a39b126a78e4": {
+            "delegate": "10257f6d3bae913514bdc96c9170b3166bf6838cca95736b0e418426",
+            "vrf": "1b54aad6b013145a0fc74bb5c2aa368ebaf3999e88637d78e09706d0cc29874a"
+        },
+        "b799804a28885bd49c0e1b99d8b3b26de0fac17a5cf651ecf0c872f0": {
+            "delegate": "ebe606e22d932d51be2c1ce87e7d7e4c9a7d1f7df4a5535c29e23d22",
+            "vrf": "b3fc06a1f8ee69ff23185d9af453503be8b15b2652e1f9fb7c3ded6797a2d6f9"
+        },
+        "d125812d6ab973a2c152a0525b7fd32d36ff13555a427966a9cac9b1": {
+            "delegate": "e302198135fb5b00bfe0b9b5623426f7cf03179ab7ba75f945d5b79b",
+            "vrf": "b45ca2ed95f92248fa0322ce1fc9f815a5a5aa2f21f1adc2c42c4dccfc7ba631"
+        },
+        "ef27651990a26449a40767d5e06cdef1670a3f3ff4b951d385b51787": {
+            "delegate": "0e0b11e80d958732e587585d30978d683a061831d1b753878f549d05",
+            "vrf": "b860ec844f6cd476c4fabb4aa1ca72d5c74d82f3835aed3c9515a35b6e048719"
+        }
+    },
+    "initialFunds": {},
+    "maxKESEvolutions": 62,
+    "maxLovelaceSupply": 45000000000000000,
+    "networkId": "Testnet",
+    "networkMagic": 2,
+    "protocolParams": {
+      "protocolVersion": {
+        "minor": 0,
+        "major": 6
+      },
+      "decentralisationParam": 1,
+      "eMax": 18,
+      "extraEntropy": {
+        "tag": "NeutralNonce"
+      },
+      "maxTxSize": 16384,
+      "maxBlockBodySize": 65536,
+      "maxBlockHeaderSize": 1100,
+      "minFeeA": 44,
+      "minFeeB": 155381,
+      "minUTxOValue": 1000000,
+      "poolDeposit": 500000000,
+      "minPoolCost": 340000000,
+      "keyDeposit": 2000000,
+      "nOpt": 150,
+      "rho": 0.003,
+      "tau": 0.20,
+      "a0": 0.3
+    },
+    "securityParam": 432,
+    "slotLength": 1,
+    "slotsPerKESPeriod": 129600,
+    "systemStart": "2022-10-25T00:00:00Z",
+    "updateQuorum": 5
+}