diff --git a/ps_account/models/account_move.py b/ps_account/models/account_move.py
index 5b48441..53fdf01 100644
--- a/ps_account/models/account_move.py
+++ b/ps_account/models/account_move.py
@@ -1,7 +1,9 @@
 # Copyright 2014-2023 The Open Source Company (www.tosc.nl).
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+from collections import OrderedDict
+
 from odoo import api, fields, models
-from odoo.tools import is_html_empty
+from odoo.tools import frozendict, is_html_empty
 
 
 class AccountMove(models.Model):
@@ -69,6 +71,35 @@ def group_by_analytic_acc(self, data_type, uom_hrs=False):
                         result.setdefault(analytic_account, []).append(line)
         return result
 
+    def group_by_project_product_unit_price(self):
+        """
+        Return synthesized account.move.line records implementing grouping required for
+        ps invoices
+        """
+        grouped = OrderedDict()
+
+        def key_func(line):
+            return (
+                frozendict(line.analytic_distribution),
+                line.product_id,
+                line.price_unit,
+            )
+
+        for line in self.mapped("invoice_line_ids").sorted(key=key_func):
+            key = key_func(line)
+            if key not in grouped:
+                grouped[key] = line.new(line._cache)
+                grouped[key]["name"] = "%s%s" % (
+                    line.ps_invoice_id.project_id.name
+                    and (line.ps_invoice_id.project_id.name + " - ")
+                    or "",
+                    line.product_id.name,
+                )
+            else:
+                grouped[key].quantity += line.quantity
+
+        return grouped.values()
+
     def parse_invoice_description(self):
         res = not is_html_empty(self.invoice_description)
         return res
diff --git a/ps_account/report/report_invoice.xml b/ps_account/report/report_invoice.xml
index eefc112..b2bd8e3 100644
--- a/ps_account/report/report_invoice.xml
+++ b/ps_account/report/report_invoice.xml
@@ -819,6 +819,13 @@
                     />
                 </t>
             </xpath>
+            <xpath expr="//t[@t-set='lines']" position="after">
+                <t
+                    t-if="o.invoice_line_ids.mapped('ps_invoice_id')"
+                    t-set="lines"
+                    t-value="o.group_by_project_product_unit_price()"
+                />
+            </xpath>
         </template>
         <!--<template id="ps_account.report_invoice_ps_account">
             <t t-call="web.html_container">