---
title: "Accend projects: Carbon Hill"
description: Carbon Hill utilizes new and existing technologies to produce biochar with minimal emissions. Learn more & request to purchase CORCs from the project »
---

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## Carbon Hill

- **Standard:**Puro.earth
- **Methodology:** Biochar
- **Credit Type:** CORC100+
- **Facility ID:** 712033
- **Location:** UK
- **Year of first issuance:** 2022
- **Status:** Audited
- **Audited by:** bio.inspecta
- **Spot Inventory:** Yes
- **Forward Inventory:** Yes

 

### Description

Family-run and based in mid-Wales, Carbon Hill produces biochar from locally sourced, underutilized biomass such as hedgerow trimmings and green waste, using proprietary low-emission pyrolysis systems developed in-house and deployed by other producers in the UK and Sweden. The company is scaling production and actively supporting biochar adoption in the UK through applications in composting, agriculture, and academic soil trials.

 

### Feedstock

Carbon Hill uses two underutilised waste biomass streams:

- **Hedgerow cuttings** (whole tree) from surrounding farmland
- **Green Waste Over Size (GWOS)** from local parks and gardens  
  Only the former was used during the reporting period. Feedstock is sourced within 18 km on average, chipped offsite, and dried on site. These materials are typically burned or left to decompose, leading to CO₂ emissions.

### Application

**On-Farm Use**  
Biochar is applied to agricultural land, including Carbon Hill’s own farm and nearby partner sites, improving soil quality and supporting regenerative practices.

**Compost Blending**  
Part of the biochar output is incorporated into compost mixes, enhancing nutrient retention and microbial activity in organic soil products.

**Research Trials**  
Biochar is also used in collaboration with academic partners for research trials, contributing to data generation and validating agronomic benefits.

 

### Co-benefits

- **Economic development:** Carbon Hill supports local economic development by creating jobs and generating revenue in a region with persistently low GDP per capita.
- **Circular Economy:** The project contributes to local circular economy objectives by diverting underused biomass like hedgerow trimmings and municipal green waste from decomposition or burning.
- **Innovation:** Carbon Hill has designed and deployed a proprietary pyrolysis system, supporting decentralized carbon removal and positionning the UK as a player in biochar innovation.
- **Soil health:** The biochar improves the soil structure, water retention, and nutrient availability. It reduces the need for chemical fertilizers. Microbial activity also increases, boosting soil vitality.
- **R&D:** Carbon Hill is active in field trials and collaborations with academic institutions. Their work supports evidence-based scaling of biochar and the credibility of the UK carbon removal market.

### Additionality

- **Environmental additionality:** The baseline for the feedstock is decomposition, combustion, or composting. Before biochar production, municipal green waste and hedgerow cuttings were typically left to rot, burned, or composted—processes that lead to the release of CO₂.
- **Financial additionality:** Carbon credits are crucial to expanding Carbon Hill's business. The revenues generated through the sale of carbon credits will be used to fund the development and production cost of pyrolysis units, to create demand for and spread knowledge of biochar and to pursue a price strategy for the biochar that permits profitable growth.
- **Regulatory additionality:** The project is not required by existing laws, regulations, or other binding obligations, demonstrating its additionality in contributing to sustainability and climate goals.

 

Request full project description Request to purchase CORCs

![Ref 1. June 21 Spreading on Field](https://www.accend.earth/hubfs/Ref%201.%20June%2021%20Spreading%20on%20Field.jpg)

![feedstock pile](https://www.accend.earth/hubfs/feedstock%20pile.jpg)

![Ref 5. 09.03.22 5m dia 3m high to be blended 33 to 66 percent compost](https://www.accend.earth/hubfs/Ref%205.%2009.03.22%205m%20dia%203m%20high%20to%20be%20blended%2033%20to%2066%20percent%20compost.jpg)

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