Heat Decarbonisation Plans (HDPs)

Site-level heat demand analysis and system review

We begin each heat decarbonisation plan with a detailed analysis of heat demand across your site, combined with a review of existing heating systems and controls. This helps us understand current performance, identify inefficiencies, and uncover opportunities for improvement. By building a clear picture of how heat is generated, distributed, and used, we lay the foundation for practical, cost-effective decarbonisation strategies.
 

Key steps include:

 
• Mapping heat demand across buildings, processes, and operational zones
• Reviewing existing heating systems, including boilers, controls, and distribution networks
• Identifying performance gaps and areas of excessive energy use
• Highlighting opportunities for system upgrades, optimisation, and low-carbon alternatives

Assessment of low-carbon technologies

We evaluate a range of low-carbon heating solutions tailored to your site’s needs, constraints, and energy goals. Technologies such as heat pumps, district heating, and solar thermal are assessed for technical feasibility, carbon savings, and integration with existing systems.  helping you make confident, future-ready decisions.
 

Key considerations include:

 
• Suitability of heat pumps (air, ground, or water-source) based on site layout and demand
• Opportunities to connect to or develop district heating networks
• Potential for solar thermal systems and integration with hot water demand
• Hybrid options to support phased decarbonisation
• Estimated performance, carbon impact, and return on investment

Phased implementation strategy and carbon impact forecasting

We develop a practical, phased roadmap for heat decarbonisation, tailored to your site’s priorities and constraints. Each stage is supported by carbon impact forecasts, helping you track progress, demonstrate impact, and stay aligned with your sustainability targets.
 

Our strategy includes:

 
• Structuring decarbonisation into manageable phases for delivery and investment
• Aligning actions with operational needs, funding windows, and compliance timelines
• Forecasting carbon savings to support reporting and decision-making
• Identifying quick wins alongside longer-term infrastructure upgrades

Budget-level costings and funding alignment

Each plan includes indicative costings and identifies potential funding routes, ensuring financial viability and alignment with relevant grant or incentive schemes. We help you understand the scale of investment required and explore opportunities to reduce upfront costs through external support.
 

This includes:

 
• Providing budget-level estimates for recommended measures
• Highlighting relevant funding schemes, grants, and incentives
• Aligning investment plans with funding timelines and criteria
• Supporting business case development for internal approval or external bids

Support Up to RIBA Stage 4+

Arthian can support HDP development through all the RIBA stages from concept to handover. We support the design stage RIBA Stage 4, including:

 
• Technical design and specification
• Performance requirements and compliance
• Procurement and contractor engagement
• Tendering and project management
• Integration with wider retrofit and energy strategies

This ensures your HDP is not just a strategic document, but a foundation for real-world delivery.