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Request your FREE Public Sector Decarbonisation Scheme calculation

The Public Sector Decarbonisation Scheme provides 100% capital grants for energy efficiency and heat decarbonisation projects for non-domestic public sector buildings.

Unlock the potential of your low carbon heat project with Hysopt!

One of the greatest 2050 Net Zero targets is decarbonising the way buildings are heated. Most public buildings still rely on fossil fuel-based heating. Since these approaches are end of live, it is an ideal opportunity to transition to a low carbon approach.

Low carbon heating and cooling measures have the potential to deliver immediate carbon savings, but they are not a like-for-like replacement for gas boilers. Experience from previous funding rounds has already shown the opportunity for good practice system design is being missed. 

Hysopt's CIBSE Award Winning HVAC Ditigal Twin software optimises new system designs to:

Make the right choices in the engineering phase

Deliver the design intent into the as build installation

Deliver on carbon saving objectives

“First time right” installation performances

Why use Hysopt in your low carbon heat project?

  • Lowest possible running costs;
  • Optimised capital investment costs;
  • Highest possible carbon savings;
  • Science based performance metrics and £/tCO2 savings at the bid/design stage;
  • Significantly enhanced chance of bid success;

How Hysopt can help with your low carbon heat project:

1. Free Low carbon heat assessment

Take advantage of Hysopt’s unparalleled expertise in optimising heating systems by using our FREE low carbon heat optimisation calculation to support your application bid.

Our calculation will help you understand the potential carbon, energy cost and capital cost impacts a properly optimised low carbon heat solution can make; and provide you with all the key metrics required for your full PSDS application.

2. Hysopt conceptual study

For a more indepth study, our conceptual optimisation study will create a full digital model of your current installation, complete with dynamic simulations of how low carbon heat options will perform.

Our power Pareto Analysis Tool will provide an objective comparison of different design options against a range of KPI’s and performance metrics, providing detailed evidence to support your PSDS bid or underpin your heat decarbonisation plan.

During 5 sessions you will learn to optimise your hydraulics.

Each session takes 2 hours during which 1 or more Hysopt specialists will talk about the interesting world of hydronics. You will receive a temporary license of the Hysopt software, which will be used as a didactic tool throughout the e-Academy.


Session 1 | 10/02 | 14:00-16:00 CET

Optimising heat distribution by correct use of distribution circuits and hydraulic balancing

OPTIONAL: Exercise session 15/02 14:00 – 16:00 CET


Session 2 | 24/02 | 14:00-16:00 CET

Optimising existing heating installations

OPTIONAL: Exercise session 01/03 14:00 – 16:00 CET


Session 3 | 03/03 | 14:00-16:00 CET

Designing hybrid plantrooms with CHP and boiler: unlocking the full potential of a CHP for your heating installation

OPTIONAL: Exercise session 08/03 14:00 – 16:00 CET


Session 4 | 10/03 | 14:00-16:00 CET

Designing hybrid plantrooms with heat pumps and boilers, optimising low-grade and high-grade heat

OPTIONAL: Exercise session 15/03 14:00 – 16:00 CET


Session 5 | 17/03 | 14:00-16:00 CET

Making the right choices when designing heat networks and communal heating systems with HIU’s

OPTIONAL: Exercise session 22/03 14:00 – 16:00 CET

Would you like to know more about each session?

Our alumni have their say

Elliot Miles Testimony about Hysopt e-Academy

“I had the pleasure of attending a 5 part course which has enabled me personally, and SWEP as a company, to gain a better understanding of the hydronic challenges faced by designers of heating and cooling networks.” 

- Elliot Miles | Lead Business Engineer at SWEP

Peter Grondelaers testimonial about Hysopt e-Academy

“During this course I learned how important Hydraulic Optimisation of Heating and Cooling Installations is in order to cut energy costs, reduce carbon emissions and optimise the comfort of buildings.”

- Peter Grondelaers | Sustainability Engineer

Carlos Rodriguez testimonial about Hysopt e-Academy

“I was impressed with the course content and the Hysopt Software. Looking forward to use the software for a project soon.”

- Carlos Rodriguez | Principal Engineer at Ramboll

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Newcastle City Council

Scheme:  Academy secondary school – Gas boiler to heat pump upgrade 

Prior to Hysopt modelling:  proposal to install 1MW high temperature heat pumps, capex circa £1.5m 

What did Hysopt modelling prove?

  • Installation of high temperature heat pumps at high flow temps would double energy costs vs existing gas system, due to very poor seasonal efficiency (SCOP <2); 
  • Optimisation of the existing heat distribution system and taking advantage of oversizing in current installation allowed operation at lower flow temperatures, allowing “standard” temperature heat pumps to be installed; 
  • Optimisation of the control strategy could reduce peak demands further still; 
  • Results in lower upfront capex costs (£800k saving) and running costs on a par with existing gas boilers, due to much higher heat pump seasonal efficiency 
  • Cost per tonne CO2 reduced from >£750/tCO2 to <£250/tCO2 


5 ingredients for successful deployment of heat pumps into non-domestic buildings

Want to learn more about how you can sucessfully deploy heat pumps in non-domestic buildings in relation to the Public Sector Decarbonisation Scheme?