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Case Study: King's Cross Estate

Innovative green gas agreement eliminates tonnes of CO2 for London-estate

20,000 tonnes of carbon emissions eliminated thanks to green gas deal at King's Cross

20K

tCO2 SAVED PER ANNUM

110K

MWh GREEN GAS SUPPLY

ABOUT KINGS CROSS


King’s Cross is the largest mixed-use development in single ownership to be developed in central London for over 150 years. The 67 acre site has a rich history and a unique setting and it is adjacent to the best connected transport hub in London. What is emerging here is a vibrant new city quarter of offices, homes, community facilities, schools, a world renowned university as well as a host of shops, restaurants, bars and cultural venues. When complete, there will be 50 new and refurbished buildings set in an exciting and inspiring network of new streets, squares, parks and public space. The estate, which is being developed by Argent, has ambitious sustainability plans, with a target to hit Net Zero by 2025.

INDUSTRY

Commercial Real Estate

Location

London

SERVICES DELIVERED

Challenge

Achieving environmental and economical sustainability

Argent LLP has ambitious Net Zero ambitions while the King’s Cross is driven primarily by achieving economic sustainability. Optimised were challenged with identifying a pathway to achieving both environmental and economic sustainability simultaneously, through the procurement of gas and electricity from green sources, accompanied by appropriate renewable electricity and gas guarantees of origin. Included within this was the challenge of understanding the GHG protocol and the UK Green Building Council’s guidelines for Net Zero reporting to ensure

that our solution achieved the quality criteria.

Solution

Fixed green gas supply

Our solution included the procurement of a 90GWh pa gas supply in OTC wholesale markets, including a bundled component of

biomethane with certificates certified through the Biomethane Certification Scheme.


This contract is backed by a rigorous Risk Management Strategy that contains devolved authority to purchase gas within strict parameters, and to consult the client at regular intervals. In addition, we secured the fixed price electricity import contracts for the energy centre’s nonparasitic electrical loads. We also procure and trade the electricity export contract to maximise revenue on the balance of electricity not used within the energy centre and the private wire network. This contract is also subject to a strict Risk Management Strategy where we strive to optimise delivered price to enhance investment return for the project.


The challenge associated with export training relates to uncertain export volumes being a consequence of energy centre uptime and heating demand variation within the end customer network. In addition to the trading and risk management services, we consulted on tariff development within the Private Wire Network, recovery of charges from end customers, implemented various metering and billing solutions, and completed the sustainability reporting in line with the developer’s ESG requirements to support Net Zero.

results

Saving cost and carbon

The weighted average price of gas secured within the energy centre sits well below current markets with a strong mark to market position– this is a consequence of both developing a Risk Management Strategy that limits exposure well in advance of delivery, and the incorporation of a fixed price Green Gas Purchase Agreement. The Green Gas Purchase Agreement will save the estate an estimated 20,000tCO2 per annum. Green gas certificates are transferred from a UK biomethane plant via Optimised using the Biomethane Certification Scheme and then surrendered on behalf of the energy centre operator providing the transparency required for end customers to declare progress against their own Net Zero goals. Despite the additional cost of the Green Gas Certificates, we supported the development of electricity tariffs via the Private Wire that avoided any increase in cost for end customers, thereby achieving our primary goal, of simultaneously delivering environmental and economic sustainability.

This is an exciting and significant step for King’s Cross and its journey to zero carbon. We are proud that we’re now able to serve our customers with green energy while keeping energy tariffs the same. We know that the UK faces a significant challenge in providing heating for homes and businesses while also being able to deliver on its commitments to decarbonise, and we hope this will encourage more investment in the green gas sector.


Optimised have been critical in this process for us – they really understood our requirements and showed great perseverance to source this first-of-a kind-deal. It’s an agreement that’s unfamiliar with many in the industry so had to show a lot of perseverance to find the right partners and take a number of stakeholders on a journey to get them familiar with the process.

Steve Kellet

Sustainability Manager, Argent

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