System Design, Installation and Certification
Renewable Energy Services Hampshire & South Coast
System Design
Expert Renewable Energy System Design
Renewable energy system design requires a far more tailored and technical approach than traditional heating installations. Unlike conventional gas boilers, air source and ground source heat pump systems demand detailed property assessment, precise heat loss calculations, and careful system integration to achieve maximum efficiency, performance, and long-term reliability. With extensive industry experience and specialist expertise, Solwat designs and delivers bespoke renewable heating solutions tailored precisely to your property.
Heat Pump Design
MCS-Compliant Heat Pump Design Process
As part of our MCS-compliant design process, we carry out comprehensive heat loss calculations for the entire property as well as individual rooms. This ensures your air source or ground source heat pump system is correctly sized to provide consistent comfort while minimising energy consumption.
We also assess your existing heat emitters and heating distribution system. Because heat pumps operate at lower flow temperatures than traditional boilers, some radiators or underfloor heating systems may require upgrading or resizing to deliver optimal performance and efficiency.
Hot Water
Domestic Hot Water Assessment
Domestic hot water demand is another critical factor in renewable heating design. Using current standards and regulations, we determine the appropriate cylinder capacity to meet your household or business needs. We also evaluate hot water recovery times to ensure a reliable and consistent supply without compromising system efficiency.
By combining precise calculations, regulatory compliance, and practical experience, Solwat ensures your renewable energy system is designed for maximum comfort, efficiency, and long-term savings.
Air Source Heat Pumps
This efficient and sustainable solution offers a more cost-effective way to heat your home.
Learn moreSolar PV
To save money on your electricity bills and increase your grid independence consider investing in Solar PV.
Learn moreEV Charging
Install electric charging points at your home or business, for convenience, lower costs & reduced emissions.
Learn moreBattery Storage
Installing battery storage at home enables you to store electricity, reduce energy costs and be more energy efficient.
Learn moreSolar Thermal
Solar Thermal Panels harvest energy from the sun to heat water for storage in your hot water cylinder or thermal store.
Learn moreAir Conditioning
Energy-efficient air conditioning that keeps you cool in summer and provides low-cost heating in winter.
Learn moreTailored heating systems
Solwat partners with some of the industry's most respected manufacturers, who in turn recognise our detailed design service. We integrate products and systems from a range of manufacturers e.g. We may source our air source heat pump from one manufacturer and our plant room controls from another.
We have supplied a high volume of domestic projects and a wide and varied range of commercial projects. Our customers include plumbing and heating engineers, renewable energy installers (MCS registered installers) and housebuilders – see our work on new build developments and retrofits to existing homes.
Independent Renewable Energy Consultancy
As independent renewable energy consultants, our first priority is to provide a detailed, practical appraisal of your options for renewable heat and power. We deliver honest, expert advice to help homeowners and businesses make informed decisions about transitioning to low-carbon energy solutions.
Understanding the heat loss characteristics of your building is fundamental to successful renewable energy system design. Solwat has the expertise to accurately analyse heat loss and heat gain for buildings of all sizes and types using approved Microgeneration Certification Scheme (MCS) calculation methods. This ensures every system is correctly specified for maximum efficiency, comfort, and performance.
We assess your property, energy usage, budget, and long-term goals to identify the most suitable renewable technologies — including air source heat pumps, ground source heat pumps, solar panels, and solar thermal systems. Just as importantly, we clearly advise which options are unlikely to deliver value for your specific circumstances, ensuring you invest only in solutions that will perform efficiently and reliably.
Our impartial approach means you receive tailored recommendations focused on energy efficiency, cost savings, system performance, and regulatory compliance — giving you complete confidence in your renewable energy investment.
Trusted Suppliers
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Get in touch for a free, no-obligation quote. Our team will assess your property and recommend the best solution.
Solwat Green Energy
Lea Green Farm, Christchurch Road, Lymington, Hampshire SO41 0LA
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