On Site Generation provides energy and renewables consultancy services, working throughout Scotland to support clients to save energy and make the right renewable energy decisions for their homes, businesses and communities.

Energy performance certificates

Domestic and commercial

Energy Performance Certificates provide recommendations for improvements and enable access to government support schemes such as interest free renewable energy loans and the Renewable Heat Incentive.

Renewable feasibility assessments

We have worked extensively for:
Local Energy Scotland – CARES and Community Energy Scotland funded community energy programmes.

Recent clients include:
Edinburgh Solar Coop; Greener Kirkcaldy; Glasgow Community Energy; Isle Martin Trust; Glasgow Community Energy; Sustaining Dunbar; Ullapool Community Trust; Coigach Community Hall; Parish of South Uist; sporsnis.

Heat loss assessment

Vital for biomass and heat pump sizing and gaining full MCS compliance for the installation.

Energy and environmental auditing

We provide energy efficiency auditing of buildings and can support your Energy Saving Opportunity Scheme (ESOS) assessments.  With the ever greater focus on business environmental practices, On Site Generation can provide support to implement and audit an environmental management system to IS014001 or BS8555.

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In April 2022, Energy Saving Trust launched Business Energy Scotland.  This new programme provides free energy efficiency and renewable energy support to improve your business performance, saving money and reducing your impact on the environment.  It builds on the success of the previous Energy Efficiency Business Support programme run by Zero Waste Scotland.

On Site Generation is a  framework consultant for this exciting new programme funded by the Scottish Government and operated by Energy Saving Trust.  Visit