This article explores a case study involving a 200 kWp solar panel project a 1200 kW woodchip-fired boiler, and a 6 kW heat pump system, focusing on the key risks that must be addressed for market-driven investors to successfully implement such initiatives. The main objective is to highlight the tools available to governments to support and promote the realization of renewable energy projects. Through a case study approach, the paper analyses how governments can reduce investor risks by ensuring transparency, offering targeted incentives, and establishing effective financial frameworks. Such incentives might include pre-determined feed-in tariffs (FITs), green pricing programs, feed-in premiums (FIP), capital subsidies, grants, rebates, green or white certificates or carbon credits, low-interest loans. The effects of these options are quantified in the case study for a 200 kWp solar PV system, a 1200 kW woodchip-fired boiler, and a 6 kW heat pump system. A critical aspect is the legal protection of stakeholder interests, which plays a major role in building investor confidence. Additionally, several countries have introduced insurance mechanisms to safeguard against potential financial losses from underperforming projects. In conclusion, the study emphasizes that governments play a vital role in expanding the use of renewable energy by creating the necessary supporting or incentivising legislative and regulatory framework and providing financial incentives that guarantee long-term returns for investors. Calculations indicate that, per 1 kW of installed capacity, the most beneficial approach for the state involves providing investment grants. This strategy is followed in effectiveness by subsidized interest rate loans, and subsequently by feed-in tariffs and feed-in premiums or purchase price support.