The CalCEF Clean Energy Fund, a small San Francisco boutique investor that is working to raise $20 million for itself, has invested in three seed-stage companies: Allopartis Biotechnologies, HID Laboratories and one unnamed outfit.

Allopartis makes enzymes used to help break down biomass into fuel, a product it will likely market to the growing biofuel industry. HID, for its part, explains its business through its name — a lighting industry acronym that stands for High Intensity Discharge. The company plans to make lights for retail spaces.

The unnamed third company is reported only as an equipment maker for the solar industry.

CalCEF also announced that it has now raised about half of its target total, or $10 million. When fully invested, the fund will have backed 20-40 companies in all.